CN111659846A - Forging method for homogenizing GH141 special-shaped ring forging grains - Google Patents
Forging method for homogenizing GH141 special-shaped ring forging grains Download PDFInfo
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- CN111659846A CN111659846A CN202010533646.1A CN202010533646A CN111659846A CN 111659846 A CN111659846 A CN 111659846A CN 202010533646 A CN202010533646 A CN 202010533646A CN 111659846 A CN111659846 A CN 111659846A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/761—Making machine elements elements not mentioned in one of the preceding groups rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
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Abstract
The invention discloses a forging method for homogenizing GH141 special-shaped ring forging grains, which belongs to the technical field of forging processes, and the technical scheme is characterized by comprising the following steps: s1, heating: heating the GH141 alloy bar to 1100 ℃, and preserving heat after heating; s2, upsetting and punching: firstly, upsetting a GH141 alloy bar, and then punching a hole in the GH141 alloy bar to obtain a forging stock; s3, secondary heating: heating the forging stock to 1080 ℃, and then preserving heat; s4, trestle reaming: carrying out trestle reaming on the forging stock; s5, heating for three times: heating the forging stock to 1080 ℃, and then preserving heat; s6, forging: putting the forging stock into a using mould (2), and then pressing down by using a forming punch (1) to forge and form the forging stock; s7, cooling: the method has the advantage of improving the grain homogenization degree of the GH141 special-shaped ring forging.
Description
Technical Field
The invention relates to the technical field of forging processes, in particular to a forging method for homogenizing GH141 special-shaped ring forging grains.
Background
The GH141 alloy is a precipitation hardening type nickel-based wrought superalloy, and has high tensile and creep strength and good oxidation resistance within the temperature range of 650-950 ℃. The GH141 alloy has excellent mechanical properties, so that the GH141 alloy is widely regarded and widely applied to the field of aerospace. An aircraft engine is a highly complex and precise thermal machine, and every important change in human aviation history is inseparable from the technical progress of the aircraft engine. Currently used aircraft engines include various types such as turbojet/turbofan engines, turboshaft/turboprop engines, ramjet engines, piston engines, and the like, and no matter which type of aircraft engine is used, the requirements on material properties are more severe due to the severe working environment of the aircraft engine.
The problem of GH141 cracking in the forging process is serious at present, and the cracking is caused by the problems that the grain size range is large and the grain size cannot meet the relevant acceptance standard requirements due to large grain size under the condition that local deformation of a GH141 alloy forging, particularly a special-shaped forging, is not uniform in the forging process.
Disclosure of Invention
The invention aims to provide a forging method for homogenizing GH141 special-shaped ring forging crystal grains, which has the advantages of improving the homogenization degree of the GH141 special-shaped ring forging crystal grains and improving the mixed crystal defect of the conventional GH141 alloy special-shaped forging.
The technical purpose of the invention is realized by the following technical scheme: a forging method for homogenizing crystal grains of a GH141 special-shaped ring forging comprises the following steps:
s1, heating: heating the GH141 alloy bar to 1100 ℃, and preserving heat after heating;
s2, upsetting and punching: firstly, upsetting a GH141 alloy bar, and then punching a hole in the GH141 alloy bar to obtain a forging stock;
s3, secondary heating: heating the forging stock to 1080 ℃, and then preserving heat;
s4, trestle reaming: carrying out trestle reaming on the forging stock;
s5, heating for three times: heating the forging stock to 1080 ℃, and then preserving heat;
s6, forging: putting the forging stock into a using mould (2), and then pressing down by using a forming punch (1) to forge and form the forging stock;
s7, cooling: and air cooling.
Further, in step S1, the heat retention time is 160 min.
Further, in step S2, the size of the forging stock is phi 315mm + -5 mm × 175mm + -5 mm, and the inner bore diameter of the forging stock is 140mm + -5 mm.
Further, in step S3, the heat retention time was 105 min.
Further, in step S4, the dimensions of the forged blank horse after broaching are 335mm + -5 mm + -220 mm + -5 mm + -175 mm + -5 mm.
Further, in step S5, the heat retention time was 105 min.
