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Cold-formed steel (CFS) is the common term for steel products shaped by cold-working processes carried out near room temperature, such as rolling, pressing, stamping, bending, etc. Stock bars and sheets of cold-rolled steel (CRS) are commonly used in all areas of manufacturing.
Cold-rolled sheets and strips come in various conditions: full-hard, half-hard, quarter-hard, and skin-rolled. Full-hard rolling reduces the thickness by 50%, while the others involve less of a reduction. Cold rolled steel is then annealed to induce ductility in the cold rolled steel which is simply known as a Cold Rolled and Close Annealed.
Blackplate is made of non-tinned [2] iron or steel and is annealed on open flames or in an annealing box. [3] Its dark appearance is caused by its reaction with the surrounding air. [ 3 ] During warm rolling, blackplate can be manufactured to thicknesses of 1.5 mm or more. [ 4 ]
The company is Ukraine's only manufacturer of cold-rolled sheets, used in car manufacturing, as well as tinplates and polished stainless and alloyed steel. Zaporizhstal is located in the city of Zaporizhzhia , in a region with the highest per capita electricity output in Ukraine, close to raw material suppliers and steel consumers (pipe and ...
Cold-rolled non-grain-oriented steel is often abbreviated to CRNGO. Grain-oriented electrical steel usually has a silicon level of 3% (Si:11Fe). It is processed in such a way that the optimal properties are developed in the rolling direction, due to a tight control (proposed by Norman P. Goss ) of the crystal orientation relative to the sheet.
Tornio Works produces hot rolled and cold rolled coils and sheets cut from coil, with an annual output of one million tonnes. The site consists of ferrochrome smelting, two steel-melting shops, a hot rolling mill and two cold rolling mills. The steel works were built in 1975–1976.
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