Impregnated diamond compact strong wear resistance pick and manufacture process thereof

Abstract

The invention discloses an impregnated diamond compact strong wear resistance pick and a manufacture process thereof; the pick comprises a steel body pick body, a pick head and a compact pick tip; the compact pick tip is welded at the middle part of the pick tip through brazing; the steel body pick body and the pick tip are sintered as a whole directly through the powder metallurgy method and the hot pressing technology; the raw materials of the pick tip include matrix powder and diamond; the matrix powder contains cobalt powder, nickel powder, iron powder, copper powder, manganese powder, tin powder, chromium powder and carbonized tungsten powder which mixed in proportion, the granularity of diamond is within the range of 0.42-0.074 mm, and the proportion of the volume of diamond to the volume of the pick tip equals to 5-50 percent; and the process comprises the steps of matrix powder compounding, distribution and mixing of working layer materials, hot pressing sintering formation, sand blasting and brazing. The pick provided by the invention has the advantages of high operating efficiency and long service life, and is suitable for equipment for coal cutting, mining, well drilling and the like.

Description

technical field [0001] The invention relates to a cutting tooth used for coal mining, mining and drilling equipment, in particular to a strong wear-resistant cutting tooth impregnated with diamond composite sheets and a manufacturing process thereof. Background technique [0002] A conventional pick refers to welding a hard alloy tooth tip on the tooth head, and the steel body of the pick 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] In view of this, the object of the present invention is to provide a diamond-impregnated composite sheet strong wear-resistant pick, which can improve...

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

Images