| 摘要 |
PURPOSE:To provide a lubricant composition for high-temperature use, containing graphite powder, a water-soluble or water-dispersible polymer and a phosphorus compound at specific ratios, and suitable for the hot working such as the rolling, forging and drawing of steel, extrusion of aluminum and copper, drawing of tungsten and molybdenum, etc. CONSTITUTION:The objective lubricant composition is composed of (A) 100 pts.(wt.) of graphite powder having a purity of usually >=75% and an average particle diameter of preferably 0.3-30mu, (B) 5-70pts. of a water-soluble or water-dispersible polymer [preferably acrylic, vinyl acetate, ethylene, or maleic anhydride-type (co)polymer], and (C) 1-60pts. of a phosphorus compound [e.g. phosphoric acid (salt), tripolyphosphate, metaphosphate, pyrophosphate, trialkyl phosphate, etc.]. USE:Suitable especially for the hot rolling of seamless steel pipe. |
