Forming method of high-temperature alloy special-shaped forge piece

Abstract

The invention relates to a forging forming method, in particular to a high-temperature alloy special-shaped forge piece forming method which comprises the steps that S11, based on a second hole pattern blank, the second hole pattern blank is shaped, and a third hole pattern blank is obtained; s12, based on the third hole pattern blank, the third hole pattern blank is punched, and a fourth hole pattern blank is obtained; s13, based on a fourth hole pattern blank, the end, with the minimum caliber, of the fourth hole pattern blank is extruded in the axial direction of the fourth hole pattern blank, the minimum end of the fourth hole pattern blank is bent by a preset angle, and a fifth hole pattern blank is obtained; and S14, based on the fifth hole pattern blank, a rolling assembly is adopted for rolling the fifth hole pattern blank, and the needed forge piece is obtained. In this way, the problems that in the prior art, when a rectangular ring is used for producing a cartridge receiver, local deformation of a forge piece is likely to be intense, and the structure performance in the forge piece is uneven are solved.

Description

Technical Field

[0001] The invention relates to a forging method, in particular to a forming method for a high-temperature alloy special-shaped forging. Background Art

[0002] The aircraft engine casing is the main load-bearing component of the aircraft engine and is called the "skeleton" of the aircraft engine. The casing provides a safe and enclosed space for the core components of the engine, such as the fan, shaft, blades, combustion chamber and turbine. The shapes of the casings of different engines and different parts of the engine are different, but the basic feature is that it is a component composed of a cylindrical or conical shell and a support plate. Its cross-section is a large-size thin-walled part with a large variation, and its material is a difficult-to-deform material. The conventional casing forming method is to use rectangular rings for production. The use of traditional rectangular rings requires a large amount of excess machining weight, which not only prolongs the machining production cycle of the forgings, but may also cause severe local deformation of the forgings, causing problems with uneven organizational properties inside the forgings, and thus leading to unstable product use. Summary of the invention

[0003] In order to solve the problem that the use of rectangular rings in the prior art to produce casings may cause severe local deformation of forgings and uneven organizational properties inside the forgings, the present invention provides a forming method for high-temperature alloy special-shaped forgings, comprising the following steps:

[0004] Step S11: Based on the second hole profile blank, shaping the second hole profile blank to obtain a third hole profile blank;

[0005] Step S12: based on the third hole profile blank, punching the third hole profile blank to obtain a fourth hole profile blank;

[0006] Step S13: Based on the fourth hole-shaped blank, extruding the smallest end of the fourth hole-shaped blank along the axial direction of the fourth hole-shaped blank, so that the smallest end of the fourth hole-shaped blank is bent at a predetermined angle, thereby obtaining a fifth hole-shaped blank;

[0007] Step S14: Based on the fifth hole profile blank, a rolling assembly is used to roll the fifth hole profile blank to obtain a desired forging.

[0008] In some embodiments, in step S11, the second hole-shaped blank includes a first molding part, a second molding part, and a third molding part; the two ends of the second molding part are fixedly connected to the first molding part and the second molding part respectively; the third hole-shaped blank includes a fourth molding part, a fifth molding part, and a sixth molding part; the two ends of the fifth molding part are integrally formed with the fourth molding part and the sixth molding part respectively, and are fixedly connected in a smooth transition; after the second hole-shaped blank is shaped, the first molding part is processed into the fourth molding part, the second molding part is processed into the fifth molding part, and the third molding part is processed into the sixth molding part; wherein, the inner diameter of the third hole-shaped blank is larger than the inner diameter of the second hole-shaped blank, the inner diameter of the fourth molding part is equal to the inner diameter of the fifth molding part, and the outer diameter of the fourth molding part is larger than the outer diameter of the fifth molding part; the outer diameter of the fifth molding part is equal to the outer diameter of the sixth molding part, and the inner diameter of the sixth molding part is smaller than the inner diameter of the fifth molding part.

[0009] In some embodiments, in step S12: the fourth hole-shaped blank includes a seventh molding part, an eighth molding part, and a ninth molding part, and the two ends of the eighth molding part are respectively integrally formed with one end of the seventh molding part and one end of the ninth molding part to form a smooth transition connection; after stamping the third hole-shaped blank, the fourth molding part is processed into the seventh molding part, the fifth molding part is processed into the eighth molding part, and the sixth molding part is processed into the ninth molding part; wherein, the inner diameter of the seventh molding part gradually decreases in the direction approaching the eighth molding part, the inner diameter of the eighth molding part gradually decreases in the direction approaching the ninth molding part, and the inner diameter of the ninth molding part gradually decreases in the direction away from the eighth molding part.

