Forming process of inner diameter deep cavity ring type forging

Abstract

The application provides a forming process for an inner diameter deep cavity ring type forging, which comprises the following steps: ring rolling preforming, die forging preforming, ring rolling preforming, ring rolling final forging forming and the like. Through the above method, effective accumulation of metal materials in the inner diameter deep cavity is realized, and the flash of the forging and the forming defects of the forging are reduced.

Description

A forming process for a deep-cavity ring forging Technical Field

[0001] This invention relates to the field of aero-engine component forging, and in particular to a forming process for a deep-cavity ring forging. Background Technology

[0002] Forming deep-cavity ring forgings for aero-engines using traditional ring rolling processes is extremely difficult. Forging designs often employ a concept of reducing cavity depth, which, while increasing the success rate of ring rolling, inevitably increases raw material input, leading to reduced raw material utilization and increased raw material costs. Furthermore, the increased weight of the forging results in uneven metal flow, easily causing problems such as localized flash, insufficient filling, and severe tooling wear. Simultaneously, the large machining allowance further increases machining production costs. Summary of the Invention

[0003] To address the aforementioned issues, this invention proposes a forming process for deep-cavity ring forgings, which solves the problems of low material utilization and high investment costs associated with existing deep-cavity ring forgings for aero-engines.

[0004] The main content of this invention includes: a forming process for a deep-cavity ring forging, comprising the following steps:

[0005] S1. Material preparation: Cutting and chamfering according to process requirements;

[0006] S2. Punching: The billet is heated to 1050-1070℃ using a high-temperature gas furnace and held at that 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 then upset and punched with round holes. The operation is completed within 180 seconds.

[0007] S3. Ring Rolling Preforming 1: The punched ring forging is heated to 1010-1030℃ in a high-temperature gas furnace and held for 0.5-3 hours. Then, the ring forging is removed from the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The ring forging is placed in the inner diameter fixture of the ring rolling preforming 1 tooling and the ring forging is rolled into a special shape. The rolling amount needs to be controlled within 5%-20%. The operation time is completed within 120 seconds. The ring rolling feed rate is controlled within 0.6-1.3mm / s to obtain the ring rolling preforming forging 1.

[0008] S4. Die forging preforming: The ring forging that has completed ring rolling preforming one is heated to 1050-1070℃ in a high-temperature gas furnace and held for 0.5-3 hours. Then the ring forging is taken out of the high-temperature gas furnace and transferred to a 3000T press. The transfer time is controlled within 30 seconds. The ring rolling preformed forging one is placed into the preforming lower die of the die forging preforming tooling. Through the action of the guide barrel, the preforming upper die is then placed stably on top of the ring forging. The hydraulic press is used to press and forge the ring. The inner diameter metal material is gradually accumulated during the pressurization process. The operation time is completed within 180 seconds to obtain the die forging preformed forging.

[0009] S5. Ring Rolling Preforming II: The pre-formed ring forging is heated to 1010-1030℃ in a high-temperature gas furnace and held for 0.5-3 hours. Then, the ring forging is removed from the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The pre-formed ring forging is placed on the inner diameter fixture II of the ring rolling preforming II tooling. Subsequently, the outer diameter fixture is placed stably on top of the ring forging. The ring forging is then rolled into a special shape. The rolling amount needs to be controlled within 5%-20%. The operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 0.6-1.3mm / s to obtain the ring rolling preforming II.

[0010] S6. Ring Rolling Final Forging: The ring forging that has completed ring rolling pre-forming step 2 is heated to 1010-1030℃ in a high-temperature gas furnace and held for 0.5-3 hours. Then, the ring forging is removed from the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The ring rolling pre-forming step 2 is placed on the inner diameter tooling three of the ring rolling final forging tooling. Subsequently, the outer diameter tooling is placed stably on top of the ring forging, and the ring forging is rolled into a special shape. The rolling amount needs to be controlled within 5%-20%. The operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 0.6-1.3mm / s to obtain the ring rolling final forging.

[0011] S7. Heat treatment: The product shall be heat treated in accordance with the standard requirements;

[0012] S8. Testing: Sample products for testing to verify whether they meet the specifications.

[0013] S9. Inspection: Inspect the product according to the requirements of the drawings.

[0014] Preferably, the ring rolling preforming tooling includes: a cuboid inner diameter tooling, the upper surface of which is provided with a shaped groove corresponding to one side surface of the ring rolling preforming forging.

[0015] Preferably, the forging preforming fixture includes: a preforming upper die and a preforming lower die, wherein the lower end face of the preforming upper die and the upper end face of the preforming lower die are provided with forming holes for forming a ring-rolled preforming forging, and a guide barrel is provided on the outside of the preforming upper die and the preforming lower die.

