Heat setting tool and method for split casing assembly

Abstract

The present invention discloses a heat-setting tool and method for a split receiver assembly, comprising an end face forming unit and an adjustable support unit; the end face forming unit is an annular part, and the end face of the end face forming unit is provided with an annular groove; wherein, the structural dimensions of the annular groove match the design dimensions of the end face of the split receiver assembly to be formed; the adjustable support unit comprises two diameter support mechanisms and a height adjustment rod, and the two diameter support mechanisms are symmetrically arranged at both ends of the height adjustment rod; the two diameter support mechanisms have the same structure, and both comprise a connecting block and a plurality of radial support assemblies; the connecting block is fixedly arranged at the end of the height adjustment rod, and the plurality of radial support assemblies are evenly distributed around the connecting block; wherein, the axis of the radial support assembly is arranged perpendicular to the axis of the height adjustment rod, and the axial length of the height adjustment rod and the radial support assembly can be adjusted.

Description

Technical Field

[0001] The invention belongs to the technical field of materials and vacuum heat treatment, and in particular relates to a heat setting tool and method for a split casing assembly. Background Art

[0002] At present, titanium alloy split casings are often used in aircraft engines or ship engines. The existing processing process for titanium alloy split casings is as follows: the whole ring forging of the split casing is processed as a whole; after the whole ring forging of the split casing is processed as a whole, it is divided into two half casings through wire cutting; finally, the two half casings are combined and welded together.

[0003] Due to the inevitable processing stress in the machining and welding process of parts, the diameter of the joint surface of the parts after wire cutting will shrink; at the same time, the actual diameter in the vertical direction of the joint surface is larger than the design theoretical value; therefore, it will not be able to meet the structural size requirements after the combined processing, and the correction is more difficult, which will have a great impact on the performance of the engine during use. Summary of the Invention

[0004] In response to the technical problems existing in the prior art, the present invention provides a heat setting tool and method for a split casing assembly to solve the technical problems in the existing titanium alloy split casing processing process, which cannot meet the structural size requirements after combined processing due to the inevitable processing stress, and is difficult to correct, which will greatly affect the performance of the engine during use.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] The present invention discloses a heat setting tool for a split casing assembly, comprising an end face setting unit and an adjustable support unit; the end face setting unit is an annular member, and an annular groove is provided on the end face of the end face of the end face setting unit; wherein the structural dimensions of the annular groove match the design dimensions of the end face of the split casing assembly to be set;

[0007] The adjustable support unit includes two diameter support mechanisms and a height adjustment rod, and the two diameter support mechanisms are symmetrically arranged at both ends of the height adjustment rod; the two diameter support mechanisms have the same structure, and both include a connecting block and a plurality of radial support components;

[0008] The connecting block is fixedly arranged at the end of the height adjustment rod, and the plurality of radial support assemblies are evenly distributed around the connecting block; wherein, the axis of the radial support assembly is arranged perpendicular to the axis of the height adjustment rod, and the axial length of the height adjustment rod and the radial support assembly can be adjusted.

[0009] Furthermore, the thickness of the end surface shaping unit is not less than 30 mm, and the distance between the side wall of the annular groove and the edge of the end surface shaping unit is not less than 25 mm;

[0010] The inner diameter D1 of the annular groove is: D1 = d1 - 0.25h; the outer diameter D2 of the annular groove is:

[0011] D2=d1+1.5h; wherein d1 is the inner diameter of the split receiver to be finalized, and h is the end face width of the split receiver to be finalized.

[0012] Furthermore, the radial support assembly includes a diameter adjustment rod and a support block axially connected in sequence; the diameter adjustment rod is a telescopic rod, one end of the diameter adjustment rod is fixedly connected to the side wall of the connecting block, and the support block is fixedly arranged at the other end of the diameter adjustment rod.

[0013] Furthermore, the diameter-adjusting rod and the connecting block, as well as the supporting block and the diameter-adjusting rod are connected by threads.

[0014] The present invention also provides a heat setting method for a split casing assembly, using the heat setting tool for the split casing assembly;

[0015] Wherein, the heat setting method comprises the following steps:

[0016] Step 1: Heat setting of end surface

[0017] The end surface shaping units are respectively installed on the upper and lower end surfaces of the split casing assembly to be shaped to obtain a first assembly to be shaped;

[0018] After heat setting treatment is performed on the first component to be set, a split casing component with its end surface set is obtained;

[0019] Step 2: Pre-support heat setting

[0020] Installing the adjustable support unit into the inner circle of the split receiver assembly after end surface shaping to obtain a second assembly to be shaped;

[0021] The height adjustment rod is arranged along the axial direction of the split receiver assembly after the end surface is finalized, the two diameter support mechanisms are respectively placed on both sides of the connection portion of the split receiver assembly after the end surface is finalized, and the ends of the diameter support mechanisms are tightly fitted with the inner surface of the end surface of the split receiver assembly after the end surface is finalized;

[0022] The axial length of the diameter support mechanism is adjusted to be the same as the maximum inner diameter of the end face of the split receiver assembly after the end face is finalized;

[0023] After heat setting treatment is performed on the second component to be set, a split casing component after pre-support heat setting is obtained;

[0024] Step 3: Over-support heat setting

[0025] Installing the adjustable support unit into the inner circle of the split casing assembly after the pre-support heat setting to obtain a heat setting assembly three;

[0026] The height adjustment rod is arranged along the axial direction of the split receiver assembly after the end surface is finalized, and the two diameter support mechanisms are respectively placed on both sides of the connection portion of the split receiver assembly after the pre-support heat setting, and the end surfaces of the diameter support mechanisms are tightly fitted with the inner molded surfaces of the end surfaces of the split receiver assembly after the pre-support heat setting;

[0027] The axial length L of the diameter support mechanism is adjusted to satisfy the following equation: L = d1 + N × ΔD; wherein d1 is the inner diameter of the split casing to be formed; N is a preset multiple; and ΔD is the difference between the maximum inner diameter and the minimum inner diameter of the end face of the split casing assembly after the pre-support heat setting.

[0028] After the third component to be shaped is subjected to heat setting treatment, a split casing component after support heat setting is obtained.