[0010] In some embodiments, in step S13, the fifth hole-shaped blank includes a tenth forming part, an eleventh forming part, and a twelfth forming part; the two ends of the eleventh forming part are respectively integrally formed with one end of the tenth forming part and one end of the twelfth forming part to form a smooth transition connection; the extruded end of the fourth hole-shaped blank is the other end of the ninth forming part, the end of the ninth forming part is bent at a predetermined angle after extrusion and is processed into the twelfth forming part, the seventh forming part is processed into the tenth forming part, and the eighth forming part is processed into the eleventh forming part; wherein, the inner diameter of the tenth forming part gradually decreases in the direction approaching the eleventh forming part, the inner diameter of the first forming part gradually decreases in the direction approaching the twelfth forming part, the inner diameter of the twelfth forming part decreases in the direction away from the eleventh forming part, the reduction in the inner diameter of the twelfth forming part is greater than the reduction in the inner diameter of the eleventh forming part, and the reduction in the inner diameter of the eleventh forming part is greater than the reduction in the inner diameter of the tenth forming part.

[0011] In some embodiments, in step S14, the forging includes a thirteenth forming part, a fourteenth forming part, and a fifteenth forming part, and both ends of the fourteenth forming part are respectively integrally formed with one end of the thirteenth forming part and one end of the fifteenth forming part to form a smooth transition connection; after the rolling assembly rolls the fifth hole-shaped blank, the tenth forming part is processed into the thirteenth forming part, the eleventh forming part is processed into the fourteenth forming part, and the twelfth forming part is processed into the fifteenth forming part; wherein, part of the thirteenth forming part protrudes outward at equal distances in a direction away from the central axis of the forging, part of the inner surface of the fourteenth forming part protrudes outward at equal distances in a direction close to the central axis of the forging, and part of the inner surface of the fifteenth forming part protrudes outward at equal distances in a direction close to the central axis of the forging.

[0012] In some embodiments, the rolling assembly includes a movable core mold, a rolling core stick, a rolling upper cover, a rolling main stick mold, and a rolling lower cover; the movable stick core mold is detachably connected to the rolling core stick through a center hole arranged thereon; the movable stick core mold is spaced apart from the rolling main stick mold; the rolling upper cover is detachably connected to one end of the rolling main stick mold, and the rolling lower cover is detachably connected to the other end of the rolling main stick mold; the outer surface of the movable stick core mold has the same shape as the outer surface of the forging; the outer surface of the rolling main stick mold has the same shape as the inner surface of the forging; wherein, when the rolling assembly rolls the fifth hole-shaped blank, it includes a first working state, a second working state, and a third working state; the first working state includes sleeved the fifth hole-shaped blank on the rolling main stick mold, so that the end of the tenth forming part of the fifth hole-shaped blank abuts against the rolling lower cover, and then the rolling upper cover abuts against the twelfth forming part, and then the The rolling main roll die rotates at a predetermined rotation speed, and the moving roll core die moves close to the rolling main roll die at a first moving speed until the outer peripheral surface of part of the fifth hole-shaped blank abuts against the outer peripheral surface of part of the moving roll core die; the second working state includes: based on the abutment of the outer peripheral surface of part of the fifth hole-shaped blank with the outer peripheral surface of part of the moving roll core die, the moving roll core die moves close to the rolling main roll die at a second moving speed until the outer peripheral surface of the moving roll core die is engaged with the outer peripheral surface of the fifth hole-shaped blank, and the outer peripheral surface of the rolling main roll die is over-engaged with the inner peripheral surface of the fifth hole-shaped blank; the third working state includes, based on the engagement of the outer peripheral surface of the moving roll core die with the outer peripheral surface of the fifth hole-shaped blank, the outer peripheral surface of the rolling main roll die is engaged with the inner peripheral surface of the fifth hole-shaped blank, and the moving roll core die gradually decreases from the second moving speed to the third moving speed to extrude the rolling main roll die to move until the forging is obtained.

[0013] In some embodiments, the predetermined rotation speed of the rolling main roll mold is 1 to 1.5 rad / s.

[0014] In some embodiments, the first moving speed is 0.5-1 mm / s.

[0015] In some embodiments, the second moving speed is 1.2-1.5 mm / s.

[0016] In some embodiments, the third moving speed is 0.6-0.4 mm / s.

[0017] In order to solve the problem that the use of rectangular rings in the prior art to produce casings may cause severe local deformation of forgings and uneven structural properties inside the forgings, the present invention has the following advantages:

[0018] Through step S11 to step S14, the second hole-shaped blank is gradually processed into the required forging, and the shape of the forging is gradually shaped according to the principle of equal volume extrapolation, so that the local deformation of the forging is stable, the internal structure and performance are more uniform, and the product production process is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A flow chart of a forming method for a high-temperature alloy special-shaped forging

[0020] Figure 2 This is a process diagram of the forming process of a high-temperature alloy special-shaped forging;

[0021] Figure 3 It is a schematic diagram of the shape change process from the second hole type blank to the forging.

