Method for span-based centralized annealing of multiple aluminum coil annealing furnaces in aluminum strip workshop

Abstract

The invention discloses a method for the span-based centralized annealing of multiple aluminum coil annealing furnaces in an aluminum strip workshop. Annealing furnaces N1, N2, N3, N4, ... and N10 are arranged abreast at an equal interval on the part, close to a B-span workshop, of any end of an A-span workshop, annealing furnaces N11, N12, N13, N14, ... and N20 are arranged abreast at an equal interval in the B-span workshop, a furnace door of the annealing furnace N1 is opposite to that of the annealing furnace N11, and so on. A first storage platform is arranged on the left side of the annealing furnace N1, a second storage platform is arranged on the left side of the annealing furnace N11, a combined charging skip on a plurality of rails is arranged in the B-span workshop, and is parallel to the furnace door of each annealing furnace. According to the method, the transportation capability is improved, the problem of scratches caused by the cross-span lifting of aluminum coils is reduced, the working efficiency and the yield are improved, the labor intensity and the production and operation cost are reduced, and the method is significant for the modern management of an aluminum strip workshop production organization.

Description

technical field [0001] The invention belongs to the technical field of process configuration of an aluminum strip workshop, in particular to a process method for annealing several aluminum coil annealing furnaces in an aluminum strip workshop in separate spans and centralized annealing. Background technique [0002] The production process of aluminum strip is roughly divided into: billet→cold initial rolling of aluminum strip→heat treatment→cold rolling→finishing and shearing→packaging→finished product and other processing procedures, among which heat treatment includes annealing in the middle of the product and annealing of the finished product, in the middle of the product Annealing is a production process to eliminate the work hardening of the strip during cold rolling and restore the plasticity of the aluminum strip; finished annealing is a production process to control the final product state and performance of the aluminum strip and eliminate the internal stress of the ...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned special equipment is an aluminum coil annealing furnace. Usually, several aluminum coil annealing furnaces are configured according to production needs. At the same time, several aluminum coil annealing furnaces are equipped with a storage table, a composite material car and a track for transporting aluminum coils, etc., according to the conventional Design, several aluminum coil annealing furnaces are arranged in separate spans with the cold rolling mill, and several aluminum coil annealing furnaces are arranged in a single row in the annealing span. During heat treatment, aluminum coils need to pass through a specially designed electric flatbed car. The aluminum strip coils that require heat treatment in the cold rolling process are first hoisted to the electric flat car by the crane, transported to the annealing bay by the electric flat car over the span for placement, and then hoisted by the crane to the material rack of the storage table. After the annealing furnace completes the annealing of the last batch of aluminum coils, the compound material trolley drags out the material rack with the material, and then runs along the track to the front of the annealing furnace, and pushes it into the annealing furnace together with the material rack and aluminum coils. After the heat treatment is completed The composite material car is pulled out together with the material rack and the aluminum coil, and then the aluminum coil is hoisted away by the crane and placed in the cooling area for cooling. At least 4 times of hoisting are required, especially when the aluminum coil is placed on the electric flatbed during cross-span transportation, it is easy to cause pressure on the outer surface of the aluminum coil, damage the aluminum coil and affect the yield of the aluminum coil, and the second annealing furnace is arranged in a single row More site space is required, and the trip of the composite car is longer, which is not conducive to the centralized control and management of the annealing furnace

Images