The welded tungsten steel drill bit is made by smoothly welding a tungsten steel tooth crown on the steel drill body. This kind of drill bit adopts self-centering geometric edge type, with small cutting force, can achieve excellent chip control for most workpiece materials, and the processed hole has good surface finish, high dimensional accuracy and positioning accuracy. Perform subsequent finishing. The drill adopts an internal cooling system, which can be used in machining centers, CNC lathes or other high-rigidity, high-speed machine tools.

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