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Tuesday, 12 November 2013

Hot-Working Processes - Hot-rolling


Hot-rolling
Points : Hot-rolling, Definition Definition Hot-rolling is universally employed in the reduction of large steel ingots to sections, strip, sheet and rod of various sizes. In fact the only conditions under which cold-work is applied to steel are when the section is too small to retain its heat, or when a superior finish is required in the product.


A steel-rolling shop consists of a powerful two-high reversing mill to ‘breakdown’ the white-hot ingots, followed by trains of rolls which will be either plain or grooved according to the type of product being manufactured. Hot-rolling is similarly applied to most non-ferrous alloys in the initial breaking-down stages, but the finishing operations are more likely to involve cold work.

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