A forging device and method for TC4 titanium alloy bars

Abstract

The embodiment of the present application provides a forging device for TC4 titanium alloy bars, including a pre-stressing part, a bar rotary feed part, and a forging part. A round bar to be forged is fixed on the bar rotary feed part, and the bar rotary feed part drives the round bar to rotate while feeding it in the direction of the forging part; the pre-stressing part is arranged between the forging part and the bar rotary feed part, and the pre-stressing part includes a pre-stressing support platform, a pre-stressing roller mechanism, and a scraping mechanism. The pre-stressing support platform is arranged below the round bar and supports the round bar; the pre-stressing roller mechanism is arranged above the round bar, and the pre-stressing roller mechanism applies downward pressure to the round bar; the scraping mechanism is arranged on one side of the pre-stressing support platform, and the scraping mechanism rests on the surface of the round bar. The scraping mechanism coats borax on the surface of the round bar while scraping off the oxide layer on the surface of the round bar. The forging device for TC4 titanium alloy bars provided in the embodiment of the present application can remove the oxide layer on the surface of the round bar before forging the round bar, thereby improving the mechanical properties of the round bar.

Description

Technical Field

[0001] The present invention relates to the field of forging technology, and in particular to a forging device and method for a TC4 titanium alloy bar. Background Art

[0002] TC4 titanium alloy bars are widely used due to their excellent corrosion resistance, low density, high specific strength, good toughness, and weldability. During the production of TC4 titanium alloy bars, when large-diameter TC4 titanium alloy bars need to be processed into smaller diameter bars, automatic forging is typically used. Because traditional automatic forging equipment directly forges heated round bars, the oxide layer on the surface of the round bar is easily pressed into the interior of the round bar, affecting the bar's performance and easily causing cracks on the surface of the round bar. Summary of the Invention

[0003] One purpose of the present invention is to provide a forging device for TC4 titanium alloy bars, so as to solve the technical problem that traditional automatic forging equipment is unable to remove the oxide layer on the surface of the round bar before forging, which causes the oxide layer on the surface of the round bar to be easily pressed into the interior of the round bar, affecting the performance of the round bar and easily causing cracks on the surface of the round bar.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide a TC4 titanium alloy bar forging equipment, the TC4 titanium alloy bar forging equipment comprising:

[0005] Forging department;

[0006] A bar rotary feeding section, on which a round bar to be forged is fixed, and the bar rotary feeding section drives the round bar to rotate while feeding it in the direction of the forging section;

[0007] A pre-stressing part, which is arranged between the forging part and the rod rotary feeding part, and includes a pre-stressing support platform, a pre-stressing roller mechanism, and a scraping mechanism. The pre-stressing support platform is arranged below the round rod and supports the round rod; the pre-stressing roller mechanism is arranged above the round rod, and the pre-stressing roller mechanism applies downward pressure to the round rod; the scraping mechanism is arranged on one side of the pre-stressing support platform, and the scraping mechanism rests on the surface of the round rod. The scraping mechanism coats borax on the surface of the round rod while scraping off the oxide layer on the surface of the round rod.

[0008] In one embodiment, the pre-pressing roller mechanism comprises:

[0009] a first telescopic device;

[0010] A pre-pressing roller is rotatably arranged on the telescopic rod of the first telescopic device, and the pre-pressing roller applies downward pressure to the round rod.

[0011] In one embodiment, the surface of the pre-pressing roller is provided with a plurality of raised pre-pressing blocks.

[0012] In one embodiment, the scraping mechanism comprises:

[0013] A connecting block, the bottom of which is fixed on the pre-pressing support platform;

[0014] The scraping block is arranged on the connecting block, the scraping block is hollow and funnel-shaped, borax is filled in the scraping block, the bottom of the scraping block is close to the bottom of the round rod, and the angle between the linear velocity direction at the matching point on the round rod with the scraping block and the downward inclined direction of the scraping block is an obtuse angle.