[0022] In the figure: 10, material bar; 20, upsetting assembly; 21, press table; 22, first closed tire membrane; 23, first ring gasket; 30, columnar blank; 40, first punching assembly; 41, second closed tire membrane; 42, first punch; 43, second ring gasket; 50, first hole blank; 60, second hole blank; 61, first molding part; 62, second molding part; 63, third molding part; 70, third hole blank; 71, fourth molding part; 72, fifth molding part; 73, sixth molding part; 80, second punching assembly; 81, third closed tire mold; 82, second Punch; 83, third gasket; 84, forming pressure ring; 90, fourth hole-shaped blank; 91, seventh forming part; 92, eighth forming part; 93, ninth forming part; 100, fifth hole-shaped blank; 101, tenth forming part; 102, eleventh forming part; 103, twelfth forming part; 200, rolling assembly; 201, moving stick core mold; 202, rolling core stick; 203, rolling upper cover; 204, rolling main stick mold; 205, rolling lower cover; 300, forging; 301, thirteenth forming part; 302, fourteenth forming part; 303, fifteenth forming part. DETAILED DESCRIPTION

[0023] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0024] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0025] This embodiment discloses a method for forming a high temperature alloy special-shaped forging 300, such as Figure 1 As shown, the following steps are included:

[0026] Step S11: Based on the second hole-shaped blank 60 , shaping the second hole-shaped blank 60 to obtain a third hole-shaped blank 70 ;

[0027] Step S12: Based on the third hole profile blank 70 , punching the third hole profile blank 70 to obtain a fourth hole profile blank 90 ;

[0028] Step S13: Based on the fourth hole-shaped blank 90, the smallest end of the fourth hole-shaped blank 90 is extruded along the axial direction of the fourth hole-shaped blank 90, so that the smallest end of the fourth hole-shaped blank 90 is bent at a predetermined angle to obtain a fifth hole-shaped blank 100;

[0029] Step S14: Based on the fifth groove blank 100 , the fifth groove blank 100 is rolled by using the rolling assembly 200 to obtain the required forging 300 .

[0030] In this embodiment, through steps S11 to S14, the second hole-shaped blank 60 is gradually processed into the required forging 300, and the shape of the forging 300 is gradually shaped according to the principle of equal volume extrapolation, so that the local deformation of the forging 300 is stable, the internal structure and performance are more uniform, and the product production process is more stable.

[0031] In this embodiment, before obtaining the second hole-shaped blank 60, the first hole-shaped blank 50 is obtained by sawing, heating, upsetting and punching the alloy rod, and the second hole-shaped blank 60 is obtained by expanding the first hole-shaped blank 50; the specific method of obtaining the first hole-shaped blank 50 by sawing, heating, upsetting and punching the alloy rod is as follows: first, the alloy material rod 10 is sawed according to preset specifications, and then the sawed rod is heated to a preset temperature of 1000-1100°C and kept warm for a time of: the effective thickness of the rod × 4min / 10mm, and the heated material rod 10 is placed in the cavity of the first closed tire mold in the upsetting component 20, and one end face of the rod is abutted against the first ring gasket 23 in the first closed tire mold cavity, and the other end face is abutted against the press table 21. Figure 2 As shown, the position of the press platform 21 is located at the upper end of the material rod 10, and then the press platform 21 is pressed down with a preset force F1, so that the press platform 21 presses the material rod 10 to a preset height to obtain a columnar blank 30, and then the columnar blank 30 is placed in the cavity of the second closed mold in the first stamping assembly 40, so that the lower end surface of the columnar blank 30 abuts against the second ring pad 43 in the first stamping assembly 40, and then the first punch 42 is used to press down the columnar blank 30, so as to obtain the first hole-type blank 50. In this embodiment, the process of forming the first hole-shaped blank 50 to the third hole-shaped blank 70 is specifically as follows: the first hole-shaped blank 50 is placed on a rolling mill for rolling, so that the inner diameter and the outer diameter of the first hole-shaped blank 50 become larger and the wall thickness becomes thinner, thereby obtaining the second hole-shaped blank 60; and then the second hole-shaped blank 60 is rolled by a special-shaped rolling mill (existing technology, which will not be described in detail here) to obtain the third hole-shaped blank 70 of the desired shape.

[0032] In some embodiments, Figure 2 , Figure 3As shown, in step S11, the second hole-shaped blank 60 includes a first molding part 61, a second molding part 62, and a third molding part 63; the two ends of the second molding part 62 are respectively fixedly connected to the first molding part 61 and the second molding part 62; the third hole-shaped blank 70 includes a fourth molding part 71, a fifth molding part 72, and a sixth molding part 73; the two ends of the fifth molding part 72 are respectively integrally formed with the fourth molding part 71 and the sixth molding part 73 to be fixedly connected in a smooth transition; after the second hole-shaped blank 60 is shaped, the first molding part 61 is The fourth molding part 71 is processed, the second molding part 62 is processed into the fifth molding part 72, and the third molding part 63 is processed into the sixth molding part 73; wherein, the inner diameter of the third hole-shaped blank 70 is larger than the inner diameter of the second hole-shaped blank 60, the inner diameter of the fourth molding part 71 is equal to the inner diameter of the fifth molding part 72, and the outer diameter of the fourth molding part 71 is larger than the outer diameter of the fifth molding part 72; the outer diameter of the fifth molding part is equal to the outer diameter of the sixth molding part 73, and the inner diameter of the sixth molding part 73 is smaller than the inner diameter of the fifth molding part 72.

