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Cite this article:
. . Acta Metall Sin, 2007, 43(10): 1048-1052 .
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Abstract According to the characteristic skin effect and proximity effect of high-frequency current, author himself manufactured a set of high-frequency current heating on-line/roll-bonding device by which the preparation technology of stainless steel/carbon steel cladding strip was studied. The main parameter of high-frequency current was determined according to the results of simulation of temperature field, analyzed the effect of high-frequency current heating on-line process on the microstructure and properties of stainless steel/carbon steel cladding strip by comparing the contrast experiments of general hot rolling bonding. The results showed that the stainless steel/carbon steel cladding strip with high properties can be prepared by the high-frequency current heating on-line process with the reduction rate of 25~30%, and the work-hardening of cladding strip is low, so it can avoid brittle ”carbon-poor layer” occurring on the interface of general hot-rolled cladding strip after high temperature annealing, and the elongation of cladding strip can exceed 40% after annealing. The oxidation problem of base metal under all the stages was solved under high-frequency current heating on-line process, and there was little oxidation on the surface of stainless steel. The distribution of temperature on zone of heating is reasonable on this technology, so it has the predominant characteristic of quick heating and high heat efficiency.
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Received: 22 November 2006
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