Aluminum-coated plate strip with excellent heat dissipating effect and production method thereof

Abstract

The invention provides an aluminum-coated plate strip with an excellent heat dissipating effect and a production method thereof. The aluminum-coated plate strip is of a composite structure of an aluminum strip and a steel strip, and the steel strip comprises the components of, by weight, 0.005-0.03% of C, larger than 0 and smaller than or equal to 0.005% of Si, 0.2-0.6% of M, smaller than and equal to 0.015% of P, smaller than and equal to 0.005% of S, smaller than and equal to 0.005% of Al, 0.0062-0.02% of N, 0.006-0.05% of O and the balance Fe and inescapable impurities, wherein the conditions of O+N>=0.013% and 0.5<=(O+N) / (P+S)<=5 are met at the same time. The aluminum-coated plate strip has the strength of steel, is 200-320 MPa in yield strength and larger than or equal to 340 MPa in tensile strength, has the good plasticity and performance of cold bending, stamping machining and the like, has the characteristics of corrosion resistance, heat dissipation and beauty of aluminum, andcan be used for production of heat dissipating devices, heat dissipating pieces and wheels.

Description

technical field [0001] The invention relates to an aluminum-clad strip with excellent heat dissipation effect and its production method. The aluminum-clad strip not only has the strength of steel, but also has good corrosion resistance and easy heat dissipation characteristics of aluminum, and at the same time, the clad strip also has excellent cold stamping performance , can be used in the production of wheels, radiator parts and corrosion-resistant boxes. 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 alum...

AI Technical Summary

Problems solved by technology

Chinese Patent Publication No. CN101748853A discloses "a kind of aluminum-steel / aluminum-steel-aluminum clad metal sheet and its manufacturing method", which 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

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