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High-speed steel W18Cr4V die-casting die heat-treatment process

A technology of w18cr4v and high-speed steel, which is applied in the field of heat treatment process of high-speed steel W18Cr4V in the production of die-casting molds, can solve the problems of high energy consumption, low production efficiency, and long time consumption, and achieve energy saving, low quenching and tempering temperatures, The effect of reducing power consumption

Inactive Publication Date: 2012-03-21
SHANGHAI MARITIME UNIVERSITY
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Problems solved by technology

This heat treatment process scheme consumes a lot of energy, takes a long time, and has low production efficiency, which restricts the development of high-speed steel in die-casting molds

Method used

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  • High-speed steel W18Cr4V die-casting die heat-treatment process
  • High-speed steel W18Cr4V die-casting die heat-treatment process
  • High-speed steel W18Cr4V die-casting die heat-treatment process

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Embodiment Construction

[0022] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0023] The heat treatment process of the high-speed steel W18Cr4V die-casting mold proposed by the present invention includes: quenching the high-speed steel W18Cr4V die-casting mold once at 1150°C for 1.5 hours, and then tempering twice, the first tempering temperature is 300°C-400°C, It took 2 hours, and the tempering temperature for the second time was 570° C., and it took 1 hour. The heating power of the quenching electric furnace is 5KW, and the heating power of the tempering electric furnace is 2.5KW.

[0024] Because the present invention adopts high-speed steel W18Cr4V to make the best economical optimization process parameters of heat treatment in the die-casting mold process, the mold hardness can be the highest, the surface roughness ...

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Abstract

The invention provides a high-speed steel W18Cr4V die-casting die heat-treatment process, and the process flow comprises the following steps: quenching a high-speed steel W18Cr4V die-casting die once at 1150 DEG C for 1.5 hours, tempering twice, wherein the first tempering is performed at a temperature of 300 DEG C-400 DEG C for 2 hours, and the second tempering is performed at a temperature of 570 DEG C for 1 hours; the heating power of the quenching electric furnace is 5 KW, and the heating power of the tempering electric furnace is 2.5 KW. By using the heat-treatment optimal economically-optimized process parameters of the die-casting die manufacturing process by high-speed steel W18Cr4V, the die hardness is highest; the surface roughness is lowest; the heat-treatment time is 60% of that of routine processes; the quenching and tempering temperatures are lower than temperatures used in routine processes; electric energy consumption is reduced, and the electric energy is saved by above 35%.

Description

technical field [0001] The invention relates to a high-speed steel heat treatment process, in particular to a high-speed steel W18Cr4V heat treatment process applied to the production of die-casting molds. Background technique [0002] High-speed steel is a tool steel with high hardness, high wear resistance and high heat resistance, also known as high-speed tool steel or front steel. Its material structure contains a large number of high-hardness carbides, which have high strength, high hardness and High wear resistance, excellent wear resistance and high surface precision advantages. However, due to its high price and complex heat treatment process, its application range was limited to the tool manufacturing industry for a long time, and its application field was not wide enough. [0003] With the development of technology, high-speed steel has gradually entered the field of mold manufacturing. In the production process of mold products, machining and heat treatment proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D1/25B22D17/22
Inventor 季明浩沈剑叶善培
Owner SHANGHAI MARITIME UNIVERSITY
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