Cermet Materials for Shearer Picks

Abstract

The invention discloses a cermet material for a shearer pick, which is made of the following components in mass percentage: 67.42% of diamond, 15% of silicon carbide, 10% of titanium nitride, 0.5% of amorphous silicon dioxide, Cobalt oxide 0.2%, boron carbide 6%, tungsten carbide 0.3%, graphene 0.08%, nano iron powder 0.3%, niobium carbide 0.2%. The cermet material of the present invention has the characteristics of high hardness, good toughness, wear resistance and impact resistance, and cladding on the head of the pick can well protect the head of the tooth body of the pick, reduce the wear speed of the tooth body of the head, and make the tooth body and The alloy head wears synchronously to achieve the best fit.

Description

technical field [0001] The invention relates to the technical field of picks, in particular to a cermet material for a shearer pick. Background technique [0002] In the prior art, coal mining and excavation picks are the key components of large coal shearers and roadheaders. Generally, carbide pick heads and alloy steel are welded (brazed) together, which are mainly used in mining in coal fields. In mining fields such as coal and roadway excavation, with the increasing demand for resources, large-scale mining machinery is used more and more widely, so higher requirements are put forward for the performance of mining picks. [0003] At present, although the hard alloy pick head used has better wear resistance than steel, it still cannot meet the service life requirements, and due to the poor life of this kind of pick, it leads to frequent replacement of picks, making The efficiency of mining machinery cannot be fully utilized. At the same time, because the pick shank is ma...

AI Technical Summary

Problems solved by technology

[0003] At present, although the hard alloy pick head used has better wear resistance than steel, it still cannot meet the service life requirements, and due to the poor life of this kind of pick, it leads to frequent replacement of picks, making The efficiency of mining machinery cannot be fully utilized

At the same time, because the pick shank is made of alloy steel and other materials, the pick shank is extremely non-wear-resistant, causing the carbide pick head to fall off prematurely, resulting in premature damage and failure of the entire pick. The tooth shank is heat treated or a layer of wear-resistant welding rod is surfacing on the surface of the pick shank to increase the wear resistance and achieve the purpose of keeping the diameter, but the effect is not obvious

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