[0029] Furthermore, in step 1, the process of heat setting the component to be set is as follows:

[0030] placing the component to be shaped into a vacuum furnace and performing a heat setting treatment according to a first heat setting scheme; removing the end face shaping unit after the heat setting treatment to obtain a split casing component after end face shaping;

[0031] Among them, the first heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

[0032] Furthermore, in step 2, the process of heat setting the second component to be set is as follows:

[0033] placing the second component to be shaped into a vacuum furnace and performing heat setting treatment according to the second heat setting scheme; removing the adjustable support unit after the heat setting treatment to obtain a split casing component after pre-support heat setting;

[0034] Among them, the second heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

[0035] Furthermore, in step 3, the over-support heat setting process specifically includes a first over-support heat setting process, a second over-support heat setting process and a final over-support heat setting process;

[0036] Among them, during the first over-support heat setting process, the value of N is 0.5; during the second over-support heat setting process, the value of N is 1.5; during the final over-support heat setting process, the value of N is 4.

[0037] Furthermore, during the first over-support heat setting treatment and the second over-support heat setting treatment, the heat setting treatment is performed according to the third heat setting scheme;

[0038] Among them, the third heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

[0039] Furthermore, during the final over-support heat setting process, heat setting is performed according to the fourth heat setting scheme;

[0040] Among them, the fourth heat setting scheme is: raise the furnace temperature to 300°C at a temperature rise rate of 5-8°C / min, and keep warm until the part temperature reaches 300±10°C; raise the furnace temperature to 400°C at a temperature rise rate of 3-5°C / min, and keep warm until the part temperature reaches 400±10°C; then, raise the furnace temperature to 525±10°C at a temperature rise rate of 1-2°C / min, keep warm until the part temperature reaches 525±10°C, and keep warm at 525±10°C for 5-6h, then vacuum cool to below 200°C; finally, cool to below 80°C under an inert atmosphere and take out of the furnace.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] The present invention provides a heat setting tool and method for a split casing assembly, wherein an end face forming unit is installed on the end face of the split casing assembly, and the self-weight of the end face forming unit is used to apply force to the split casing assembly, thereby ensuring that the stress and end face deformation caused by welding are eliminated during the heat setting process, and new deformation can be effectively prevented during the heat setting process; an adjustable support unit is installed in the split casing assembly, and after multiple support and heat setting processes, the inner diameter size of the split casing assembly is guaranteed while the deformation caused by welding is corrected, and the structural size requirements of the split casing assembly are guaranteed. The correction process is easy and the working performance of the engine is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A longitudinal sectional view of the end surface shaping unit in Example 1;

[0044] Figure 2 Schematic diagram of the planar structure of the end face shaping unit in Example 1;

[0045] Figure 3 is a transverse cross-sectional view of the adjustable support unit in Example 1;

[0046] Figure 4 This is a longitudinal cross-sectional view of the adjustable support unit in Example 1.

[0047] Among them, 1 end face shaping unit, 2 connecting block, 3 diameter adjustment rod, 4 support block, 5 height adjustment rod; 11 annular groove. DETAILED DESCRIPTION

[0048] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail in the following specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] The present invention provides a heat setting tool for a split casing assembly, comprising an end surface shaping unit 1 and an adjustable support unit; the end surface shaping unit 1 is used for heat setting size correction of the end surface of the split casing assembly; the adjustable support unit is used for heat setting size correction of the inner surface of the split casing assembly.

[0050] The end face shaping unit 1 is an annular part, and the end face of the end face shaping unit 1 is provided with an annular groove 11; wherein, the structural dimensions of the annular groove 11 match the design dimensions of the end face of the split receiver assembly to be formed; the thickness of the end face shaping unit 1 is not less than 30 mm, and the side wall of the annular groove 11 is not less than 25 mm away from the edge of the end face shaping unit 1; the inner diameter dimension D1 of the annular groove 11 is: D1=d1-0.25h; the outer diameter dimension D2 of the annular groove 11 is: D2=d1+1.5h; wherein, d1 is the inner diameter dimension of the split receiver to be formed, and h is the end face width of the split receiver to be formed.

[0051] The adjustable support unit includes two diameter support mechanisms and a height adjustment rod 5, and the two diameter support mechanisms are symmetrically arranged at both ends of the height adjustment rod 5; the two diameter support mechanisms have the same structure, and both include a connecting block 2 and a plurality of radial support components; the connecting block 2 is fixedly arranged at the end of the height adjustment rod 5, and the plurality of radial support components are evenly distributed around the connecting block 2; wherein, the axis of the radial support component is arranged perpendicular to the axis of the height adjustment rod 5, and the axial length of the height adjustment rod 5 and the radial support component can be adjusted.

[0052] The radial support assembly includes a diameter adjustment rod 3 and a support block 4 that are axially connected in sequence; the diameter adjustment rod 3 is a telescopic rod, one end of the diameter adjustment rod 3 is fixedly connected to the side wall of the connecting block 2, and the support block 4 is fixedly arranged at the other end of the diameter adjustment rod 3; preferably, the diameter adjustment rod 3 and the connecting block 2, as well as the support block 4 and the diameter adjustment rod 3, are both threadedly connected.

[0053] The present invention also provides a heat setting method for a split casing assembly, comprising the following steps:

[0054] Step 1: Heat setting of end surface

[0055] The end face shaping unit 1 is respectively installed on the upper and lower end faces of the split casing assembly to be shaped to obtain the first assembly to be shaped.

[0056] After the component to be formed is subjected to heat setting treatment, a split casing component with end surface shaping is obtained; wherein the process of heat setting treatment of the component to be formed is as follows:

[0057] The component to be formed is placed in a vacuum furnace and heat-formed according to a first heat-forming scheme; after the heat-forming treatment, the end face forming unit 1 is removed to obtain a split casing component after end face forming; wherein, the first heat-forming scheme is: at a temperature rise rate of 5-8°C / min, the furnace temperature is raised to 300°C, and kept warm until the part temperature reaches 300±10°C; at a temperature rise rate of 3-5°C / min, the furnace temperature is raised to 400°C, and kept warm until the part temperature reaches 400±10°C; then, at a temperature rise rate of 1-2°C / min, the furnace temperature is raised to 500±10°C, and kept warm until the part temperature reaches 500±10°C, and kept warm at 500±10°C for 3-4h, and then vacuum cooled to below 200°C; finally, cooled to below 80°C under an inert atmosphere and taken out of the furnace.

