Method for heat treatment of 65Mn steel-made electronic scale sensor elastic body

A heat treatment method and sensor technology, used in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve the problems of insufficient toughness, temper brittleness, dispersion of fatigue life times, and short fatigue life.

Inactive Publication Date: 2010-07-14
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0003] Existing problems: In the process of mass production of elastomer 415 and 417, no matter after heat treatment or in the finished product, samples are taken for fatigue life test, the result is that the life of some products does not meet the requirement of 18,000 times, and the fatigue The number of lifetimes

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Embodiment Construction

[0018] The heat treatment method of the present invention: put the 65Mn steel electronic balance sensor elastic body (stamping and forming parts) on a continuous production line to complete the whole process of heat treatment. Process flow: heating at 830°C for 15 to 30 minutes--cooling with hot oil at 100°C for 5 minutes-cleaning and drying--heating at 400°C for 80 minutes and tempering, water cooling--drying--inspection of production and heat treatment products.

[0019] The above-mentioned quenching heating furnace is a high-temperature mesh-belt continuous furnace, which is protected by pyrolysis gas in the methanol furnace; the hot oil cooling and quenching uses a conveyor belt-type isothermal oil tank, and the cooling oil is fast bright quenching oil; the above cleaning is first cleaned with a hot water solution of a metal cleaning agent, Finally, clean water is used for spraying, all carried out on the conveyor belt; the water cooling after the above-mentioned tempering ...

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Abstract

The invention discloses a method for the heat treatment of a 65Mn steel-made electronic scale sensor elastic body, which completes the heat treatment on a heat treatment continuous production line and which comprises the following specific steps: stamping molding material of the 65Mn steel-made electronic scale sensor elastic body is heated to 830 DEG C, quenching the material for 5 minutes in hot oil at 100 DEG C after heat preservation is performed for 15 to 30 minutes, then cleaning and drying the material; subsequently heating at 400 DEG C and preserving the heat for 80 minutes, followed by tempering; after the tempering, rapidly hydrocooling and drying, and detecting product; in the method according to the invention, the tempering temperature is raised to 400 DEG C, the resultant hardness is in a range of 43+/-1.5, so the demand of linearity can be met; plasticity and toughness of parts are enhanced by increasing the proportion of tempered sorbite; the method according to the invention rapidly hydrocools the material after tempering to prohibit harmful impurity elements such as P, S O, etc. in the material from grain boundary segregation, thereby suppressing temper brittleness.

Description

technical field [0001] The invention relates to the field of metal materials and heat treatment, in particular to a heat treatment method for an elastic body of a 65Mn steel electronic balance sensor. Background technique [0002] Generally, 415 and 417 elastic bodies of electronic scale sensors made of hot-rolled coils are used in engineering. The existing production process is: stamping forming-heat treatment (oil cooling quenching after heating at 850°C + tempering at 380°C for 80 minutes) Air cooling) --- fatigue life test --- product quality inspection - electroplating finished product --- fatigue life test. [0003] Existing problems: In the process of mass production of elastomer 415 and 417, no matter after heat treatment or in the finished product, samples are taken for fatigue life test, the result is that the life of some products does not meet the requirement of 18,000 times, and the fatigue The number of lifetimes is scattered, and the data ranges from less tha...

Claims

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Application Information

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IPC IPC(8): C21D9/00C21D1/18
Inventor 卢国辉黄惠平揭晓华杨建宏
Owner GUANGDONG UNIV OF TECH
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