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不含矿物油或含少量矿物油的合成和半合成润滑冷却液,在金属切削加工中具有日益重大的意义.这种润滑冷却液比油乳化液和水乳化液具有一系列优点.大多数合成润滑冷却液的基础是聚乙稀醇,在此基础上制成了—10型润滑冷却液,这种润滑冷却液已在金属磨削和切削加工中进行了广泛的试验,它可提高刀具耐用度0.5—1倍,降低被加工表面粗糙度1—1.5级.这种润滑冷却液实际上不会遭受微生物和霉菌的污染,建议在加工铸铁件、碳钢、不锈钢、耐热钢、热强钢、钛及其合金时,用于一系列金属切削加工工序.在特别困难的工序上,可使用浓缩的这种润滑冷却液.但是—10型润滑冷却液有一系列重大的缺点,因而妨碍其在工业中广泛的应用.例如,有时浓缩液层离,工作溶液不稳定,有沉淀物析出,以及在机床零件上形成粘性沉淀物,这是润滑冷却液洗涤能力低的
Synthetic and semi-synthetic lubricants that contain no mineral oil or small amounts of mineral oil are of increasing importance in metal cutting processes and provide a number of advantages over both oil and water emulsions.Most synthetic Lubricant is based on polyvinyl alcohol, on the basis of which a -10 lubricant coolant has been made. This lubricant has been extensively tested in metal grinding and cutting operations to increase tool life Degree of 0.5-1 times, reduce the surface roughness of the processed 1-1.5.This kind of lubrication coolant will not actually be contaminated by microorganism and mold, it is recommended to process cast iron parts, carbon steel, stainless steel, heat-resistant steel, hot Steel, Titanium and their alloys are used in a series of metal cutting operations. Concentrated lubricating greases are used in particularly difficult processes. However, the Type-10 greasing fluid has a number of major drawbacks that prevent it from Widely used in industry, for example, there is a case where the concentrated liquid is separated from the layer, the working solution is unstable, precipitates are precipitated, and a viscous deposit is formed on the machine tool parts,