| abstract |
(57) [Summary] [Purpose] It is an object to provide a lubricating coating agent having a good lubricating action during hot forging. [Composition] High melting point water-soluble inorganic salt (Na 2 SO 4 , K 2 SO 4 , K 3 PO 4 , Na 2 SiO 3 , water glass <Na 2 O · 2-4 SiO 2 , K 2 O · 2-4 SiO 2 > etc.) 5% to 30%, and an aqueous solution (suspension) containing one or two or more of high melting point and cleavable minerals (kaolin, talc, mica, etc.), respectively. After applying uniformly on the surface of the material to be forged by the dipping method etc., Form a film by drying and use it as it is, or preheat the material to be forged in order to prevent mold retention of the water-soluble inorganic salt and improve mold releasability, and coat graphite with the above film agent. To form a lubricating coating. |