[0058] Step 2: Pre-support heat setting

[0059] The adjustable support unit is installed into the inner circle of the split receiver assembly after the end face is finalized to obtain the second component to be finalized; wherein, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after the end face is finalized, and the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after the end face is finalized, and the end portions of the diameter support mechanisms are tightly fitted with the inner profile of the end face of the split receiver assembly after the end face is finalized; wherein, the axial length dimension of the diameter support mechanism is adjusted to be the same as the maximum inner diameter dimension of the end face of the split receiver assembly after the end face is finalized.

[0060] After the second component to be formed is subjected to heat setting treatment, a split casing component after pre-support heat setting is obtained; wherein the process of heat setting the second component to be formed is specifically as follows:

[0061] The second component to be set is placed in a vacuum furnace and heat-set according to the second heat-setting scheme; after the heat-setting treatment, the adjustable support unit is removed to obtain a split casing component after pre-support heat setting; wherein, the second heat-setting scheme is: at a temperature rise rate of 5-8°C / min, the furnace temperature is raised to 300°C, and kept warm until the part temperature reaches 300±10°C; at a temperature rise rate of 3-5°C / min, the furnace temperature is raised to 400°C, and kept warm until the part temperature reaches 400±10°C; then, at a temperature rise rate of 1-2°C / min, the furnace temperature is raised to 500±10°C, and kept warm until the part temperature reaches 500±10°C, and kept warm at 500±10°C for 3-4h, and then vacuum cooled to below 200°C; finally, cooled to below 80°C under an inert atmosphere and taken out of the furnace.

[0062] Step 3: Over-support heat setting

[0063] The adjustable support unit is installed into the inner circle of the split receiver assembly after pre-support heat setting to obtain heat setting assembly three; wherein, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after end face setting, and the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after pre-support heat setting, and the end face of the diameter support mechanism is tightly fitted with the inner mold surface of the end face of the split receiver assembly after pre-support heat setting; wherein, the axial length dimension L of the diameter support mechanism is adjusted to meet: L=d1+N×ΔD; wherein d1 is the inner diameter dimension of the split receiver to be set; N is a preset multiple value; ΔD is the difference between the maximum inner diameter and the minimum inner diameter of the end face of the split receiver assembly after pre-support heat setting.

[0064] After the third component to be shaped is subjected to heat setting treatment, a split casing component after support heat setting is obtained.

[0065] In the present invention, the over-support heat setting treatment process specifically includes a primary over-support heat setting treatment process, a secondary over-support heat setting treatment process and a final over-support heat setting treatment process; wherein, in the primary over-support heat setting treatment process, the value of N is 0.5; in the secondary over-support heat setting treatment process, the value of N is 1.5; in the final over-support heat setting treatment process, the value of N is 4.

[0066] During the single over-support heat setting treatment and the secondary over-support heat setting treatment, the heat setting treatment is carried out in accordance with the third heat setting scheme; among them, the third heat setting scheme is: at a temperature rise rate of 5-8℃ / min, the furnace temperature is raised to 300℃, and kept warm until the part temperature reaches 300±10℃; at a temperature rise rate of 3-5℃ / min, the furnace temperature is raised to 400℃, and kept warm until the part temperature reaches 400±10℃; then, at a temperature rise rate of 1-2℃ / min, the furnace temperature is raised to 500±10℃, and kept warm until the part temperature reaches 500±10℃, and kept warm at 500±10℃ for 3-4h, and then vacuum cooled to below 200℃; finally, cooled to below 80℃ under an inert atmosphere and taken out of the furnace.

[0067] During the final over-support heat setting treatment process, heat setting treatment is carried out according to the fourth heat setting scheme; wherein, the fourth heat setting scheme is: at a temperature rise rate of 5-8°C / min, the furnace temperature is raised to 300°C, and kept warm until the part temperature reaches 300±10°C; at a temperature rise rate of 3-5°C / min, the furnace temperature is raised to 400°C, and kept warm until the part temperature reaches 400±10°C; then, at a temperature rise rate of 1-2°C / min, the furnace temperature is raised to 525±10°C, and kept warm until the part temperature reaches 525±10°C, and kept warm at 525±10°C for 5-6 hours, and then vacuum cooled to below 200°C; finally, cooled to below 80°C under an inert atmosphere and taken out of the furnace.

[0068] Working principle:

[0069] The heat setting tooling and method for the split-casing assembly of the present invention performs heat setting by using an end face shaping unit and an adjustable support unit, because the strength of the alloy decreases and softens after being heated. Specifically, the end face shaping unit is installed on the end face of the split-casing assembly, and the end face shaping unit's own gravity is used to apply force to the split-casing assembly. The adjustable support unit is installed in the split-casing assembly and undergoes multiple support and heat setting processes. The main features are: first, by adding appropriate gravity to the end face, the end face can be ensured to be flat, thereby achieving the effect of heat setting the end face; Second, using adjustable support units for heat setting in batches can prevent weld cracking caused by excessive support at one time or rebound after heat setting due to insufficient support size, which makes it impossible to achieve the heat setting effect. This effectively solves the end face size and inner diameter size problems in the welding process of split receiver components, and can also be extended to the heat setting of ring parts caused by machining. In addition, the length of the diameter adjustment rod in the adjustable support unit can be adjusted to achieve the adjustment of the support tooling size, ensuring the use of over-support correction of the adjustable support unit. The operation process is simple and the correction result is highly accurate.

[0070] Example 1

[0071] As attached Figure 1-4 As shown, this embodiment 1 provides a heat setting tooling for a split casing assembly, including an end face forming unit 1 and an adjustable support unit; the end face forming unit 1 is used for heat setting size correction of the end face of the split casing assembly; the adjustable support unit is used for heat setting size correction of the inner surface of the split casing assembly.

[0072] In this embodiment 1, in order to ensure the flatness of both end faces of the part, the end face shaping unit 1 is an annular part, and the end face of the end face shaping unit 1 is provided with an annular groove 11; wherein, the structural dimensions of the annular groove 11 match the design dimensions of the end face of the split receiver assembly to be shaped.

