PURPOSE: To improve the releasing property of Li from the surface of working dies and to facilitate working in the stage of subjecting soft metallic Li to machining such as rolling, pressing, cutting and blanking by carrying out metallic plating codeposited with fluoroplastics on the surfaces of the working dies.
CONSTITUTION: An ingot or a slightly thick sheet of soft metallic Li is subjected to working such as rolling with rollers, pressing, blanking or the like, and is thereby formed into a prescribed shape. Here, metallic plating of Ni, Cr, Cu, Pb, etc. codeposited with fluoroplastics such as polytetrafluoroethylene or the like is carried out on the surfaces of the rollers, the punches of press machines, etc. to contact with the metallic Li. The fluoroplstics have excellent heat resistance and chemical resistance, have a low coefft. of friction and permit machining of the Li with good releasing agent of sticky materials and high working efficiency.
MORIGAKI KENICHI
OOTSUKA HISAAKI
MORITA TERUYOSHI
