What should I do if the PH value of water-based cutting fluid is high

The raw materials for preparing aqueous solution are mostly alkaline, and the PH value of aqueous solution should be between 8 and 9 during normal use. In fact, the supplier of aqueous liquid preparation should control the PH value not to exceed 1 1, and the method of adjusting the PH value is to add sebacic acid when making aqueous liquid. If the PH value is adjusted with water, the antirust and lubricating functions of water cutting fluid will be reduced.

Triethanolamine is the most used raw material in aqueous liquid, and its main function is to solve lubrication and cleaning. Other auxiliary materials include swire oil, trisodium phosphate, sodium nitrite, sodium benzoate, etc. If the ratio of trisodium phosphate to sodium hydroxide is too large, the PH value will be extremely high. This is also one of the ways for suppliers to speculate. It is suggested that it should be standardized in purchasing control.