Process Research on Reducing the Flatness of 6061 Aluminium Alloy Wide Ribbed Plate Profiles
The influence of high temperature on-line shaping tooling and profiling stretching tooling on the flatness of 6061 alumini-um alloy extruded wide ribbed plate profiles was studied.The results show that the flatness of 6061 aluminium alloy extruded wide ribbed plate profiles can be reduced effectively by on-line shaping at high temperature and the use of profiling stretching pads for stretching and straightening.In contrast,the effect of high temperature on-line shaping on reducing the flatness of wide ribbed profiles is more obvious than that of using the profiling stretching pad.Taking advantage of the characteristics of low hardness and easy straight-ening,high temperature on-line shaping applys external forces on the profile at high temperature for on-line shaping to achieve good flatness.At the same time,combining with profiling stretching pads for stretching and straightening,the 6061 aluminium alloy extrud-ed wide ribbed plate profiles produced can meet customer requirements for flatness.
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