Inlaid diamond-cemented carbide strong wear resistant pick and producing technique thereof

Abstract

The invention discloses a diamond-impregnated-cemented carbide strong wear-resistant cutting pick and a manufacturing process thereof. The cutting pick consists of a steel body tooth body (3), a tooth head (2) and a cemented carbide tooth top (1); wherein, the steel body tooth body (3), the tooth head (2) and the cemented carbide tooth top (1) are sintered into a whole by the method of powder metallurgy and thermocompression; the raw material of the tooth head (2) comprises matrix powder and diamond; the matrix powder contains cobalt powder, nickel powder, ferrous powder, copper powder, manganese powder, tin powder, chromium powder and tungsten-carbide powder in certain proportions; the granularity of the diamond is 0.42-0.074mm and the volume of the diamond is 5%-50% of the volume of the tooth head; the manufacturing process comprises matrix powder mixing, working lining materials mixing, hot-pressed sintering molding and sand blasting. The cutting pick of the invention has high working efficiency, long service life and simple and fast manufacturing process and is applicable to equipment of coal cutting, mining and well boring, etc.

Description

technical field [0001] The present invention relates to a pick used for coal mining, mining and drilling equipment, in particular to a diamond-impregnated hard alloy strong wear-resistant pick, and the invention also relates to the diamond-impregnated hard alloy strong wear-resistant pick Tooth manufacturing process. Background technique [0002] A conventional pick is to weld a hard alloy tooth tip on the tooth head, and the tooth body of the pick steel body is made of special steel (such as 30CrMnTi, 30CrMnSi, etc.). Since the material hardness of the tooth body of the pick steel body is much lower than that of the carbide tooth head, it is easy to wear, so the phenomenon that the carbide tooth head protrudes, falls off, desolders and breaks with the steel body tooth body during the cutting process often occurs. Resulting in a lower service life of the pick. Contents of the invention [0003] The first technical problem to be solved by the present invention is to provi...

AI Technical Summary

Problems solved by technology

Since the material hardness of the tooth body of the pick steel body is much lower than that of the carbide tooth head, it is easy to wear, so the phenomenon that the carbide tooth head protrudes, falls off, desolders and breaks with the steel body tooth body during the cutting process often occurs. resulting in lower pick life

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