Manufacturing method of three-layer metal clad steel plate

Abstract

The invention provides a manufacturing method of a three-layer metal clad steel plate. The manufacturing method comprises the following specific steps: measuring the magnetic content; conducting surface milling and polishing pretreatment on composite blank steel plates; daubing an adhesive and stacking and bonding the composite blank steel plates; conducting welding and sealing of the clad steel plate through spot welding in combination with vacuum pumping welding; heating the welded clad steel plate in three stages of low-temperature heating, medium-temperature heating and high-temperature heating by a soaking pit furnace; removing an oxide skin on the surface of the discharged clad steel plate through a phosphorus removal box, and then respectively performing rough rolling and finish rolling; straightening the rolled clad steel plate; and stacking the delivered clad steel plate for slow cooling, and performing flaw detection. The method provided by the invention can manufacture high-performance and high value-added clad steel plates without environmental pollution, is high in safety coefficient, and belongs to a green and environment-friendly process.

Description

technical field [0001] The invention relates to a method for manufacturing a three-layer metal composite steel plate, belonging to the technical field of metal composite material manufacturing. Background technique [0002] Metal composite panels refer to the combination of two or more metal panels through layer contact to achieve the effect of saving resources and reducing costs without reducing the use effect. The research on metal composite panels was first started by the United States in 1860. After more than 100 years of development, the production technology of metal composite panels has been continuously improved, and the production methods are also increasing. In 1986, the hot rolling method and thick plate were developed. rolling method. In 1990, the production method of continuous hot-rolled coils was developed, mainly referring to the production of thin plates. Metal composite panels have excellent combination properties and are widely used in chemical industry,...

AI Technical Summary

Problems solved by technology

The Chinese patent with the application number CN201110347172.2 discloses a composite steel plate and its manufacturing method, specifically disclosing that the manufacturing method of the composite steel plate includes the following steps: combining the base plate and the double plate; grinding the surface roughness value of the bonded surface of the base plate Not greater than Ra 25μm; explosive welding explosives are placed on the double plate to ignite and detonate, and explosively welded together; surface repair welding is performed on unwelded points; heat treatment is kept at 900-920°C for 15-20min; the composite steel plate is cut to the composite The finished size of the steel plate; the performance test shall be carried out in accordance with GB / T6396-2008 for the mechanical performance test of the composite steel plate; the ultrasonic flaw detection shall be carried out in accordance with NB / T47002-2009 for 100% flaw detection inspection of the composite plate; the surface roughness value of the polished composite steel plate shall not be greater than Ra 2μm , the clad steel plate manufactured by the method of this invention has a long corrosion-resistant service life, but the safety factor of the explosive cladding method is low, and the environmental pollution is serious. Limitations, lack of competitiveness in the production of bimetallic composite panels with thin cladding and large panel dimensions

Explosion-rolling composite method, on the basis of the explosive composite method, the clad plate is rolled, which makes full use of the advantages of the explosive process, and at the same time improves the surface quality and dimensional accuracy of the clad plate. The rolling process includes hot rolling and cold rolling Two steps of rolling, hot rolling is mainly to obtain the required plate thickness, the total processing amount is relatively large, cold rolling is mainly to obtain the final accurate plate thickness size, the total processing amount is small, through the explosion-rolling composite method, in To a certain extent, it can make up for the shortcomings of using the explosion method alone, but the safety and environmental pollution problems it brings have not been effectively resolved.

Images