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Process for increasing impact value of A286 aviation forged piece

A technology of impact value and forging, which is applied in the technological field of improving the impact value of A286 aviation forgings, and can solve the problems of performance impact, small forging deformation, and limited space for performance improvement.

Active Publication Date: 2021-01-12
豪梅特航空机件(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A286 alloy is a material widely used in aviation parts, the test is prone to coarse grains, and the impact value is easy to fail
The existing forging technology has the following shortcomings: 1. Due to the small size of the parts, the forging deformation of the forging is not large, and the performance improvement space is limited; 2. The existing forging temperature is relatively high, and coarse grains are prone to occur, and the impact value Lower, lowering the forging temperature can increase the grain size, but the impact value will be lower, so choosing a suitable forging temperature has a great impact on performance; 3. The current heat treatment process is fixed by standard, and the performance can be improved by improving the heat treatment process It is necessary to ask the customer to change the standard requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A process for improving the impact value of A286 aviation forgings, comprising the following steps:

[0022] S1, blanking;

[0023] S2. Pressure height: use a high-temperature gas furnace to heat the billet to 980°C, keep it warm for 1 hour, then take the billet out of the high-temperature gas furnace and transfer it to a 3000T press, and upsetting the billet within 180 seconds Finish;

[0024] S3. Boring: boring to 52mm on the machine tool, while ensuring the coaxiality of 1mm;

[0025] S4. Rolling step: use a high-temperature gas furnace to heat the blank after punching to 980°C, keep it warm for 0.5 hours, then take out the ring forging from the high-temperature gas furnace and transfer it to the R80 ring rolling mill, and ring-roll to the required size;

[0026] S5. Solution heat treatment: heat the forging to 960°C in a gas-fired side lift furnace and keep it warm for 1 hour. After the heat preservation is over, use a rotary forklift to transfer the parts to the ...

Embodiment 2

[0029] A process for improving the impact value of A286 aviation forgings, comprising the following steps:

[0030] S1, blanking;

[0031] S2. Pressure height: use a high-temperature gas furnace to heat the billet to 1020°C, keep it warm for 1 hour, then take the billet out of the high-temperature gas furnace and transfer it to a 3000T press, and upsetting the billet within 180 seconds Finish;

[0032] S3. Boring: boring to 52mm on the machine tool, while ensuring the coaxiality of 1mm;

[0033] S4. Rolling step: use a high-temperature gas furnace to heat the blank after punching to 1020°C, keep it warm for 0.5 hours, then take out the ring forging from the high-temperature gas furnace and transfer it to the R80 ring rolling mill, and ring-roll to the required size;

[0034] S5. Solution heat treatment: heat the forging to 1000°C in a gas-fired side lift furnace and keep it warm for 1 hour. After the heat preservation is over, use a rotary forklift to transfer the parts to t...

Embodiment 3

[0037] A process for improving the impact value of A286 aviation forgings, comprising the following steps:

[0038] S1, blanking;

[0039] S2. Pressure height: use a high-temperature gas furnace to heat the billet to 980°C, keep it warm for 2 hours, then take the billet out of the high-temperature gas furnace and transfer it to a 3000T press, and upsetting the billet within 180 seconds Finish;

[0040] S3. Boring: boring to 52mm on the machine tool, while ensuring the coaxiality of 1mm;

[0041] S4. Rolling step: use a high-temperature gas furnace to heat the blank after punching to 980°C, keep it warm for 1.5 hours, then take out the ring forging from the high-temperature gas furnace and transfer it to the R80 ring rolling mill, and ring-roll to the required size;

[0042] S5. Solution heat treatment: heat the forging to 960°C in a gas-fired side lift furnace and keep it warm for 1 hour. After the heat preservation is over, use a rotary forklift to transfer the parts to the...

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PUM

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Abstract

The invention provides a process for increasing an impact value of an A286 aviation forge piece. The process comprises following steps: blanking; high-temperature pressing: heating a blank to 996 DEGC, conducting heat preservation for one hour, and then taking the blank out of a furnace and transferring the blank to a pressing machine; boring: performing boring on a machine tool, and ensuring thecoaxiality to be 1mm; rolling: heating the punched blank to 996 DEG C, conducting heat preservation for 0.5 hour, then taking a ring forged piece out of the furnace and transferring the forged pieceto a ring rolling mill, and conducting ring rolling to reach a required size; solution heat treatment: heating the forged piece to 980 DEG C, conducting heat preservation for 1 hour, transferring a part to a material frame after heat preservation is finished, and performing air-cooling to a room temperature; and S6, aging heat treatment: preheating the part at 550 DEG C, then heating the part to 700 DEG C, conducting heat preservation for 1 hour, heating the part to 725 DEG C and conducting heat preservation for 16 hours, transferring the part out of the preheating furnace after heat preservation is completed, and performing air cooling to the room temperature. According to the process, fine grains are obtained through a complete forging technological process and a heat treatment process,and the impact performance of the forged piece is enhanced.

Description

technical field [0001] The invention relates to the field of aviation machine parts manufacturing, in particular to a process for increasing the impact value of an A286 aviation forging. Background technique [0002] A286 alloy is a material widely used in aerospace parts, and it is prone to coarse grains in the test, and the impact value is easy to fail. The existing forging technology has the following shortcomings: 1. Due to the small size of the parts, the forging deformation of the forging is not large, and the performance improvement space is limited; 2. The existing forging temperature is relatively high, and coarse grains are prone to occur, and the impact value Lower, lowering the forging temperature can increase the grain size, but the impact value will be lower, so choosing a suitable forging temperature has a great impact on performance; 3. The current heat treatment process is fixed by standard, and the performance can be improved by improving the heat treatment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D8/00
CPCC21D8/005Y02P10/20
Inventor 杨超黄震刘小刚宋利冰王星阳
Owner 豪梅特航空机件(苏州)有限公司