A supercharged forging process for high alloy steel forging

Abstract

The invention discloses a boost forging process for high alloy steel forging, relates to the technical field of high alloy steel forging, and comprises the following steps: S1, blank preparation: selecting a low carbon high alloy stainless steel ingot to saw the rim and cut off the riser waste; S2, heating: placing the low carbon high alloy stainless steel ingot into a heating furnace, first heating it to 800-850° C. within 5-6 hours and keeping it warm for 2-3 hours, then heating it to 950° C. within 3-4 hours, and finally cooling it to 1160-1180° C. within 1-2 hours and keeping it warm for 5-8 hours; in the boost forging process for high alloy steel forging, when one end of a rotating rod away from a fan-shaped block moves upward, a driving rod is synchronously driven to move upward, and since an arc plate is arranged at the upper end of the driving rod, the arc plate moves up and down, and then the arc plate adjusts the position of the blank in the forging process, prevents the blank from separating from a fixed plate, ensures uniform distribution of forging pressure, and makes the size and shape of the final product meet the standard.

Description

Technical Field

[0001] The invention relates to a high alloy steel forging technology, in particular to a pressurized forging process for high alloy steel forging. Background Art

[0002] When there is an alloy element in steel that is more than 10%, it is called high alloy steel. Due to the need to use high alloy steel, the shape of the billet needs to be forged. Forging is a processing method that uses a forging machine to apply pressure to the metal billet to cause it to undergo plastic deformation in order to obtain forgings with certain mechanical properties, shapes and sizes.

[0003] A Chinese invention patent with publication number CN115365436B discloses a pressurized forging device for high alloy steel forging. The pressurized forging device for high alloy steel forging increases the forging pressure by providing power through a plurality of oil cylinders through the cooperation of an annular scraping mechanism and a forging mechanism. When the forging hammer moves in the vertical direction, the scraper rod moves with the forging hammer and approaches the forging hammer. A plurality of elastic components can adaptively fit the forging hammer. Then the scraper rod rotates to scrape off the slag of the forging hammer. Through the cooperation of an axial flow fan, a rotatable support block and an exhaust gas treatment mechanism, the slag is blown into a collection box for processing by the staff. The exhaust gas is blown into a processing box and filtered through a multi-layer activated carbon plate to reduce the impact of the exhaust gas on the health of the staff. Through the cooperation of the first annular slider, the first annular slideway, the first rotary driver and the first tension spring, the scraper rod can move with the forging hammer, approaching and moving away from the forging hammer, and the first rotary driver drives the first annular slider to rotate, thereby scraping the striking surface of the forging hammer, so as to more comprehensively remove the fallen slag. Through the cooperation of the strip collection bin, the sealing plate and the second tension spring, the scraped slag is collected to prevent it from falling onto the red-hot high-alloy steel, resulting in ineffective removal of the slag.

[0004] During the forging process of billets, existing equipment may cause uneven size and shape of the final product due to poor die design or uneven forging pressure distribution. At the same time, the noise and vibration during equipment operation may be a harbinger of failure, which may affect the production environment and equipment life. The vibration generated during equipment operation may affect production quality and equipment stability. Therefore, a pressurized forging process for high-alloy steel forging has been developed. Summary of the invention

[0005] The object of the present invention is to provide a pressurized forging process for high alloy steel forging to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a pressurized forging process for high alloy steel forging, comprising the following steps:

[0007] S1. Billet preparation: Select low-carbon high-alloy stainless steel ingots to saw the mouth and cut off the riser waste;

[0008] S2. Heating: Place the low-carbon high-alloy stainless steel ingot into a heating furnace, first heat it to 800-850°C within 5-6 hours and keep it warm for 2-3 hours, then heat it to 950°C within 3-4 hours, and finally cool it to 1160-1180°C within 1-2 hours and keep it warm for 5-8 hours;

[0009] S3, forging operation: placing the heated billet in a forging die, and then applying a pressure of 100-120 MPa;

