Method for plastic deformation of non-ferrous metals

Abstract

Abstract Tools, essentially based on Si 3 N 4 , for the plastic deformation of non-ferrous metals and alloys. The tools can be applied in the following technological fields: pipe drawing, wire drawing, rod rolling, sheet rolling, extrusion, die casting, of metals such as: copper, aluminium, zinc, tin, nickel, cobalt, titanium, etc., and alloys thereof. The Si 3 N 4 based tools replace conventional tools (eg. cemented carbide, die steel, high-speed steel tools) for the said purposes and have improved properties such as: heat resistance, wear resistance, thermal shock resistance, etc. This enables the useful life of the tools to be prolonged as ; compared with conventional tools in said technological applications. The tools described herein are composed of at least 50% by weight Si 3 N 4 , have a porosity of below 10% and may contain one or more of the following additives: Al, Al 2 O 3 , AIN, BeO, Be 3 N 2 , MgO, Mg 3 N z , CaO, Ca 3 N 2 , TiN, TiO 2 , ZrO z , Hf0 2 , FeO, SiO 2 , SiC, MoC, WC, and/or oxides, carbides, nitrides, borides, silicides of Y, Ce, etc. (group III B of the periodic table - particularly Y 2 O 3 , YN and CeO z ).

Inventors

• 👤 Ikuji C/O Yokohama Works Uemura
• 👤 Fumio C/O Yokohama Works Ono
• 👤 Eiji C/O Itami Works Kamijo
• 👤 Tatsuya C/O Itami Works Nishimoto
• 👤 Matsuo C/O Itami Works Higuchi

Bibliographic Details