[0033] In this embodiment, the third hole-shaped blank 70 is obtained by isovolumetric calculation based on the forging 300, and the shapes of the fourth forming part 71, the fifth forming part 72, and the sixth forming part 73 are all obtained by the first forming part 61, the second forming part 62, and the third forming part 63 on the second hole-shaped blank 60 based on the corresponding parts of the forging 300, so that the shapes of the fourth forming part 71, the fifth forming part 72, and the sixth forming part 73 are closer to the shapes of the corresponding parts of the forging 300 relative to the first forming part 61, the second forming part 62, and the third forming part 63. Since the material of the forging 300 is usually a high-temperature alloy, its hardness is relatively large. By shaping the second hole-shaped blank 60 to obtain the third hole-shaped blank 70, the local deformation of the third hole-shaped blank 70 can be stabilized, and the internal structure performance is more uniform, which can avoid the problem of excessive deformation caused by the direct processing of the second hole-shaped blank 60 to the required forging 300, and the local stress changes sharply, resulting in uneven internal structure, thereby causing the problem of unqualified product quality.

[0034] In some embodiments, Figure 2 , Figure 3As shown, in step S12: the fourth hole-shaped blank 90 includes a seventh molding part 91, an eighth molding part 92, and a ninth molding part 93, and the two ends of the eighth molding part 92 are integrally formed with one end of the seventh molding part 91 and one end of the ninth molding part 93 to form a smooth transition connection; after the third hole-shaped blank 70 is stamped, the fourth molding part 71 is processed into the seventh molding part 91, the fifth molding part 72 is processed into the eighth molding part 92, and the sixth molding part 73 is processed into the ninth molding part 93; wherein, the inner diameter of the seventh molding part 91 gradually decreases in a direction approaching the eighth molding part 92, the inner diameter of the eighth molding part 92 gradually decreases in a direction approaching the ninth molding part 93, and the inner diameter of the ninth molding part 93 gradually decreases in a direction away from the eighth molding part 92.

[0035] In this embodiment, the third hole-profile blank 70 is placed in the cavity of the third closed tire mold 81 in the second stamping assembly 80, and the end of the sixth forming part 73 is abutted against the third gasket 83 in the second stamping assembly 80, and then the second punch 82 in the second stamping assembly 80 is moved along the center axis of the third hole-profile blank 70 from the fourth forming part 71 to the sixth forming part 73, and the inner surface of the third hole-profile blank 70 is squeezed until the outer surface of the third hole-profile blank 70 abuts against the inner surface of the third closed tire, thereby obtaining a fourth hole-profile blank 90. By stamping the third hole-shaped blank 70, a fourth hole-shaped blank 90 close to the required forging 300 can be further obtained, so that the fourth forming part 71 can be processed into the seventh forming part 91, the fifth forming part 72 can be processed into the eighth forming part 92, and the sixth forming part 73 can be processed into the ninth forming part 93, and the surface shape of the second punch 82 is close to the inner surface shape of the forging 300, and the surface shape inside the third closed fetal membrane is close to the outer surface shape of the forging 300, so that after the third hole-shaped blank 70 is processed into the fourth hole-shaped blank 90, the shape of the fourth hole-shaped blank 90 is closer to the shape of the forging 300 than the shape of the third hole-shaped blank 70, thereby avoiding the problem of excessive deformation of the third hole-shaped blank 70 and generation of large internal stress when the third hole-shaped blank 70 is directly processed into the required forging 300, resulting in uneven local deformation of the third hole-shaped blank 70 and uneven internal structure, thereby causing the problem of unqualified product quality.

[0036] In some embodiments, in step S13, the fifth hole-shaped blank 100 includes a tenth forming part 101, an eleventh forming part 102, and a twelfth forming part 103; the two ends of the eleventh forming part 102 are respectively integrally formed with one end of the tenth forming part 101 and one end of the twelfth forming part 103 to smoothly transition and connect; the extruded end of the fourth hole-shaped blank 90 is the other end of the ninth forming part 93, and the end of the ninth forming part 93 is bent at a predetermined angle after being extruded and processed into the twelfth forming part 103, the seventh forming part 91 is processed into the tenth forming part 101, and the eighth forming part 92 is processed into the tenth forming part 101. The molding portion 92 is processed into the eleventh molding portion 102; wherein, the inner diameter of the tenth molding portion 101 gradually decreases in the direction approaching the eleventh molding portion 102, the inner diameter of the first molding portion 61 gradually decreases in the direction approaching the twelfth molding portion 103, the inner diameter of the twelfth molding portion 103 decreases in the direction away from the eleventh molding portion 102, the reduction in the inner diameter of the twelfth molding portion 103 is greater than the reduction in the inner diameter of the eleventh molding portion 102, and the reduction in the inner diameter of the eleventh molding portion 102 is greater than the reduction in the inner diameter of the tenth molding portion 101.

