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Heat treatment improvement process of wave spring for bearing

A technology of wave spring and process, which is applied in the field of spring processing technology and heat treatment improvement process of wave spring for bearings. It can solve the problems of unstable anti-decarburization protection, bonding and oxidation of carburizing agent and workpiece, and achieve improved quenching protection. method, prevention of oxidative decarburization, and the effect of optimizing process conditions

Inactive Publication Date: 2016-12-07
SUZHOU CITY HUQIU DISTRICT HUSHUGUAN SPRING FACTORY
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Problems solved by technology

In the existing heat treatment process, the carburizing agent is usually prepared by adding a carburizing agent to the charcoal, and then the workpiece is protected and quenched. Since the charcoal in the carburizing agent is inhomogeneous granular, and the carburizing agent is powder, the two It is difficult to mix the carburizing agent evenly, and sometimes the carburizing agent and the workpiece are bonded, which affects the quenching effect, so the protection against decarburization is unstable during the heating process, and oxidation is easy to occur, which leads to poor performance of the workpiece Stable, even the product quality may be unqualified

Method used

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  • Heat treatment improvement process of wave spring for bearing

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Embodiment

[0018] The specific processing method is as follows:

[0019] a) To create a protective atmosphere, first heat the box-type resistance furnace to 850°C, then add charcoal to the furnace and keep the temperature constant for 20 minutes, so that the charcoal will react with the oxygen in the furnace to generate carbon dioxide or carbon monoxide gas, thereby reducing the amount of gas in the process of workpiece processing Oxidative decarburization trend.

[0020] b) Preheat the quenching tool, put the quenching tool in the box-type resistance furnace to keep the temperature for 30 minutes, then take it out, and wait for the workpiece to be installed.

[0021] c) The workpiece is painted with anti-oxidation and decarburization coating, and the self-made anti-oxidation and decarburization coating is painted on the surface of the workpiece to isolate the oxygen from the surface of the workpiece during the quenching and heating process, and further reduce the tendency of oxidation a...

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Abstract

The invention provides a heat treatment improvement process of a wave spring for a bearing. The heat treatment improvement process comprises the following steps: (a), creating a protective atmosphere; (b) preheating a quenching tooling; (c) coating a workpiece with oxidation-decarbonization resistant paint; (d) subjecting the workpiece to quenching treatment; and (e) subjecting the workpiece to tempering treatment. The heat treatment improvement process disclosed by the invention has the advantages that the process conditions are optimized and a quenching protection method is improved, thereby effectively protecting the workpiece from oxidation and decarbonization during a heating process, and guaranteeing the performance stability of the workpiece.

Description

technical field [0001] The invention relates to a spring processing process, in particular to an improved heat treatment process of a wave spring for a bearing, and belongs to the technical field of springs. Background technique [0002] A spring is a mechanical part that uses elasticity to work. As an important component in an industrial system, it has a large amount of use and a wide variety. Although the spring industry is a small industry in the entire manufacturing industry, its role is very important. The country's industrial manufacturing and automobile industries need to accelerate development, and the spring industry, as one of the basic parts and components, needs to have an advanced stage of development in order to adapt to the rapid development of the country's entire industry. In addition, the expansion of the scale and variety of spring products and the improvement of the quality level are also the needs of the replacement of mechanical equipment and the impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/02C21D1/18C21D1/70C21D1/74
CPCC21D9/02C21D1/18C21D1/70C21D1/74
Inventor 徐水龙
Owner SUZHOU CITY HUQIU DISTRICT HUSHUGUAN SPRING FACTORY
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