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Cutting tooth plasma beam surface metallurgy process

A technology of plasma beams and picks, which is applied in the direction of earthwork drilling and slitting machinery, can solve the problems of large consumption of spare parts and great loss of economic benefits, and achieve the effects of convenient processing, high wear resistance, and high economic indicators

Inactive Publication Date: 2014-07-02
ANQING LINGBAO MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the improvement of coal mine production mechanization, the selection and use of cutting tools for mining equipment is particularly important. The pick is a vulnerable part of the shearer. Each shearer consumes a large number of accessories every year, and the loss of economic benefits is very large. Big

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  • Cutting tooth plasma beam surface metallurgy process

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Embodiment Construction

[0018] Referring to the accompanying drawings, the pick plasma beam surface metallurgy process is characterized in that:

[0019] Its process steps are as follows:

[0020] (1) Blank preparation: For blanking the workpiece, use medium hardenability carburizing steel 20CrMnTi or 20CrMnMo steel rod as raw material;

[0021] (2) Precision forging: use intermediate frequency heating to 1200°C, finish forging after uniform temperature, final forging temperature is 880°C, and quench with lye after forging;

[0022] (3) DC-Plasma-Jet gradient metallurgy high wear-resistant material on the outer surface of the tooth head: the pick is clamped on the rotating device, heated and melted from the upper surface of the tooth head with a plasma beam, and formed in the molten pool of the tooth head at one time , inject high wear-resistant material mixed powder composed of Cr, Ni, W, Mo, V, C, B, Si and TiC, after the powder is melted, it will fuse with the substrate and solidify to form a har...

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Abstract

The invention discloses a cutting tooth plasma beam surface metallurgy process which is characterized by comprising the following steps: preparing a blank, finely fogging, arranging a highly wear-resistant material on the outer surface of a tooth end part in a DC-Plasma-Jet gradient metallurgy manner, drilling brazing blind holes, brazing hard alloy, performing secondary gradient metallurgy on the surface of the tooth end part, performing overall sand blasting, coating oil and packaging. The method overcomes the defects of the prior art, cutting teeth with high abrasion resistance can be obtained by using a plasma beam surface metallurgy technique, the cutting teeth are greatly improved, and the method can be widely applied to industry, and is good in stability, relatively high in economic index and convenient to use and process.

Description

technical field [0001] The invention relates to the technical field of pick production, in particular to a pick plasma beam surface metallurgy process. Background technique [0002] With the improvement of coal mine production mechanization, the selection and use of cutting tools for mining equipment is particularly important. The pick is a vulnerable part of the shearer. Each shearer consumes a large number of accessories every year, and the loss of economic benefits is very large. big. [0003] The pick is subjected to the wear and impact of coal and rock during operation, and its failure mode is mainly abrasive wear and fracture. Therefore, the tip of the pick is required to have high hardness and wear resistance, and the tooth body has good strength and toughness. And prevent bending deformation and fracture. How to improve the wear resistance of the pick and further improve its life is a problem to be solved. Contents of the invention [0004] The purpose of the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10B22F1/00E21C35/183
Inventor 洪星
Owner ANQING LINGBAO MACHINERY