Method for producing a molded sheet metal part from an as-rolled, non-hardenable aluminum alloy

Abstract

Method for producing an open molded sheet metal part from a non-hardenable aluminum alloy that has the following steps: a) a sheet is prepared that is made of a non-hardenable aluminum alloy, the temper of which is H12, H14, H16, H18, H19, H22, H24, H26, H28, H32, H34, H36 or H38 according to European Standard EN 515:1993 and that in addition to aluminum includes at least magnesium and where necessary manganese; b) the aluminum is heated at least locally to a temperature between 200° C. and 350° C. within a period of 1 to 60 seconds; c) the heated sheet is placed in a cold forming die of a forming press and the sheet is formed, creating a molded sheet metal part.

1 . Method for producing an open molded sheet metal part from an as-rolled, non-hardenable aluminum alloy that has the following steps:
 a) preparing a sheet that is made of a non-hardenable aluminum alloy, the temper of which is H12, H14, H16, H18, H19, H22, H24, H26, H28, H32, H34, H36 or H38 according to European Standard EN 515:1993 and that in addition to aluminum includes at least magnesium and where necessary manganese;   b) heating the aluminum at least locally to a temperature between 200° C. and 350° C. within a period of 1 to 60 seconds;   c) placing the heated sheet in a cold forming die of a forming press and forming the sheet, creating a molded sheet metal part.   
     
     
         2 . Method in accordance with  claim 1 , characterized in that the sheet is heated to a temperature between 200° C. and 240° C. in a period of 1 to 10 seconds. 
     
     
         3 . Method in accordance with  claim 2 , characterized in that the sheet is heated to different temperatures by area prior to forming. 
     
     
         4 . Method in accordance with  claim 3 , characterized in that the sheet is heated resistively, conductively, or capacitively. 
     
     
         5 . Method in accordance with  claim 3 , characterized in that areas of the sheet are heated for different lengths of time. 
     
     
         6 . Method in accordance with  claim 5 , characterized in that the sheet is heated resistively, conductively, or capacitively. 
     
     
         7 . Method in accordance with  claim 6 , characterized in that the forming die has a cavity that has at least one area that is heated. 
     
     
         8 . Method in accordance with  claim 2 , characterized in that areas of the sheet are heated for different lengths of time. 
     
     
         9 . Method in accordance with  claim 8 , characterized in that the sheet is heated resistively, conductively, or capacitively. 
     
     
         10 . Method in accordance with  claim 2 , characterized in that the sheet is heated resistively, conductively, or capacitively. 
     
     
         11 . Method in accordance with  claim 2 , characterized in that the forming die has a cavity with at least one area that is heated. 
     
     
         12 . Method in accordance with claim I, characterized in that the sheet is heated to different temperatures by area prior to forming. 
     
     
         13 . Method in accordance with  claim 12 , characterized in that areas of the sheet are heated for different lengths of time. 
     
     
         14 . Method in accordance with  claim 13 , characterized in that the sheet is heated resistively, conductively, or capacitively. 
     
     
         15 . Method in accordance with  claim 12 , characterized in that the sheet is heated resistively, conductively, or capacitively. 
     
     
         16 . Method in accordance with  claim 12 , characterized in that the forming die has a cavity with at least one area that is heated. 
     
     
         17 . Method in accordance with  claim 1 , characterized in that areas of the sheet are heated for different lengths of time. 
     
     
         18 . Method in accordance with  claim 17 , characterized in that the sheet is heated resistively, conductively, or capacitively. 
     
     
         19 . Method in accordance with  claim 1 , characterized in that the sheet is heated resistively, conductively, or capacitively. 
     
     
         20 . Method in accordance with  claim 1 , characterized in that the forming die has a cavity with at least one area that is heated.