A forming tooling assembly for a bidirectional deep cavity die forging and its forming process

Abstract

The present invention proposes a forming tooling assembly for bidirectional deep-cavity die forgings, comprising: a first tooling assembly, a second tooling assembly, a third tooling assembly, a fourth tooling assembly, a fifth tooling assembly, and a sixth tooling assembly, which are independent of each other. The present invention also discloses a forming process for bidirectional deep-cavity die forgings, comprising the following steps: S1, blanking; S2, die forging preforming (1); S3, die forging preforming (2); S4, die forging preforming (3); S5, die forging preforming (4); S6, die forging preforming (5); S7, die forging final forging; S8, heat treatment; S9, testing; and S10, inspection. This approach solves the problem of difficult forming deep-cavity die forgings, avoiding issues such as severe local flash, insufficient local filling, and increased punching pressure.

Description

Technical Field

[0001] The present invention relates to the field of alloy forgings, in particular to a forming tooling assembly for bidirectional deep cavity die forgings of aerospace engine forgings and a forming process thereof. Background Art

[0002] The design of aero-engine bidirectional deep cavity die forgings is complex, and forging is very difficult, with many forging defects. In order to ensure machining allowance, the cavity depth is minimized during forging design, thereby increasing the weight of the raw materials, resulting in low raw material utilization. At the same time, excessive metal material flows unevenly during the forming process, which can easily cause serious local flash, insufficient local filling, increased punching pressure and other problems, resulting in large amounts of forging grinding, high scrap rates and equipment overload. At the same time, excessive machining protection allowances will lead to increased machining production costs. Summary of the Invention

[0003] In order to solve the above problems, the present invention proposes a forming tooling assembly and a forming process for a bidirectional deep cavity die forging.

[0004] The main contents of the present invention include: a forming tooling assembly for a bidirectional deep cavity die forging, comprising:

[0005] A first tool, a second tool, a third tool, a fourth tool, a fifth tool and a sixth tool that are independent of each other;

[0006] The first tooling includes: a forming core 1 for forming the blank, and a forming outer barrel 1 arranged on the periphery of the forming core 1;

[0007] The second tooling includes: a forming die core 2 and an upper die 1 for forming the pre-forging 1, a forming inner barrel 1 is arranged on the periphery of the forming die core 2, a forming outer barrel 2 is arranged on the periphery of the forming inner barrel 1, and a guide barrel is arranged on the outer side of the upper die 1 above the forming outer barrel 2;

[0008] The third tooling includes: a forming die core 3 and an upper die 1 for forming the pre-forging 2, a forming inner barrel 2 is provided on the periphery of the forming die core 3, a forming outer barrel 2 is provided on the periphery of the forming inner barrel 2, and a guide barrel is provided on the outer side of the upper die 1 above the forming outer barrel 2;

[0009] The fourth tooling includes: a forming die core 3 and a punch for forming the pre-forging 3, a forming inner barrel 2 is provided on the periphery of the forming die core 3, and a forming outer barrel 2 is provided on the periphery of the forming inner barrel 2;

[0010] The fifth tooling includes: a forming core 4 and an upper die 1 for forming the pre-forging 4, a forming inner barrel 2 is provided on the periphery of the forming core 4, a forming outer barrel 2 is provided on the periphery of the forming inner barrel 2, and a guide barrel is provided on the outer side of the upper die 1 above the forming outer barrel 2;

[0011] The sixth tooling includes: a forming die core four and an upper die two for forming the pre-forging five, a forming inner barrel two is arranged on the periphery of the forming die core four, a forming outer barrel two is arranged on the periphery of the forming inner barrel two, and a guide barrel is arranged on the outer side of the upper die two above the forming outer barrel two.

[0012] The present invention also discloses a forming process for a bidirectional deep cavity die forging, comprising the following steps:

[0013] S1. Cutting: cutting and chamfering according to process requirements;

[0014] S2. Die forging preforming (1): The billet is heated to 1100-1120°C in a high-temperature gas furnace and held at this temperature for 0.5-3 hours. The billet is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. The billet is placed in the first tooling and forged under pressure using a hydraulic press. The operation is completed within 180 seconds to obtain a preforged part (1). The lower end of the preforged part has a groove, and the groove position matches the groove position of the second tooling of the die forging preforming (2) for easy positioning.