[0015] In one embodiment, the scraping mechanism further includes a first elastic member, the scraping block is hingedly provided on the connecting block, one end of the first elastic member is connected to the connecting block, and the other end of the first elastic member is connected to the scraping block, and the first elastic member gives the scraping block an elastic force so that the scraping block remains in contact with the surface of the round rod.

[0016] In one embodiment, the forging portion comprises:

[0017] a forging support platform, the forging support platform being arranged below the round rod and being used to support the round rod;

[0018] a second telescopic device, the second telescopic device being arranged above the forging support platform;

[0019] A forging punch is connected to the telescopic rod of the second telescopic device.

[0020] In one embodiment, the forging part also includes a roundness measuring part, which is arranged on the forging punch. The roundness measuring part includes a mounting rod, a measuring rod, a high-temperature resistant displacement sensor, and a second elastic member. The mounting rod is horizontally arranged on both sides of the forging punch, and a plurality of vertical through holes are opened on the mounting rod; the measuring rod is slidably arranged in the vertical through holes of the mounting rod; the high-temperature resistant displacement sensor is arranged at the top of the measuring rod, and the high-temperature resistant displacement sensor measures the distance between itself and the mounting rod in real time, and the high-temperature resistant displacement sensor is electrically connected to the rod rotation feeding part and controls the movement of the rod rotation feeding part; the second elastic member is sleeved on the measuring rod, one end of the second elastic member is fixed on the mounting rod, and the other end of the two elastic members is connected to the measuring rod.

[0021] In one embodiment, the bar rotary feeding unit comprises:

[0022] A feed track, the feed track is arranged on the ground, and the direction of the feed track is toward the forging part;

[0023] A feeding platform, the feeding platform being slidably arranged on the feeding track;

[0024] a third telescopic device, wherein the telescopic end of the third telescopic device is connected to the feeding platform;

[0025] A clamp is rotatably arranged on the feeding platform, one end of the clamp clamps the round rod, and the other end of the clamp is connected to the rotating part.

[0026] In one embodiment, the forging equipment of the TC4 titanium alloy bar also includes a secondary heating device, which includes an electromagnetic heating coil and a high-temperature resistant temperature sensor. The electromagnetic heating coil is arranged around the round bar between the pre-pressing part and the bar rotation feeding part, and the high-temperature resistant temperature sensor is arranged on one side of the electromagnetic heating coil. The high-temperature resistant temperature sensor is electrically connected to the electromagnetic heating coil.

[0027] Another object of the present invention is to provide a forging method for a TC4 titanium alloy bar, using the forging equipment for the TC4 titanium alloy bar described in any one of the above embodiments, the forging method for the TC4 titanium alloy bar comprising the following steps:

[0028] S1. Heat the titanium alloy round bar to be forged to 800-950°C, and then install and fix the round bar on the bar rotary feed part;

[0029] S2, start the bar rotation feeding part, so that the round bar is rotated and fed toward the direction where the pre-pressing part and the forging part are located;

[0030] S3, the pre-pressing part first pre-presses the round bar to remove the oxide layer on the surface of the round bar and coat the surface of the round bar with borax, and reduces the deformation of the round bar caused by the forging part to reduce the probability of cracking of the round bar during forging;

[0031] S4. The pre-pressed round bar moves to the position of the forging part and is forged and formed by the forging part.