[0037] In this embodiment, if Figure 2As shown, by rotating the second stamping assembly 80 together with the fourth hole-shaped blank 90 therein 180°, the positions of the seventh forming portion 91 and the ninth forming portion 93 are interchanged, and the seventh forming portion 91 of the fourth hole-shaped blank 90 is located below the ninth forming portion 93. Since the inner diameter of the ninth forming portion 93 is smaller than the inner diameter of the seventh forming portion 91, the diameter of the second punch 82 at the point where it abuts the ninth forming portion 93 is smaller than the diameter at the point where it abuts the seventh forming portion 91. Therefore, the fourth hole-shaped blank 90 will not fall off the second punch 82. After the second stamping assembly 80 together with the fourth hole-shaped blank 90 inside it is rotated 180°, the third gasket 83 is removed, and then one end of the forming pressure ring 84 is abutted against the end of the ninth forming part 93, and the forming pressure ring 84 is driven by a force of magnitude F2 to extrude the ninth forming part 93 until the inner surface of the fourth hole-shaped blank 90 and the second punch 82 have an interference fit, and the end of the ninth forming part 93 is bent at a predetermined angle after being extruded to be processed into the twelfth forming part 103, and the outer surface of the fourth hole-shaped blank 90 and the inner surface of the third closed tire mold 81 have an interference fit to obtain the fifth hole-shaped blank 100. Since the shape of the forging 300 is a special-shaped forging 300, the shape of its surface is not uniform. By extruding the ninth forming part 93 with the forming pressure ring 84, the shapes of the tenth forming part 101, the eleventh forming part 102, and the twelfth forming part 103 of the fifth hole-shaped blank 100 are closer to the shapes of the corresponding parts of the forging 300 than the shapes of the seventh forming part 91, the eighth forming part 92, and the ninth forming part 93. This can avoid the fourth hole-shaped blank 90 from being deformed too much and generating large internal stress when the fourth hole-shaped blank 90 is directly processed into the required forging 300, resulting in uneven local deformation of the fourth hole-shaped blank 90 and uneven internal structure, thereby causing the problem of unqualified product quality. And in this step, if Figure 2 , Figure 3 As shown, before the second stamping assembly 80 and the fourth hole-shaped blank 90 are rotated 180°, the ninth forming part 93 is in contact with the third gasket 83, and there is a gap between the ninth forming part 93 and the second punch 82. By rotating the second stamping assembly 80 together with the fourth hole-shaped blank 90 therein 180°, and using the forming pressure ring 84 to extrude and bend the ninth forming part 93 to obtain the twelfth forming part 103, the gap can be filled, so that the shape of the twelfth forming part 103 is closer to the shape of the corresponding part of the forging 300.

[0038] In some embodiments, in step S14, the forging 300 includes a thirteenth forming part 301, a fourteenth forming part 302, and a fifteenth forming part 303, and the two ends of the fourteenth forming part 302 are respectively integrally formed with one end of the thirteenth forming part 301 and one end of the fifteenth forming part 303 to form a smooth transition connection; after the rolling assembly 200 rolls the fifth hole-shaped blank 100, the tenth forming part 101 is processed into the thirteenth forming part 301, the eleventh forming part 102 is processed into the fourteenth forming part 302, and the twelfth forming part 103 is processed into the fifteenth forming part 303; wherein, part of the thirteenth forming part 301 is equidistantly convex in a direction away from the central axis of the forging 300, part of the inner surface of the fourteenth forming part 302 is equidistantly convex in a direction close to the central axis of the forging 300, and part of the inner surface of the fifteenth forming part 303 is equidistantly convex in a direction close to the central axis of the forging 300.

[0039] In this embodiment, the tenth forming part 101, the eleventh forming part 102, and the twelfth forming part 103 are further processed to form the thirteenth forming part 301, the fourteenth forming part 302, and the fifteenth forming part 303, so as to avoid the fourth hole-shaped blank 90 being deformed too much and generating large internal stress when the fourth hole-shaped blank 90 is directly processed into the required forging 300, resulting in uneven local deformation of the fourth hole-shaped blank 90 and uneven internal structure, thereby causing the problem of unqualified product quality. And because the twelfth forming part 103 is obtained by squeezing the ninth forming part 93 by the forming pressure ring 84, the shape of the twelfth forming part 103 is already relatively close to the shape of the fifteenth forming part 303, because the end of the twelfth forming part 103 is horizontal, it is easier to process it into the fifteenth forming part 303, and at the same time, it is not good for the twelfth forming part 103 to undergo a large deformation before it can become the fifteenth forming part 303.

