WATER-SOLUBLE METAL PROCESSING OIL COMPOSITION, METHOD FOR PRODUCING WATER-SOLUBLE METAL PROCESSING OIL COMPOSITION, METAL PROCESSING FLUID, AND METAL PROCESSING METHOD

摘要

Provided are: a water-soluble metal processing oil composition which exhibits excellent grinding properties for stainless steel; a method for producing the water-soluble metal processing oil composition; a metal processing fluid obtained by diluting the water-soluble metal processing oil composition with water; and a metal processing method using these. This water-soluble metal processing oil composition contains (A) an oily agent containing a polymerized fatty acid, (B) a sulfur-based extreme pressure agent, and water. The content (b) of the sulfur-based extreme pressure agent (B) is not lower than the content (a) of the oily agent (A) on a mass basis.