[0032] One or more of the above technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0033] The forging equipment for TC4 titanium alloy bars provided in an embodiment of the present invention utilizes a bar rotary feed portion to rotary feed the round bar after heating, and a pre-pressing portion is provided between the forging portion and the bar rotary feed portion. The round bar is pre-pressed using a pre-pressing roller mechanism and a pre-pressing support platform in the pre-pressing portion. The pre-pressing can delaminate the oxide layer originally tightly attached to the surface of the round bar from the round bar, making it easier to remove the oxide layer. Since the round bar is in a rotating state, the scraping mechanism can scrape off the oxide layer on the surface of the round bar, and simultaneously coat the surface of the round bar with borax to remove impurities on the surface of the round bar, further remove the oxide layer on the surface of the round bar, and improve the mechanical properties of the round bar. This prevents the oxide layer on the surface of the round bar from being pressed into the round bar during subsequent forging, and avoids a decrease in the mechanical properties (strength and hardness) of the round bar and the occurrence of surface cracking due to the pressing of the oxide layer. In addition, the pre-stressing part can perform preliminary shaping forging on the round bar, reducing the forging ratio of the round bar when the subsequent forging part forges the round bar, and dividing the entire round bar refinement processing into the pre-stressing part and the forging part, reducing the time required for forging in the pre-stressing part and improving the forging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A schematic structural diagram of a forging device for a TC4 titanium alloy bar provided in an embodiment of the present invention;

[0036] Figure 2 for Figure 1 A local magnified view of the middle AA;

[0037] Figure 3 for Figure 1 A partial enlarged view of the middle BB;

[0038] Figure 4 for Figure 3 Schematic diagram of the forging punch forging a round bar.

[0039] The reference numerals are as follows:

[0040] 1. Forging part; 2. Rod rotary feeding part; 3. Pre-pressing part; 4. Secondary heating device; 5. Round rod; 11. Forging support platform; 12. Second telescopic device; 13. Forging punch; 14. Roundness measuring part; 21. Feed track; 22. Feed platform; 23. Third telescopic device; 24. Clamp; 31. Pre-pressing support platform; 32. Pre-pressing roller mechanism; 33. Scraping mechanism; 141. Mounting rod; 142. Measuring rod; 143. High-temperature resistant displacement sensor; 144. Second elastic member; 321. First telescopic device; 322. Pre-pressing roller; 331. Connecting block; 332. Scraping block; 333. First elastic member; 3221. Pre-pressing block. DETAILED DESCRIPTION

[0041] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0042] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0044] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] See also Figures 1 to 4The embodiment of the present application provides a forging device for TC4 titanium alloy bars, comprising a pre-stressing part 3, a bar rotary feed part 2, and a forging part 1. A round bar 5 to be forged is fixed on the bar rotary feed part 2, and the bar rotary feed part 2 drives the round bar 5 to rotate while feeding it in the direction of the forging part 1; the pre-stressing part 3 is arranged between the forging part 1 and the bar rotary feed part 2, and the pre-stressing part 3 includes a pre-stressing support platform 31, a pre-stressing roller mechanism 32, and a scraping mechanism 33. The pre-stressing support platform 31 is arranged below the round bar 5 and supports the round bar 5; the pre-stressing roller mechanism 32 is arranged above the round bar 5, and the pre-stressing roller mechanism 32 applies downward pressure to the round bar 5; the scraping mechanism 33 is arranged on one side of the pre-stressing support platform 31, and the scraping mechanism 33 abuts against the surface of the round bar 5. The scraping mechanism 33 scrapes off the oxide layer on the surface of the round bar 5 while coating borax on the surface of the round bar 5.

[0046] The forging equipment for TC4 titanium alloy bars provided in this embodiment utilizes a bar rotary feed section 2 to rotary feed the round bar 5 after heating, and a pre-pressing section 3 is provided between the forging section 1 and the bar rotary feed section 2. The round bar 5 is pre-pressed by utilizing a pre-pressing roller mechanism 32 and a pre-pressing support platform 31 in the pre-pressing section 3. The pre-pressing can delaminate the oxide layer originally tightly attached to the surface of the round bar 5 from the round bar 5, making it easier to remove the oxide layer. Since the round bar 5 is in a rotating state, the scraping mechanism 33 can scrape off the oxide layer on the surface of the round bar 5, and simultaneously coat the surface of the round bar 5 with borax to remove impurities on the surface of the round bar 5, further remove the oxide layer on the surface of the round bar 5, and improve the mechanical properties of the round bar 5. This prevents the oxide layer on the surface of the round bar 5 from being pressed into the round bar 5 during subsequent forging by the forging section 1, thereby preventing the mechanical properties (strength and hardness) of the round bar 5 from being reduced and surface cracking caused by the pressing of the oxide layer. In addition, the pre-stressing part 3 can perform preliminary shaping forging on the round rod 5, reducing the forging ratio of the round rod 5 when the subsequent forging part 1 forges the round rod 5, and dividing the entire round rod 5 into the pre-stressing part 3 and the forging part 1 for fine processing, thereby reducing the time required for forging in the pre-stressing part 3 and improving the forging efficiency.

