Properties and characteristics of aluminum stamping parts

In recent years, the proportion of aluminum stamping parts for high-end passenger cars produced by stamping manufacturers has gradually increased. Taking FAW-Volkswagen Audi models as an example, the Audi series produced by the Changchun base include the front and rear covers of the Audi Q3, the front and rear covers of the old Audi Q5, The front and rear covers of the new Audi Q5, the old Audi A6L (C7) four doors, the new Audi A6L (C8) front and rear covers, four doors, and fenders all use aluminum stamping parts. The new A6L has 13 stamping covers visible on the outside. Among them, the number of aluminum parts reached 9, accounting for 70%, compared with 31% of the old models. Compared with steel parts in automobile covering parts, aluminum parts have the advantages of light weight, fast heat dissipation, good sound absorption performance, and no corrosion. At present, most of the aluminum alloy plates used for stamping parts are 6000 series aluminum alloys. Due to the different materials of aluminum parts and steel parts, in the two typical processes of stamping production, the problem of necking and cracking in the forming process and the separation process The problem of material scraps has a more prominent impact. The material chip problem of the aluminum parts of the new mold is as high as 20 minutes per thousand strokes, which is 5 times more than that of ordinary steel parts. The frequency of shrinkage and cracking of aluminum parts of the same variety is 3 times higher than that of steel parts. In the production process of aluminum stamping parts, the high repair rate, high scrap rate, and high downtime are still industry problems. At present, the main pain points in production are concentrated in the two major aspects of necking and cracking and material scraps. Combining the production and maintenance experience of about 50 aluminum stamping parts in the past ten years, aiming at the common shrinkage and cracking problems and chipping problems in the production of aluminum stamping parts, from the aspects of sheet metal, mold, stamping equipment, digital technology, system management, etc. We already have a lot of experience and measures; the article recommends: metal stamping parts-the application and characteristics of the spring sheet Previous post: The role of double-action drawing presses for drawing stamping parts