Method for controlling deformation of snap-ring parts through heat treatment

A technology of heat treatment deformation and control method, applied in the direction of heat treatment process control, heat treatment furnace, heat treatment equipment, etc., can solve the problems of final size deviation and large deformation of parts

Active Publication Date: 2015-03-11
BEIJING HANGXING MACHINERY MFG CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a heat treatment deformation control method for snap ring parts, which overcomes the shortcomings of large deformation and final size deviation of the snap ring during cold processing, can effectively ensure the requirements of subsequent assembly, and the performance indicators meet the design requirements

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  • Method for controlling deformation of snap-ring parts through heat treatment

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Embodiment Construction

[0022] The best embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] The method for heat treatment deformation control of snap ring parts includes the following steps:

[0024] The first step is to determine the T6 processing parameters of the blank: heat the blank forging to 510-520°C, keep it warm for 120±10min, put it into water quickly within 15s, the water temperature is 20-30°C, and the aging temperature is 150-160°C (at 150 -160℃ aging), keep warm for 8-15h, and air cool to room temperature;

[0025] The second step, the first stabilization treatment: heat the parts after the abandoned car to 170±5°C, keep it warm for 4 hours, cool it to room temperature in air, then keep it warm at -50~-80°C for 2 hours, turn the oven vertically, and heat it at 170°C Insulate in an oven at ±5°C for 4 hours, and finally cool to room temperature with the furnace;

[0026] The third step, the second stabili...

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Abstract

The invention discloses a method for controlling deformation of snap-ring parts through heat treatment. The method comprises the following steps: (1) confirming the treatment process parameters of a blank T6; (2) carrying out first stabilizing treatment; (3) carrying out second stabilizing treatment; (4) carrying out tooling and sizing; (5) carrying out third stabilizing treatment; (6) carrying out tooling and sizing again; (7) carrying out fourth stabilizing treatment. Through adoption of the method, the defects that the deformation of snap rings during the cold-working process is high and the final sizes of parts deviate from the original design are overcome, the needs for subsequent assembly can be effectively met, and the performance indicators meet the design requirements.

Description

technical field [0001] The invention belongs to the field of heat treatment of forged aluminum alloys, and relates to a heat treatment deformation control method for snap ring parts, which is suitable for snap ring aluminum alloy parts that require high dimensional accuracy. Background technique [0002] The clasp is made of 2A50 forged aluminum alloy, and the heat treatment state is quenching and artificial aging. It is widely used in aerospace, rail transportation, weaponry and other fields. [0003] The inner circle of the common snap ring is stepped, which is formed by turning, and the thinnest part is only 6mm. Due to the uneven thickness and cutting amount of each part, large deformation will occur after processing. For such precision parts, single-pass stabilization treatment cannot meet the shape control requirements. The method of multi-pass high and low temperature cycle and high temperature and cryogenic cycle heat treatment can not only effectively reduce the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/40C21D11/00
CPCC21D9/40C21D11/00
Inventor 陈磊贺晓军闫寒刘洋
Owner BEIJING HANGXING MACHINERY MFG CO LTD
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