[0016] Preferably, the ring rolling preforming fixture includes: an inner diameter fixture, an arc-shaped groove is excavated on the upper surface of the inner diameter fixture, an outer diameter fixture is provided above the inner diameter fixture, and a groove for accommodating the die-forged preform is provided on the lower surface of the outer diameter fixture.

[0017] Preferably, the ring rolling final forging forming fixture includes: an inner diameter fixture three, the upper surface of which is provided with a groove matching the shape of the ring rolling final forging forming forging; an outer diameter fixture is provided above the inner diameter fixture three, the lower surface of which is provided with a groove for accommodating the ring rolling pre-formed forging two, and its surface structure is adapted to the ring rolling final forging forming forging.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. The process of ring rolling preforming + die forging preforming + ring rolling preforming + ring rolling final forging of deep cavity ring forgings can effectively accumulate metal material in the deep cavity, reduce flash of forgings, and reduce forging forming defects, etc.

[0020] 2. This molding process can significantly improve the utilization rate of raw materials and reduce machining costs. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the forging process of a deep-cavity ring forging with an inner diameter.

[0022] Figure 2 shows a cross-sectional view of a ring rolling preforming tooling and a ring rolling preformed forging.

[0023] Figure 3 shows the cross-sectional view of the die forging preforming tooling and the die forging preform;

[0024] Figure 4 shows two cross-sectional views of the preformed forging produced by the ring rolling preforming fixture;

[0025] Figure 5 shows the ring rolling final forging tooling and the cross-sectional view of the ring rolling final forging forging;

[0026] Figure reference numerals: 1-Bill, 2-Ring rolled preformed forging one, 3-Die forging preformed forging, 4-Ring rolled preformed forging two, 5-Ring rolled final forging forging, 11-Inner diameter tooling one, 21-Preformed upper die, 22-Preformed lower die, 23-Guide barrel, 31-Outer diameter tooling, 32-Inner diameter tooling two, 41-Inner diameter tooling three. Detailed Implementation

[0027] The technical solution protected by this invention will be described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] A forming process for a deep-cavity ring forging includes the following steps:

[0030] S1. Material preparation: Cutting and chamfering according to process requirements;

[0031] S2, Punching: The billet is heated to 1050℃ using a high-temperature gas furnace and held at that temperature for 0.5 hours; then the billet is removed from the high-temperature gas furnace and transported to a 3000T press, with the transfer time controlled within 30 seconds. The billet is then upset and punched with round holes, with the operation time completed within 180 seconds.

[0032] S3. Ring Rolling Preforming 1: The punched ring forging is heated to 1010℃ in a high-temperature gas furnace and held for 0.5 hours. Then, the ring forging is removed from the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The ring forging is placed in the inner diameter fixture of the ring rolling preforming 1 tooling and the ring forging is rolled into a special shape. The rolling amount needs to be controlled within 5%. The operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 0.6 mm / s to obtain the ring rolling preforming forging 1.

[0033] S4. Die forging preforming: The ring forging that has completed ring rolling preforming one is heated to 1050℃ in a high-temperature gas furnace and held for 0.5 hours. Then, the ring forging is taken out of the high-temperature gas furnace and transferred to a 3000T press. The transfer time is controlled within 30 seconds. The ring rolling preformed forging one is placed into the preforming lower die of the die forging preforming tooling. Through the action of the guide barrel, the preforming upper die is then placed stably on top of the ring forging. The hydraulic press is used to press and forge the ring. The inner diameter metal material is gradually accumulated during the pressurization process. The operation time is completed within 180 seconds to obtain the die forging preformed forging.

[0034] S5. Ring Rolling Preforming II: The pre-formed ring forging is heated to 1010℃ in a high-temperature gas furnace and held for 0.5 hours. Then, the ring forging is removed from the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The pre-formed ring forging is placed on the inner diameter fixture II of the ring rolling preforming II tooling. Subsequently, the outer diameter fixture is placed stably on top of the ring forging. The ring forging is then rolled in an irregular shape. The rolling amount needs to be controlled within 5%. The operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 0.6 mm / s to obtain the ring rolling preforming II.

[0035] S6. Ring Rolling Final Forging: The ring forging that has completed ring rolling pre-forming step 2 is heated to 1010℃ in a high-temperature gas furnace and held for 0.5 hours. Then, the ring forging is taken out of the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The ring rolling pre-forming step 2 is placed on the inner diameter tooling three of the ring rolling final forging tooling. Subsequently, the outer diameter tooling is placed stably on top of the ring forging, and the ring forging is rolled into a special shape. The rolling amount needs to be controlled within 5%, and the operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 0.6mm / s to obtain the ring rolling final forging.