[0073] To ensure the strength and shaping effect of the end face shaping unit 1, the thickness of the end face shaping unit 1 is not less than 30 mm, and the side wall of the annular groove 11 is not less than 25 mm from the edge of the end face shaping unit 1; that is, D0≤(D1-50) mm, D01≥(D2+50) mm.

[0074] The inner diameter dimension D1 of the annular groove 11 is: D1=d1-0.25h; the outer diameter dimension D2 of the annular groove 11 is: D2=d1+1.5h; wherein d1 is the inner diameter dimension of the split receiver to be finalized, and h is the end face width of the split receiver to be finalized.

[0075] In order to avoid warping deformation during the heat setting process of the split receiver assembly to be formed and to avoid compression deformation of the receiver wall, the weight of the end face forming unit 1 located on the upper end face of the split receiver to be formed is designed to be 40-70 kg.

[0076] In this embodiment 1, the adjustable support unit includes two diameter support mechanisms and a height adjustment rod 5, and the two diameter support mechanisms are symmetrically arranged at both ends of the height adjustment rod 5; the two diameter support mechanisms have the same structure, and both include a connecting block 2 and four radial support components; the connecting block 2 is fixedly arranged at the end of the height adjustment rod 5, and the four radial support components are evenly distributed around the connecting block 2; wherein, the axis of the radial support component is arranged perpendicular to the axis of the height adjustment rod 5, and the axial length of the height adjustment rod 5 and the radial support component can be adjusted.

[0077] Each of the radial support assemblies includes a diameter adjustment rod 3 and a support block 4 that are axially connected in sequence; the diameter adjustment rod 3 is a telescopic rod, one end of the diameter adjustment rod 3 is fixedly connected to the side wall of the connecting block 2, and the support block 4 is fixedly arranged at the other end of the diameter adjustment rod 3; preferably, threaded connections are adopted between the diameter adjustment rod 3 and the connecting block 2, and between the support block 4 and the diameter adjustment rod 3; wherein, the diameter adjustment rod 3 adopts a telescopic rod, and the axial length of the radial support assembly can be changed by adjusting the axial length of the diameter adjustment rod 3 to meet the shaping requirements; it should be noted that the outer end face shape of the support block 4 is matched with the inner surface shape of the split receiver to be shaped, so as to ensure that the outer end face of the support block 4 is tightly fitted with the inner surface of the split receiver to be shaped.

[0078] When in use, one of the diameter support mechanisms is fixed at the lower end face of the split receiver to be formed, and the height adjustment rod 5 is set along the axial direction of the split receiver to be formed; thereafter, the height adjustment rod 5 is adjusted to make the other diameter support mechanism be at the upper end face of the split receiver to be formed; wherein, the outer end face of the support block 4 is in close contact with the inner wall of the end face, and the spacing between the support block 4 and the end face forming unit 1 is 3-5mm; that is, the support block 4 is in contact with the inner diameter of the upper and lower end faces of the receiver, and the distance between the support blocks 4 at both ends of the height adjustment rod 5 and the end face forming unit 1 located at the upper or lower end is 3-5mm.

[0079] Example 2

[0080] Taking the heat setting process of a certain type of TC25 titanium alloy split receiver assembly as an example, the inner diameter of this type of TC25 titanium alloy split receiver is 731mm and the end face width is 28mm.

[0081] This embodiment 2 provides a heat setting method for a split casing assembly, using the heat setting fixture for the split casing assembly described in embodiment 1. Specifically, in the heat setting fixture for the split casing assembly, the design dimensions of the end face shaping unit 1 are as follows:

[0082] The thickness of the end face shaping unit 1 is 45 mm, and the side wall of the annular groove 11 is 30 mm away from the edge of the end face shaping unit 1; that is, D0=724-60=664 mm, D01=773+60=833 mm; the inner diameter dimension D1 of the annular groove 11 is: D1=731-0.25×28=724 mm; the outer diameter dimension D2 of the annular groove 11 is: D2=731+1.5×28=773 mm; the weight of the end face shaping unit 1 located on the upper end face of the split receiver to be shaped is designed to be 55 kg.

[0083] The heat setting method of a split casing assembly described in Example 2 specifically includes the following steps:

[0084] Step 1: Heat setting of end surface

[0085] Step 11: To ensure the flatness of the upper and lower end surfaces of the split receiver assembly to be shaped, the end surface shaping unit 1 is respectively installed on the upper and lower end surfaces of the split receiver assembly to be shaped to obtain a first assembly to be shaped.

[0086] Step 12: placing the component to be shaped into a vacuum furnace and performing heat setting treatment according to the first heat setting scheme; after the heat setting treatment, removing the end face shaping unit 1 to obtain the split casing component after end face shaping.

[0087] Among them, the first heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

[0088] Step 2: Pre-support heat setting

[0089] Step 21: Measure the long side dimension of the ovality of the split receiver assembly after the end surface is finalized, and the measurement result is 733 mm.

[0090] Step 22: Install the adjustable support unit into the inner circle of the split receiver assembly after the end surface is finalized to obtain the second assembly to be finalized.

[0091] Wherein, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after the end face is finalized, the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after the end face is finalized, and the end portion of the diameter support mechanism is tightly fitted with the inner profile of the end face of the split receiver assembly after the end face is finalized; wherein, the axial length dimension of the diameter support mechanism is adjusted to be the same as the maximum inner diameter dimension of the end face of the split receiver assembly after the end face is finalized.

[0092] Step 23: placing the second component to be shaped into a vacuum furnace and performing heat setting treatment according to the second heat setting scheme; after the heat setting treatment, removing the adjustable support unit to obtain the split casing component after pre-support heat setting.

[0093] Among them, the second heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

[0094] Step 3: One-time support heat setting

[0095] Step 31. Measure the ovality of the split receiver assembly after pre-support forming. The major axis of the end face of the split receiver assembly after pre-support forming is 733 mm, and the short side length of the end face of the split receiver assembly after pre-support forming is 727 mm. That is, the difference between the maximum inner diameter and the minimum inner diameter of the end face of the split receiver assembly after pre-support heat forming is 733 mm - 727 mm = 6 mm.

