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What is the production process of cold drawn steel

2024-03-28 14:55

The production process of cold drawn steel generally includes main processes such as sharpening, heat treatment, pickling, lubricant application, drying, drawing, straightening, cutting, oiling, and packaging. The drawing process varies depending on the specifications and materials of the drawing tube, wire, and rod.

Cold drawn steel is a multi pass, multi process, and cyclic process. Due to the limitation of the tensile strength of the metal, the reduction rate of the cross-sectional area of cold drawn steel in each pass is generally less than 40%, so it needs to go through multiple drawing processes from raw materials to finished products.

The characteristic of cold drawing process is to use external force to act on the front end of the pulled metal, pulling the metal billet out of the mold hole smaller than the cross-section of the metal billet, increasing its length and reducing the cross-section. It is commonly used to produce products with very small cross-sectional dimensions, such as thin metal wires, thin metal pipes, steel wires, etc; In addition, it can also be used to produce large-diameter profiles or pipes, as well as seamless steel pipes below 50mm, and the product size is accurate and the surface is smooth.

The processing method of using tensile force to pass steel billets through various conical die holes and change their cross-section to obtain precisely sized and smooth surface products is called cold drawing.



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