論文
プレス成形における薄鋼板の摺動挙動および摺動試験条件の最適化
2017 年 58 巻 672 号 p. 41-46
詳細
2017 年 58 巻 672 号 p. 41-46
The typical sliding conditions at the fracture-risk positions in press forming of automotive parts were identified by FE analysis and laboratory-scale sliding tests. The investigated sliding conditions fall into three categories：the inflow sections of a steel sheet （group A）, the punch shoulders in drawing （group B）, and the stretch sections （group C） . The frictional properties of group A and group B could be evaluated by measurement of the dynamic coefficient of friction in the flat sliding tests under a high contact pressure and at low sliding speed in each group area. The frictional properties of group C could be evaluated by the static coefficient of friction, which is measured as the primary peak in a coefficient of friction – stroke curve under the specific sliding test conditions （contact pressure：7MPa, sliding speed：10mm/min, tool length：10mm） .