[0096] Step 32: Install the adjustable support unit into the inner circle of the split casing assembly after the pre-support heat setting to obtain heat setting assembly three.

[0097] Wherein, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after the end face is finalized, and the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after the pre-support heat setting, and the end face of the diameter support mechanism is tightly fitted with the inner surface of the end face of the split receiver assembly after the pre-support heat setting; wherein, the axial length dimension L of the diameter support mechanism is adjusted to meet the following requirements: L=731+0.5×6mm=734mm.

[0098] Step 33: Place the third component to be shaped into a vacuum furnace and perform heat setting treatment according to the third heat setting scheme; after the heat setting treatment, remove the adjustable support unit to obtain a split casing component after one-time support and heat setting.

[0099] Among them, the third heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3h-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under an inert atmosphere and take out of the furnace.

[0100] Step 4: Secondary over-support heat setting

[0101] Step 41. Measure the ovality of the split receiver assembly after the one-time support and shaping. The major axis of the end face of the split receiver assembly after the one-time support and shaping is 733 mm, and the short side length of the end face of the split receiver assembly after the one-time support and shaping is 728 mm. That is, the difference between the maximum inner diameter and the minimum inner diameter of the end face of the split receiver assembly after the one-time support and heat shaping is 733 mm - 728 mm = 5 mm.

[0102] Step 42: Install the adjustable support unit into the inner circle of the split casing assembly after the one-time support heat setting to obtain heat setting assembly four.

[0103] Among them, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after the end face is finalized, and the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after the one-time support and heat setting, and the end face of the diameter support mechanism is tightly fitted with the inner surface of the end face of the split receiver assembly after the one-time support and heat setting; wherein, the axial length dimension L of the diameter support mechanism is adjusted to meet: L = 731 + 1.5 × 5mm = 738.5mm.

[0104] Step 43: Place the fourth component to be shaped into a vacuum furnace and perform heat setting treatment according to the third heat setting scheme described above; after the heat setting treatment, remove the adjustable support unit to obtain a split casing component after secondary support heat setting.

[0105] Step 5: Final over-support heat setting

[0106] Step 51. Measure the ovality of the split receiver assembly after the secondary over-support forming. The major axis of the end face of the split receiver assembly after the secondary over-support forming is 732 mm, and the short side length of the end face of the split receiver assembly after the secondary over-support forming is 729 mm. That is, the difference between the maximum inner diameter and the minimum inner diameter of the end face of the split receiver assembly after the secondary over-support heat setting is 732 mm - 729 mm = 3 mm.

[0107] Step 52: Install the adjustable support unit into the inner circle of the split casing assembly after the secondary over-support heat setting to obtain heat-set assembly five.

[0108] Wherein, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after the end face is finalized, and the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after the secondary over-support heat setting, and the end face of the diameter support mechanism is tightly fitted with the inner surface of the end face of the split receiver assembly after the secondary over-support heat setting; wherein, the axial length dimension L of the diameter support mechanism is adjusted to meet the following requirements: L=731+4×3mm=743mm.

[0109] Step 53: placing the to-be-shaped component five into a vacuum furnace and performing heat setting treatment according to the fourth heat setting scheme; after the heat setting treatment, removing the adjustable support unit to obtain the final split casing component after the support heat setting;

[0110] Among them, the fourth heat setting scheme is: raise the furnace temperature to 300°C at a temperature rise rate of 5-8°C / min, and keep warm until the part temperature reaches 300±10°C; raise the furnace temperature to 400°C at a temperature rise rate of 3-5°C / min, and keep warm until the part temperature reaches 400±10°C; then, raise the furnace temperature to 500±10°C at a temperature rise rate of 1-2°C / min, keep warm until the part temperature reaches 525±10°C, and keep warm at 525±10°C for 5-6h, and then vacuum cool to below 200°C; finally, turn on the argon fan and air-cool to below 80°C before taking out of the furnace.

[0111] Example 3

[0112] Taking the heat setting process of a certain type of TC25 titanium alloy split receiver assembly as an example, the inner diameter of this type of TC25 titanium alloy split receiver is 598mm and the end face width is 26mm.

[0113] This embodiment 3 provides a heat setting method for a split casing assembly, using the heat setting tooling for the split casing assembly as described in embodiment 1. Specifically, in the heat setting tooling for the split casing assembly, the design dimensions of the end surface shaping unit 1 are as follows:

[0114] The thickness of the end face shaping unit 1 is 40 mm, and the side wall of the annular groove 11 is 30 mm away from the edge of the end face shaping unit 1; that is, D0=591.5-60=531.5 mm, D01=637+60=697 mm; the inner diameter dimension D1 of the annular groove 11 is: D1=598-0.25×26=591.5 mm; the outer diameter dimension D2 of the annular groove 11 is: D2=598+1.5×26=637 mm; the weight of the end face shaping unit 1 located on the upper end face of the split receiver to be shaped is designed to be 50 kg.

[0115] The heat setting method of a split casing assembly described in Example 3 specifically includes the following steps:

[0116] Step 1: Heat setting of end surface

[0117] Step 11: To ensure the flatness of the upper and lower end surfaces of the split receiver assembly to be shaped, the end surface shaping unit 1 is respectively installed on the upper and lower end surfaces of the split receiver assembly to be shaped to obtain a first assembly to be shaped.

[0118] Step 12: placing the component to be shaped into a vacuum furnace and performing heat setting treatment according to the first heat setting scheme; after the heat setting treatment, removing the end face shaping unit 1 to obtain the split casing component after end face shaping.

[0119] Among them, the first heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

[0120] Step 2: Pre-support heat setting

[0121] Step 21: Measure the long side dimension of the ovality of the split receiver assembly after the end surface is finalized, and the measurement result is 603 mm.

[0122] Step 22: Install the adjustable support unit into the inner circle of the split receiver assembly after the end surface is finalized to obtain the second assembly to be finalized.

[0123] Wherein, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after the end face is finalized, the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after the end face is finalized, and the end portion of the diameter support mechanism is tightly fitted with the inner profile of the end face of the split receiver assembly after the end face is finalized; wherein, the axial length dimension of the diameter support mechanism is adjusted to be the same as the maximum inner diameter dimension of the end face of the split receiver assembly after the end face is finalized.

