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China Stainless Steel Sink Manufacturers Share Why Cold Rolling Is Used

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Today, China Stainless Steel Sink manufacturers will share the difference between hot and cold rolling of stainless steel:

Hot rolling is based on slabs and is heated to form strips from roughing mills and finishing mills. The hot steel strip from the last rolling mill of the finishing mill is cooled to a set temperature by laminar flow, rolled into a steel coil by a coiler, and the cooled steel coil is subjected to different finishing operations according to different needs of users. Wire processing results in steel, flat rolls and slitting steel strip products. To put it simply, a steel billet is refined by several passes after heating, and then trimmed and corrected to become a steel sheet. This is called hot rolling.

Cold rolling: hot-rolled steel coil is used as raw material, and the scale is removed by acid pickling and then cold-rolled. The finished product is rolled hard roll. The cold work hardening caused by continuous cold deformation makes the strength and hardness of the rolled hard roll rise and tough. The plastic index is reduced, so the stamping performance will deteriorate and can only be used for parts that are simply deformed. Rolled hard rolls can be used as raw materials for hot-dip galvanizing plants because the hot-dip galvanizing units are provided with an annealing line. The rolled hard coil weight is generally 6 to 13.5 tons, and the steel coil is continuously rolled at a normal temperature. The inner diameter is 610mm.

The difference between hot rolled and cold rolled sheets can be attributed to the following points:

1. The cold plate is processed by cold-rolling without oxidation scale and the quality is good. The hot plate is treated with hot-rolled surface with scale, and the thickness of the plate is lower.

2. The toughness and surface flatness of the hot rolled sheet are poor, the price is low, and the cold rolled sheet has good stretchability and toughness, but the price is relatively expensive.

3. Rolling is divided into cold rolling and hot rolling, and the recrystallization temperature is used as a distinguishing point.

4, cold rolling: cold rolling is generally used to produce strip, its rolling speed is higher hot rolling: the temperature of hot rolling is similar to the temperature of forging

5. The surface of the hot-plated plate that is not plated is dark brown, and the surface of the non-plated cold-rolled plate is gray. After plating, it can be distinguished from the smoothness of the surface, and the smoothness of the cold-rolled sheet is higher than that of the hot-rolled sheet.

information about China Stainless Steel Sink :

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Target Nation: Northern Ireland
Target City : Yuyao
Last Update : 26 September 2019
Number of Views: 60
Item  Owner  : afastainlesskb
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2020-03-29 (0.123 sec)