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A study on the applicability of newly developed stainless steel for weight reduction of carbody of intermodal tram
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 Title & Authors
A study on the applicability of newly developed stainless steel for weight reduction of carbody of intermodal tram
Seo, Sung-il; Kim, Jeong-guk; Jung, Hyun-seung;
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 Abstract
The newly developed super ductile duplex stainless steel (SDSS) has good strength and ductility, and it can be used to reduce weight and improve the fabrication efficiency of a carbody of a rolling stock. In this study, spot weldability tests were conducted to take advantage of SDDSS in a carbody for an intermodal tram. Specimens of various thickness (0.4 to 5.0 mm) were prepared to find the proper welding conditions, and tensile load tests were conducted to evaluate the tensile-shear strength of spot welded joints. Then, nugget diameters were measured to verify the quality. The tensile-shear strength was found to be proportional to the heat parameter. It was verified that the tensile-shear strengths and nugget sizes of the joints satisfy the standard requirements. The overall weldability tests confirmed that SDDSS can be used effectively for the carbody of an intermodal tram.
 Keywords
Carbody;Nugget Diameter;Spot Welding;Super Ductile Duplex Stainless Steel;Tensile-shear strength;Tram;Weight reduction;
 Language
Korean
 Cited by
 References
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