[0124] Step 23: placing the second component to be shaped into a vacuum furnace and performing heat setting treatment according to the second heat setting scheme; after the heat setting treatment, removing the adjustable support unit to obtain the split casing component after pre-support heat setting.

[0125] Among them, the second heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

[0126] Step 3: One-time support heat setting

[0127] Step 31. Measure the ovality of the split receiver assembly after pre-support forming. The major axis of the end face of the split receiver assembly after pre-support forming is 603 mm, and the short side length of the end face of the split receiver assembly after pre-support forming is 596 mm. That is, the difference between the maximum inner diameter and the minimum inner diameter of the end face of the split receiver assembly after pre-support heat forming is 603 mm - 596 mm = 7 mm.

[0128] Step 32: Install the adjustable support unit into the inner circle of the split casing assembly after the pre-support heat setting to obtain heat setting assembly three.

[0129] Among them, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after the end face is finalized, and the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after the pre-support heat setting, and the end face of the diameter support mechanism is tightly fitted with the inner surface of the end face of the split receiver assembly after the pre-support heat setting; wherein, the axial length dimension L of the diameter support mechanism is adjusted to meet: L = 598 + 0.5 × 7mm = 601.5mm.

[0130] Step 33: Place the third component to be shaped into a vacuum furnace and perform heat setting treatment according to the third heat setting scheme; after the heat setting treatment, remove the adjustable support unit to obtain a split casing component after one-time support and heat setting.

[0131] Among them, the third heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

[0132] Step 4: Secondary over-support heat setting

[0133] Step 41. Measure the ovality of the split receiver assembly after the one-time support and shaping. The major axis of the end face of the split receiver assembly after the one-time support and shaping is 603 mm, and the short side length of the end face of the split receiver assembly after the one-time support and shaping is 597.5 mm. That is, the difference between the maximum inner diameter and the minimum inner diameter of the end face of the split receiver assembly after the one-time support and heat shaping is 603 mm - 597.5 mm = 5.5 mm.

[0134] Step 42: Install the adjustable support unit into the inner circle of the split casing assembly after the one-time support heat setting to obtain heat setting assembly four.

[0135] Among them, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after the end face is finalized, and the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after the one-time support and heat setting, and the end face of the diameter support mechanism is tightly fitted with the inner surface of the end face of the split receiver assembly after the one-time support and heat setting; wherein, the axial length dimension L of the diameter support mechanism is adjusted to meet: L = 598 + 1.5 × 5.5 mm = 606.25 mm.

[0136] Step 43: Place the fourth component to be shaped into a vacuum furnace and perform heat setting treatment according to the third heat setting scheme described above; after the heat setting treatment, remove the adjustable support unit to obtain a split casing component after secondary support heat setting.

[0137] Step 5: Final over-support heat setting

[0138] Step 51. Measure the ovality of the split receiver assembly after the secondary over-support forming. The major axis of the end face of the split receiver assembly after the secondary over-support forming is 600 mm, and the short side length of the end face of the split receiver assembly after the secondary over-support forming is 597.5 mm. That is, the difference between the maximum inner diameter and the minimum inner diameter of the end face of the split receiver assembly after the secondary over-support heat setting is 600 mm - 597.5 mm = 2.5 mm.

[0139] Step 52: Install the adjustable support unit into the inner circle of the split casing assembly after the secondary over-support heat setting to obtain heat-set assembly five.

[0140] Among them, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after the end face is finalized, and the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after the secondary over-support heat setting, and the end face of the diameter support mechanism is tightly fitted with the inner surface of the end face of the split receiver assembly after the secondary over-support heat setting; wherein, the axial length dimension L of the diameter support mechanism is adjusted to meet: L = 598 + 4 × 2.5 mm = 608 mm.

[0141] Step 53: placing the to-be-shaped component five into a vacuum furnace and performing heat setting treatment according to the fourth heat setting scheme; after the heat setting treatment, removing the adjustable support unit to obtain the final split casing component after the support heat setting;

[0142] Among them, the fourth heat setting scheme is: raise the furnace temperature to 300°C at a temperature rise rate of 5-8°C / min, and keep warm until the part temperature reaches 300±10°C; raise the furnace temperature to 400°C at a temperature rise rate of 3-5°C / min, and keep warm until the part temperature reaches 400±10°C; then, raise the furnace temperature to 525±10°C at a temperature rise rate of 1-2°C / min, keep warm until the part temperature reaches 525±10°C, and keep warm at 525±10°C for 5-6h, then vacuum cool to below 200°C; finally, cool to below 80°C under an inert atmosphere and take out of the furnace.

[0143] Example 4

[0144] Taking the heat setting process of a certain type of TC25 titanium alloy split receiver assembly as an example, the inner diameter of this type of TC25 titanium alloy split receiver is 809mm and the end face width is 32mm.

[0145] This embodiment 4 provides a heat setting method for a split casing assembly, using the heat setting fixture for the split casing assembly described in embodiment 1. Specifically, in the heat setting fixture for the split casing assembly, the design dimensions of the end face shaping unit 1 are as follows:

[0146] The thickness of the end face shaping unit 1 is 48 mm, and the side wall of the annular groove 11 is 30 mm away from the edge of the end face shaping unit 1; that is, D0=801-60=741 mm, D01=857+60=917 mm; the inner diameter dimension D1 of the annular groove 11 is: D1=809-0.25×32=801 mm; the outer diameter dimension D2 of the annular groove 11 is: D2=809+1.5×32=857 mm; the weight of the end face shaping unit 1 located on the upper end face of the split receiver to be shaped is designed to be 70 kg.

[0147] The heat setting method of a split casing assembly described in Example 4 specifically includes the following steps:

[0148] Step 1: Heat setting of end surface

[0149] Step 11: To ensure the flatness of the upper and lower end surfaces of the split receiver assembly to be shaped, the end surface shaping unit 1 is respectively installed on the upper and lower end surfaces of the split receiver assembly to be shaped to obtain a first assembly to be shaped.

[0150] Step 12: placing the component to be shaped into a vacuum furnace and performing heat setting treatment according to the first heat setting scheme; after the heat setting treatment, removing the end face shaping unit 1 to obtain the split casing component after end face shaping.

