Tungsten carbide screw-tap compared with most turning, milling and drilling tools are different, tungsten carbide taps’ cutting edge are relatively weak, and the overall strength is lower. Even in the workpiece material is relatively easy to cut when machining, tungsten carbide screw-tap’s cutting edge is also prone to chipping, leading to tool failure. When the low carbon steel tapping, continuous long chips may clog the chip flute taps, thus limiting the number of Tungsten Carbide Screw-tap applied even more easily than the workpiece material tapping steel (such as aluminum and iron).
Steel and other iron-group material are the most common needs of processing and assembly with the screw holes in the material, therefore, tool manufacturers are sparing no effort to develop cutting edge to prevent chipping and breakage of taps. Given carbide and high speed steel can be compared with the innate superiority, and therefore Tungsten Carbide Screw-tap has become a developmental point.
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