Continuous hot rolling process for making thin steel strip

Details Continuous hot rolling process for making thin steel strip Continuous hot rolling process for making thin steel strip

1988-04-12

1990-06-26

Bray, W. Donald

Metal deforming

By use of roller or roller-like tool-element

With carrier for roller-couple or tool-couple

72 13, 72 16, B21B 3120

Patent

active

049361325

ABSTRACT:
This invention provides a continuous hot rolling process for making thin strip in which it is possible to roll strips at high rolling speeds required to keep a finisher delivery temperature equal to or higher than an Ar.sub.3 transformation temperature. The gist of the present invention resides in a continuous hot rolling process in which the rolling speed of a final finishing mill is kept constant or slightly increased until the leading end of rolled strip travels from the final finishing mill to a down coiler which process comprises: rolling a predetermined length of the leading end portion of a stock being rolled in accordance with a strip thickness greater than a finished thickness; then reducing the strip thickness to the finished thickness by gauge alteration in rolling; and subsequently rolling the following portion.

REFERENCES:
patent: 3762195 (1973-10-01), Kitanosono et al.
patent: 4593551 (1986-06-01), Otto, Jr. et al.
patent: 4608850 (1986-09-01), Ballantyne et al.
patent: 4614098 (1986-09-01), Kotera

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