[0151] Among them, the first heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

[0152] Step 2: Pre-support heat setting

[0153] Step 21: Measure the long side dimension of the ovality of the split receiver assembly after the end surface is finalized, and the measurement result is 812 mm.

[0154] Step 22: Install the adjustable support unit into the inner circle of the split receiver assembly after the end surface is finalized to obtain the second assembly to be finalized.

[0155] Wherein, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after the end face is finalized, the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after the end face is finalized, and the end portion of the diameter support mechanism is tightly fitted with the inner profile of the end face of the split receiver assembly after the end face is finalized; wherein, the axial length dimension of the diameter support mechanism is adjusted to be the same as the maximum inner diameter dimension of the end face of the split receiver assembly after the end face is finalized.

[0156] Step 23: placing the second component to be shaped into a vacuum furnace and performing heat setting treatment according to the second heat setting scheme; after the heat setting treatment, removing the adjustable support unit to obtain the split casing component after pre-support heat setting.

[0157] Among them, the second heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

[0158] Step 3: One-time support heat setting

[0159] Step 31. Measure the ovality of the split receiver assembly after pre-support forming. The major axis of the end face of the split receiver assembly after pre-support forming is 812 mm, and the short side length of the end face of the split receiver assembly after pre-support forming is 804 mm. That is, the difference between the maximum inner diameter and the minimum inner diameter of the end face of the split receiver assembly after pre-support heat forming is 812 mm - 804 mm = 8 mm.

[0160] Step 32: Install the adjustable support unit into the inner circle of the split casing assembly after the pre-support heat setting to obtain heat setting assembly three.

[0161] Among them, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after the end face is finalized, and the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after the pre-support heat setting, and the end face of the diameter support mechanism is tightly fitted with the inner surface of the end face of the split receiver assembly after the pre-support heat setting; wherein, the axial length dimension L of the diameter support mechanism is adjusted to meet: L = 809 + 0.5 × 8mm = 813mm.

[0162] Step 33: Place the third component to be shaped into a vacuum furnace and perform heat setting treatment according to the third heat setting scheme; after the heat setting treatment, remove the adjustable support unit to obtain a split casing component after one-time support and heat setting.

[0163] Among them, the third heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

[0164] Step 4: Secondary over-support heat setting

[0165] Step 41. Measure the ovality of the split receiver assembly after the one-time support forming. The major axis of the end face of the split receiver assembly after the one-time support forming is 811 mm, and the short side length of the end face of the split receiver assembly after the one-time support forming is 806 mm. That is, the difference between the maximum inner diameter and the minimum inner diameter of the end face of the split receiver assembly after the one-time support heat forming is 811 mm - 806 mm = 5 mm.

[0166] Step 42: Install the adjustable support unit into the inner circle of the split casing assembly after the one-time support heat setting to obtain heat setting assembly four.

[0167] Among them, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after the end face is finalized, and the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after the one-time support and heat setting, and the end face of the diameter support mechanism is tightly fitted with the inner surface of the end face of the split receiver assembly after the one-time support and heat setting; wherein, the axial length dimension L of the diameter support mechanism is adjusted to meet: L = 809 + 1.5 × 5mm = 816.5mm.

[0168] Step 43: Place the fourth component to be shaped into a vacuum furnace and perform heat setting treatment according to the third heat setting scheme described above; after the heat setting treatment, remove the adjustable support unit to obtain a split casing component after secondary support heat setting.

[0169] Step 5: Final over-support heat setting

[0170] Step 51. Measure the ovality of the split receiver assembly after the secondary over-support forming. The major axis of the end face of the split receiver assembly after the secondary over-support forming is 810 mm, and the short side length of the end face of the split receiver assembly after the secondary over-support forming is 807.5 mm. That is, the difference between the maximum inner diameter and the minimum inner diameter of the end face of the split receiver assembly after the secondary over-support heat setting is 810 mm - 807.5 mm = 2.5 mm.

[0171] Step 52: Install the adjustable support unit into the inner circle of the split casing assembly after the secondary over-support heat setting to obtain heat-set assembly five.

[0172] Among them, the height adjustment rod 5 is arranged along the axial direction of the split receiver assembly after the end face is finalized, and the two diameter support mechanisms are respectively placed on both sides of the connection part of the split receiver assembly after the secondary over-support heat setting, and the end face of the diameter support mechanism is tightly fitted with the inner surface of the end face of the split receiver assembly after the secondary over-support heat setting; wherein, the axial length dimension L of the diameter support mechanism is adjusted to meet: L = 809 + 4 × 2.5 mm = 819 mm.

[0173] Step 53: placing the to-be-shaped component five into a vacuum furnace and performing heat setting treatment according to the fourth heat setting scheme; after the heat setting treatment, removing the adjustable support unit to obtain the final split casing component after the support heat setting;

[0174] Among them, the fourth heat setting scheme is: raise the furnace temperature to 300°C at a temperature rise rate of 5-8°C / min, and keep warm until the part temperature reaches 300±10°C; raise the furnace temperature to 400°C at a temperature rise rate of 3-5°C / min, and keep warm until the part temperature reaches 400±10°C; then, raise the furnace temperature to 525±10°C at a temperature rise rate of 1-2°C / min, keep warm until the part temperature reaches 525±10°C, and keep warm at 525±10°C for 5-6h, then vacuum cool to below 200°C; finally, cool to below 80°C under an inert atmosphere and take out of the furnace.

[0175] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes changes, replacements and other implementation methods that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention.

