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水基金属加工液中水的硬度对乳化液的稳定性、防锈性、霉和细菌生长有极重要的作用。硬水中含有钙、镁、铁或铝离子,常用百万份水中含多少份(ppm)当量碳酸钙来表示水的硬度。 水在长期沸腾之后,仍然保持其硬度,这种水叫永久性硬水,它们的硬度是由钙、镁的氯化物或硫酸盐引起的。水在长期沸腾之后硬度下降,这种水叫暂时性硬水,其硬度是由碳酸氢钙和碳酸氢镁引起的,在加热之
Water-based metalworking fluid water hardness of the emulsion stability, rust-proof, mold and bacterial growth have a very important role. Hard water contains calcium, magnesium, iron or aluminum ions, commonly used millions of parts water (ppm) equivalent of calcium carbonate to represent the hardness of water. Water retains its hardness after long-term boiling. This kind of water is called permanent hard water and its hardness is caused by calcium, magnesium chloride or sulfate. Water hardness after long-term decline in boiling water, this water is called temporary hard water, the hardness is caused by calcium bicarbonate and magnesium bicarbonate, heated