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Hot Rolled Steel Is More Commonly Used
May 31, 2017

Hot Rolled Steel is made of high-temperature heating and rolling of steel, hot-rolled products with high strength, good toughness, easy processing and good weldability and other excellent performance, which is widely used in ships, cars, bridges, construction , Machinery, pressure vessels and other manufacturing industries. Is heated by the heating (heating temperature above the recrystallization temperature, generally above the critical point) after the rolling of the steel plate.

Hot Rolled Steel is heated by high-temperature rolling from the steel, its strength is not very high, but enough to meet our use, its plasticity, good weldability, so we are more commonly used; cold rolled steel is ordinary hot rolling Steel through the strong pull beyond the strain hardening stage of the steel, its strength is high, but toughness, poor solderability, relatively hard, crisp!

Ironmaking → steelmaking → continuous casting (or molding) → hot rolling (hot rolling products) → cold rolling (cold rolling products)

Hot rolling is the process of rolling or rolling before the need for heating materials. Generally heated to the recrystallization temperature above the rolling. Such as: 1000 degrees or more, hot rolling is processed at high temperatures. So that the internal steel recrystallization. Make it better material But hot rolling does not change the structural properties of the metal.

Hot rolled products Features: Hot rolled products with high strength, good toughness, easy processing and good weldability and other excellent performance, which is widely used in ships, automobiles, bridges, construction, machinery, pressure vessels and other manufacturing industries.

1, Hot Rolled Steel: heated (heating temperature above the recrystallization temperature, generally above the critical point) after the rolling of the steel plate.

Cold rolled steel: rolled steel sheet at room temperature (strictly speaking, below the recrystallization temperature) without heating.

2, Hot Rolled Steel: low strength, good extension, the appearance of color is not bright.

Cold rolled steel: high strength, high hardness, bright surface.