LUBRICATING OIL COMPOSITION FOR DIE FORGING

摘要

Provided is a lubricating oil composition for die forging which has excellent lubricity. Also provided is a die forging device which is suitable also for the lubricating oil composition for die forging. The lubricating oil composition for die forging comprises at least two solid lubricants differing in particle diameter, an extreme-pressure additive, and a base oil as the remainder. The die forging device comprises: a pair of dies, an upper die and a lower die, that is for sandwiching therebetween a material to be forged and forming the material; and a lubricating-oil-composition sprayer for spraying the lubricating oil composition for die forging over the surfaces of the dies. The lubricating-oil-composition sprayer is equipped with an oil supply tank in which the lubricating oil composition for die forging is stored and a supply pipe for sucking up the lubricating oil composition for die forging from the oil supply tank and supplying the composition to a nozzle, the supply pipe having a plurality of suction ports.