Optimal Solution for Cracking Defects of Automobile Threshold Beam 6082 Aluminum Profile
6082 aluminum alloy thin-wall multi-cavity complex threshold beam is difficult to form,the inner cavity wall is thin and difficult to control,and the inner cavity is easy to crack,poor welding and other problems,resulting in low yield and high production cost.The results show that the third alloy composition and extrusion at the bar temperature of 500 to 520℃and the speed of 1.5 to 1.6 m/min can solve the problem of internal rib cracking and poor welding,but the mechanical properties of aluminum profiles are still low,and the mechanical properties can be improved by changing the quenching method and extrusion along the discharge direction.The quenching method of increasing water mist can not only solve the problem of poor welding and unqualified size,but also meet the mechanical property requirements of the workpiece.
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