(1) select the better taps material. The addition of special alloy elements to ordinary high speed tool steel can significantly improve the wear resistance and toughness of tap.
(2) coating titanium nitride coating on tap surface can significantly improve wear resistance, heat resistance and lubricity of tap.
(3) appropriately increase the front angle of the taps. But it should be noted that if the tap angle is too large, it is easy to cause thread edges and edges of the tap when cutting back.
(4) appropriately increase the back of the taps. But we should pay attention to that if the amount of shovel is too large, it is easy to produce chips in the back corner of the tap when cutting back, and the thread is not smooth.
(5) reasonable selection of tool heat treatment methods to take into account the hardness and toughness of tap.
