MANUFACTURING METHOD OF MAGNESIUM ALLOY SHEET CLAD WITH ALUMINUM SHEET AND MAGNESIUM ALLOY SHEET MANUFACTURED THEREBY

摘要

A manufacturing method of a magnesium alloy sheet in which an aluminum sheet is clad and the magnesium alloy sheet manufactured thereby are provided to prevent defect of a product, and to simplify processes. A manufacturing method of a magnesium alloy sheet having superior corrosion resistance includes the following steps of: supplying an aluminum sheet to one side or both sides of two cooling rolls when magnesium molten metal is injected; cladding the aluminum sheet on the surface of the magnesium alloy sheet; and heat-treating the magnesium alloy sheet. The thickness of the aluminum sheet is 5mm or less. Temperature of the magnesium molten metal is 650~750‹C.