[0010] S4, cooling treatment: wait for the high alloy steel to cool to room temperature after forging;

[0011] Among them, the operating table in S3 forges the blank, and at the same time, four support columns are evenly arranged at the upper end of the operating table, and a cover plate is arranged at the upper end of the four support columns, and a hydraulic component is arranged at the lower end of the cover plate, and the blank is forged by the hydraulic component;

[0012] An adjusting assembly, which is assembled in the inner cavity of the operating table, and is used to adjust the angle and position of the blank during forging;

[0013] The adjustment assembly includes a driving member connected to the operating table, the output end of the driving member is provided with a rotating shaft, the outer surface of the rotating shaft is provided with a spiral block, the outer surface of the rotating shaft is provided with a supporting block, and the lower end of the supporting block is connected to the inner wall of the operating table;

[0014] A fixed block is provided at the lower end of the inner cavity of the operating table and on one side of the rotating shaft, a turntable is rotatably mounted on the upper end of the fixed block, a plurality of groups of protrusions are provided at the lower end of the turntable, and the plurality of groups of protrusions are evenly distributed at the lower end of the turntable, and at the same time, the outer surface of the spiral block is slidably connected to two adjacent protrusions;

[0015] A buffer assembly is disposed at the upper end of the turntable, and a fixing plate is disposed at the upper end of the buffer assembly, and the upper end of the fixing plate penetrates and extends to the upper end of the operating table;

[0016] A fan-shaped block is provided on the outer surface of the rotating shaft, and a connecting block is provided at the lower end of the inner cavity of the operating table. A rotating rod is rotatably installed on the end of the connecting block. The outer surface of one end of the rotating rod is in contact with the outer surface of the fan-shaped block, and a driving rod is rotatably installed on the other end of the rotating rod. The upper end of the driving rod passes through and extends to the upper end of the operating table, and a protective tube is provided on the outer surface of the driving rod. The upper end of the protective tube is connected to the inner wall of the operating table, and an arc plate is provided on the upper end of the driving rod.

[0017] As a further optimization solution of the present invention, a through hole is opened in the middle position of the upper end of the operating table, and the inner wall of the through hole is slidably connected to the outer surface of the fixing plate.

[0018] As a further optimization solution of the present invention, the buffer assembly includes a base plate connected to the turntable, and a plurality of groups of positioning blocks are arranged on the upper end of the base plate, and the plurality of groups of positioning blocks are evenly distributed on the upper end of the base plate.

[0019] As a further optimization solution of the present invention, a telescopic rod is provided at a middle position of the upper end of the bottom plate, and a movable plate is slidably mounted on the outer surface of the telescopic rod.

[0020] As a further optimization solution of the present invention, a groove corresponding to the positioning block is provided at the upper end of the movable plate, and an adjustment block is rotatably mounted on the inner wall of the groove.

[0021] As a further optimization solution of the present invention, a positioning rod is rotatably mounted on the upper end of the positioning block, and the outer surface of the positioning rod is rotatably connected to the upper end of the adjustment block.

[0022] As a further optimization solution of the present invention, a pressing plate is provided at the upper end of the telescopic rod, and a guiding groove corresponding to the positioning rod is opened at the lower end of the pressing plate.

[0023] As a further optimization solution of the present invention, the inner wall of the guide groove is slidably connected to the upper end of the positioning rod.

[0024] As a further optimization solution of the present invention, an elastic member is sleeved on the outer surface of the telescopic rod, the upper end of the elastic member is connected to the lower end of the pressing plate, and the lower end of the elastic member is connected to the upper end of the movable plate.

[0025] As a further optimization solution of the present invention, a rubber ring is provided on the outer surface of the positioning rod.

