A method for uniform forging of a T-shaped structural member

Abstract

This application discloses a uniform forging method for T-shaped structural components, relating to the field of forging technology. The method includes the following steps: heating a billet to a high-temperature forging temperature in the (α+β) two-phase region; drawing the heated billet to obtain an elongated billet; cooling the elongated billet to room temperature and then cutting it into forks to obtain a forked billet; heating the forked billet to a low-temperature forging temperature in the (α+β) two-phase region; widening the heated forked billet from the forked cut to both sides to obtain a widened billet; bending and shaping the widened billet to obtain a T-shaped billet; and heating the T-shaped billet to a high-temperature forging temperature in the (α+β) two-phase region, then placing it in a die for final forging to obtain a T-shaped die forging. This application, through a deformation path of "drawing-forking-widening-bending," effectively solves the problem of uneven microstructure and properties caused by discontinuous flow lines between the head and shank and inconsistent deformation history in the forging technology of complex titanium alloy T-shaped components.

Description

Technical Field

[0001] This application relates to the field of forging technology, specifically to a method for uniform forging of T-shaped structural parts. Background Technology

[0002] like Figure 2 As shown, the T-shaped structural component 1 has a drastic change in cross-section due to its inclusion of a rod and a head. The cross-sectional areas of the rod and the head differ by several times or even tens of times, resulting in a very complex shape. According to the complexity classification of forgings, it belongs to the most complex level, S4.

[0003] Currently, most forging processes for T-shaped structural parts involve placing one end of the billet into the cavity of the lower die upsetting tooling, and then using a flat anvil on the upper die to upset the billet along its height direction. By upsetting the head to gather material, the distribution of material between the head and the rod of the T-shaped structural part is obtained, and then the target size is obtained through repeated shaping.

[0004] However, the existing technology has two main shortcomings when performing local upsetting of the blank head of T-shaped structural parts:

[0005] First: During upsetting, the streamline direction of the head of the T-shaped structural component changes from longitudinal to transverse, while the rod remains longitudinal. The metal streamline directions of the head and the rod are inconsistent.

[0006] Second: Upsetting will inevitably lead to a large amount of deformation at the head and a small amount of deformation at the rod. This will result in uneven deformation of the T-shaped structural component, and the uneven deformation will lead to problems such as uneven microstructure properties.

[0007] Especially for T-shaped structural components used in the aerospace field, which are made of titanium alloy, the deformation amount, deformation temperature and microstructure uniformity are extremely sensitive. The above problems seriously affect the comprehensive mechanical properties, fatigue life and service reliability of titanium alloy T-shaped components, and cannot meet the high standards of microstructure uniformity required by modern aerospace products, thus affecting the safety and reliability of aircraft. Summary of the Invention

[0008] The main objective of this application is to provide a uniform forging method for T-shaped structural components, aiming to solve the technical problems of uneven microstructure and properties caused by discontinuous flow lines between the head and the rod and inconsistent deformation in the forging technology of complex T-shaped components.

[0009] The technical solution adopted in this application is as follows:

[0010] A method for uniform forging of a T-shaped structural component includes the following steps:

[0011] The billet is heated to the high-temperature forging temperature of the (α+β) two-phase region; where the (α+β) two-phase region is the temperature range in which the α phase and β phase coexist in the material;

[0012] The heated blank is drawn out to obtain an elongated blank;

[0013] After cooling the long blank to room temperature, it is cut open to obtain a forked blank.

[0014] The forked billet is heated to the low-temperature forging temperature of the (α+β) two-phase region;

[0015] The heated forked billet is widened from the forked cut to both sides to obtain a widened billet.

[0016] The expanded billet is bent and shaped to obtain a T-shaped billet;

[0017] After heating the T-shaped billet to the high-temperature forging temperature of the (α+β) two-phase region, it is placed in a mold for final forging to obtain a T-shaped die forging.

[0018] Furthermore, the forging temperature in the high-temperature zone is a heating temperature of (Tβ - 40)℃, where Tβ is the β phase transformation point of the material.

