Precise heat treatment method of high-precision elastic element
A heat treatment method and elastic element technology, which can be used in heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve the problems of quenching and oxidation of elastic elements, and reduce the accuracy of the elastic elements, so as to reduce the thermal deformation of quenching, ensure the temperature uniformity, and ensure the size and shape. Effect
Active Publication Date: 2011-07-27
BEIJING SATELLITE MFG FACTORY
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[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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[0033] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0034] Such as figure 1 Shown is the flow chart of the heat treatment process of the high-precision elastic element of the present invention, including tooling clamping, quenching treatment, surface cleaning, tempering treatment and loading aging treatment, as follows:
[0035] (1) Tooling the elastic element 1, such as image 3 Shown is a schematic diagram of the structure of the quenching tooling of the present invention. The quenching tooling includes an adjusting rod 5, an upper fixing plate 3, a lower fixing plate 4 and a fixing nut 2, wherein the adjusting rod 5 is located between the upper fixing plate 3 and the lower fixing plate 4 and is fixed by The nut 2 is fastened, and the fixing nut 2 is located at the upper end of the upper fixing plate 3. Adjusting the fixing nut 2 can adjust the overall height of the elastic element 1 up and do...
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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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IPC IPC(8): C21D1/62C21D1/18C21D1/767C21D8/00C21D9/52
Inventor 杨鑫张立功于芳苗伟
Owner BEIJING SATELLITE MFG FACTORY
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