Claims

1. A heat setting method for a split casing assembly, characterized in that: A heat setting fixture for a split casing assembly is used; the heat setting fixture for the split casing assembly comprises an end face setting unit (1) and an adjustable support unit; the end face setting unit (1) is an annular member, and an annular groove (11) is provided on the end face of the end face setting unit (1); wherein the structural dimensions of the annular groove (11) match the design dimensions of the end face of the split casing assembly to be set; The adjustable support unit comprises two diameter support mechanisms and a height adjustment rod (5), wherein the two diameter support mechanisms are symmetrically arranged at both ends of the height adjustment rod (5); the two diameter support mechanisms have the same structure, and both comprise a connecting block (2) and a plurality of radial support components; The connecting block (2) is fixedly arranged at the end of the height adjustment rod (5), and a plurality of the radial support assemblies are evenly distributed around the connecting block (2); wherein the axis of the radial support assembly is perpendicular to the axis of the height adjustment rod (5), and the axial lengths of the height adjustment rod (5) and the radial support assembly are adjustable; A heat setting method for a split casing assembly comprises the following steps: Step 1: Heat setting of end surface The end face shaping units (1) are respectively installed on the upper and lower end faces of the split casing assembly to be shaped, to obtain a first assembly to be shaped; After heat setting treatment is performed on the first component to be set, a split casing component with its end surface set is obtained; Step 2: Pre-support heat setting Installing the adjustable support unit into the inner circle of the split receiver assembly after end surface shaping to obtain a second assembly to be shaped; The height adjustment rod (5) is arranged along the axial direction of the split receiver assembly after the end surface is finalized, the two diameter support mechanisms are respectively placed on both sides of the connection portion of the split receiver assembly after the end surface is finalized, and the ends of the diameter support mechanisms are tightly fitted with the inner profile of the end surface of the split receiver assembly after the end surface is finalized; The axial length of the diameter support mechanism is adjusted to be the same as the maximum inner diameter of the end face of the split receiver assembly after the end face is finalized; After heat setting treatment is performed on the second component to be set, a split casing component after pre-support heat setting is obtained; Step 3: Over-support heat setting Installing the adjustable support unit into the inner circle of the split casing assembly after the pre-support heat setting to obtain a heat setting assembly three; The height adjustment rod (5) is arranged along the axial direction of the split receiver assembly after the end surface is finalized, the two diameter support mechanisms are respectively placed on both sides of the connection portion of the split receiver assembly after the pre-support heat setting, and the end surface of the diameter support mechanism is tightly fitted with the inner surface of the end surface of the split receiver assembly after the pre-support heat setting; Wherein, the axial length dimension of the diameter support mechanism is adjusted L satisfy: L =d1+N×ΔD; wherein d1 is the inner diameter of the split casing to be formed; N is a preset multiple; ΔD is the difference between the maximum inner diameter and the minimum inner diameter of the end face of the split casing assembly after the pre-support heat setting; After the third component to be shaped is subjected to heat setting treatment, a split casing component after support heat setting is obtained.

2. The heat setting method of a split casing assembly according to claim 1, characterized in that: The thickness of the end face shaping unit (1) is not less than 30 mm, and the distance between the side wall of the annular groove (11) and the edge of the end face shaping unit (1) is not less than 25 mm; The inner diameter dimension D1 of the annular groove (11) is: D1=d1-0.25h; the outer diameter dimension D2 of the annular groove (11) is: D2=d1+1.5h; wherein d1 is the inner diameter dimension of the split receiver to be finalized, and h is the end face width of the split receiver to be finalized.

3. The heat setting method of a split casing assembly according to claim 1, characterized in that: The radial support assembly comprises a diameter adjustment rod (3) and a support block (4) which are connected in sequence in an axial direction; the diameter adjustment rod (3) is a telescopic rod, one end of the diameter adjustment rod (3) is fixedly connected to the side wall of the connection block (2), and the support block (4) is fixedly arranged on the other end of the diameter adjustment rod (3).

4. The heat setting method of a split casing assembly according to claim 3, characterized in that: The diameter adjustment rod (3) and the connecting block (2), as well as the support block (4) and the diameter adjustment rod (3), are both connected by threads.

5. The heat setting method of a split casing assembly according to claim 1, characterized in that: In step 1, the process of heat setting the component to be set is as follows: The component to be shaped is placed in a vacuum furnace and subjected to heat setting treatment according to a first heat setting scheme; after the heat setting treatment, the end face shaping unit (1) is removed to obtain a split casing component after end face shaping; Among them, the first heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

6. The heat setting method of a split casing assembly according to claim 1, characterized in that: In step 2, the process of heat setting the second component to be set is as follows: placing the second component to be shaped into a vacuum furnace and performing heat setting treatment according to the second heat setting scheme; removing the adjustable support unit after the heat setting treatment to obtain a split casing component after pre-support heat setting; Among them, the second heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

7. The heat setting method of a split casing assembly according to claim 1, characterized in that: In step 3, the over-support heat setting process specifically includes a first over-support heat setting process, a second over-support heat setting process and a final over-support heat setting process; Among them, during the first over-support heat setting process, the value of N is 0.5; during the second over-support heat setting process, the value of N is 1.5; during the final over-support heat setting process, the value of N is 4.

8. The heat setting method of a split casing assembly according to claim 7, characterized in that: During the first over-support heat setting treatment and the second over-support heat setting treatment, the heat setting treatment is performed according to the third heat setting scheme; Among them, the third heat setting scheme is: raise the furnace temperature to 300℃ at a temperature rise rate of 5-8℃ / min, and keep warm until the part temperature reaches 300±10℃; raise the furnace temperature to 400℃ at a temperature rise rate of 3-5℃ / min, and keep warm until the part temperature reaches 400±10℃; then, raise the furnace temperature to 500±10℃ at a temperature rise rate of 1-2℃ / min, keep warm until the part temperature reaches 500±10℃, and keep warm at 500±10℃ for 3-4h, then vacuum cool to below 200℃; finally, cool to below 80℃ under inert atmosphere and take out of the furnace.

9. The heat setting method of a split casing assembly according to claim 7, characterized in that: During the final over-support heat setting process, heat setting is performed according to the fourth heat setting scheme; Among them, the fourth heat setting scheme is: raise the furnace temperature to 300°C at a temperature rise rate of 5-8°C / min, and keep warm until the part temperature reaches 300±10°C; raise the furnace temperature to 400°C at a temperature rise rate of 3-5°C / min, and keep warm until the part temperature reaches 400±10°C; then, raise the furnace temperature to 525±10°C at a temperature rise rate of 1-2°C / min, keep warm until the part temperature reaches 525±10°C, and keep warm at 525±10°C for 5-6h, then vacuum cool to below 200°C; finally, cool to below 80°C under an inert atmosphere and take out of the furnace.

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