[0047] In one embodiment, the pre-pressing roller mechanism 32 includes a first telescopic device 321 and a pre-pressing roller 322. The pre-pressing roller 322 is rotatably mounted on the telescopic rod of the first telescopic device 321 and applies downward pressure to the round rod 5. The first telescopic device 321 can be a hydraulic cylinder or a pneumatic cylinder. The first telescopic device 321 applies downward pressure to the pre-pressing roller 322, causing the pre-pressing roller 322 to press against the surface of the round rod 5. This causes the round rod 5 to deform (reduce its diameter) and causes the oxide layer attached to the surface of the round rod 5 to separate from the rod 5, facilitating its removal.

[0048] like Figure 2As shown, in one embodiment, the surface of the pre-pressing roller 322 is provided with a plurality of raised pre-pressing blocks 3221. The shape of the pre-pressing blocks 3221 can be specifically spherical. By providing a plurality of raised pre-pressing blocks 3221 on the surface of the pre-pressing roller 322, when the pre-pressing roller 322 rolls the surface of the round rod 5, pits will be formed on the surface of the round rod 5, so that the local deformation of the surface of the round rod 5 will be larger, which is convenient for the effective delamination between the oxide layer on the surface of the round rod 5 and the body of the round rod 5, and is convenient for separation. In addition, the formed pits can make it possible for the subsequent scraping mechanism 33 to coat the surface of the round rod 5 with borax, so that the borax can stay in the pits, making it difficult for the borax to roll off the surface of the round rod 5 too quickly due to the rotation of the round rod 5, so that the borax has enough time to stay on the surface of the round rod 5, thereby improving the effect of borax protecting the round rod 5.

[0049] In one embodiment, the scraping mechanism 33 includes a connecting block 331 and a scraping block 332. The bottom of the connecting block 331 is fixed to the pre-load support platform 31; the scraping block 332 is disposed on the connecting block 331. The scraping block 332 is hollow and funnel-shaped and filled with borax. The bottom of the scraping block 332 is in close contact with the bottom of the round rod 5. The angle between the linear velocity direction at the point on the round rod 5 where the scraping block 332 meets the downward tilt of the scraping block 332 is an obtuse angle.

[0050] Since the round rod 5 is in a rotating state under the action of the rod rotating feed part 2, after the round rod 5 is rolled by the pre-pressing roller mechanism 32, a layer of stratification has already occurred between the oxide layer on the surface of the round rod 5 and the body of the round rod 5. At this time, when the rotating round rod 5 contacts the scraping block 332, the bottom of the scraping block 332 scrapes the oxide layer from the surface of the round rod 5. As the round rod 5 continues to rotate, the part of the round rod 5 where the oxide layer is scraped off rotates to the hollow area of the scraping block 332. At this time, the borax inside the scraping block 332 will contact the area of the round rod 5 where the oxide layer is scraped off, thereby coating the surface of the round rod 5 with borax, thereby improving the mechanical properties of the round rod 5, protecting the round rod 5, and reducing its oxidation rate. In addition, since the scraping mechanism 33 first scrapes off the oxide layer and then applies the borax, the borax will not be coated on the surface of the oxide layer, causing waste of borax, thereby ensuring the effective use of borax.

