Heat treatment setting method for high-strength elastic material coil spring

An elastic material and high-strength technology, applied in heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve problems such as deformation gaps and unevenness, achieve deformation stress release, uniform distribution, and ensure dimensional stability.

Inactive Publication Date: 2016-02-03
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-strength elastic material coil spring heat treatment and shaping method, through the use of heat treatment and shaping to solve the deformation and uneven gap problems of the coil spring after forming, to ensure that the gap size between the inner and outer rings of the coil spring meets the design requirements, and ensure its dimension stability sex

Method used

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  • Heat treatment setting method for high-strength elastic material coil spring
  • Heat treatment setting method for high-strength elastic material coil spring
  • Heat treatment setting method for high-strength elastic material coil spring

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Embodiment Construction

[0018] In the specific implementation process, the heat treatment and shaping method of the high-strength elastic material coil spring of the present invention, the specific steps are as follows:

[0019] 1. Shaping fixture design

[0020] Such as Figure 2(a)-Figure 2(b) As shown, according to the structural characteristics of the coil spring parts, the shaping fixture is designed to fix the structure of the jacket. After the coil spring parts are loaded, pins of different sizes are placed in the gaps of the coil spring parts to ensure the shape of the coil spring parts.

[0021] 2. The principle of heat treatment and shaping

[0022] After winding according to the requirements of the design drawing, it is necessary to carry out heat treatment for shaping and aging. This is the key process of forming the coil spring. Due to the special shape of the coil spring, it is different from the general clockwork spring. The shape of the general clockwork spring is an Archimedes spira...

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Abstract

The invention relates to the field of aero-engines, in particular to a heat treatment setting method for a high-strength elastic material coil spring. The coil spring part requires a large deformation space, the intervals between circles of the coil spring part are not equal, the intervals of the inner circles are large while the intervals of the outer circles are small, the deformation rule is violated, and the outer diameter is limited. A ring type heat treatment setting clamp is adopted, the coil spring part is screwed and put into the setting clamp, and pins of different sizes are nailed into the intervals between the circles, thereby ensuring that the intervals of the inner circles are large while the intervals of the outer circles are small for heat treatment setting processing, and ensuring that the intervals between the circles are different. A vacuum furnace is adopted, heat preservation is carried out at the temperature of 800+/-10 DEG C for 60-75 min, and then carried out again for 120-135 min after the furnace is cooled to be 700+/-10 DEG C, and argon is injected for cooling. Thus, the problems of deformation and non-uniform intervals after the coil spring is formed are solved through adopting the heat treatment setting; it is ensured that the sizes of the intervals of the inner circles and the outer circles of the coil spring meet the design requirements; and the size stability is also ensured.

Description

technical field [0001] The invention relates to the field of aero-engines, in particular to a method for heat treatment and shaping of high-strength elastic material coil springs. Background technique [0002] The coil spring is mainly used in the engine control system. The elastic element is assembled in the nozzle and connected to the sensor through the rocker arm. It is mainly subjected to torsional force and the working temperature does not exceed 200°C. The elastic force of the coil spring ensures that there is a fixed gap between the nozzle and the sensor. When the engine is working, the coil spring is always stressed. For coil spring design requirements, see Figure 1(a)-Figure 1(c) , the tooling 2 is equipped with an elastic force tester 3, the coil spring 1 is set between the tooling 2 and the elastic force tester 3, one end of the coil spring 1 is connected to the elastic force tester 3, and the other end of the coil spring 1 is installed on the tooling through the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/02
Inventor 宋金贵崔媛曹一超滕志强宋玺玉
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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