[0036] S7. Heat treatment: The product shall be heat treated in accordance with the standard requirements;

[0037] S8. Testing: Sample products for testing to verify whether they meet the specifications.

[0038] S9. Inspection: Inspect the product according to the requirements of the drawings.

[0039] Example 2

[0040] A forming process for a deep-cavity ring forging includes the following steps:

[0041] S1. Material preparation: Cutting and chamfering according to process requirements;

[0042] S2. Punching: The billet is heated to 1060℃ in a high-temperature gas furnace and held for 1 hour. Then the billet is taken out of the high-temperature gas furnace and transported to the 3000T press. The transfer time is controlled within 30 seconds. The billet is upset and punched with round holes. The operation time is completed within 180 seconds.

[0043] S3. Ring Rolling Preforming 1: The punched ring forging is heated to 1015℃ in a high-temperature gas furnace and held for 1 hour. Then, the ring forging is removed from the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The ring forging is placed in the inner diameter fixture of the ring rolling preforming 1 tooling and the ring forging is rolled into a special shape. The rolling amount needs to be controlled within 8%. The operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 0.8mm / s to obtain the ring rolling preforming forging 1.

[0044] S4. Pre-forming of die forging: The ring forging that has completed the ring rolling pre-forming process is heated to 1060℃ in a high-temperature gas furnace and held for 1 hour. Then, the ring forging is taken out of the high-temperature gas furnace and transferred to a 3000T press. The transfer time is controlled within 30 seconds. The ring rolling pre-formed forging is placed into the pre-forming lower die of the die forging pre-forming tooling. With the help of the guide barrel, the pre-forming upper die is then placed stably on top of the ring forging. The hydraulic press is used to press and forge the ring. The inner diameter metal material is gradually accumulated during the pressurization process. The operation time is completed within 180 seconds to obtain the die forging pre-formed forging.

[0045] S5. Ring Rolling Preforming II: The pre-formed ring forging is heated to 1020℃ in a high-temperature gas furnace and held for 1 hour. Then, the ring forging is removed from the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The pre-formed ring forging is placed on the inner diameter fixture II of the ring rolling preforming II tooling. Subsequently, the outer diameter fixture is placed stably on top of the ring forging. The ring forging is then rolled in an irregular shape. The rolling amount needs to be controlled within 8%. The operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 0.8 mm / s to obtain the ring rolling preforming II.

[0046] S6. Ring Rolling Final Forging: The ring forging that has completed ring rolling pre-forming part 2 is heated to 1020℃ in a high-temperature gas furnace and held for 1 hour. Then, the ring forging is taken out of the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The ring rolling pre-forming part 2 is placed on the inner diameter tooling part 3 of the ring rolling final forging tooling. Then, the outer diameter tooling is placed stably on top of the ring forging. The ring forging is rolled into a special shape. The rolling amount needs to be controlled within 8%. The operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 0.8mm / s to obtain the ring rolling final forging.

[0047] S7. Heat treatment: The product shall be heat treated in accordance with the standard requirements;

[0048] S8. Testing: Sample products for testing to verify whether they meet the specifications.

[0049] S9. Inspection: Inspect the product according to the requirements of the drawings.

[0050] Example 3

[0051] A forming process for a deep-cavity ring forging includes the following steps:

[0052] S1. Material preparation: Cutting and chamfering according to process requirements;

[0053] S2, Punching: The billet is heated to 1065℃ in a high-temperature gas furnace and held for 2 hours; then the billet is taken out of the high-temperature gas furnace and transported to the 3000T press. The transfer time is controlled within 30 seconds. The billet is upset and punched with round holes. The operation time is completed within 180 seconds.

[0054] S3. Ring Rolling Preforming 1: The punched ring forging is heated to 1025℃ in a high-temperature gas furnace and held for 2 hours. Then, the ring forging is removed from the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The ring forging is placed in the inner diameter fixture of the ring rolling preforming 1 tooling and the ring forging is rolled into a special shape. The rolling amount needs to be controlled within 15%. The operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 1mm / s to obtain the ring rolling preforming forging 1.

[0055] S4. Die forging preforming: The ring forging that has completed ring rolling preforming one is heated to 1060℃ in a high-temperature gas furnace and held for 2.5 hours. Then, the ring forging is taken out of the high-temperature gas furnace and transferred to a 3000T press. The transfer time is controlled within 30 seconds. The ring rolling preformed forging one is placed into the preforming lower die of the die forging preforming tooling. Through the action of the guide barrel, the preforming upper die is then placed stably on top of the ring forging. The hydraulic press is used to press and forge the ring. The inner diameter metal material is gradually accumulated during the pressurization process. The operation time is completed within 180 seconds to obtain the die forging preformed forging.

