Process Parameter with High Expansion Rate of SUS304 Tube Hydroforming
Abstract Stainless steel has been applied more and more extensively because it has good corrosion resistance and its surface is glossy, like a mirror after polishing. Thus, it is used in high-price pieces or quality goods. In this paper, the SUS 304 has been used to form a product with high expansion rate, via tube hydroforming technology, applying different feeding of two ends with different inner pressure to complete the procedure. The effects of different loading paths on product quality are discussed in this paper. Finally, by reasonable feeding with pressure parameters and a preforming process, a product with high expansion rate has been realized. The diameter-to-thickness ratio is 110, with an expansion rate of about 45%. The deviation of results from the experiment and simulation are also discussed in this paper. The results of this study could provide significant information to benefit industry.