In conclusion, the invention has the following beneficial effects:
1. deformation is reasonably distributed through the forging stock, the heat treatment temperature is optimized, the mixed crystal defect of the conventional GH141 alloy special-shaped forging is improved, the utilization rate of raw materials is improved, and the production period is shortened;
2. the purpose of improving the integral grain uniformity of the forge piece is achieved by designing a special die in the early blank making control and the subsequent forming process to ensure uniform deformation.
Drawings
FIG. 1 is a step schematic diagram of a forging method for homogenizing GH141 special-shaped ring forging grains;
FIG. 2 is a schematic structural view of a GH141 alloy bar;
fig. 3 is a schematic structural view of a GH141 alloy bar in step S2;
fig. 4 is a schematic structural view of a GH141 alloy bar in step S4;
fig. 5 is a schematic view of the molding process of step S6;
FIG. 6 is a schematic structural view of the forged piece formed in step S7.
In the figure, 1, a forming punch; 2. and (4) a fetal membrane.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): a forging method for homogenizing GH141 special-shaped ring forging grains is disclosed as shown in FIG. 1, and comprises the following steps:
s1, heating: preparing a GH141 alloy bar as shown in figure 2, wherein the size of the GH141 alloy bar is phi 200mm +2mm multiplied by 424mm +5mm, heating the GH141 alloy bar to 1100 ℃, and then preserving heat for 160min after heating.
S2, upsetting and punching: firstly, a GH141 alloy bar is upset, then a GH141 alloy bar is punched to obtain a forging stock (shown in figure 3), the size of the forging stock is phi 315mm +/-5 mm multiplied by 175mm +/-5 mm, and the inner hole diameter of the forging stock is 140mm +/-5 mm.
S3, secondary heating: heating the forging stock to 1080 ℃, and then preserving the heat for 105 min.
S4, trestle reaming: and (3) carrying out trestle reaming on the forging stock (as shown in figure 4), wherein the size of the forging stock after trestle reaming is phi 335mm +/-5 mm multiplied by phi 220mm +/-5 mm multiplied by 175mm +/-5 mm.
S5, heating for three times: heating the forging stock to 1080 ℃, and then preserving the heat for 105 min.
S6, forging: as shown in fig. 5, a forging blank is put into a use tire case 2, and then the forging blank is forged and formed by being pressed down by a forming punch 1.
S7, cooling: and (4) air-cooling the forging, and finally obtaining the forging (shown in figure 6).
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (6)
1. A forging method for homogenizing crystal grains of a GH141 special-shaped ring forging is characterized by comprising the following steps:
s1, heating: heating the GH141 alloy bar to 1100 ℃, and preserving heat after heating;
s2, upsetting and punching: firstly, upsetting a GH141 alloy bar, and then punching a hole in the GH141 alloy bar to obtain a forging stock;
s3, secondary heating: heating the forging stock to 1080 ℃, and then preserving heat;
s4, trestle reaming: carrying out trestle reaming on the forging stock;
s5, heating for three times: heating the forging stock to 1080 ℃, and then preserving heat;
s6, forging: putting the forging stock into a using mould (2), and then pressing down by using a forming punch (1) to forge and form the forging stock;
s7, cooling: and air cooling.
2. The forging method for grain homogenization of the GH141 special-shaped ring forging according to claim 1, characterized by comprising the following steps: in step S1, the heat retention time is 160 min.
3. The forging method for grain homogenization of the GH141 special-shaped ring forging according to claim 1, characterized by comprising the following steps: in step S2, the size of the forging stock is phi 315mm +/-5 mm multiplied by 175mm +/-5 mm, and the inner bore diameter of the forging stock is 140mm +/-5 mm.
4. The forging method for grain homogenization of the GH141 special-shaped ring forging according to claim 1, characterized by comprising the following steps: in step S3, the heat retention time was 105 min.
5. The forging method for grain homogenization of the GH141 special-shaped ring forging according to claim 1, characterized by comprising the following steps: in step S4, the dimensions of the forged blank horse after broaching are phi 335mm + -5 mm + -220 mm + -5 mm + -175 mm + -5 mm.
