Controlling method of bonding pass rolling of aluminum composite panel coarse rolling machine

Abstract

The invention provides a controlling method of bonding pass rolling of an aluminum composite panel coarse rolling machine, and belongs to the technical field of metal pressure processing. The method comprises the steps that a roll gap of the rolling machine is opened in the first pass of the bonding rolling of the aluminum composite panel coarse rolling machine, a to-be-rolled aluminum ingot is conveyed to the rolling machine to allow the head of the aluminum ingot to enter the roll gap of the rolling machine, the roll gap of the rolling machine is pressed downwards to generate the rolling force with the capacity of 100 tons, the rolling of the first pass is completed in the manner of constant rolling force, the average value of the roll gap of the rolling machine is computed in the rolling process of the bonding pass, and the roll gap of the rolling machine in the next bonding pass is reduced by one adjusting unit delta s on the basis of the roll gap average value computed in the current pass, the rolling of the pass is completed in a constant roll gap manner, and subsequent rolling is completed according to regular rolling procedures after the rolling of the bonding pass is completed. The method has the advantages that the releasing of a composite layer and a substrate core layer due to excessively high bonding pass rolled member deformation in the composite panel rolling process is significantly reduced, and therefore the rolling successful rate of the composite panel is improved.

Description

technical field [0001] The invention relates to the technical field of metal pressure processing, in particular to a method for controlling bonding pass rolling of an aluminum composite plate rough rolling mill. Background technique [0002] Composite board refers to covering another layer or layers of metal plates on one layer of metal plates to achieve the effect of saving resources and reducing costs without reducing the use effect (anti-corrosion performance, mechanical strength, etc.). Aluminum composite plate rolling is a relatively complicated process. Firstly, the composite layer material and the substrate core material are simply welded together, and then the welded aluminum ingot is loaded into the heating furnace to be heated to the rolling temperature. The aluminum ingot passes through After multi-pass reversible rolling in the roughing mill, the composite plate product is finally rolled. Due to the different chemical composition and characteristics of the subst...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for controlling the bonded pass rolling of an aluminum composite plate roughing mill. The first pass of the method is rolling with a constant rolling force to extrude the composite layer and the core layer of the substrate. The air between the layers is eliminated, and then the roll gap is reduced by Δs for each pass for bonding rolling. This method can better bond the composite layer and the substrate core layer together, effectively reducing the The detachment of the composite layer and the core layer of the substrate caused by too much deformation of the rolled piece in each pass

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