[0015] S3, Die Forging Preform 2: Preforged piece 1 is heated to 1100-1120°C in a high-temperature gas furnace and held at this temperature for 0.5-3 hours. Preforged piece 1 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 1 is placed in the second tooling. The guide barrel helps to stabilize the upper die 1. The hydraulic press applies pressure forging and forms the preforged piece. The operation is completed within 180 seconds to obtain preforged piece 2.

[0016] S4, Die Forging Preforming Part 3: Preforging Part 2 is heated to 1100-1120°C in a high-temperature gas furnace and held at this temperature for 0.5-3 hours. Preforging Part 2 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforging Part 2 is placed in the third tooling. The guide barrel helps to stabilize the upper die 1. The hydraulic press applies pressure forging and forms the part. The operation is completed within 180 seconds to obtain Preforging Part 3. Preforging Part 3 has a bidirectional cavity, which converts radial material into axial material, changes the metal material flow trend, and accumulates metal material for forming the remaining parts, thus achieving preforming of deep-cavity die forgings.

[0017] S5, Die Forging Preform 4: Use a high-temperature gas furnace to heat the preforged part 3 to 1100-1120℃ and keep it warm for 0.5-3 hours. Then, remove the preforged part 4 from the high-temperature gas furnace and transport it to a 3000T press. The transfer time is controlled within 30 seconds. The preforged part 4 is placed in the fourth tooling, the punch is placed steadily, and the hydraulic press is pressurized to forge the part. The operation time is completed within 180 seconds to obtain the preforged part 4. The fourth tooling is used to reduce the pressure in the deep cavity area and reduce large-area wear of the tooling. The cavity depth is increased during the forging process, so that the radial material is converted into axial material, and the deep cavity die forging part is preformed again.

[0018] S6. Die Forging Preform 5: Heat the preforged part 4 to 1100-1120°C in a high-temperature gas furnace and hold the temperature for 0.5-3 hours. Then, remove the preforged part 4 from the high-temperature gas furnace and transport it to a 3000T press. The transfer time is controlled within 30 seconds. Place the preforged part 4 in the fifth tooling. The guide barrel helps to stabilize the upper die 1. The hydraulic press applies pressure and forges the preforged part 5. The operation is completed within 180 seconds to obtain the preforged part 5.

[0019] S7, Final Die Forging: The fifth preforging is heated to 1100-1120°C in a high-temperature gas furnace and held at this temperature for 0.5-3 hours. The fifth preforging is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. The fifth preforging is placed in the sixth tooling. The upper die 2 is positioned steadily by the guide barrel. The hydraulic press is pressurized and forged in 180 seconds to obtain the final forging. Multiple passes of internal flanging are performed in the fifth and sixth tools to convert radial material into axial material, achieving the final forming of the deep-cavity die forging.

[0020] S8, heat treatment: heat treat the product according to standard requirements;

[0021] S9, Testing: Take samples of the product and test them to verify whether they meet the specification requirements;

[0022] S10. Inspection: Inspect the product according to the drawing requirements.

[0023] The beneficial effects of the present invention are as follows: the forming tooling group and forming process of the bidirectional deep cavity die forgings of the present invention solve the problem that deep cavity die forgings are difficult to form; multi-fire preforming is adopted to gradually and effectively distribute the metal material, avoiding the problems of severe local flash, insufficient local filling, increased punching pressure, etc.; at the same time, the utilization rate of raw materials is effectively improved and the machining production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of the first tooling;

[0025] Figure 2Schematic diagram of the structure of the second tooling;

[0026] Figure 3 Schematic diagram of the structure of the third tooling;

[0027] Figure 4 1 is a structural diagram of the fourth tooling;

[0028] Figure 5 Schematic diagram of the structure of the fifth tooling;

[0029] Figure 6 1 is a structural diagram of the sixth tooling;

[0030] Reference numerals:

[0031] 1-blank, 11-molding core 1, 12-molding outer barrel 1;

[0032] 2-pre-forging part 1, 21-forming die core 2, 22-forming inner barrel 1, 23-forming outer barrel 2, 24-guide barrel, 25-upper die 1;

[0033] 3-pre-forging part 2, 31-forming die core 3, 32-forming inner barrel 2;

[0034] 4-pre-forging part 3, 41-punch;

[0035] 5-pre-forging part four, 51-forming die core four;

[0036] 6-pre-forging 5, 61-upper die 2;

[0037] 7- Final forging. DETAILED DESCRIPTION

[0038] The technical solution protected by the present invention is described in detail below with reference to the accompanying drawings.