[0051] In one embodiment, the scraping mechanism 33 further includes a first elastic member 333, and a scraping block 332 is hingedly disposed on the connecting block 331. One end of the first elastic member 333 (which may be a spring or a spring) is connected to the connecting block 331, and the other end of the first elastic member 333 is connected to the scraping block 332. The first elastic member 333 imparts elastic force to the scraping block 332, so that the scraping block 332 remains in contact with the surface of the round rod 5. By hingedly disposing the scraping block 332 on the connecting block 331 and disposing the first elastic member 333 between the scraping block 332 and the connecting block 331, the elastic force of the first elastic member 333 is utilized to keep the scraping block 332 in contact with the surface of the round rod 5, thereby ensuring that the scraping mechanism 33 can effectively scrape off the oxide layer and apply borax.

[0052] In one embodiment, the forging section 1 includes a forging punch 13, a second telescopic device 12, and a forging support platform 11. The forging support platform 11 is disposed below the round rod 5 and is used to support the round rod 5. The second telescopic device 12 is disposed above the forging support platform 11. The forging punch 13 is connected to the telescopic rod of the second telescopic device 12. The second telescopic device 12 (specifically, a hydraulic device) drives the forging punch 13 to perform a downward impact motion, thereby causing the round rod 5 below to deform due to the impact. This, combined with the rotation of the round rod 5, achieves a refined forging process on the round rod 5.

[0053] In order to ensure that the size of the round bar 5 after forging by the forging part 1 meets the process requirements, Figure 3-4 As shown, in one embodiment, the forging part 1 also includes a roundness measuring part 14, which is arranged on the forging punch 13. The roundness measuring part 14 includes a mounting rod 141, a measuring rod 142, a high-temperature resistant displacement sensor 143, and a second elastic member 144. The mounting rod 141 is horizontally arranged on both sides of the forging punch 13, and a plurality of vertical through holes are opened on the mounting rod 141; the measuring rod 142 is slidably arranged in the vertical through holes of the mounting rod 141; the high-temperature resistant displacement sensor 143 is arranged at the top of the measuring rod 142, and the high-temperature resistant displacement sensor 143 measures the distance between itself and the mounting rod 141 in real time. The high-temperature resistant displacement sensor 143 is electrically connected to the rod rotating feed part 2 and controls the movement of the rod rotating feed part 2; the second elastic member 144 is sleeved on the measuring rod 142, one end of the second elastic member 144 is fixed on the mounting rod 141, and the other end of the two elastic members is connected to the measuring rod 142.

[0054] When the second telescopic device 12 drives the forging punch 13 to move downward (such as Figure 3As shown in the state), the roundness measuring part 14 moves downward along with the forging punch 13 until the bottom of the measuring rod 142 in the roundness measuring part 14 contacts the surface of the round rod 5. When the second telescopic device 12 continues to drive the forging punch 13 to move downward, the forging punch 13 overcomes the elastic force of the second elastic member 144, so that the forging punch 13 and the mounting rod 141 thereon continue to descend until the forging punch 13 impacts the surface of the round rod 5 (as shown in the state). Figure 4 As shown in the state), each high temperature displacement sensor 143 feedbacks the maximum vertical distance between each of them and the mounting rod 141 during this process (ie Figure 4 The value under the state). According to the maximum value fed back by each high-temperature displacement sensor 143 and the length of the measuring rod 142, the coordinates of the contact point between the measuring rod 142 and the surface of the round rod 5 can be obtained. According to the coordinates of the contact point between each measuring rod 142 and the surface of the round rod 5, the diameter and roundness of the round rod 5 at this time can be obtained. When the diameter and roundness of the round rod 5 meet the requirements, the high-temperature displacement sensor 143 gives a feed signal to the rod rotation feed unit 2 (controlling the extension of the third telescopic device 23). By providing the roundness measuring unit 14, the forging unit 1 can monitor the roundness and diameter of the round rod 5 in real time, thereby ensuring the dimensional accuracy of the round rod 5 after forging.

