The difference between cold forging nuts and hot forging nuts

Cold heading: It is the use of plasticity in metal to apply pressure or cold drawing with cold mechanics to achieve the purpose of solid metal deformation.

The forging method of thickening the top of a bar or wire at room temperature. Cold heading is mainly used to manufacture parts such as bolts, nuts, nails, rivets and steel balls. The 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 to realize continuous, multi-station and automated production. Cutting, heading, accumulation, forming, chamfering, thread rolling, diameter reduction and trimming can be completed in sequence on the cold heading machine. The production efficiency is high, up to more than 300 pieces/min, and the diameter of the largest cold-headed workpiece is 48 mm. The schematic diagram of the cold heading bolt process is a typical process of cold heading bolts. Multi-station nut automatic cold heading machine is a multi-station nut automatic cold heading machine. The bar material is automatically fed to 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 stations in sequence by the clamp transfer mechanism for forming. (Guide: Analysis of my country's fastener market scale and industrial advantages)

In the catering industry, Lengdun refers to the production of cold meat, that is, the work of making cold sauce and smoked sauce, also called white case. Redun is the job of making frying and frying, also known as red case.

In the catering industry, Lengdun refers to the production of cold meat, that is, the work of making cold sauces and smoked sauces. Redun is also called red case, which is the job of making frying and frying.

As far as the surface is concerned, cold heading products look more beautiful than hot heading products, and the finish is better. In terms of use, hot heading nuts are generally harder than cold heading products, and their strength is higher. For users with high requirements, the material is There is a big difference.

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