[0019] Furthermore, in the process of drawing the heated billet to obtain an elongated billet, the length L of the drawn billet satisfies: L ≈ W 头 + L 杆 W 头 For the head design width of the T-shaped structural component, L 杆 The design length of the rod section for the T-shaped structural member.

[0020] Furthermore, in the process of drawing the heated billet to obtain a long billet, the drawing deformation rate is controlled at 30 mm / s, the deformation per firing is controlled at 20%-30%, and the drawing ratio is controlled within 2.5.

[0021] Furthermore, the method for cutting the fork includes any one of water jet cutting, wire cutting, or laser cutting.

[0022] Furthermore, the width of the forked cut is 5mm-30mm, and the characteristic angle γ at the end of the forked cut is 130°-160°.

[0023] Furthermore, the forging temperature in the low-temperature zone is (Tβ - 60)℃.

[0024] Furthermore, during the widening process of the forked blank, the movement speed of the tooling used for widening is 5mm / s-10mm / s.

[0025] Furthermore, during the final forging of the die, the forging deformation is 30%-50%.

[0026] Furthermore, during the widening and bending process, graphite lubricant is sprayed onto the surface of the blank.

[0027] Furthermore, after obtaining the T-shaped forging by final forging, the T-shaped forging is annealed and held at a certain temperature before being air-cooled to room temperature.

[0028] Furthermore, the annealing temperature for the annealing process is 700℃ - 800℃.

[0029] Furthermore, the heat preservation time is 1-2 hours.

[0030] Compared with the prior art, the beneficial effects of this application are:

[0031] This application proposes a method for uniform forging of a T-shaped structural component, comprising the following steps: heating a billet to a high-temperature forging temperature in the (α+β) two-phase region; drawing the heated billet to obtain an elongated billet; cooling the elongated billet to room temperature and then cutting it into forks to obtain a forked billet; heating the forked billet to a low-temperature forging temperature in the (α+β) two-phase region; widening the heated forked billet from the forked cut to both sides to obtain a widened billet; bending and shaping the widened billet to obtain a T-shaped billet; and heating the T-shaped billet to a high-temperature forging temperature in the (α+β) two-phase region and then placing it in a die for final forging to obtain a T-shaped die forging.

[0032] This technical solution demonstrates at least the following beneficial effects:

[0033] First: Continuous and consistent streamlines: This method uses a deformation path of "lengthening-forking-widening-bending" to make the head metal naturally widen from the rod metal, ensuring that the metal streamlines of the T-shaped part's head and rod are continuous and consistent in direction, avoiding the problems of streamline disorder and cut-off of streamlines at the head-rod joint caused by the traditional upsetting method.

[0034] Second: Uniform and controllable deformation: This method enables the head and rod to undergo coordinated and continuous plastic deformation, resulting in a more uniform deformation distribution. It effectively overcomes the extreme inhomogeneity problem of large deformation in the head and almost no deformation in the rod in traditional methods. It is particularly beneficial for titanium alloys that are sensitive to deformation uniformity to obtain uniform and fine microstructure.

[0035] Third: Excellent microstructure and properties: The uniform deformation history of this method, combined with precise temperature and deformation control for titanium alloys, results in fine grains and uniform microstructure in the forgings, which significantly improves the overall mechanical properties, fatigue strength and stress corrosion resistance of the components.

[0036] Fourth: High material utilization and simplified process: The preform dimensions are accurate, and subsequent die forging directly forms the product, reducing or eliminating the machining process required to correct the streamline, thus improving material utilization and shortening the production cycle.

[0037] In summary, the uniform forging method for T-shaped structural components provided by this invention changes the existing forging process of T-shaped structural components. It proposes a method of first drawing out the long billet, and then obtaining the wide head and long rod of the T-shaped component through widening and bending. This method can effectively ensure the consistency of the streamline direction of the head and rod of the T-shaped structural component, and overcome the problem of inconsistent deformation between the head and rod during the billet making process of the T-shaped component. This method can utilize the uniformity of the structure and performance of aerospace products to improve the safety and reliability of aircraft service. Attached Figure Description

[0038] Figure 1 A flowchart of a uniform forging method for a T-shaped structural component provided in an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of an existing T-shaped structural component from one perspective;

[0040] Figure 3 This is a schematic diagram of the deformation process of a billet under a uniform forging method for a T-shaped structural component provided in an embodiment of the present invention.