[0055] In one embodiment, the bar rotary feed unit 2 includes a clamp 24, a feed platform 22, a third telescopic device 23, and a feed track 21. The feed track 21 is disposed on the ground, oriented toward the forging unit 1. The feed platform 22 is slidably mounted on the feed track 21. The telescopic end of the third telescopic device 23 is connected to the feed platform 22. The clamp 24 is rotatably mounted on the feed platform 22. One end of the clamp 24 clamps the round bar 5, and the other end of the clamp 24 is connected to the rotating unit.

[0056] Since the forging process of the round rod 5 takes a lot of time, it is easy for the temperature of the round rod 5 being forged in the pre-pressing part 3 and the forging part 1 to drop below the specified range (800-950°C), which can easily cause the round rod 5 to crack during the forging process. To this end, in one embodiment, the forging equipment of the TC4 titanium alloy bar further includes a secondary heating device 4, which includes an electromagnetic heating coil and a high-temperature resistant temperature sensor. The electromagnetic heating coil surrounds the round rod 5 between the pre-pressing part 3 and the bar rotary feed part 2, and the high-temperature resistant temperature sensor is arranged on one side of the electromagnetic heating coil, and the high-temperature resistant temperature sensor is electrically connected to the electromagnetic heating coil. By providing the secondary heating device 4, the round rod 5 is secondary heated by the high-temperature resistant temperature sensor and the electromagnetic heating coil, ensuring that the temperature of the round rod 5 during forging is within the specified range, and avoiding cracking due to the round rod 5 being forged at too low a temperature.

[0057] Another object of the present invention is to provide a forging method for a TC4 titanium alloy bar, using the forging equipment for the TC4 titanium alloy bar in any of the above embodiments, the forging method for the TC4 titanium alloy bar comprises the following steps:

[0058] S1. Heat the titanium alloy round rod 5 to be forged to 800-950° C., and then install and fix the round rod 5 on the rod rotary feed part 2;

[0059] S2, start the bar rotary feeding part 2, so that the round bar 5 is rotated and fed toward the direction where the pre-pressing part 3 and the forging part 1 are located;

[0060] S3, the pre-pressing unit 3 first pre-presses the round rod 5 to remove the oxide layer on the surface of the round rod 5 and coat the surface of the round rod 5 with borax, and reduces the deformation of the round rod 5 caused by the forging unit 1 to reduce the probability of forging cracking of the round rod 5;

[0061] S4. The pre-pressed round rod 5 moves to the position of the forging part 1 and is forged and formed by the forging part 1.

[0062] The heated round rod 5 is pre-pressed by the pre-pressing part 3 to remove the oxide layer on the surface of the round rod 5 and coat the round rod 5 with borax to protect the round rod 5, thereby improving the mechanical properties of the round rod 5.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A forging equipment for TC4 titanium alloy bars, characterized in that: The forging equipment of the TC4 titanium alloy bar comprises: Forging department; A bar rotary feeding section, on which a round bar to be forged is fixed, and the bar rotary feeding section drives the round bar to rotate while feeding it in the direction of the forging section; A pre-pressing portion, the pre-pressing portion is arranged between the forging portion and the rod rotary feeding portion, the pre-pressing portion includes a pre-pressing support platform, a pre-pressing roller mechanism, and a scraping mechanism, the pre-pressing support platform is arranged below the round rod and supports the round rod; the pre-pressing roller mechanism is arranged above the round rod, and the pre-pressing roller mechanism applies downward pressure to the round rod; the scraping mechanism is arranged on one side of the pre-pressing support platform, the scraping mechanism rests on the surface of the round rod, and the scraping mechanism scrapes off the oxide layer on the surface of the round rod and coats borax on the surface of the round rod; The pre-pressing roller mechanism comprises: a first telescopic device; a pre-pressing roller, the pre-pressing roller being rotatably mounted on the telescopic rod of the first telescopic device, and applying downward pressure to the round rod; The surface of the pre-pressing roller is provided with a plurality of raised pre-pressing blocks; the scraping mechanism includes: A connecting block, the bottom of which is fixed on the pre-pressing support platform; A scraping block is provided on the connecting block, the scraping block is hollow and funnel-shaped, borax is filled in the scraping block, the bottom of the scraping block is in close contact with the bottom of the round rod, and the angle between the linear velocity direction at the point on the round rod where the scraping block meets the angle with the downward tilt of the scraping block is an obtuse angle; The scraping mechanism also includes a first elastic member, the scraping block is hingedly arranged on the connecting block, one end of the first elastic member is connected to the connecting block, and the other end of the first elastic member is connected to the scraping block. The first elastic member gives the scraping block an elastic force so that the scraping block remains in contact with the surface of the round rod.

