(1) Choose a better tap material. Adding extra alloying elements to ordinary high-speed object steel can significantly improve the wear resistance and toughness of the tap.
(2) Coating titanium nitride coating on the surface of the tap rib can significantly improve the wear resistance, heat resistance and lubricity of the tap.
(3) Properly increase the rake angle of the tap. However, it should be noted that if the rake angle of the tap is too large, it is easy to cause the tap to collapse and the ribs to be attacked when the knife is retracted.
(4) Properly increase the amount of tap shovel back. However, it should be noted that if the amount of shovel back is too large, it is easy to cause the signs of chips to be jammed into the rear angle of the tap when the knife is retracted, and the finish of the tapped rib is not safe.
(5) Reasonably select the tool heat treatment technique, with the hardness and toughness of the two full taps.