[0041] Explanation of the labels in the attached drawings:

[0042] 1-T-shaped structural component, 2-cylindrical blank, 3-long blank, 4-forked blank, 5-splitting forming fixture, 6-fastening fixture, 7-widening blank, 8-bending forming fixture, 9-shaping fixture. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0044] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0045] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0047] See attached document Figure 1 This application provides a method for uniform forging of a T-shaped structural component, comprising the following steps:

[0048] S1: Heat the billet to the high-temperature forging temperature of the (α+β) two-phase region; where the (α+β) two-phase region is the temperature range in which the α phase and β phase coexist in the material;

[0049] S2: The heated blank is drawn out to obtain a long blank;

[0050] S3: After cooling the long blank to room temperature, cut it open to obtain a forked blank;

[0051] S4: Heat the forked billet to the low-temperature forging temperature of the (α+β) two-phase region;

[0052] S5: Widen the heated forked billet from the forked cut to both sides to obtain a widened billet;

[0053] S6: Bend and shape the widened billet to obtain a T-shaped billet;

[0054] S7: After heating the T-shaped billet to the high-temperature forging temperature of the (α+β) two-phase region, it is placed in a mold for final forging to obtain a T-shaped die forging.

[0055] The current forging process for T-shaped structural parts is as follows: one end of the billet is placed into the cavity of the lower die upsetting tooling, and the upper die uses a flat anvil to upset the billet along the height direction of the billet. By upsetting the head to gather the material, the distribution of the head and rod of the T-shaped structural part is obtained, and then the target size is obtained by repeated shaping.

[0056] In traditional forging processes, the upsetting method used for T-shaped structural components causes the streamline direction of the head to change from longitudinal to transverse during upset forging, while the shaft remains longitudinal. This results in inconsistent metal streamline directions between the head and shaft. Furthermore, upset forging inevitably leads to greater deformation at the head and less deformation at the shaft, causing uneven deformation in the T-shaped structural component. This uneven deformation leads to problems such as uneven microstructure and properties. This is particularly true for T-shaped structural components made of titanium alloys used in the aerospace field, which are extremely sensitive to deformation amount, deformation temperature, and microstructure uniformity. These issues severely affect the comprehensive mechanical properties, fatigue life, and service reliability of titanium alloy T-shaped components, failing to meet the high standards of microstructure and property uniformity required by modern aerospace products, thus impacting aircraft safety and reliability.

[0057] In this embodiment, the beneficial effects compared with the traditional forging process are manifested in the following aspects:

[0058] First: Continuous and consistent streamlines: This method uses a deformation path of "lengthening-forking-widening-bending". The head metal of the T-shaped structural component is obtained by naturally widening the forked metal of the rod and then undergoing bending and shaping. In this way, the head metal of the T-shaped structural component is not formed by upsetting and squeezing towards the middle. Therefore, it ensures that the metal streamlines of the head and rod of the T-shaped component are continuous and consistent in direction, avoiding the problems of streamline disorder and cut-off of streamlines at the head-rod joint caused by the traditional upsetting method.

[0059] Second: Uniform and controllable deformation: This method causes the head to be widened after forking and then bent to form a T-shaped structure. The head and the rod undergo coordinated and continuous plastic deformation. Compared with the deformation of the metal head caused by upsetting, the deformation of this method is more uniform. It effectively overcomes the extreme non-uniformity problem of large deformation of the head and basically no deformation of the rod in the traditional method. It is particularly beneficial for obtaining uniform and fine microstructure of titanium alloys that are sensitive to deformation uniformity.

[0060] Third: Excellent microstructure and properties: The uniform deformation of this method, combined with precise temperature and deformation control for titanium alloys, results in fine grains and uniform microstructure in the forgings, thereby significantly improving the overall mechanical properties, fatigue strength and stress corrosion resistance of the components.

[0061] Fourth: High material utilization and simplified process: The preform dimensions are accurate, and subsequent die forging directly forms the product, reducing or eliminating the machining process required to correct the streamline, thus improving material utilization and shortening the production cycle.

