It is difficult to process the high quality tubing thread only by CNC lathe. It can only be realized by controlling the quality of raw materials from the source and implementing total quality control in the upsetting process of tube blank.
In the process of upsetting and manufacturing, a complete, systematic and scientific quality management system should be established. The upsetting section that affects the quality of thread processing, including the key links and factors of the thickened transition zone, should be checked at all levels. PDCA program control should be strictly implemented, and the result management should be transformed into process management, so as to improve the reliability, applicability and economy of the quality of tubing thread To ensure the safety and reliability of the tubing in use to the greatest extent, reduce the failure of the tubing, extend the service life of the tubing, and reduce the engineering cost.