[0040] In some embodiments, Figure 2 , Figure 3As shown, the rolling assembly 200 includes a mobile core mold, a rolling core stick 202, a rolling upper cover 203, a rolling main stick mold 204, and a rolling lower cover 205; the mobile stick core mold 201 is detachably connected to the rolling core stick 202 through a center hole arranged thereon; the mobile stick core mold 201 is spaced apart from the rolling main stick mold 204; the rolling upper cover 203 is detachably connected to one end of the rolling main stick mold 204, and the rolling lower cover 205 is detachably connected to the other end of the rolling main stick mold 204; the outer surface of the mobile stick core mold 201 is detachably connected to the The outer surface shape of the forging 300 is the same; the outer surface of the rolling main stick mold 204 is the same as the inner surface shape of the forging 300; wherein, when the rolling assembly 200 rolls the fifth hole profile blank 100, it includes a first working state, a second working state, and a third working state; the first working state includes sleeve-fitting the fifth hole profile blank 100 on the rolling main stick mold 204, making the end of the tenth forming part 101 of the fifth hole profile blank 100 abut against the rolling lower cover 205, and then rolling the upper cover 203 and the twelfth forming part 103 The rolling main roll mold 204 is abutted, and then the rolling main roll mold 204 rotates at a predetermined rotation speed, and the mobile roll core mold 201 moves close to the rolling main roll mold 204 at a first moving speed until the outer circumference of the fifth hole-shaped blank 100 is partially abutted against the outer circumference of the mobile roll core mold 201; the second working state includes: based on the abutment of the outer circumference of the fifth hole-shaped blank 100 with the outer circumference of the mobile roll core mold 201, the mobile roll core mold 201 moves close to the rolling main roll mold 204 at a second moving speed until the outer circumference of the mobile roll core mold 201 The outer peripheral surface of the rolling main stick mold 204 is engaged with the inner peripheral surface of the fifth hole-shaped blank 100; the third working state includes, based on the outer peripheral surface of the movable stick core mold 201 being engaged with the outer peripheral surface of the fifth hole-shaped blank 100, the outer peripheral surface of the rolling main stick mold 204 is engaged with the inner peripheral surface of the fifth hole-shaped blank 100, and the movable stick core mold 201 gradually decreases from the second moving speed to the third moving speed to extrude the rolling main stick mold 204 until the forging 300 is obtained.

[0041] In this embodiment, in the first working state, the fifth hole profile blank 100 is sleeved on the rolling main stick mold 204, so that the end of the tenth forming part 101 of the fifth hole profile blank 100 is abutted against the rolling lower cover 205, and then the rolling upper cover 203 is abutted against the twelfth forming part 103, and the rolling lower cover 205 and the rolling upper cover 203 are respectively detachably connected to the rolling main stick mold 204, so that the rolling upper cover 203 and the rolling lower cover 205 fix the position of the fifth hole profile blank 100. Subsequently, the rolling main stick mold 204 rotates at a predetermined rotational speed, and the moving stick core mold 201 moves close to the rolling main stick mold 204 at a first moving speed until a portion of the outer circumference of the fifth hole-shaped blank 100 abuts against a portion of the outer circumference of the moving stick core mold 201. In the first working state, the main purpose is to make the moving stick core mold 201 block abut against a portion of the outer circumference of the fifth hole-shaped blank 100. Therefore, the first moving speed is usually small to avoid the moving stick core mold 201 from moving at an excessively high speed, which may cause a large force to be generated when the moving stick core mold 201 block abuts against the fifth hole-shaped blank 100, resulting in excessive local stress in the fifth hole-shaped blank 100 and deformation. In the second working state, based on the contact between the outer circumference of part of the fifth pass blank 100 and the outer circumference of part of the moving stick core die 201, the moving stick core die 201 moves close to the rolling main stick die 204 at the second moving speed until the outer circumference of the moving stick core die 201 is over-engaged with the outer circumference of the fifth pass blank 100, and the outer circumference of the rolling main stick die 204 is over-engaged with the inner circumference of the fifth pass blank 100, thereby achieving the position fixation of the moving stick core die 201 and the rolling main stick die 204. In the third working state, the moving stick core die 201 gradually decreases from the second moving speed to the third moving speed to squeeze the rolling main stick die 204 to move until the forging 300 is obtained. In this process, the outer circumference of the forging 300 is interference fit with the outer circumference of the moving stick core die 201, the inner circumference of the forging 300 is interference fit with the outer circumference of the rolling main stick die 204, and the thickness of the forging 300 after extrusion is less than the thickness of the fifth control blank, and finally the forging 300 is obtained. Since the fifth pass blank 100 will be extruded and deformed in the third working state, the gradually decreasing moving speed of the moving stick core die 201 is conducive to the control of the extrusion deformation of the fifth pass blank 100.

