Precise heat treatment method of high-precision elastic element

Abstract

The invention relates to a precise heat treatment method of a high-precision elastic element. In the invention, quenching is carried out by adopting a fluidized particle furnace and elastic element quenching treatment equipment, wherein graphite particles are used as a heating medium and optimized design is carried out on the quenching temperature, the heat preservation time and the cooling manner so that the non-oxidation quenching treatment of the high-precision elastic element is realized and the surface quality and the size precision of the high-precision elastic element are improved; according to the quenching rigidity of the high-precision elastic element, proper technological parameters are selected to carry out tempering treatment; and loading ageing treatment is conducted to the element by adopting elastic element loading treatment equipment so that the stress relaxation property of the elastic element is improved, the stress in the winding process is reduced and the micro-yield strength is effectively improved. Through the heat treatment method of the invention, the high-precision elastic element is free of oxidation on the surface, free of deformation on the size and stable in mechanical property after the quenching, and the reliability and the quality of the heat treatment of the high-precision elastic element are improved.

Description

technical field [0001] The invention relates to a precision heat treatment technology for elastic components, in particular to a precision heat treatment method for high-precision elastic components. Background technique [0002] High-precision elastic elements are commonly used components in spacecraft structures and mechanisms, machinery, and electronic products. After forming, elastic elements need to be strengthened by heat treatment to meet their technical indicators such as hardness, strength, and elasticity. The dimensional deviation of the high-precision elastic element is small, and the oxidation, thermal stress, tissue stress, etc. generated during the heat treatment process can easily cause the dimensional tolerance of the elastic element; the micro-yield deformation of the elastic element when used under high stress conditions affects its mechanical properties . [0003] In the heat treatment of high-precision elastic components, air furnace or salt bath furnace...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, and provide a precision heat treatment method for high-precision elastic elements. The method adopts a fluidized particle furnace as a quenching device, and granular graphite is used as a heating medium to quench the elastic element. , and with the help of quenching tooling, and at the same time, the elastic element is loaded with the loading effect tooling, which solves the problems of quenching oxidation and precision drop of the elastic element, realizes the oxidation-free quenching and high dimensional accuracy of the elastic element, and greatly improves the elasticity Component reliability and product quality of elastic components

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