What is the meaning of C hot strip material, B material is how to distinguish between
1) cold plate used in cold rolling surface nonscale, good quality. The hot surface oxide thickness of hot rolled steel, have difference.2) hot-rolled steel plate toughness and surface roughness is bad, the price is low, and cold rolled plate of good extensibility, toughness, but the price is more expensive.3) rolling is divided into cold-rolled and hot-rolled steel plates, with recrystallization temperature as the regional division.4) cold rolling: cold rolling is generally used to produce strip, and its rolling speed is higher. Hot rolled steel sheet: the temperature of hot rolling is similar to that of forging.
Hot rolled steel plate surface is plated black brown, plating cold rolled plate surface is gray, after plating from the surface smoothness to distinguish, lengzha board smoothness is higher than that of hot rolled steel plate.
Due to work hardening of cold rolled steel plate, a certain degree of toughness is low, but can yield better than that used to cold spring piece parts, at the same time as the yield point is close to the tensile strength, so the use of risk is not predictable, prone to accidents in the load exceeds the allowable load.
