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shelves, the shelves' is the difference between cold rolled steel and hot rolled steel hot-rolled steel after high temperature heating of rolling steel, its strength is not high, but enough to meet our use, its plasticity, good weldability so we compare common;
Cold rolling is ordinary hot-rolled steel after strong drawing more than stage of strain hardening steel, its strength is very high, but the toughness and weldability poor, more hard and brittle!
Before or during the process of hot rolling is rolling rolling materials have to be heated.
Typically heated to above the recrystallization temperature of rolling.
The ironmaking and steelmaking and continuous casting (
Or molded)
- hot rolled (
Hot rolled products)
- cold rolled (
The cold rolled product)
。
Cold rolled steel is steel after cold rolling production.
Cold rolling is at room temperature will further rolling thin steel plate thickness of steel plate is target.
More accurate compared to hot rolled steel plate, cold rolled steel sheet thickness, and surface smooth, beautiful, at the same time also has a variety of superior mechanical properties, especially processability.
Hot rolled steel strength, good extension, color is not bright appearance.
Cold rolled steel high strength, high hardness, surface brightness.
In addition to the size factor, general can also distinguish between color and quality from the surface, there are obvious oxidation color is hot rolled steel, the surface is bright and clean bright is cold rolled steel, hard to depict the surface can also be used to distinguish simple, compare easy to scratch is hot rolled steel, not easy to scratch is cold rolled steel (
Some higher hardness)
。
Shelves,
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