[0039] A forming tooling assembly for a bidirectional deep cavity die forging, comprising:

[0040] A first tool, a second tool, a third tool, a fourth tool, a fifth tool and a sixth tool that are independent of each other;

[0041] The first tooling includes: a forming core 11 for forming the blank 1, and a forming outer barrel 12 arranged on the periphery of the forming core 11;

[0042] The second tooling includes: a second forming die core 21 and an upper die 25 for forming the pre-forged piece 2; a first forming inner barrel 22 is provided on the periphery of the second forming die core 21; a second forming outer barrel 23 is provided on the periphery of the first forming inner barrel 22; and a guide barrel 24 is provided on the outer side of the upper die above the second forming outer barrel 23;

[0043] The third tooling includes: a forming core 31 and an upper die 25 for forming the pre-forged part 2; a second forming inner barrel 32 is provided on the periphery of the forming core 31; a second forming outer barrel 23 is provided on the periphery of the second forming inner barrel 32; and a guide barrel 24 is provided on the outer side of the upper die 25 above the second forming outer barrel 23;

[0044] The fourth tooling includes: a forming die core 31 and a punch 41 for forming the pre-forging 3 4 , a forming inner barrel 2 32 is provided on the periphery of the forming die core 3 31 , and a forming outer barrel 23 is provided on the periphery of the forming inner barrel 2 32 ;

[0045] The fifth tooling includes: a forming core 4 51 and an upper die 1 25 for forming the pre-forged piece 4 5; a forming inner barrel 2 32 is provided on the periphery of the forming core 4 51; a forming outer barrel 23 is provided on the periphery of the forming inner barrel 2 32; and a guide barrel 4 is provided on the outer side of the upper die 1 25 above the forming outer barrel 23;

[0046] The sixth tooling includes: a forming core four 51 and an upper die two 61 for forming the pre-forging five 6, a forming inner barrel two 32 is arranged on the periphery of the forming core four 51, a forming outer barrel two 23 is arranged on the periphery of the forming inner barrel two 32, and a guide barrel 24 is arranged on the outer side of the upper die two 61 above the forming outer barrel two 23.

[0047] Example 1

[0048] A forming process for a bidirectional deep cavity die forging comprises the following steps:

[0049] S1. Cutting: cutting and chamfering according to process requirements;

[0050] S2. Die Forging Preform 1: The billet is heated to 1100°C in a high-temperature gas furnace and held at this temperature for 0.5 hours. The billet is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. The billet is placed in the first tooling and forged with a hydraulic press. The operation is completed within 180 seconds to obtain a preforged part 1. The lower end of the preforged part has a groove. The groove position matches the groove position of the second tooling of the die forging preform 2, facilitating positioning.

[0051] S3, Die Forging Preform 2: Preforged piece 1 is heated to 1100°C in a high-temperature gas furnace and held at this temperature for 0.5 hours. Preforged piece 1 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 1 is placed in the second tooling. The guide barrel helps to stabilize the upper die 1. The hydraulic press applies pressure forging and forms the preforged piece 2. The operation is completed within 180 seconds.

[0052] S4, Die Forging Preforming Part 3: Preforging Part 2 is heated to 1100°C in a high-temperature gas furnace and held at this temperature for 0.5 hours. Preforging Part 2 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforging Part 2 is placed in the third tooling. The guide barrel helps to stabilize the upper die 1. The hydraulic press applies pressure forging and forms the part. The operation is completed within 180 seconds, resulting in Preforging Part 3. Preforging Part 3 has a bidirectional cavity, which converts radial material into axial material, changes the metal material flow trend, and accumulates metal material for forming the remaining parts, thus achieving preforming of deep-cavity die forgings.