[0056] S5. Ring Rolling Preforming II: The pre-formed ring forging is heated to 1030℃ in a high-temperature gas furnace and held for 2 hours. Then, the ring forging is removed from the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The pre-formed ring forging is placed on the inner diameter fixture II of the ring rolling preforming II tooling. Subsequently, the outer diameter fixture is placed stably on top of the ring forging. The ring forging is then rolled into a special shape. The rolling amount needs to be controlled within 15%. The operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 1mm / s to obtain the ring rolling preforming II.

[0057] S6. Ring rolling final forging: The ring forging that has completed ring rolling pre-forming part two is heated to 1020℃ in a high-temperature gas furnace and held for 2 hours. Then the ring forging is taken out of the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The ring rolling pre-forming part two is placed on the inner diameter tooling three of the ring rolling final forging tooling. Then the outer diameter tooling is placed stably on top of the ring forging. The ring forging is rolled into a special shape. The rolling amount needs to be controlled within 15%. The operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 1mm / s to obtain the ring rolling final forging.

[0058] S7. Heat treatment: The product shall be heat treated in accordance with the standard requirements;

[0059] S8. Testing: Sample products for testing to verify whether they meet the specifications.

[0060] S9. Inspection: Inspect the product according to the requirements of the drawings.

[0061] Example 4

[0062] A forming process for a deep-cavity ring forging includes the following steps:

[0063] S1. Material preparation: Cutting and chamfering according to process requirements;

[0064] S2. Punching: The billet is heated to 1070℃ in a high-temperature gas furnace and held for 3 hours. Then the billet is taken out of the high-temperature gas furnace and transported to the 3000T press. The transfer time is controlled within 30 seconds. The billet is upset and punched with round holes. The operation time is completed within 180 seconds.

[0065] S3. Ring Rolling Preforming 1: The punched ring forging is heated to 1030℃ in a high-temperature gas furnace and held for 3 hours. Then, the ring forging is removed from the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The ring forging is placed in the inner diameter fixture of the ring rolling preforming 1 tooling and the ring forging is rolled into a special shape. The rolling amount needs to be controlled within 20%. The operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 1.3mm / s to obtain the ring rolling preforming forging 1.

[0066] S4. Die forging preforming: The ring forging that has completed ring rolling preforming one is heated to 1070℃ in a high-temperature gas furnace and held for 3 hours. Then, the ring forging is taken out of the high-temperature gas furnace and transferred to a 3000T press. The transfer time is controlled within 30 seconds. The ring rolling preformed forging one is placed into the preforming lower die of the die forging preforming tooling. Through the action of the guide barrel, the preforming upper die is then placed stably on top of the ring forging. The hydraulic press is used to press and forge the ring. The inner diameter metal material is gradually accumulated during the pressurization process. The operation time is completed within 180 seconds to obtain the die forging preformed forging.

[0067] S5. Ring Rolling Preforming II: The pre-formed ring forging is heated to 1030℃ in a high-temperature gas furnace and held for 3 hours. Then, the ring forging is removed from the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The pre-formed ring forging is placed on the inner diameter fixture II of the ring rolling preforming II tooling. Subsequently, the outer diameter fixture is placed stably on top of the ring forging. The ring forging is then rolled in an irregular shape. The rolling amount needs to be controlled within 20%. The operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 1.3 mm / s to obtain the ring rolling preforming II.

[0068] S6. Ring Rolling Final Forging: The ring forging that has completed ring rolling pre-forming step 2 is heated to 1030℃ in a high-temperature gas furnace and held for 3 hours. Then, the ring forging is taken out of the high-temperature gas furnace and transferred to the R350 ring rolling mill. The transfer time is controlled within 30 seconds. The ring rolling pre-forming step 2 is placed on the inner diameter tooling three of the ring rolling final forging tooling. Subsequently, the outer diameter tooling is placed stably on top of the ring forging, and the ring forging is rolled into a special shape. The rolling amount needs to be controlled within 20%, and the operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 1.3mm / s to obtain the ring rolling final forging.

[0069] S7. Heat treatment: The product shall be heat treated in accordance with the standard requirements;

[0070] S8. Testing: Sample products for testing to verify whether they meet the specifications.

[0071] S9. Inspection: Inspect the product according to the requirements of the drawings.

