Lightweight aluminum coated sheet strip and production method thereof

Abstract

The invention discloses a lightweight aluminum coated sheet strip and a production method thereof. The lightweight aluminum coated sheet strip is of an aluminum strip-steel strip composite structure.The steel strip comprises, by weight, 0.04-0.08% of C, greater than 0 and less than or equal to 0.005% of Si, 0.9-1.8% of Mn, less than or equal to 0.015% of P, less than or equal to 0.005% of S, lessthan or equal to 0.005% of Al, 0.0062-0.02% of N, 0.006-0.05% of O, 0.002-0.004% of Ca, 0.01-0.03% of Ti, 0.01-0.03% of Nb and the balance Fe and inevitable impurities, wherein the sum of O and N isgreater than or equal to 0.013%, and 0.5<=(O+N) / (P+S)<=5. According to the aluminum coated sheet strip, the yield strength is 400 MPa or above, the tensile strength is 500-800 MPa, meanwhile, the elongation A50% is 18% or above, thus, the aluminum coated sheet strip has the strength of steel, the properties such as good plasticity, colding bending, stamping and the like and the characteristics ofcorrosion resistance, radiating performance and attractive appearance of aluminum, and can be used for production of radiators, radiating fins and wheels, and lightweight design can be achieved.

Description

technical field [0001] The invention relates to a lightweight aluminum-clad strip and its production method. The aluminum-clad strip not only has the strength of steel, but also has good corrosion resistance, heat dissipation effect and excellent cold stamping performance, and can be used for wheels, radiator parts and The manufacture of the corrosion-resistant box belongs to the field of low-alloy steel manufacture. Background technique [0002] With the development of technology and economy, the performance requirements of metal materials are getting higher and higher, and it is often difficult for a single composition of metal materials to meet the performance requirements of multiple aspects in the actual use process at the same time. Selecting two or more metal materials and using various processes to make composite panels can meet special comprehensive performance requirements. Aluminum-clad steel is a composite strip with aluminum on the surface and steel on the core...

AI Technical Summary

Problems solved by technology

Chinese Patent Publication No. CN104451401A discloses "A Wheel Steel for Wheels and Its Preparation Method", which introduces a steel plate for wheels with different strength levels, but does not solve the heat dissipation problem of the wheels

[0006] "Aluminum-steel / aluminum-steel-aluminum composite metal plate and its manufacturing method" disclosed in Chinese Patent Publication No. CN101748853A uses adhesives to realize the composite of steel and aluminum, and the composite strength is low

[0007] Chinese Patent Publication No. CN102019727 discloses "aluminum-coated steel strip for cooler and its preparation method, steel strip and aluminum alloy strip used therein", which mainly relates to aluminum-coated steel strip for heat dissipation and substrate used therein, but the strength is relatively high. Low, cannot be used for the production of structural parts that bear a certain load

[0008] In addition, "Cu / Al clad material with high strength and interfacial reliability through alloying, and the method for manufacturing the same" disclosed in Korean patent KR101362328 (B1) also only involves the production process of the copper-aluminum composite strip, not including the substrate used Composition performance, etc.

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