[0053] S5, Die Forging Preform 4: Preforged piece 3 is heated to 1100°C in a high-temperature gas furnace and held at this temperature for 0.5 hours. Preforged piece 4 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 4 is placed in the fourth tooling, the punch is positioned steadily, and the hydraulic press is pressurized and forged. The operation is completed within 180 seconds to obtain preforged piece 4. The fourth tooling is used to reduce the pressure in the deep cavity area and reduce large-area wear of the tooling. The cavity depth is increased during the forging process, so that the radial material is converted into axial material, achieving the second preforming of the deep cavity die forging.

[0054] S6, Die Forging Preform 5: Preforged piece 4 is heated to 1100°C in a high-temperature gas furnace and held at this temperature for 0.5 hours. Preforged piece 4 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 4 is placed in the fifth tooling. The guide barrel helps to stabilize the upper die 1. The hydraulic press applies pressure and forges the preforged piece. The operation is completed within 180 seconds to obtain preforged piece 5.

[0055] S7, Final Die Forging: Pre-forged piece 5 is heated to 1100°C in a high-temperature gas furnace and held at this temperature for 0.5 hours. Pre-forged piece 5 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Pre-forged piece 5 is placed in the sixth tooling. The guide barrel helps to stabilize the upper die 2. The hydraulic press applies pressure forging and forms the part within 180 seconds to obtain the final forging. Multiple passes of internal flanging are performed on the fifth and sixth tools to convert radial material into axial material, achieving the final forming of the deep-cavity die forging.

[0056] S8, heat treatment: heat treat the product according to standard requirements;

[0057] S9, Testing: Take samples of the product and test them to verify whether they meet the specification requirements;

[0058] S10. Inspection: Inspect the product according to the drawing requirements.

[0059] Example 2

[0060] A forming process for a bidirectional deep cavity die forging comprises the following steps:

[0061] S1. Cutting: cutting and chamfering according to process requirements;

[0062] S2, Die Forging Preform 1: The billet is heated to 1100°C in a high-temperature gas furnace and held at this temperature for 3 hours. The billet is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. The billet is placed in the first tooling and forged with a hydraulic press. The operation is completed within 180 seconds to obtain a preforged part 1. The lower end of the preforged part has a groove. The groove is designed to match the groove position of the second tooling of the die forging preform 2, facilitating positioning.

[0063] S3, Die Forging Preform 2: Preforged piece 1 is heated to 1100°C in a high-temperature gas furnace and held at this temperature for 3 hours. Preforged piece 1 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 1 is placed in the second tooling. The guide barrel helps to stabilize the upper die 1. The hydraulic press applies pressure forging and forms the preforged piece 2. The operation is completed within 180 seconds.

[0064] S4, Die Forging Preforming Part 3: Preforging Part 2 is heated to 1100°C in a high-temperature gas furnace and held at this temperature for 3 hours. Preforging Part 2 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforging Part 2 is placed in the third tooling. The guide barrel helps to stabilize the upper die 1, and the hydraulic press applies pressure forging to form the part. The operation is completed within 180 seconds, resulting in Preforging Part 3. Preforging Part 3 has a bidirectional cavity, which converts radial material into axial material, changes the metal material flow trend, and accumulates metal material for forming the remaining parts, thus achieving preforming of deep-cavity die forgings.

[0065] S5, Die Forging Preform 4: Preforged piece 3 is heated to 1100°C in a high-temperature gas furnace and held at this temperature for 3 hours. Preforged piece 4 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 4 is placed in the fourth tooling, the punch is positioned steadily, and the hydraulic press applies pressure to forge the piece. The operation is completed within 180 seconds, resulting in preforged piece 4. The fourth tooling reduces pressure in the deep cavity and minimizes wear on the tooling. During the forging process, the cavity depth is increased, converting radial material into axial material, achieving the second preforming of the deep-cavity die forging.