[0026] Compared with the prior art, the present invention provides a pressurized forging process for high-alloy steel forging, which has the following beneficial effects: when the end of the rotating rod away from the fan-shaped block moves upward, the driving rod is synchronously driven to move upward. Since the arc plate is arranged at the upper end of the driving rod, the arc plate moves up and down, and then the arc plate adjusts the position of the billet during the forging process to prevent the billet from detaching from the fixed plate, thereby ensuring uniform forging pressure distribution and making the size and shape of the final product meet the standards.

[0027] When the pressing plate is subjected to force, it moves downward, and a movable track is provided for the upper end of the positioning rod through the guide groove. At the same time, the force is evenly distributed to multiple positioning rods, reducing damage caused by impact. When the pressing plate is subjected to force, the extruded elastic part moves downward synchronously, thereby ensuring the comfort of the production environment during processing and increasing the life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0029] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0030] Figure 2 A first cross-sectional view of the overall internal structure provided by an embodiment of the present invention;

[0031] Figure 3 A second cross-sectional view of the overall internal structure provided by an embodiment of the present invention;

[0032] Figure 4 A third cross-sectional view of the overall internal structure provided by an embodiment of the present invention;

[0033] Figure 5 A first schematic diagram of a buffer assembly structure provided by an embodiment of the present invention;

[0034] Figure 6 A second schematic diagram of a buffer assembly structure provided by an embodiment of the present invention;

[0035] Figure 7 A first cross-sectional view of the internal structure of a buffer assembly provided by an embodiment of the present invention;

[0036] Figure 8 A second cross-sectional view of the internal structure of the buffer assembly provided in an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 1. Operating table; 2. Adjustment assembly; 3. Buffer assembly; 11. Support column; 12. Cover plate; 13. Hydraulic component; 14. Through hole; 21. Driving component; 22. Rotating shaft; 23. Screw block; 24. Support block; 25. Fixed block; 26. Turntable; 261. Bump; 262. Fixed plate; 27. Fan-shaped block; 28. Connecting block; 281. Rotating rod; 29. ​​Driving rod; 291. Protective tube; 292. Arc plate; 31. Bottom plate; 32. Positioning block; 33. Telescopic rod; 331. Elastic component; 34. Movable plate; 341. Groove; 35. Adjustment block; 36. Positioning rod; 37. Rubber ring; 38. Pressing plate; 381. Guide groove. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] Example: See Figure 1-Figure 8 , a pressurized forging process for high alloy steel forging, comprising the following steps:

[0041] S1. Billet preparation: Select low-carbon high-alloy stainless steel ingots to saw the mouth and cut off the riser waste;

[0042] S2. Heating: Place the low-carbon high-alloy stainless steel ingot into a heating furnace, first heat it to 850°C within 5 hours and keep it warm for 2 hours, then heat it to 950°C within 3 hours, and finally cool it to 1180°C within 2 hours and keep it warm for 6 hours;

[0043] S3, forging operation: placing the heated billet in a forging die and then applying a pressure of 100 MPa;

[0044] S4, cooling treatment: wait for the high alloy steel to cool to room temperature after forging;

[0045] Among them, the operating table 1 in S3 forges the blank, and four support columns 11 are evenly arranged on the upper end of the operating table 1, a cover plate 12 is arranged on the upper end of the four support columns 11, and a hydraulic component 13 is arranged on the lower end of the cover plate 12, and the blank is forged through the hydraulic component 13.

[0046] In this solution, the hydraulic component 13 is a device with hydraulic functions such as a hydraulic cylinder, and is connected to an external control device, so that when the hydraulic component 13 is started, the blank is repeatedly forged, so that the blank meets the standard.

[0047] Furthermore, the adjusting assembly 2 is assembled in the inner cavity of the operating table 1, and the angle and position of the blank during forging are adjusted by the adjusting assembly 2. The adjusting assembly 2 includes a driving member 21 connected to the operating table 1, a rotating shaft 22 is provided at the output end of the driving member 21, a spiral block 23 is provided on the outer surface of the rotating shaft 22, a supporting block 24 is provided on the outer surface of the rotating shaft 22, and the lower end of the supporting block 24 is connected to the inner wall of the operating table 1.

