Cold heading machine process
  (1) According to the metal plastic deformation theory, a certain pressure is applied to the metal blank at room temperature to cause plastic deformation in the mold cavity, and it is formed according to the specified shape and size.
  (2) High-quality metal materials with good "plastic deformation" must be selected, such as riveting screw steel, whose chemical composition and mechanical properties have strict standards.
  (3) There are many models and series of cold heading bolt and nut forming machines. The equipment has reliable performance, high efficiency and stable product quality.
  (4) The forming force of the product is large, the configuration power is high, and the investment in equipment is large at one time. Therefore, the production specification below M24 is the most economical.
  (5) has better surface quality and higher dimensional accuracy. Due to the existence of cold work hardening in the upsetting process, the amount of deformation should not be too large. Reduces cracking.
  (6) The cold heading process is suitable for products with large batches and various specifications, so as to reduce costs.