Double-roller casting rolling-hot continuous rolling method and equipment

Abstract

The invention provides a method and device for double-roller cast rolling-thermal tandem rolling, which are a method and device for producing aluminum and aluminum alloy plate blank. By using the method, thick cast rolling plate blank can be produced, and coiled material with quality corresponding to that of thermal rolling plate is produced by large rolling amount of thermal rolling, transmitting and coiling. The invention provides a method and device for producing aluminum and aluminum alloy coiled material with high efficiency and greatly improved property by modification aiming at shortcoming of limited cooling space and cooling intensity of the double-roller cast rolling mill in prior art. The invented device enlarges the cast rolling space of the cast rolling mill in prior art with 1.8-4.0 times, enlarges the roller gap thereof with 1.5-2.5 times, enhances the cast rolling speed thereof with 1.5-3.0 times, cast rolls the casting blank continuously with a temperature ranging from 310 DEC C to 510 DEG C, and the integral processing amount is controlled in the range of 40-85, thereby the yield, size accuracy and mechanical property are greatly improved, and the product range is enlarged. The invented device is: inclination angle adjustable off-centering reducing double-roller cast rolling-thermal tandem rolling- cutting-coiling production line.

Description

technical field [0001] The present invention relates to a method and equipment for continuous production of metal slabs by twin-roll casting and hot rolling, and more specifically, relates to a method and equipment for producing metal slabs by twin-roll casting and hot rolling with improved on-line rolling conditions The method, and the eccentric reducing twin-roll casting-rolling-hot rolling-shearing-coiling production line used in the method. [0002] The invention relates to a production method of aluminum and aluminum alloy slabs. The slabs have relatively large hot-working deformation, and their properties are close to or reach those of hot-rolled slabs. It is produced by using the cast-rolled slab produced by this method and equipment as raw material, more specifically, it involves a thicker cast-rolled aluminum and aluminum alloy slab as raw material, and then heated at 301 ° C to 510 ° C In the case of continuous large reduction of hot rolling method. Background tec...

AI Technical Summary

Problems solved by technology

[0013] The current twin-roll aluminum plate continuous casting and rolling mills in operation in various countries in the world basically do not adopt the method of "aluminum strip (billet) casting-medium temperature continuous rolling method" disclosed in CN1258574, which is limited by the inherent characteristics of the twin-roll casting and rolling mill itself. Tandem hot rolling mill loses practical (economic) significance

As mentioned above, the existing casting-rolling machine has low speed and limited plate thickness. Adding hot continuous rolling will not help to increase production, but will increase equipment investment and reduce the reliability of casting-rolling machine operation.

The processing deformation rate of the casting-rolling machine itself has basically met the requirement of turning the plate into a fibrous structure, and the subsequent cold rolling and annealing processes fully meet this requirement. refinement and uniform grains) and mechanical strength are also of no great help

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