1.发明名称深冲用铝合金硬质板的制造法 2.专利请求范围本专利是将含Mg0.1～2.0％,Mn0.1～2.0％的铝合金按下述(1)～(5)项工序制造深冲用铝合金硬质板的方法。其中(2)(3)和(5)作为必要工序,(1(4)作为单用或合用工序。 (1) 铸锭在高于570℃的温度下处理3小时以上; 1. Title of the Invention METHOD FOR MANUFACTURING A RIGID ALUMINUM COMPOSITE RIGID PLATE 2. Patented Claims This patent discloses a method for producing an aluminum alloy hard plate for deep drawing, which comprises the following steps (1) to (5) ) Procedures for the manufacture of deep drawing aluminum alloy hard plate method. (2) (3) and (5) as essential processes, (1) (4) as single or combined processes: (1) ingots are treated at a temperature higher than 570 ° C for more than 3 hours;