First, what kind of cutting fluid should be used according to the material of the workpiece, the difficulty of the processing technology, the processing mode, the working condition of the processing to do a comprehensive analysis and then to choose.

1. Steel cutting tools

Its heat-resistant temperature is about 200-300℃, can only be applied to the cutting of general materials, will lose hardness at high temperature. Due to the poor heat resistance of the tool, the cooling effect of the coolant is better. Generally, the emulsion is appropriate. The use of emulsified cutting fluid M16 or M16-A can fully meet the requirements.

2. High speed steel tool

This material is a high-grade alloy steel based on chromium, nickel, tungsten, molybdenum, vanadium (some containing aluminum), which has significantly higher heat resistance than tool steel, with a maximum permissible temperature of 600℃. Compared with other high temperature resistant metal and ceramic materials, high speed steel has a series of advantages, especially its high tenacity, suitable for geometrically complex workpiece and continuous cutting, and high speed steel has good machinability and price is easy to accept, the use of Gamet semi-synthetic water-based cutting fluid M20-A or M21 can meet the requirements.

Hard alloy steel tool

The hard alloy used for cutting tools is composed of tungsten carbide (WC), titanium carbide (TiC), tantalum carbide (TaC) and 5-10% cobalt, its hardness is much higher than that of high-speed steel, the maximum allowable operating temperature can reach 1000℃, has excellent wear resistance, in the processing of iron and steel materials, can reduce the bonding phenomenon between chips. Use Gamet semi-synthetic water-based cutting fluid MS45 or 46.

4, ceramic tool

It is made of alumina, metal and carbide sintered at high temperature. The high temperature wear resistance of this material is better than that of hard alloy. Dry cutting is generally adopted, but considering uniform cooling and avoiding excessive temperature, water-based cutting fluid is often used.

5. Diamond tool

With high hardness, generally used in cutting. In order to avoid excessive temperature, also like ceramic materials, water based cutting fluid is used in many cases.

Of course, what kind of cutting fluid should be used according to the material of the workpiece, the difficulty of the processing technology, the processing mode, the working condition of the processing to do a comprehensive analysis and then choose.