[0066] S6, Die Forging Preform 5: Preforged piece 4 is heated to 1100°C in a high-temperature gas furnace and held at this temperature for 3 hours. Preforged piece 4 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 4 is placed in the fifth tooling. The guide barrel helps to stabilize the upper die 1, and the hydraulic press applies pressure forging to form the preforged piece. The operation is completed within 180 seconds, resulting in preforged piece 5.

[0067] S7, Final Die Forging: Pre-forged piece 5 is heated to 1100°C in a high-temperature gas furnace and held at this temperature for 3 hours. Pre-forged piece 5 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Pre-forged piece 5 is placed in the sixth tooling. The guide barrel helps to stabilize the upper die 2. The hydraulic press applies pressure forging and forms the pre-forged piece within 180 seconds to obtain the final forging. Multiple passes of internal flanging are performed on the fifth and sixth tools to convert radial material into axial material, achieving the final forming of the deep-cavity die forging.

[0068] S8, heat treatment: heat treat the product according to standard requirements;

[0069] S9, Testing: Take samples of the product and test them to verify whether they meet the specification requirements;

[0070] S10. Inspection: Inspect the product according to the drawing requirements.

[0071] Example 3

[0072] A forming process for a bidirectional deep cavity die forging comprises the following steps:

[0073] S1. Cutting: cutting and chamfering according to process requirements;

[0074] S2. Die Forging Preform 1: The billet is heated to 1120°C in a high-temperature gas furnace and held at this temperature for 0.5 hours. The billet is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. The billet is placed in the first tooling and forged with a hydraulic press. The operation is completed within 180 seconds to obtain a preforged part 1. The lower end of the preforged part has a groove. The groove position matches the groove position of the second tooling of the die forging preform 2, facilitating positioning.

[0075] S3, Die Forging Preform 2: Preforged piece 1 is heated to 1120°C in a high-temperature gas furnace and held at this temperature for 0.5 hours. Preforged piece 1 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 1 is placed in the second tooling. The guide barrel stabilizes the upper die 1 and the hydraulic press applies pressure forging to form the preforged piece 2. The operation is completed within 180 seconds to obtain preforged piece 2.

[0076] S4, Die Forging Preforming Part 3: Preforging Part 2 is heated to 1120°C in a high-temperature gas furnace and held at this temperature for 0.5 hours. Preforging Part 2 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforging Part 2 is placed in the third tooling. The guide barrel helps to stabilize the upper die 1. The hydraulic press applies pressure forging and forms the part within 180 seconds. This results in Preforging Part 3, which has a bidirectional cavity. This converts radial material into axial material, changes the metal material flow direction, and accumulates metal material for forming the remaining parts, achieving preforming of deep-cavity die forgings.

[0077] S5, Die Forging Preform 4: Preforged piece 3 is heated to 1120°C in a high-temperature gas furnace and held at this temperature for 0.5 hours. Preforged piece 4 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 4 is placed in the fourth tooling, the punch is positioned steadily, and the hydraulic press is pressurized and forged. The operation is completed within 180 seconds to obtain preforged piece 4. The fourth tooling is used to reduce the pressure in the deep cavity area and minimize large-area wear of the tooling. The cavity depth is increased during the forging process, converting radial material into axial material, achieving the second preforming of the deep-cavity die forging.

[0078] S6. Die Forging Preform 5: Preforged piece 4 is heated to 1120°C in a high-temperature gas furnace and held at this temperature for 0.5 hours. Preforged piece 4 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 4 is placed in the fifth tooling. The guide barrel helps to stabilize the upper die 1. The hydraulic press applies pressure forging and forms the preforged piece. The operation is completed within 180 seconds to obtain preforged piece 5.

[0079] S7, Final Die Forging: Pre-forged piece 5 is heated to 1120°C in a high-temperature gas furnace and held at this temperature for 0.5 hours. Pre-forged piece 5 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Pre-forged piece 5 is placed in the sixth tooling. The guide barrel helps to stabilize the upper die 2. The hydraulic press applies pressure forging and forms the part within 180 seconds to obtain the final forging. Multiple passes of internal flanging are performed on the fifth and sixth tools to convert radial material into axial material, achieving the final forming of the deep-cavity die forging.

