The drill bit is semi-closed cutting, and the heat of drilling is difficult to spread outward, so it is easier to form a high cutting temperature. Therefore, the main cause of bit wear is thermal wear, for high-speed steel bit, mainly phase change wear. In addition, there are contact fatigue, excessive deformation, edge breaking, brittle […]
According to the machining characteristics of the material, the drill bit is required to have the following characteristics: the hardness of the drill bit must be greater than the hardness of the workpiece to be processed. Because the bit bears a lot of torsion and axial force when machining the workpiece, it must have enough […]
One auto parts manufacturer sends taps for repairs every 2,000 to 3,000 holes it processes. In this way, each tap can be reused three times. But if he uses the taps until they are completely damaged and then sends them back for repair, they may only be able to process 1,000 more. We recommend that […]
Tool materials Common tool materials in tool grinding are: high speed steel, powder metallurgy high speed steel, hard alloy and PCD, CBN, cermet and other superhard materials. High speed steel tool sharp, good toughness; Carbide cutting tools have high hardness but poor toughness. The density of carbide tool is obviously higher than that of HSS […]
