Rust-proof water-based cutting fluid

The invention discloses a rust-proof water-based cutting fluid, which consists of the following raw materials by weight: 10-12 parts of alkyl phosphate, 15-18 parts of sodium dodecylsulphate, 3-5 parts of polyethylene glycol, 3-5 parts of triethanolamine, 0.5-1 part of nano calcium carbonate, 1-3 parts of potassium borate, 0.5-1 part of borax, 5-8 parts of sodium petroleum sulfonate, 2-4 parts of sodium silicate, 0.5-1 part of phosphatidic acid, 1-3 parts of glyceryl monostearate, 0.5-1 part of vinyl acetate maleate, 0.05-0.1 part of t-butyl chromate, 0.01-0.04 part of methyl isobutyl ketone, 1-2 parts of tetramer castor ester, 3-5 parts of 4-methyl salicylate, 1-3 parts of a corrosion inhibitor, 2-6 parts of a rust inhibitor and 30-40 parts of deionized water. The cutting fluid has good cooling and lubrication performances, sterilization, antibiosis and good antirust effect.