高強度熱延鋼板の自動車ホイールへの適用性(成形性)(<特集>高強度薄鋼板)

概要

論文の詳細を見る
Overall applicability of various types of high strength sheet steels to automotive wheels was investigated by means of conventional production tooling as well as laboratory forming and welding tests. Dual phase sheet steels, especially those of as hot rolled type, showed most hopeful potential in wheel discs forming because of their high workhardenability, good elongation and uniform dispersion of second phase. Special improvements in flash butt welding and roll forming conditions were necessary to make high strength sheet steels usable for the production of wheel rims and HSLA steels which contained Nb revealed comparatively stable quality in joints and HAZ of flash butt welds. Centrifugal cornering fatigue tests suggested that high strength sheet steel of 60 kgf/mm^2 tensile strength could be substituted for mild sheet steel in wheels with weight saving as high as 25%. Influences of alloying elements on various properties and performances of sheet steels for wheel were summarized and utility of dual phase sheet steels was also discussed.
社団法人日本鉄鋼協会の論文
1982-07-01