Novel-structure wear-resistant bit tooth

A new type of structure, technology of wear-resistant body, applied in the direction of earthwork drilling, slitting machinery, etc., can solve the problems of no impact toughness, broken carbide sleeve, non-abrasion resistance, etc., and achieve high-strength wear resistance, The effect of improving work efficiency and reducing coal mining cost

Inactive Publication Date: 2011-06-29
闵利新 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the tooth body of the existing mining machine pick has low hardness and is not wear-resistant; the tooth body of the tooth body of the mining machine with a sprayed cemented carbide powder adhesion layer structure, the adhesion layer is combined wi

Method used

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  • Novel-structure wear-resistant bit tooth
  • Novel-structure wear-resistant bit tooth
  • Novel-structure wear-resistant bit tooth

Examples

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Example Embodiment

[0015] Such as figure 1 Shown is a new structure wear-resistant pick body, the pick body (4) and wear-resistant body (2) of alloy structural steel are machined, and the pick body (4) and wear-resistant body ( 2) After being welded and solidified by copper brazing filler metal (3), annealing is carried out, and then the connecting part (5) of the pick body (4) and the wear-resistant body (2) of the alloy structural steel is punched and pinned for locking or punching The holes are tapped and screwed into the bolts for locking, and the cemented carbide studs (1) are welded and fixed on the wear-resistant body (2) by means of silver and copper brazing, and other heat treatment methods remain unchanged.

[0016] Such as figure 2 Shown is a new structure wear-resistant pick body. The pick body (4) and wear-resistant body (2) of alloy structural steel are machined. The upper end of the pick body (4) of alloy structural steel is machined with threads. (3) The lower end of the wear-resis...

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Abstract

At present, a bit tooth is prepared from an alloy-structure steel material; because the alloy-structure steel has low rigidity and is not wear-resistant, a hard alloy cylindrical tooth is broken and falls off early; the service efficiency of the precious hard alloy cylindrical tooth is only 30 percent, and the waste is great; a diamond cylindrical tooth prepared from a superhard material has higher requirement on wear resistance of the bit tooth; the upper end of the bit tooth is provided with a hard alloy sleeve to solve the problem of low wear resistance, but the hard alloy sleeve is broken after being impacted, and cannot protect the diamond cylindrical tooth; moreover, the hard alloy sleeve is high in price and the waste is great. The invention adopts a technical scheme that: a novel-structure wear-resistant bit tooth is characterized by consisting of a bit tooth made of alloy-structure steel, and a wear-resistant body at the upper end of the bit tooth made of the alloy-structure steel, wherein the wear-resistant body is made of die steel or high-speed steel. The hard alloy cylindrical tooth or diamond cylindrical tooth can be effectively protected; and the novel-structure wear-resistant bit tooth is widely applied to coal mines, metallurgy and tunnel engineering.

Description

technical field [0001] The invention relates to the technical field of mining machinery in the coal industry, in particular to a novel structure wear-resistant pick body used on a coal mining excavator. Background technique [0002] The pick is an important part of the excavator, and it is also the part that consumes the most and is most easily damaged. The technical requirements of the coal industry standard of the People's Republic of China "Coal Mining Picks MT246-1996" stipulate that the mining machine picks used in coal mines are welded by alloy structural steel tooth body and hard alloy column teeth. At present, the picks of mining machines used in coal mines are machined from alloy structural steel, and the cemented carbide column teeth are welded to the teeth of alloy structural steel. Grinding performance, only 1 mm deep heat treatment is done on the outer surface of the tooth, and its hardness is HRC45. Since the tooth body is made of alloy structural steel mater...

Claims

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Application Information

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IPC IPC(8): E21C35/183
Inventor 闵利新慕华波
Owner 闵利新
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