Cold sputum: It is the use of metal plasticity, cold pressure mechanics for pressure or cold drawing, to achieve the purpose of solid metal deformation.
A method of forging the top of a bar or wire at room temperature. Cold heading is mainly used to make parts such as bolts, nuts, nails, rivets and steel balls. The forging material can be copper, aluminum, carbon steel, alloy steel, stainless steel "target=_blank> stainless steel and titanium alloy, etc., the material utilization rate can reach 80-90%. The cold heading is carried out on a special cold heading machine, which is easy to realize. Continuous, multi-station, automated production. On the cold heading machine, the processes of cutting, hoeing, accumulation, forming, chamfering, twisting, shrinking and trimming can be completed sequentially. The production efficiency is high, up to 300 pieces/min. Above, the diameter of the largest cold heading workpiece is 48 mm. The schematic diagram of the cold heading bolt process is a typical process of the cold head bolt. The multi-station nut automatic cold heading machine is a multi-station nut automatic cold heading machine. The bar material is automatically sent by the feeding mechanism. After a certain length, the cutting mechanism cuts it into a blank, and then the clamp conveying mechanism sequentially sends it to the accumulation molding and punching station for forming.
In the catering industry, cold piers refer to the production of cold, that is, the work of making cold salad and smoked sauce, also known as the white case. The hot pier is the work of making fried and fried, also known as the red case.
As far as the surface is concerned, the cold heading product looks better than the hot product, and the finish is good. In terms of use, the hot nut is generally harder than the cold heading product, and the strength is higher. For users with high requirements, the material is very large. the difference.
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