[0042] In some embodiments, the predetermined rotation speed of the rolling main roll mold 204 is 1 to 1.5 rad / s.

[0043] In this embodiment, the rotation speed of the rolling main roll die 204 is set to 1-1.5 rad / s, which can make the rotation speed of the fifth hole-shaped blank 100 smaller, thereby facilitating the control of the deformation of the fifth hole-shaped blank 100 .

[0044] In some embodiments, the first moving speed is 0.5-1 mm / s.

[0045] In this embodiment, the first moving speed is set to 0.5-1 mm / s, so that the moving speed of the moving stick core mold 201 is relatively small, avoiding the increased extrusion pressure generated when the moving stick core mold 201 contacts the fifth hole-shaped blank 100 due to excessive moving speed, causing the fifth hole-shaped blank 100 to produce a larger deformation.

[0046] In some embodiments, the second moving speed is 1.2-1.5 mm / s.

[0047] In this embodiment, the second moving speed is set to 1.2~1.5mm / s, and the second moving speed is greater than the first moving speed, so that the force between the fifth hole-shaped blank 100 and the movable stick core mold 201 and the rolling main stick mold 204 increases. Finally, under the extrusion of the movable stick core mold 201, the fifth hole-shaped blank 100 is basically engaged with the movable stick core mold 201 and the rolling main stick mold 204 to achieve a relatively stable connection structure.

[0048] In some embodiments, the third moving speed is 0.6-0.4 mm / s.

[0049] In this embodiment, the second moving speed is reduced to the third moving speed of 0.6 to 0.4 mm / s, so that the extrusion pressure of the moving rod core mold 201 on the fifth hole-shaped blank 100 gradually decreases, so that during the deformation process of the fifth hole-shaped blank 100, as the wall thickness gradually decreases and the compressive strength decreases, the extrusion pressure is correspondingly reduced, and the fifth hole-shaped blank 100 can be deformed evenly, its organizational structure is more intact, and the quality of the forging 300 after forming is better.

[0050] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present disclosure.

Claims

1. A method for forming a high-temperature alloy special-shaped forging, characterized in that: The forming method of the high temperature alloy special-shaped forging comprises the following steps: Step S11: Based on the second hole profile blank, shaping the second hole profile blank to obtain a third hole profile blank; Step S12: based on the third hole profile blank, punching the third hole profile blank to obtain a fourth hole profile blank; Step S13: Based on the fourth hole-shaped blank, extruding the smallest end of the fourth hole-shaped blank along the axial direction of the fourth hole-shaped blank, so that the smallest end of the fourth hole-shaped blank is bent at a predetermined angle, thereby obtaining a fifth hole-shaped blank; Step S14: Based on the fifth hole profile blank, a rolling assembly is used to roll the fifth hole profile blank to obtain a desired forging.

2. The forming method of a high temperature alloy special-shaped forging according to claim 1, characterized in that: In step S11, the second hole-shaped blank includes a first molding part, a second molding part, and a third molding part; the two ends of the second molding part are fixedly connected to the first molding part and the second molding part respectively; the third hole-shaped blank includes a fourth molding part, a fifth molding part, and a sixth molding part; the two ends of the fifth molding part are integrally formed with the fourth molding part and the sixth molding part respectively, and are fixedly connected in a smooth transition; after the second hole-shaped blank is shaped, the first molding part is processed into the fourth molding part, the second molding part is processed into the fifth molding part, and the third molding part is processed into the sixth molding part; wherein, the inner diameter of the third hole-shaped blank is larger than the inner diameter of the second hole-shaped blank, the inner diameter of the fourth molding part is equal to the inner diameter of the fifth molding part, and the outer diameter of the fourth molding part is larger than the outer diameter of the fifth molding part; the outer diameter of the fifth molding part is equal to the outer diameter of the sixth molding part, and the inner diameter of the sixth molding part is smaller than the inner diameter of the fifth molding part.

3. The forming method of a high temperature alloy special-shaped forging according to claim 2, characterized in that: In step S12: the fourth hole-shaped blank includes a seventh forming part, an eighth forming part, and a ninth forming part, and the two ends of the eighth forming part are respectively integrally formed with one end of the seventh forming part and one end of the ninth forming part to form a smooth transition connection; after stamping the third hole-shaped blank, the fourth forming part is processed into the seventh forming part, the fifth forming part is processed into the eighth forming part, and the sixth forming part is processed into the ninth forming part; wherein, the inner diameter of the seventh forming part gradually decreases in the direction approaching the eighth forming part, the inner diameter of the eighth forming part gradually decreases in the direction approaching the ninth forming part, and the inner diameter of the ninth forming part gradually decreases in the direction away from the eighth forming part.