2. The forging equipment for TC4 titanium alloy bars according to claim 1, characterized in that: The forging portion includes: a forging support platform, the forging support platform being arranged below the round rod and being used to support the round rod; a second telescopic device, the second telescopic device being arranged above the forging support platform; A forging punch is connected to the telescopic rod of the second telescopic device.

3. The forging equipment for TC4 titanium alloy bars according to claim 2, characterized in that: The forging part also includes a roundness measuring part, which is arranged on the forging punch. The roundness measuring part includes a mounting rod, a measuring rod, a high-temperature resistant displacement sensor, and a second elastic member. The mounting rod is horizontally arranged on both sides of the forging punch, and a plurality of vertical through holes are opened on the mounting rod; the measuring rod is slidably arranged in the vertical through holes of the mounting rod; the high-temperature resistant displacement sensor is arranged on the top of the measuring rod, and the high-temperature resistant displacement sensor measures the distance between itself and the mounting rod in real time. The high-temperature resistant displacement sensor is electrically connected to the rod rotation feeding part and controls the movement of the rod rotation feeding part; the second elastic member is sleeved on the measuring rod, one end of the second elastic member is fixed on the mounting rod, and the other end of the two elastic members is connected to the measuring rod.

4. The forging equipment for TC4 titanium alloy bars according to claim 1, characterized in that: The bar rotary feeding unit comprises: A feed track, the feed track is arranged on the ground, and the direction of the feed track is toward the forging part; A feeding platform, the feeding platform being slidably arranged on the feeding track; a third telescopic device, wherein the telescopic end of the third telescopic device is connected to the feeding platform; A clamp is rotatably arranged on the feeding platform, one end of the clamp clamps the round rod, and the other end of the clamp is connected to the rotating part.

5. The forging equipment for TC4 titanium alloy bars according to claim 1, characterized in that: The forging equipment for the TC4 titanium alloy bar also includes a secondary heating device, which includes an electromagnetic heating coil and a high-temperature resistant temperature sensor. The electromagnetic heating coil is arranged around the round bar between the pre-pressing part and the bar rotary feeding part. The high-temperature resistant temperature sensor is arranged on one side of the electromagnetic heating coil, and the high-temperature resistant temperature sensor is electrically connected to the electromagnetic heating coil.

6. A method for forging a TC4 titanium alloy bar, using the TC4 titanium alloy bar forging equipment according to any one of claims 1 to 5, characterized in that: The forging method of the TC4 titanium alloy bar comprises the following steps: S1. Heat the titanium alloy round bar to be forged to 800-950°C, and then install and fix the round bar on the bar rotary feed part; S2, start the bar rotation feeding part, so that the round bar is rotated and fed toward the direction where the pre-pressing part and the forging part are located; S3, the pre-pressing part first pre-presses the round bar to remove the oxide layer on the surface of the round bar and coat the surface of the round bar with borax, and reduces the deformation of the round bar caused by the forging part to reduce the probability of cracking of the round bar during forging; S4. The pre-pressed round bar moves to the position of the forging part and is forged and formed by the forging part.

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