自動車車体部品のプレス成形における材質や作業条件の状態図への影響

概要

論文の詳細を見る
In the press forming of autobody parts with various shapes and dimentions, the change in pattern on the deformation constitutional diagram was observed to evaluate the strain distribution in a longitudinal section of a fracture region or a nearly critical portion. Comparison of cylindrical formation with the press forming of autobody parts was made through the effect of steel sheet grade, blank holder pressure and lubrication on the strain distribution. Principally, similar behaviors were found between these two kinds of press forming, as shown in the following results. 1) The greater the blank holder pressure and the more inappropriate the lubricating condition, the larger the difference in the strain behaviors among steel sheet grades is. 2) The strain on the stretching side becomes smaller in the order, rimmed steel, OCA and killed steel. 3) As for the shrinkage flange strain, the order of magnitude is reverse to that in 2) ; it is the largest in killed steel and the smallest in rimmed steel.
社団法人日本鉄鋼協会の論文
1972-09-01