[0048] In this embodiment, the driving member 21 is a device with power output such as a motor, and is connected to an external control device. When the driving member 21 is started, it synchronously drives the rotating shaft 22 arranged at its output end to rotate. Since the spiral block 23 is arranged on the rotating shaft 22, the spiral block 23 rotates with the rotating shaft 22, and the rotating shaft 22 is supported by the support block 24, so that the rotating shaft 22 is always in a stable state when rotating.

[0049] Furthermore, a fixed block 25 is provided at the lower end of the inner cavity of the operating table 1 and on one side of the rotating shaft 22, and a turntable 26 is rotatably installed on the upper end of the fixed block 25. A plurality of groups of protrusions 261 are provided at the lower end of the turntable 26, and the plurality of groups of protrusions 261 are evenly distributed at the lower end of the turntable 26. At the same time, the outer surface of the spiral block 23 is slidably connected to two adjacent protrusions 261.

[0050] Specifically, when the spiral block 23 rotates, the turntable 26 is synchronously driven to rotate, and the protrusion 261 at the lower end of the turntable 26 fits with the outer surface of the spiral block 23, so that the turntable 26 rotates slowly. At the same time, the turntable 26 is supported by the fixed block 25, so that the turntable 26 is stably located in the inner cavity of the operating table 1 as a whole.

[0051] Furthermore, a buffer assembly 3 is provided at the upper end of the turntable 26, and a fixing plate 262 is provided at the upper end of the buffer assembly 3, and the upper end of the fixing plate 262 penetrates and extends to the upper end of the operating table 1. A through hole 14 is provided in the middle of the upper end of the operating table 1, and the inner wall of the through hole 14 is slidably connected to the outer surface of the fixing plate 262.

[0052] Specifically, the blank is supported by the fixed plate 262, and a positioning ring is provided at the upper end of the operating table 1 to further limit the blank placed on the fixed plate 262, so that the blank is in a stable state as a whole during forging, ensuring that the pressure is evenly distributed during forging.

[0053] Furthermore, a sector block 27 is provided on the outer surface of the rotating shaft 22, and a connecting block 28 is provided at the lower end of the inner cavity of the operating table 1. A rotating rod 281 is rotatably installed on the end of the connecting block 28. The outer surface of one end of the rotating rod 281 is fitted with the outer surface of the sector block 27, and a driving rod 29 is rotatably installed on the other end of the rotating rod 281. The upper end of the driving rod 29 passes through and extends to the upper end of the operating table 1, and a protective tube 291 is sleeved on the outer surface of the driving rod 29. The upper end of the protective tube 291 is connected to the inner wall of the operating table 1, and an arc plate 292 is provided on the upper end of the driving rod 29.

[0054] Specifically, when the rotating shaft 22 rotates, the fan-shaped block 27 arranged on its outer surface is synchronously driven to rotate. Since one end of the rotating rod 281 is in contact with the outer surface of the fan-shaped block 27, when the fan-shaped block 27 rotates, the rotating rod 281 is driven to rotate around the connecting block 28, wherein a spring is arranged at one end of the rotating rod 281 close to the fan-shaped block 27, and the lower end of the spring is connected to the inner wall of the operating table 1, so that when the fan-shaped block 27 rotates to the lowest point, the rotating rod 281 is pressed tightly against the fan-shaped block 27 by the spring, and when the fan-shaped block 27 rotates to the highest point, the spring is squeezed.

[0055] When the end of the rotating rod 281 away from the sector block 27 moves upward, the driving rod 29 is synchronously driven to move upward. Since the arc plate 292 is arranged at the upper end of the driving rod 29, the arc plate 292 moves up and down. The lower end of the arc plate 292 can be provided with a motor or other power output device, and connected to an external control device, so that the arc plate 292 can adjust the position of the billet during the forging process to prevent the billet from detaching from the fixed plate 262.

