What are the common tool materials in tool grinding?
Common tool materials in tool grinding include high-speed steel, powder metallurgy high-speed steel, hard alloy, PCD, CBN, cermet and other superhard materials. High speed steel tools are sharp and have good toughness, while carbide tools have high hardness but poor toughness. The density of carbide NC tool is obviously higher than that of high-speed steel tool. These two materials are the main materials for drills, reamers, milling inserts and taps. The performance of powder metallurgy high speed steel is between the above two materials, which is mainly used to manufacture rough milling cutter and tap.
High speed steel tools are not sensitive to collision because of their good toughness. However, the carbide NC blade is high in hardness and brittle, very sensitive to collision, and the edge is easy to jump. Therefore, in the grinding process, the operation and placement of cemented carbide tools must be very careful to prevent the collision between tools or the falling of tools.
Because the precision of high-speed steel tools is relatively low, their grinding requirements are not high, and their prices are not high, many manufacturers set their own tool workshops to grind them. However, cemented carbide tools often need to be sent to a professional grinding center for grinding. According to the statistics of some domestic tool grinding centers, more than 80% of the tools sent for repair are cemented carbide tools.
POST TIME: 2023-01-15
