High-hardness metal protective layer wear-resistant cutting pick

Abstract

The invention discloses a wear-resistant pick with a high-hardness metal protective layer, which comprises a pick body. A high-hardness metal protective layer is clad on the head of the pick by using a plasma cladding method on the head of the pick body; The high-hardness metal protective layer is composed of 60-90 parts of diamond, 30-50 parts of recovered wax, 5-15 parts of stearic wax, 5-20 parts of paraffin wax, 2-10 parts of borax, and quartz powder in parts by weight. 8‑20 parts, 1‑2 parts of iron oxide, 1‑2 parts of calcium oxide. Due to the rational use of diamond, recycled wax, and stearic wax in the present invention, the obtained metal protective layer has the characteristics of high hardness, good toughness, wear resistance and impact resistance, etc., which protects the head of the pick tooth body well and reduces the head of the pick. The wear speed of the inner tooth body is controlled, so that the tooth body and the alloy head wear synchronously to achieve the best fit, greatly improving the wear resistance and service life of the pick.

Description

technical field [0001] The invention relates to the field of pick processing, in particular to a wear-resistant pick with a high-hardness metal protective layer. Background technique [0002] The pick is one of the vulnerable parts in coal mining and tunneling machinery. It is the main tool for coal falling and crushing. Its performance directly affects the production capacity, power consumption, working stability and stability of coal mining machinery. The service life of other related parts. The general structure is to inlay the hard alloy cutter head on the quenched and tempered low alloy structural steel cutter body. [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...

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