[0056] Furthermore, the buffer assembly 3 includes a bottom plate 31 connected to the turntable 26, and a plurality of positioning blocks 32 are arranged at the upper end of the bottom plate 31, and the plurality of positioning blocks 32 are evenly distributed at the upper end of the bottom plate 31. A telescopic rod 33 is arranged at the middle position of the upper end of the bottom plate 31, and a movable plate 34 is slidably mounted on the outer surface of the telescopic rod 33. A groove 341 corresponding to the positioning block 32 is opened at the upper end of the movable plate 34, and an adjustment block 35 is rotatably mounted on the inner wall of the groove 341.

[0057] A positioning rod 36 is rotatably mounted on the upper end of the positioning block 32 , and an outer surface of the positioning rod 36 is rotatably connected to the upper end of the adjustment block 35 .

[0058] In this embodiment, when the positioning rod 36 is subjected to force, the positioning rod 36 rotates around the positioning block 32, and cooperates with the adjustment block 35 rotatably connected to the positioning rod 36 to drive the movable plate 34 to move upward, wherein the upward and downward movement of the movable plate 34 is limited by the telescopic rod 33, ensuring that the movable plate 34 is always in a stable state when moving.

[0059] Furthermore, a pressing plate 38 is provided at the upper end of the telescopic rod 33, and a guide groove 381 corresponding to the positioning rod 36 is provided at the lower end of the pressing plate 38. The inner wall of the guide groove 381 is slidably connected to the upper end of the positioning rod 36.

[0060] Specifically, when the pressing plate 38 is subjected to force, it moves downward, and provides a movable track for the upper end of the positioning rod 36 through the guide groove 381, while evenly distributing the force received to multiple positioning rods 36, thereby reducing damage caused by impact.

[0061] Furthermore, an elastic member 331 is sleeved on the outer surface of the telescopic rod 33, the upper end of the elastic member 331 is connected to the lower end of the pressing plate 38, and the lower end of the elastic member 331 is connected to the upper end of the movable plate 34. A rubber ring 37 is provided on the outer surface of the positioning rod 36.

[0062] Specifically, the elastic member 331 is an elastic member such as a spring, and is used to support the movable plate 34 so as to buffer the impact on the pressing plate 38 .

[0063] The telescopic rod 33 is composed of a cylinder and a round rod, the outer surface of the round rod is slidably connected to the inner wall of the cylinder, and the upper end of the round rod is connected to the pressing plate 38, and the lower end of the cylinder is connected to the bottom plate 31, so that when the pressing plate 38 is subjected to force, the extrusion elastic member 331 is synchronously moved downward, thereby ensuring the comfort of the production environment during processing and improving the life of the equipment.

