The application relates to the technical field of
grinding fluids for
metal processing, and discloses a
metal grinding fluid and a preparation method thereof. The
metal grinding fluid is prepared from the following raw materials in percentage by
mass: deionized water 60-70%,
lubricant 5-15%, organic alkali 9-15%, antirust agent 5-10%, bactericide 2-5%,
settling agent 0.1-0.5%, defoaming agent 0.2-0.3% and
copper corrosion inhibitor 0.3-0.5%. The metal grinding fluid takes deionized water as a basic component and is compounded with
lubricant, organic alkali, antirust agent, bactericide,
settling agent, defoaming agent and
copper corrosion inhibitor, so that the synthesized grinding fluid has excellent antirust performance, good cleaning and
chip removal performance and good cooling performance. Moreover, the polyether ester and organic
molybdenum are selected as the
lubricant, the synergistic
lubrication effect is realized, the friction-reducing and wear-resisting capacity of the grinding fluid is greatly improved compared with the lubricant used alone, and the metal grinding fluid can meet the grinding
lubrication requirements of difficult-to-
machine metals.