In order to extend the life of the tap and improve the quality of thread processing, On the furnace rolling mill, the thermo mechanical history of the entire length of the large flange changes significantly, especially in the production of micro-large flanges, which will strongly affect the degree of recrystallization, grain growth and precipitation on the finishing mill, and lead to Dramatic changes in ultimate microstructure and function over the length of the large flange.
In the production of micro-large flanges, it will strongly affect the degree of recrystallization, grain growth and precipitation on the finishing mill, and lead to drastic changes in the ultimate microstructure and function of the entire large flange length. The best way to solve the longer base length of the tap is to customize the tap with a shorter base according to the specific requirements of the thread being machined.
The addition of special alloying elements to ordinary high-speed tool steel can significantly improve the wear resistance and toughness of the tap. Coating the surface of the tap thread with titanium nitride can significantly improve the wear resistance, heat resistance and lubricity of the tap.