金属加工冷却液区域提供多种流体供用户选择。冷却液的一般类别包括直馏油、可溶性油、半合成和合成液体。本文详细介绍了半合成冷却液的应用能力、组成和优点。半合成冷却液是一个应用较少的类别。讨论了半合成油的物理和化学特性、优缺点、评估和选择特定流体的技术以及冷却剂维护程序。

THE METALWORKING COOLANT FIELD PROVIDES A WIDE ARRAY OF FLUIDS WHICH THE USER MAY SELECT. THE GENERAL CATEGORIES OF COOLANTS INCLUDE STRAIGHT OIL, SOLUBLE OIL, SEMI-SYNTHETIC, AND SYNTHETIC FLUIDS. THIS PAPER TAKES A CLOSER LOOK AT SEMI-SYNTHETIC COOLANTS--A LESS WIDELY USED CATEGORY--DETAILING THEIR APPLICATION CAPABILITIES, COMPOSITION, AND BENEFITS. THE PHYSICAL AND CHEMICAL CHARACTERISTICS OF SEMI-SYNTHETICS, THEIR ADVANTAGES AS WELL AS DISADVANTAGES, TECHNIQUES FOR EVALUATING AND SELECTING A PARTICULAR FLUID, AND COOLANT MAINTENANCE PROCEDURES ARE DISCUSSED.