[0080] S8, heat treatment: heat treat the product according to standard requirements;

[0081] S9, Testing: Take samples of the product and test them to verify whether they meet the specification requirements;

[0082] S10. Inspection: Inspect the product according to the drawing requirements.

[0083] Example 4

[0084] A forming process for a bidirectional deep cavity die forging comprises the following steps:

[0085] S1. Cutting: cutting and chamfering according to process requirements;

[0086] S2. Die Forging Preform 1: The billet is heated to 1120°C in a high-temperature gas furnace and held at this temperature for 3 hours. The billet is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. The billet is placed in the first tooling and forged with a hydraulic press. The operation is completed within 180 seconds to obtain a preforged part 1. The lower end of the preforged part has a groove. The groove is designed to match the groove position of the second tooling of the die forging preform 2, facilitating positioning.

[0087] S3, Die Forging Preform 2: Preforged piece 1 is heated to 1120°C in a high-temperature gas furnace and held at this temperature for 3 hours. Preforged piece 1 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 1 is placed in the second tooling. The guide barrel helps to stabilize the upper die 1. The hydraulic press applies pressure forging and forms the preforged piece 2. The operation is completed within 180 seconds.

[0088] S4, Die Forging Preforming Part 3: Preforging Part 2 is heated to 1120°C in a high-temperature gas furnace and held at this temperature for 3 hours. Preforging Part 2 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforging Part 2 is placed in the third tooling. The guide barrel stabilizes the upper die 1 and the hydraulic press applies pressure forging to form the part. The operation is completed within 180 seconds, resulting in Preforging Part 3. Preforging Part 3 has a bidirectional cavity, which converts radial material into axial material, changes the metal material flow trend, and accumulates metal material for forming the remaining parts, achieving preforming of deep-cavity die forgings.

[0089] S5, Die Forging Preform 4: Preforged piece 3 is heated to 1120°C in a high-temperature gas furnace and held at this temperature for 3 hours. Preforged piece 4 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 4 is placed in the fourth tooling, the punch is positioned steadily, and the hydraulic press applies pressure and forging. The operation is completed within 180 seconds to obtain preforged piece 4. The fourth tooling reduces the pressure in the deep cavity and reduces large-area wear of the tooling. During the forging process, the cavity depth is increased, and radial material is converted into axial material, achieving the second preforming of the deep-cavity die forging.

[0090] S6, Die Forging Preform 5: Preforged piece 4 is heated to 1120°C in a high-temperature gas furnace and held at this temperature for 3 hours. Preforged piece 4 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 4 is placed in the fifth tooling. The guide barrel helps to stabilize the upper die 1, and the hydraulic press applies pressure forging to form the preforged piece. The operation is completed within 180 seconds, resulting in preforged piece 5.

[0091] S7, Final Die Forging: Pre-forged piece 5 is heated to 1120°C in a high-temperature gas furnace and held at this temperature for 3 hours. Pre-forged piece 5 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Pre-forged piece 5 is placed in the sixth tooling. The guide barrel helps to stabilize the upper die 2. The hydraulic press applies pressure forging and forms the part within 180 seconds to obtain the final forging. Multiple passes of internal flanging are performed in the fifth and sixth tools to convert radial material into axial material, achieving the final forming of the deep-cavity die forging.

[0092] S8, heat treatment: heat treat the product according to standard requirements;

[0093] S9, Testing: Take samples of the product and test them to verify whether they meet the specification requirements;

[0094] S10. Inspection: Inspect the product according to the drawing requirements.

