TB/T1979 09CuPCrNi-A weather resistant steel plates rolling points

TB/T1979 09CuPCrNi-A weather resistant steel plates contain a lot copper, for the sake of copper brittle, the 09CuPCrNi-A steel faces surface crack risk during heating process. The surface carck can further cause to edge crack of the 09CuPCrNi-A weather resistant steel plates.

In order to improve the situation, high temperature heating and fast firing become essential. That can accelerate the improvement speed of heating temperature, and prevent excessive oxidation, reduce the grain boundary and the slab surface enrichment of Cu. As as result, it can avoid the edge crack of TB/T1979 09CuPCrNi-A weather resistant steel plates during rolling process, and reduce the heating temperature appropriately. The heating temperature of 09CuPCrNi-A weatherproof steel billets is 1160~1210 ℃, and the heating time should be no less than 80 min.

TB/T1979 09CuPCrNi-A weather resistant steel plates have high hardness, so its rolling thickness is always thinner. Large rolling force and rolling current of steel mill is easy to cause accidents in the rolling process. The medium heavy 09CuPCrNi-A weather resistant steel plates billets are usually 26~29 mm in thickness.

After production of TB/T1979 09CuPCrNi-A weather resistant steel, the steel need water cooling accordingly.