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Light Cold-Rolled Flat

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Cold rolled steel is essentially hot rolled steel that has had further processing. The steel is processed further in cold reduction mills, where the material is cooled (at room temperature) followed by annealing and/or tempers rolling. This process will produce steel with closer dimensional tolerances and a wider range of surface finishes. The term Cold Rolled is mistakenly used on all products, when actually the product name refers to the rolling of flat rolled sheet and coil products.
Cold rolling increases the strength and hardness and decreases ductility of steel by rolling it at ambient temperature (or below its recrystallization temperature). In addition to improvement of mechanical properties, the cold rolling produces steel plate/sheet of the desired physical dimensions. Steel may be annealed subsequent to the cold rolling process to restore the original mechanical attributes. Even with multiple passes through rollers, cold rolling is more limited in its ability to effect dimensional changes (versus hot rolling) because of the increased hardness and decreased ductility.
When referring to bar products, the term used is “cold finishing”, which usually consists of cold drawing and/or turning, grinding and polishing. This process results in higher yield points and has four main advantages:
1.Cold drawing increases the yield and tensile strengths, often eliminating further costly thermal treatments.
2.Turning gets rid of surface imperfections.
3.Grinding narrows the original size tolerance range.
4.Polishing improves surface finish.
CHUANGHUI is well-known as one of the most professional light cold-rolled flat manufacturers and suppliers in China for our high-quality products and good service. Please feel free to buy bulk light cold-rolled flat made in China here from our factory.