Novel wear-resisting point-attack pick

Abstract

The invention discloses a novel wear-resisting point-attack pick. The novel wear-resisting point-attack pick mainly comprises a pick body and a hard alloy. The pick body is composed of a pick head and a pick handle, the hard alloy is welded to an alloy hole of the pick body and composed of a cone-shaped big head and a cylinder-shaped small handle, the small handle of the hard alloy is evenly provided with protruded ribs which are arranged longitudinally, the bottom of the small handle is provided with a concave counterbored hole, and the pick handle of the pick body is provided with a clamp spring through an annular concave clamp groove in a clamped mode; the periphery of the pick head is provided with a wear-resisting layer, and the wear-resisting layer is metal carbide compounded by chromium, vanadium and niobium metal powder and a nonmetallic boron and carbon compound material. The novel wear-resisting point-attack pick has the advantages that the welding quality is high, wear is resistant, the alloy structure is reasonable, the use amount is few, and the working is stable; the service life of the point-attack pick is effectively prolonged.

Description

technical field [0001] The invention relates to the field of drilling tools for coal mining, in particular to a novel wear-resistant pick-shaped pick. Background technique [0002] The pick pick is an easy-wearing part, and it cooperates with other cutting tools to complete the construction of coal mining, quarrying, hydropower projects, etc. The pick pick is mainly composed of a pick body and a hard alloy brazed on the pick body. During use, due to the wear of the alloy body, the pick body cannot be effectively protected, resulting in excessive wear of the tooth head. At the same time, the hard alloy adopts plane brazing, which has the phenomenon of uneven thickness of the weld, poor brazing firmness, and easy to cause the alloy head to fall off during use, which affects the overall service life of the pick body. Contents of the invention [0003] The invention aims to provide a novel wear-resistant pick pick with high practicability. [0004] In order to achieve the st...

AI Technical Summary

Problems solved by technology

The pick pick is mainly composed of a pick body and a hard alloy brazed on the pick body. During use, due to the wear of the alloy body, the pick body cannot be effectively protected, resulting in excessive wear of the tooth head

At the same time, the cemented carbide is brazed on a flat surface, and there is a phenomenon of uneven thickness of the weld, and the brazing firmness is poor, and the alloy head is easy to fall off during use, which affects the overall service life of the pick body.

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