The earliest cold heading machine in the world originated from Germany. The main purpose of developing the cold heading machine at that time was to mass-produce bullet casings during World War II.

(1) According to the theory of metal plastic deformation, a certain pressure is applied to the metal billet, causing plastic deformation in the die cavity, and forming it into the specified shape and size.

(2) High-quality metal materials with good plastic deformation properties must be selected, such as rivet steel. Their chemical composition and mechanical properties have strict standards.

(3) There are many types and series of cold heading bolt and nut forming machines. The equipment has reliable performance, high efficiency, and stable quality.

(4) The forming and forging force of the product is large. The power configuration is large, and the equipment has a high initial investment. Therefore, the production of specifications below M24 is the most economical.

(5) It has good surface quality and high dimensional accuracy. Because there is cold hardening during the cold forging process, the deformation amount should not be too large. Cracking can be reduced.

(6) The cold heading process is applicable to products with large batches and various specifications. Only in this way can the cost be reduced.

Modern cold heading machines have increased from the simple two-station type in the past to multi-station types. The newer domestic varieties include 5-mold, 6-mold, and 6-mold extended-type cold heading machines.