THIN PLATE MATERIAL AND METHOD FOR FORMING REMOVAL SCHEDULED PART THEREOF

PROBLEM TO BE SOLVED: To provide a thin plate material capable of causing a thin plate base material to hold a removal scheduled part with moderate holding power without forming an opening around the removal scheduled part and a method for forming the removal scheduled part.SOLUTION: A thin plate material 1 consisting of a metal thin plate base material 2 and having a removal scheduled part 3 includes: a coupling part 4 for coupling the thin plate base material 2 around the removal scheduled part 3 with a part of a periphery of the removal scheduled part 3; and a half blanking part 5 constituted by performing half blanking processing to a part along a periphery 3a except a coupled part of the removal scheduled part 3 with the coupling part 4. A method for forming the removal scheduled part forms the coupling part 4 for coupling the thin plate base material 2 around the removal scheduled part 3 with a part of the periphery of the removal scheduled part 3 at a part of the part along the periphery and forms the half blanking part 5 constituted by performing the half blanking processing at the part along the periphery 3a except the coupled part of the removal scheduled part 3 with the coupling part 4 by performing the half blanking processing to the part except a part at the part along the periphery of the removal scheduled part 3.SELECTED DRAWING: Figure 1 【課題】除去予定部の周囲に開口を形成することなく、除去予定部を適度な保持力で薄板母材に保持させることが可能な薄板材及びその除去予定部形成方法を提供する。【解決手段】金属製の薄板母材２からなり除去予定部３を有する薄板材１は、除去予定部３の周囲の薄板母材２と除去予定部３の外縁の一部とを連結する連結部４と、除去予定部３の連結部４との連結箇所以外の外縁３ａに沿う部分に半抜き加工が施されてなる半抜き部５と、を含む。除去予定部形成方法は、除去予定部３の外縁に沿う部分にてその一部以外の箇所を半抜き加工して、上記外縁に沿う部分の一部に除去予定部３の周囲の薄板母材２と除去予定部３の外縁の一部とを連結する連結部４を形成すると共に、除去予定部３の連結部４との連結箇所以外の外縁３ａに沿う部分に半抜き加工されてなる半抜き部５を形成する。【選択図】図１