Cold heading machine_Cold heading machine introduction
Source：http://mmjiao.cn Author：冷鐓機(jī) Time：2014/8/16 Click：
Basic introduction of cold heading machine
Cold heading machine is a specialized equipment mainly used for mass production of nuts, bolts and other fasteners The world's earliest cold heading machine originated from Germany The main purpose of developing cold heading machines at that time was to produce a large number of bullet shells during World War II
Cold heading process
(1) According to the theory of metal plasticity, a certain pressure is applied to the metal billet at room temperature to cause plastic deformation in the mold cavity, and it is formed according to the specified shape and size.
(2) It is necessary to choose high-quality metal materials with good plasticity, such as rivet steel, whose chemical composition and mechanical properties have strict standards.
(3) There are multiple models and series of cold heading bolt and nut forming machinery available. The equipment has reliable performance, high efficiency, and stable product quality.
(4) The product has a large forging force during molding, and the configuration power is high. The equipment requires a large initial investment. Therefore, producing specifications below M24 is the most economical.
(5) Has good surface quality and high dimensional accuracy. Due to the presence of cold work hardening during the forging process, the amount of deformation should not be too large. Reduce cracking.
(6) The cold heading process is suitable for products with large quantities and various specifications, in order to reduce costs. Modern cold heading machines have increased from simple two station machines to multi station machines. Currently, there are newer varieties of cold heading machines in China, including 5-mode, 6-module, and 6-module extended cold heading machines
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