Process for producing high strength aluminum-magnesium-silicon alloy by cold plastic working

摘要

1. The technical field to which the invention described in the claims belongs;The present invention relates to a method of manufacturing a high-strength aluminum-magnesium-silicon alloy sheet for high strength forming for automobile bodies by cold plastic working.;2. Technical challenges to be solved by the invention;There is a problem that the maximum age hardening effect can not be obtained in an alloy sheet only by an effective baking hardening treatment which improves the characteristics of the paint for painting.;3. The point of the solution of the invention;Mg, Si, and alloying elements added with Mn and Zr elements are subjected to a homogenizing process and a cold-plasticizing process after the solution-treating process.;4. Important Uses of the Invention;It is possible to obtain the maximum age hardening effect of the aluminum alloy incidentally through the hardening treatment, so that it is possible to produce an alloy sheet material of high strength and high strength comparable to that of a steel sheet as a conventional body material, to stabilize the mechanical properties of the material, Which is an excellent effect for lightening the weight of the product.