[0062] To illustrate in detail the process of the uniform forging method for a T-shaped structural component provided in this application, each step will be described in detail below:

[0063] 1) Typically, the blanking dimensions need to be determined before forging. In this embodiment, titanium alloy bars are used as raw materials for T-shaped structural parts. The blanking dimensions are determined based on the target forging weight, considering burn-off and process allowance. After the blanking dimensions are determined, a billet for machining the forging is prefabricated. The billet is heated to the high-temperature forging temperature in the (α+β) two-phase region below the phase transformation point. The high-temperature forging temperature is (Tβ - 40)℃, where Tβ is the β phase transformation point of the titanium alloy. In this embodiment, the titanium alloy is Ti-6Al-4V, and its β phase transformation point is...

[0064] Tβ is approximately 1005℃, therefore the preferred heating temperature is 965℃;

[0065] 2) Drawing and billet preparation: The heated billet is drawn on a hydraulic press to obtain an elongated billet with a length L that satisfies: L ≈ W 头 + L 杆 W 头 The width L is designed for the head of the T-shaped structural component. 杆 Design the length of the T-shaped part rod; control the elongation deformation rate at 30mm / s, control the deformation amount per heat at 20%-30%, and control the total elongation ratio within 2.5; according to the deformation amount per heat and the total elongation forging ratio requirements, the billet can be returned to the furnace to increase the number of forging heats, and after the elongation billet is completed, the billet is cooled in the air;

[0066] 3) Forked processing: After cooling the long blank to room temperature, use water jet cutting, wire cutting, or laser cutting to cut a forked section at one end of the blank along its central axis, forming a forked blank; the cut width W k The incision diameter is 5mm-30mm, and the characteristic angle γ at the end of the incision is 130°~160°.

[0067] 4) Splitting and Pre-forming: The forked billet is reheated to the low-temperature forging temperature of the (α+β) two-phase region, which is (Tβ - 60)℃. For titanium alloy Ti-6Al-4V, the β phase transformation point Tβ is about 1005°C, so the low-temperature forging temperature is preferably 965°C. After heating the forked billet, it is fixed on a fastening fixture. A splitting forming fixture is used to move along the cut direction of the forked billet. Under the action of the splitting forming fixture, the opening size of the forked billet is continuously expanded from the original length direction to the width direction to obtain a widened billet. During the splitting process, the movement speed of the fixture is 5mm / s-10mm / s.

[0068] 5) Bending and forming: Replace the splitting and forming tooling with the bending and forming tooling, and continue to move along the direction of the bar of the widened blank to further bend and widen the head of the widened blank;

[0069] 6) Shaping and Calibration: Replace the bending forming fixture with a shaping fixture, and continue moving along the direction of the expanded blank to further expand the head of the expanded blank until the head of the T-shaped part is in contact with the outer surface of the fastening fixture. Press it to the required target shape and size, and hold the pressure for a certain time to obtain the T-shaped blank. Because the obtained T-shaped blank has good dimensional and surface quality control, it does not require machining processes such as deburring or milling that damage the flow lines. It can be directly subjected to subsequent heating and die forging processes to obtain a die-forged part with complete metal flow lines.

[0070] 7) Final forming of die forging: The obtained T-shaped preform is heated before final die forging. The heating temperature is the high-temperature zone forging temperature of the (α+β) two-phase region, which is (Tβ-40)℃. Among them, the β phase transformation point of titanium alloy Ti-6Al-4V is about 1005℃, so the high-temperature zone forging temperature is preferably 965℃. Then, the final forging is carried out on the die forging equipment. The die forging deformation is 30%-50%, and a high-quality T-shaped die forging with dense structure and continuous flow lines is obtained. After the die forging is completed, the forging is cooled in air.

[0071] In the fork-opening process, in order to prevent tearing or other defects from occurring on the surface of the blank during bending, the end defect feature angle γ of the fork-opening is designed to be 130° to 160°.

[0072] Meanwhile, in the fork-opening processing step, in order to facilitate the smooth progress of the billet splitting process and minimize material waste, the width of the fork-opening billet cut should be ≥30mm. 切口 ≥5mm.

