Slab continuous casting, hot rolling and cold rolling process of S355MC steel plate

Posted:2023-02-07 14:30:13

The slab continuous casting process of S355MC steel plate is as follows: the casting billet is heated to about 1050℃ by furnace gas, then cooled to below 600℃ after pouring once, and then cooled twice. The hot rolling (or cold rolling) process of S355MC steel plate is as follows: ① Heat treatment before cold rolling: preheat is carried out in the heating furnace, and hot rolling is carried out. Cold rolling: in the cold bed through the heating furnace, so that the temperature of the steel coil, and then the process of rolling with high speed mill. (3) Rolling force: the rolling force can be controlled by the straightener. ④ Surface quality standard: The surface quality of S355MC steel plate is controlled according to the application requirements.

Selection of product classification and code (GB) when the steel type or grade is the same, the minimum value is taken as the code of the steel type or grade; When different from the same steel type or grade, the maximum value is taken as the code name of the steel type or grade; In a steel, if its properties are the same, the group with the highest performance value in the same steel number can be selected to represent. When the size of all S355MC steel plate is less than 4 mm, the limit specification is adopted. No more than 5 mm, according to the user's requirements and supply can also be directly supplied; If the length exceeds 5m or 20m, the value is calculated according to GB/T4722-2005.

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