Die material for press working

Abstract

Abstract PURPOSE:To prevent fouling of a die material, and to improve the wear resistance by constituting a part for contacting a member to be worked, of ceramics containing partially stabilized zirconia by prescribed weight % or more. CONSTITUTION:Ceramics are formed by compacting and sintering a raw material powder consisting of a partially stabilized zirconia powder, or this powder and other ceramic powder, to a prescribed shape. In this case, as for the ceramics, the raw material powder is adjusted so that the partially stabilized zirconia is contained by >=20wt%. Subsequently, the obtained ceramics are finished to prescribed dimension accuracy and dimension tolerance, and a contact part 2 to a material to be worked of a die material of a punch, etc. As for a partially stabilized zirconia sintered body, its strength and hardness are high, and also, an affinity to a metal is scarce, therefore, foulding of the die material is prevented, and also, its wear resistance is improved.

Inventors

• 👤 Yoichi Itakura
• 👤 板倉　洋一
• 👤 Masaaki Iwami
• 👤 岩見　正明
• 👤 Yoshihiro Matsumoto
• 👤 松本　俶博

Bibliographic Details