[0073] In a preferred embodiment, in order to ensure the smooth progress of the splitting process in the preforming step, the forked blank can be placed horizontally on the fastening fixture, and the splitting step can be performed by a horizontal hydraulic cylinder. Under the combined action of the weight of the forked blank itself and the supporting force of the fastening fixture, uncontrollable deformation of the blank can be avoided during splitting.

[0074] In a preferred embodiment, in order to ensure the smooth progress of the bending process during the bending forming step, multiple sets of bending forming fixtures can be added to achieve a gradual transition of large bending deformation, thereby avoiding uncontrollable deformation of the blank during bending.

[0075] In a preferred embodiment, in order to control the deformation temperature rise and microstructure of the titanium alloy during the slitting preforming and bending forming steps, graphite lubricant can be sprayed onto the contact surface between the tooling and the blank.

[0076] In a preferred embodiment, after the final forming step of die forging, a heat treatment step is also included: annealing the die forging, for the Ti-6Al-4V alloy, the annealing regime is 700℃-800℃, held for 1-2 hours, and then air-cooled.

[0077] The following example, using a specific model of T-shaped structural component, illustrates the application of the uniform forging method for T-shaped structural components described in this application in actual production. Figure 2 As shown:

[0078] (1) Blanking and heating: Ti-6Al-4V titanium alloy bars conforming to AMS 4928 standard were selected. The blanking was carried out according to the part drawings and process calculations to obtain a cylindrical blank 2 with a diameter of 200mm and a diameter of 500mm. The cylindrical blank 2 was sent into the electric furnace for heating. The heating temperature was set to 965℃ and the holding time was calculated to be 140 minutes. The holding time was calculated based on 0.7 minutes per millimeter of effective thickness of the blank.

[0079] (2) Drawing and billet preparation: The heated billet 2 is drawn on a 1600-ton high-speed forging mill. The working speed of the hydraulic press is controlled so that the drawing deformation rate is about 30 mm / s. A multi-pass drawing method is adopted, with a deformation of about 25% per pass. Finally, the billet 3 is drawn to a long shape with a cross section of about 100 mm × 120 mm and a length of about 1250 mm; wherein, the target head width W 宽 =600mm, rod length L 杆 =650mm, the billet is air-cooled after drawing.

[0080] (3) Forking process: After the billet has cooled, forking is performed using an ultra-high pressure water jet cutting machine. The water pressure is set to 380MPa and the cutting speed is 100 mm / min. A 100mm wide centerline is cut at one end of the long billet 3, with a cut length of approximately 250mm and a cut end width W.k =15mm, forming a characteristic angle γ≈150°, resulting in a forked blank 4.

[0081] (4) Splitting and preforming: The forked blank 4 is fed into a heating furnace and heated to 945℃, and held for 60 minutes. Then the forked blank 4 is placed on the fastening fixture 6, the hydraulic cylinder is started, and the splitting and forming fixture 5 is driven to move along the cut direction of the forked blank at a speed of 10mm / s, inserting into the cut and opening it. Under the action of the splitting and forming fixture 5, the opening size of the forked blank 4 is continuously expanded, from the original length direction to the width direction, to obtain the widened blank 7. During the process, F3629 graphite lubricant is sprayed on the contact surface between the blank and the fixture.

[0082] (5) Bending and forming: Replace the splitting forming tool 5 with a bending forming tool 8 with a specific arc radius, and continue to move along the direction of the rod of the widened blank 7 to further widen the head of the widened blank 7. Complete in three passes, with the bending angle increasing by about 15° in each pass, until the head initially presents a T-shaped outline.

[0083] (6) Shaping and calibration: Replace the bending forming fixture 8 with the shaping fixture 9, and continue to move along the direction of the rod of the widened blank 7 to further widen the head of the widened blank 7 until the head of the T-shaped part is in contact with the outer surface of the fastening fixture 6, press it to the required target shape and size, hold the pressure for 15 seconds and then release the pressure to obtain a T-shaped blank with accurate dimensions and a smooth surface. Since the obtained T-shaped blank has good control over size and surface quality, it does not require machining processes such as deburring and milling to avoid damaging the flow lines. It can be directly subjected to subsequent heating, die forging and other processes to obtain a die forging part with complete metal flow lines.