4. The forming method of a high temperature alloy special-shaped forging according to claim 3, characterized in that: In step S13, the fifth hole-shaped blank includes a tenth forming part, an eleventh forming part, and a twelfth forming part; the two ends of the eleventh forming part are respectively integrally formed with one end of the tenth forming part and one end of the twelfth forming part to smoothly transition and connect; the extruded end of the fourth hole-shaped blank is the other end of the ninth forming part, the end of the ninth forming part is bent at a predetermined angle after being extruded and processed into the twelfth forming part, the seventh forming part is processed into the tenth forming part, and the eighth forming part is processed into the eleventh forming part; wherein, the inner diameter of the tenth forming part gradually decreases in the direction approaching the eleventh forming part, the inner diameter of the first forming part gradually decreases in the direction approaching the twelfth forming part, the inner diameter of the twelfth forming part decreases in the direction away from the eleventh forming part, the reduction amplitude of the inner diameter of the twelfth forming part is greater than the reduction amplitude of the inner diameter of the eleventh forming part, and the reduction amplitude of the inner diameter of the eleventh forming part is greater than the reduction amplitude of the inner diameter of the tenth forming part.

5. The method for forming a high-temperature alloy special-shaped forging according to claim 4, characterized in that: In step S14, the forging includes a thirteenth forming part, a fourteenth forming part, and a fifteenth forming part, and the two ends of the fourteenth forming part are respectively integrally formed with one end of the thirteenth forming part and one end of the fifteenth forming part to form a smooth transition connection; after the rolling assembly rolls the fifth hole-shaped blank, the tenth forming part is processed into the thirteenth forming part, the eleventh forming part is processed into the fourteenth forming part, and the twelfth forming part is processed into the fifteenth forming part; wherein, part of the thirteenth forming part is equidistantly convex in a direction away from the central axis of the forging, part of the inner surface of the fourteenth forming part is equidistantly convex in a direction close to the central axis of the forging, and part of the inner surface of the fifteenth forming part is equidistantly convex in a direction close to the central axis of the forging.

6. The method for forming a high-temperature alloy special-shaped forging according to claim 5, characterized in that: The rolling assembly comprises a movable core mold, a rolling core stick, a rolling upper cover, a rolling main stick mold, and a rolling lower cover; the movable stick core mold is detachably connected to the rolling core stick through a center hole arranged thereon; the movable stick core mold is spaced apart from the rolling main stick mold; the rolling upper cover is detachably connected to one end of the rolling main stick mold, and the rolling lower cover is detachably connected to the other end of the rolling main stick mold; the outer surface of the movable stick core mold has the same shape as the outer surface of the forging; the outer surface of the rolling main stick mold has the same shape as the inner surface of the forging; wherein, when the rolling assembly rolls the fifth hole-shaped blank, it comprises a first working state, a second working state, and a third working state; the first working state comprises sleeveing ​​the fifth hole-shaped blank on the rolling main stick mold, so that the end of the tenth forming portion of the fifth hole-shaped blank abuts against the rolling lower cover, and then the rolling upper cover abuts against the twelfth forming portion, and then the rolling main stick mold is The stick die rotates at a predetermined rotation speed, and the movable stick core die moves close to the rolling main stick die at a first moving speed until the outer peripheral surface of part of the fifth hole-shaped blank abuts against the outer peripheral surface of part of the movable stick core die; the second working state includes: based on the abutment of the outer peripheral surface of part of the fifth hole-shaped blank with the outer peripheral surface of part of the movable stick core die, the movable stick core die moves close to the rolling main stick die at a second moving speed until the outer peripheral surface of the movable stick core die is engaged with the outer peripheral surface of the fifth hole-shaped blank, and the outer peripheral surface of the rolling main stick die is over-engaged with the inner peripheral surface of the fifth hole-shaped blank; the third working state includes, based on the engagement of the outer peripheral surface of the movable stick core die with the outer peripheral surface of the fifth hole-shaped blank, the outer peripheral surface of the rolling main stick die is engaged with the inner peripheral surface of the fifth hole-shaped blank, and the movable stick core die gradually decreases from the second moving speed to the third moving speed to extrude the rolling main stick die to move until the forging is obtained.

7. The method for forming a high temperature alloy special-shaped forging according to claim 6, characterized in that: The predetermined rotation speed of the rolling main roll mold is 1 to 1.5 rad / s.

8. The method for forming a high temperature alloy special-shaped forging according to claim 7, characterized in that: The first moving speed is 0.5-1 mm / s.

9. The method for forming a high-temperature alloy special-shaped forging according to claim 8, characterized in that: The second moving speed is 1.2-1.5 mm / s.

10. The method for forming a high temperature alloy special-shaped forging according to claim 9, characterized in that: The third moving speed is 0.6-0.4 mm / s.

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