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What is the difference between cold heading and hot heading?
Release time:
10 Jan,2022
A forging process in which the top of a bar or wire is thickened at room temperature. Cold heading is mainly used in the manufacture of bolts, nuts, nails, rivets and steel balls and other parts. The forging blank material can be copper, aluminum, carbon steel, alloy steel, stainless steel and titanium alloy, etc., and the material utilization rate can reach 80-90%.
1. Forging and forming method of thickening the top of the bar or wire at room temperature. Cold heading is mainly used in the manufacture of bolts, nuts, nails, rivets and steel balls and other parts. The forging blank material can be copper, aluminum, carbon steel, alloy steel, stainless steel and titanium alloy, etc., and the material utilization rate can reach 80-90%.
2, we often say that cold heading is the use of metal's own plasticity, pressure or cold drawing process, so that the metal can achieve the purpose of solid deformation. On the surface, cold heading products are more handsome and brighter than hot heading products, but in application, the hardness and strength of hot heading nuts are higher than that of cold heading products. For users with different needs, the material is very different.
Hot heading and cold heading are two different metal forming processes that provide similar results.
Forging is the process of deforming metal into a predetermined shape using certain molds and equipment-deformation is done using hot heading, cold heading or even warm forging.
4. Hot heading refers to the stamping of raw materials after heating. There are no special requirements for specific uses. Cold heading machine processing means that cold heading is required under normal circumstances, because of such surface smoothness, the organization of materials will be closer, and larger workpieces are often processed by hot heading.
5. Redun is also called Red Case, which is the work of making frying and frying. On the surface, cold heading products look more beautiful than hot heading products, good finish, in the use of hot heading nuts generally higher hardness than cold heading products, strength to be high, for high requirements of the user, the material is very different.
6. In production, it is customary to call forging without heating the blank as cold forging. Cold heading uses a forging method in which a die is used to form a metal bar upsetting (often local upsetting) at room temperature. It is generally operated on a cold heading machine and is usually used to manufacture the heads of screws, carbon steel bolts, rivets, etc. Cutting can be reduced or replaced.
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