[0072] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A forming process for a deep-cavity ring forging, characterized in that, The process includes the following steps: S1. Blanking: Cutting and chamfering according to process requirements; S2. Punching: Heating the billet to 1050-1070℃ in a high-temperature gas furnace and holding for 0.5-3 hours; then removing the billet from the high-temperature gas furnace and transporting it to a 3000T press, with the transfer time controlled within 30 seconds, to upset and punch round holes, with the operation time completed within 180 seconds; S3. Ring rolling preforming: Heating the punched ring forging to 1010-1030℃ in a high-temperature gas furnace and holding for 0.5-3 hours, then removing the ring forging from the high-temperature gas furnace and transferring it to an R350 ring rolling mill, with the transfer time controlled within 30 seconds, to place the ring forging into the ring rolling preforming mill. Inside the inner diameter fixture of tooling type one, the ring forging is subjected to irregular rolling. The rolling amount needs to be controlled between 5% and 20%, and the operation time should be completed within 120 seconds. The ring rolling feed rate is controlled between 0.6 and 1.3 mm / s to obtain ring-rolled preformed forging one. The ring-rolled preformed forging one fixture includes a cuboid inner diameter fixture one. The upper surface of the inner diameter fixture one is provided with an irregular groove corresponding to one side surface of the ring-rolled preformed forging one. S4, Die forging preforming: The ring forging one that has been preformed by ring rolling one is heated to 1050-1070℃ in a high-temperature gas furnace and held for 0.5-3 hours. Then, the ring forging is taken out of the high-temperature gas furnace and transferred to a 3000T press. The transfer time is controlled. Within 30 seconds, the ring-rolled preformed forging is placed into the lower preformed die of the forging preformation fixture. Guided by a guide barrel, the upper preformed die is then placed stably above the ring forging. A hydraulic press is used to apply pressure and forge the forging. The inner diameter metal material gradually accumulates during the pressure process. The operation is completed within 180 seconds, resulting in the forged preformed forging. The forging preformation fixture includes an upper preformed die and a lower preformed die. The lower end face of the upper preformed die and the upper end face of the lower preformed die are provided with forming holes for the ring-rolled preformed forging. Guide barrels are provided on the outer sides of the upper and lower preformed dies. S5, Ring-rolled preformation two: A high-temperature gas furnace is used to preform the ring forging that has already undergone forging preformation. The workpiece is heated to 1010-1030℃ and held for 0.5-3 hours. Then, the ring forging is removed from the high-temperature gas furnace and transferred to the R350 ring mill. The transfer time is controlled within 30 seconds. The die-forged preform is placed on the inner diameter fixture of the ring rolling preform two tooling. Subsequently, the outer diameter fixture is placed stably on top of the ring forging, and the ring forging is rolled into a special shape. The rolling amount needs to be controlled within 5%-20%, and the operation time is completed within 120 seconds. The ring rolling feed rate is controlled at 0.6-1.3mm / s to obtain the second ring rolling preform; S6, final ring rolling forging: The ring forging that has completed the second ring rolling preform is heated to 1010-1030℃ in a high-temperature gas furnace and held for 0.5-3 hours.After 5-3 hours, the ring forging is removed from the high-temperature gas furnace and transferred to the R350 ring mill. The transfer time is controlled within 30 seconds. The ring-rolled pre-formed forging is placed on the inner diameter fixture of the ring-rolled final forging fixture. Subsequently, the outer diameter fixture is placed stably on top of the ring forging, and the ring forging is rolled into an irregular shape. The rolling amount needs to be controlled between 5% and 20%, and the operation time should be completed within 120 seconds. The ring rolling feed rate is controlled at 0.6-1.3 mm / s to obtain the ring-rolled final forging. S7. Heat treatment: The product is heat-treated according to standard requirements. S8. Testing: Samples of the product are taken for testing to verify whether they meet the specification requirements. S9. Inspection: Inspect the product according to the requirements of the drawings.

2. The forming process of a deep-cavity ring forging according to claim 1, characterized in that, The ring rolling preforming fixture includes: an inner diameter fixture, an arc-shaped groove is excavated on the upper surface of the inner diameter fixture, an outer diameter fixture is provided above the inner diameter fixture, and a groove for accommodating the die-forged preform is provided on the lower surface of the outer diameter fixture.

3. The forming process of a deep-cavity ring forging according to claim 1, characterized in that, The ring rolling final forging forming fixture includes: an inner diameter fixture three, the upper surface of which is provided with a groove matching the shape of the ring rolling final forging forming forging; an outer diameter fixture is provided above the inner diameter fixture three, the lower surface of which is provided with a groove for accommodating the ring rolling pre-formed forging two, and its surface structure is adapted to the ring rolling final forging forming forging.

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