[0095] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A forming tooling assembly for a bidirectional deep cavity die forging, characterized in that: include: A first tool, a second tool, a third tool, a fourth tool, a fifth tool and a sixth tool that are independent of each other; The first tooling is used to obtain a pre-forging, comprising: a forming die core for forming a blank, and a forming outer barrel disposed on the periphery of the forming die core; The second tooling is used to obtain the second pre-forging, comprising: a second forming die core and a first upper die for forming the first pre-forging, a first forming inner barrel being provided on the periphery of the second forming die core, a second forming outer barrel being provided on the periphery of the first forming inner barrel, and a guide barrel being provided on the outer side of the first upper die above the second forming outer barrel; The third tooling is used to obtain a third pre-forging, comprising: a third forming die core for forming the second pre-forging and an upper die; a second forming inner barrel is disposed on the periphery of the third forming die core, a second forming outer barrel is disposed on the periphery of the second forming inner barrel, and a guide barrel is disposed on the outer side of the upper die above the second forming outer barrel; The fourth tool is used to obtain a fourth pre-forging, comprising: a third forming die core and a punch for forming the third pre-forging, a second forming inner barrel being provided on the periphery of the third forming die core, and a second forming outer barrel being provided on the periphery of the second forming inner barrel; The fifth tooling is used to obtain a pre-forged part 5, comprising: a forming core 4 and an upper die 1 for forming the pre-forged part 4, a forming inner barrel 2 being provided on the periphery of the forming core 4, a forming outer barrel 2 being provided on the periphery of the forming inner barrel 2, and a guide barrel being provided on the outer side of the upper die 1 above the forming outer barrel 2; The sixth tooling is used to obtain the final forging, including: a forming die core four and an upper die two for forming the pre-forging five, a forming inner barrel two is arranged on the periphery of the forming die core four, a forming outer barrel two is arranged on the periphery of the forming inner barrel two, and a guide barrel is arranged on the outer side of the upper die two above the forming outer barrel two.

2. A forming process using the forming tooling set for bidirectional deep cavity die forgings according to claim 1, characterized in that: The steps include: S1. Cutting: cutting and chamfering according to process requirements; S2. Die forging preforming 1: The billet is heated to 1100-1120°C in a high-temperature gas furnace and kept at this temperature for 0.5-3 hours. The billet is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. The billet is placed in the first tooling and pressurized forging is completed within 180 seconds to obtain preforged part 1. S3, Die Forging Preform 2: Preforged piece 1 is heated to 1100-1120°C in a high-temperature gas furnace and held at this temperature for 0.5-3 hours. Preforged piece 1 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforged piece 1 is placed in the second tooling. The guide barrel helps to stabilize the upper die 1. The press is pressurized and forged. The operation is completed within 180 seconds to obtain preforged piece 2. S4, Die Forging Preforming Part 3: Preforging Part 2 is heated to 1100-1120°C in a high-temperature gas furnace and held at this temperature for 0.5-3 hours. Preforging Part 2 is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. Preforging Part 2 is placed in the third tooling. The guide barrel helps to stabilize the upper die 1. The press is then pressurized and forged. The operation is completed within 180 seconds to obtain Preforging Part 3. S5. Die forging preform 4: Heat preforging 3 to 1100-1120°C in a high-temperature gas furnace and hold the temperature for 0.5-3 hours. Then, remove preforging 3 from the high-temperature gas furnace and transport it to a 3000T press. The transfer time is controlled within 30 seconds. Place preforging 3 in the fourth tooling, place the punch steadily, and press forge the preforging. The operation is completed within 180 seconds to obtain preforging 4. S6. Die Forging Preform 5: Heat the preforged piece 4 to 1100-1120°C in a high-temperature gas furnace and hold the temperature for 0.5-3 hours. Then, remove the preforged piece 4 from the high-temperature gas furnace and transport it to a 3000T press. The transfer time is controlled within 30 seconds. Place the preforged piece 4 in the fifth tooling. The guide barrel helps to stabilize the upper die 1. The press is pressurized and forged. The operation is completed within 180 seconds to obtain the preforged piece 5. S7, Final Die Forging: The fifth pre-forging is heated to 1100-1120°C in a high-temperature gas furnace and held at this temperature for 0.5-3 hours. The fifth pre-forging is then removed from the high-temperature gas furnace and transported to a 3000T press. The transfer time is controlled within 30 seconds. The fifth pre-forging is placed in the sixth tooling. The upper die 2 is positioned steadily by the guide barrel. The press is pressurized and forged. The operation is completed within 180 seconds to obtain the final forging. S8, heat treatment: heat treat the product according to standard requirements; S9, Testing: Take samples of the product and test them to verify whether they meet the specification requirements; S10. Inspection: Inspect the product according to the drawing requirements.

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