2232 口広げ試験における鋼管の変形と評価(S31-2 最新のチューブフォーミングとその動向(2),S31 最新のチューブフォーミングとその動向)

概要

論文の詳細を見る
In this study, a flaring test is carried out to evaluate circumferential ductility and deformation behavior of eight steel pipes. Steel pipes used in the experiment are produced in different pipe sizes and manufacturing conditions, and provided from steel pipe makers. A flaring experimental setup is used with a cylindrical guide to prevent cylindrical buckling and ensure a rupture at the end of pipe. The flaring limit is classified into three categories, as-rolled, as-rolled/normalized and cold drawn/normalized in these steel pipes. In case of as-rolled/normalized pipe, a weld line of the flared cone part does not deform enough and the shape remains like an "ear" of drawn cup. Wall thickness distribution and multiple necking of the flared part are discussed in detail.
社団法人日本機械学会の論文
2005-09-18