6. The forging method for grain homogenization of the GH141 special-shaped ring forging according to claim 1, characterized by comprising the following steps: in step S5, the heat retention time was 105 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010533646.1A CN111659846A (en) | 2020-06-12 | 2020-06-12 | Forging method for homogenizing GH141 special-shaped ring forging grains |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010533646.1A CN111659846A (en) | 2020-06-12 | 2020-06-12 | Forging method for homogenizing GH141 special-shaped ring forging grains |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114378234A (en) * | 2021-09-07 | 2022-04-22 | 江西宝顺昌特种合金制造有限公司 | NS3303 corrosion-resistant alloy and forging method thereof |
| CN116900649A (en) * | 2023-09-11 | 2023-10-20 | 陕西长羽航空装备股份有限公司 | Ring piece forming method of aero-engine difficult-to-deform material |
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| CN104384826A (en) * | 2014-08-18 | 2015-03-04 | 贵州航宇科技发展股份有限公司 | Forging method of GH4169 alloy inner cartridge receiver special-shaped ring part |
| CN106552895A (en) * | 2016-12-01 | 2017-04-05 | 贵州安大航空锻造有限责任公司 | The enclosed hole-punching method of the high cylinder ring of GH141 alloys |
| CN109482799A (en) * | 2018-12-13 | 2019-03-19 | 贵州航宇科技发展股份有限公司 | A kind of manufacturing method with flange GH4169 casing forging |
| CN109702434A (en) * | 2018-12-13 | 2019-05-03 | 贵州航宇科技发展股份有限公司 | A kind of manufacturing method with flange GH4169 low-pressure turbine casing forging |
| CN109967667A (en) * | 2019-04-15 | 2019-07-05 | 无锡派克新材料科技股份有限公司 | A kind of raising GH141 alloy rings grain size homogenization method |
| CN110976746A (en) * | 2019-12-19 | 2020-04-10 | 陕西宏远航空锻造有限责任公司 | GH141 alloy forging forming method |
| CN111112526A (en) * | 2019-12-09 | 2020-05-08 | 贵州航宇科技发展股份有限公司 | Manufacturing method of IN718 alloy axial asymmetric multi-flange casing ring piece |
| CN111250639A (en) * | 2020-02-27 | 2020-06-09 | 无锡派克新材料科技股份有限公司 | Blank forming method for GH4169 large-sized special-shaped ring forging |
-
2020
- 2020-06-12 CN CN202010533646.1A patent/CN111659846A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384826A (en) * | 2014-08-18 | 2015-03-04 | 贵州航宇科技发展股份有限公司 | Forging method of GH4169 alloy inner cartridge receiver special-shaped ring part |
| CN106552895A (en) * | 2016-12-01 | 2017-04-05 | 贵州安大航空锻造有限责任公司 | The enclosed hole-punching method of the high cylinder ring of GH141 alloys |
| CN109482799A (en) * | 2018-12-13 | 2019-03-19 | 贵州航宇科技发展股份有限公司 | A kind of manufacturing method with flange GH4169 casing forging |
| CN109702434A (en) * | 2018-12-13 | 2019-05-03 | 贵州航宇科技发展股份有限公司 | A kind of manufacturing method with flange GH4169 low-pressure turbine casing forging |
| CN109967667A (en) * | 2019-04-15 | 2019-07-05 | 无锡派克新材料科技股份有限公司 | A kind of raising GH141 alloy rings grain size homogenization method |
| CN111112526A (en) * | 2019-12-09 | 2020-05-08 | 贵州航宇科技发展股份有限公司 | Manufacturing method of IN718 alloy axial asymmetric multi-flange casing ring piece |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114378234A (en) * | 2021-09-07 | 2022-04-22 | 江西宝顺昌特种合金制造有限公司 | NS3303 corrosion-resistant alloy and forging method thereof |
| CN114378234B (en) * | 2021-09-07 | 2023-11-03 | 江西宝顺昌特种合金制造有限公司 | NS3303 corrosion-resistant alloy and forging method thereof |
| CN116900649A (en) * | 2023-09-11 | 2023-10-20 | 陕西长羽航空装备股份有限公司 | Ring piece forming method of aero-engine difficult-to-deform material |
| CN116900649B (en) * | 2023-09-11 | 2023-11-21 | 陕西长羽航空装备股份有限公司 | Ring piece forming method of aero-engine difficult-to-deform material |
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Application publication date: 20200915 |
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