The method of forging the top of the bar or wire at room temperature by thickening.
Cold heading is mainly used to manufacture bolts, nuts, nails, rivets and steel balls. Forging material can be copper, aluminum, carbon steel, alloy steel, stainless steel and titanium alloy, etc., The material utilization rate can reach 80 ~ 90%. Cold heading is mostly carried out on a dedicated cold heading machine, which is convenient for continuous, multi-station and automated production.
On the cold heading machine, it can complete the processes of material cutting, heading, accumulation, forming, chamfering, thread rolling, diameter reduction and edge trimming. The bar material is automatically fed into a certain length by the feeding mechanism, and the cutting mechanism cuts it into blanks, and then is sent to the accumulation pressure forming and punching station by the clamp conveying mechanism for forming.