[0084] (7) Final forging: The T-shaped billet is reheated to 965°C and held for 60 minutes. It is then quickly transferred to the die cavity of a 20,000-ton forging press for final forging. The forging deformation is approximately 40%. The forging is immediately removed from the die after forging and air-cooled to room temperature.

[0085] (8) Heat treatment: The forgings are subjected to annealing heat treatment at 720°C ± 10°C for 2 hours, followed by air cooling.

[0086] The Ti-6Al-4V titanium alloy T-shaped forgings formed using the above process were confirmed to be free of internal defects by ultrasonic testing. Metallographic examination showed that the head and rod sections had continuous flow lines and a natural transition. The entire component exhibited a uniform microstructure, consisting entirely of equiaxed α+β bimodal structures with a grain size rating of ASTM 8-9. Mechanical property tests indicated that the tensile strength, yield strength, and elongation data of different parts of the head and rod showed minimal dispersion, fully meeting the high standards required for aerospace applications.

[0087] In summary, the present invention provides a uniform forging method for T-shaped structural components, which changes the existing forging process of T-shaped structural components. It proposes a method of first drawing out a long billet, and then obtaining the wide head and long rod of the T-shaped component through splitting and bending shaping. This method can effectively ensure the consistency of the streamline direction of the head and rod of the T-shaped structural component, and overcome the problem of inconsistent deformation history between the head and rod during the billet making process of the T-shaped component. This method can utilize the uniformity of the structure and performance of aerospace products to improve the safety and reliability of aircraft service.

[0088] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for uniform forging of a T-shaped structural component, characterized in that, For use in titanium alloy Ti-6Al-4V, the following steps are included: The billet is heated to the high-temperature forging temperature of the (α+β) two-phase region; wherein, the (α+β) two-phase region is the temperature range in which the α phase and β phase coexist in the material; the high-temperature forging temperature is the heating temperature of (Tβ-40)℃, where Tβ is the β phase transformation point of the material; The heated billet is drawn to obtain an elongated billet; the length L of the drawn billet satisfies: L ≈ W 头 + L 杆 W 头 For the head design width of the T-shaped structural component, L 杆 The design length of the rod for the T-shaped structural component; the elongation deformation rate is controlled at 30mm / s, the deformation per firing is controlled at 20%-30%, and the elongation ratio is controlled within 2.5; After cooling the long blank to room temperature, it is cut open to obtain a forked blank. The forked billet is heated to a low-temperature forging temperature in the (α+β) two-phase region; the low-temperature forging temperature is (Tβ - 60)℃. The heated forked blank is widened from the forked cut to both sides to obtain a widened blank; the width of the forked cut is 5mm-30mm, and the characteristic angle γ at the end of the forked cut is 130°-160°. The expanded billet is bent and shaped to obtain a T-shaped billet; After heating the T-shaped billet to the high-temperature forging temperature of the (α+β) two-phase region, it is placed in a mold for final forging to obtain a T-shaped die forging.

2. The uniform forging method for T-shaped structural parts according to claim 1, characterized in that, The method for cutting the fork includes any one of water jet cutting, wire cutting, or laser cutting.

3. The uniform forging method for T-shaped structural parts according to claim 1, characterized in that, During the widening process of the forked blank, the movement speed of the tooling used for widening is 5mm / s-10mm / s.

4. The uniform forging method for T-shaped structural parts according to claim 1, characterized in that, During the final forging process, the forging deformation is 30%-50%.

5. The uniform forging method for T-shaped structural parts according to claim 1, characterized in that, During the stretching and bending process, graphite lubricant is sprayed onto the surface of the blank.

6. The uniform forging method for T-shaped structural parts according to claim 1, characterized in that, After obtaining the T-shaped forging by final forging, the T-shaped forging is annealed and held at a certain temperature, and then air-cooled to room temperature.

7. The uniform forging method for T-shaped structural parts according to claim 6, characterized in that, The annealing temperature for the annealing process is 700℃ - 800℃.

8. The uniform forging method for T-shaped structural parts according to claim 6, characterized in that, The heat preservation time is 1-2 hours.

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