Cutting oil quality testing must be fat content.

     Cutting oil main quality control indicators are viscosity, flash point, pour point, fat content, sulfur content, chlorine content, copper corrosion, moisture, mechanical impurities, such as four-ball test. Suzhou cutting oil cutting method can refer to the test method for the relevant standards, here only some of the items given a brief description.

     Fat content

     Fat is an oily additive in cutting oil and is an important indicator of the type of cutting oil. Fat in the cutting oil can play a role in reducing the friction coefficient, reducing tool wear (to prevent flank wear is particularly effective). Cutting fat with more fat is particularly suitable for non-ferrous metal processing and the amount of cutting is not large but the precision and finish requirements of the high occasions (such as precision car screw). Generally available saponification value to roughly determine the fat content. Cutting fat in the oil content is too high or its improper quality control, easy to form a viscous material on the machine caused by the movement is not flexible parts, will become a serious film that the so-called "yellow robe."