Stainless steel coil
can be understood as an extension product of ultra-thin stainless steel sheet. A long narrow stainless steel sheet is usually manufactured to meet the needs of various industrialized mechanical products. Its maximum width can not exceed 1220 mm, but its length is not limited. Stainless steel coil can be divided into cold rolled stainless steel coil and hot rolled stainless steel coil according to the processing method.
Cold rolled stainless steel coil
The stainless steel coil was rolled by cold rolling mill at room temperature. Conventional thickness ranges from 0.1 mm to 3 mm and width from 100 mm to 2000 mm.
Cold-rolled stainless steel coil has the advantages of smooth surface, flat surface, high dimensional accuracy and good mechanical properties. Most of the products are rolled and can be processed into coated steel sheets.
The production process of cold rolled stainless steel coil is pickling, normal temperature rolling, lubrication, annealing, leveling, fine cutting and packaging.
Hot rolled stainless steel coil
It is made of hot coil mill with a thickness of 1.80mm-6.00mm and a width of 50mm-1200mm. Hot-rolled stainless steel has the advantages of low hardness, easy processing and good ductility. Its production processes are pickling, high temperature rolling, process lubrication, annealing, leveling, finishing and packaging.
There are three main differences between cold-rolled stainless steel coil and hot-rolled stainless steel coil. First of all, the strength and yield strength of cold-rolled stainless steel coil are better, and the ductility and toughness of hot-rolled stainless steel coil are better. Secondly, the thickness of cold-rolled stainless steel coil is ultra-thin, while that of hot-rolled stainless steel coil is larger. In addition, the surface quality, appearance and dimensional accuracy of cold-rolled stainless steel coil are better than those of hot-rolled stainless steel coil.