Forged Steel Roll - Steel Making Rolls
Forged steel roll can be divided into forged steel hot roll and forged steel cold roll. Forged steel hot roll is mainly used for hot rolling bloom and section steel rough roll, while forged steel cold roll is widely used as cold rolling work roll.
Due to the high quality of the cold-rolled sheet, especially the cold-rolled sheet is widely used in light industry, automobile, construction, railway, and other industries, in order to produce high-quality cold-rolled sheet, it is necessary to have high-quality cold-rolled work roll as a guarantee, which puts forward high requirements for the performance of cold-rolled work roll: the roll surface must have high and uniform hardness, so as to ensure the size of cold-rolled strip or steel plate The roller body has a certain depth of hardened layer and high accident resistance. In order to achieve these properties, the requirements for the original structure of roller material are very strict: first, pure metallurgical quality; second, the uniformity of structure.
High metallurgical quality means that the ingot of roll steel has a dense crystal, no serious segregation, no white spots, and the content of residual non-metallic inclusions in the steel is as low as possible. It is required that the microstructure of the roller in-service state is hidden needle m and fine carbon, and the carbide particle size is as small as possible (0.5-2 μ m), which is dispersed. At the same time, to ensure a certain depth of hardened layer, the increase of hardened layer depth can reduce the re quenching times of roller in use and greatly reduce the cost of roller.
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Laying Head of Wire Rod Mill