[0064] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pressurized forging process for high alloy steel forging, characterized in that: The following steps are involved: S1. Billet preparation: Select low-carbon high-alloy stainless steel ingots to saw the mouth and cut off the riser waste; S2. Heating: Place the low-carbon high-alloy stainless steel ingot into a heating furnace, first heat it to 800-850°C within 5-6 hours and keep it warm for 2-3 hours, then heat it to 950°C within 3-4 hours, and finally cool it to 1160-1180°C within 1-2 hours and keep it warm for 5-8 hours; S3, forging operation: placing the heated billet in a forging die, and then applying a pressure of 100-120 MPa; S4, cooling treatment: wait for the high alloy steel to cool to room temperature after forging; In S3, the operating table (1) forges the blank, and four support columns (11) are evenly arranged at the upper end of the operating table (1), a cover plate (12) is arranged at the upper end of the four support columns (11), and a hydraulic component (13) is arranged at the lower end of the cover plate (12), and the blank is forged by the hydraulic component (13); An adjusting component (2) is mounted in the inner cavity of the operating table (1), and the angle and position of the blank during forging are adjusted by the adjusting component (2); The adjustment component (2) comprises a driving member (21) connected to the operating table (1), a rotating shaft (22) is arranged at the output end of the driving member (21), a spiral block (23) is arranged on the outer surface of the rotating shaft (22), a supporting block (24) is arranged on the outer surface of the rotating shaft (22), and the lower end of the supporting block (24) is connected to the inner wall of the operating table (1); A fixed block (25) is provided at the lower end of the inner cavity of the operating table (1) and on one side of the rotating shaft (22); a rotating disk (26) is rotatably mounted on the upper end of the fixed block (25); a plurality of groups of protrusions (261) are provided at the lower end of the rotating disk (26); and the plurality of groups of protrusions (261) are evenly distributed at the lower end of the rotating disk (26); and at the same time, the outer surface of the spiral block (23) is slidably connected to two adjacent protrusions (261); A buffer assembly (3) is provided at the upper end of the turntable (26), and a fixing plate (262) is provided at the upper end of the buffer assembly (3), and the upper end of the fixing plate (262) penetrates and extends to the upper end of the operating table (1); The outer surface of the rotating shaft (22) is provided with a sector block (27), and the lower end of the inner cavity of the operating table (1) is provided with a connecting block (28). A rotating rod (281) is rotatably mounted on the end of the connecting block (28). The outer surface of one end of the rotating rod (281) is in contact with the outer surface of the sector block (27). A driving rod (29) is rotatably mounted on the other end of the rotating rod (281). The upper end of the driving rod (29) passes through and extends to the upper end of the operating table (1). A protective tube (291) is sleeved on the outer surface of the driving rod (29). The upper end of the protective tube (291) is connected to the inner wall of the operating table (1). An arc plate (292) is provided on the upper end of the driving rod (29).

2. A pressurized forging process for high alloy steel forging according to claim 1, characterized in that: A through hole (14) is provided in the middle of the upper end of the operating table (1), and the inner wall of the through hole (14) is slidably connected to the outer surface of the fixing plate (262).

3. The pressurized forging process for high alloy steel forging according to claim 1, characterized in that: The buffer assembly (3) comprises a bottom plate (31) connected to the turntable (26), and a plurality of groups of positioning blocks (32) are arranged at the upper end of the bottom plate (31), and the plurality of groups of positioning blocks (32) are evenly distributed at the upper end of the bottom plate (31).

4. A pressurized forging process for high alloy steel forging according to claim 3, characterized in that: A telescopic rod (33) is provided at the middle position of the upper end of the bottom plate (31), and a movable plate (34) is slidably mounted on the outer surface of the telescopic rod (33).

5. A pressurized forging process for high alloy steel forging according to claim 4, characterized in that: The upper end of the movable plate (34) is provided with a groove (341) corresponding to the positioning block (32), and an adjustment block (35) is rotatably mounted on the inner wall of the groove (341).

6. A pressurized forging process for high alloy steel forging according to claim 5, characterized in that: A positioning rod (36) is rotatably mounted on the upper end of the positioning block (32), and the outer surface of the positioning rod (36) is rotatably connected to the upper end of the adjustment block (35).

7. A pressurized forging process for high alloy steel forging according to claim 6, characterized in that: A pressing plate (38) is provided at the upper end of the telescopic rod (33), and a guiding groove (381) corresponding to the positioning rod (36) is provided at the lower end of the pressing plate (38).

8. A pressurized forging process for high alloy steel forging according to claim 7, characterized in that: The inner wall of the guide groove (381) is slidably connected to the upper end of the positioning rod (36).

9. A pressurized forging process for high alloy steel forging according to claim 8, characterized in that: An elastic member (331) is sleeved on the outer surface of the telescopic rod (33), the upper end of the elastic member (331) is connected to the lower end of the pressing plate (38), and the lower end of the elastic member (331) is connected to the upper end of the movable plate (34).

10. A pressurized forging process for high alloy steel forging according to claim 9, characterized in that: The outer surface of the positioning rod (36) is provided with a rubber ring (37).

Images