1, the tool steel:
Its heat-resistant temperature between about 200-300 ℃, only suitable for cutting general materials at high temperatures will lose hardness. Because of this tool poor heat resistance, requiring better cooling effect of the cooling liquid, generally use the appropriate emulsion, plus Breasts use of cutting fluid M16 or M16-A can meet the requirements.

2, high-speed steel cutting tools:
This material is chromium, nickel, tungsten, molybdenum, vanadium (some also contain aluminum) based high alloy steel, their heat resistance significantly higher than tool steel, the maximum allowable temperature of up to 600 ℃. Compared with other high temperature metal and ceramic materials, high-speed steel has a number of advantages, particularly its higher tenacity, suitable for complex geometry of the workpiece and continuous machining, and high-speed steel with good workability and the price likely to be accepted, the use of the Canada-US semi-synthetic water-based cutting fluid M20-a or M21 can meet the requirements.

3, carbide steel cutting tools:
Carbide cutting tool is used by the tungsten carbide (WC), titanium carbide (TiC), tantalum carbide (TaC) and 5-10% cobalt, its hardness is much higher than the high-speed steel, up to the maximum allowable operating temperature 1000 ℃, with excellent wear resistance, in the processing of iron and steel materials, can reduce the adhesion phenomena between chips. Canada and the US use of semi-synthetic water-based cutting fluid MS45 or 46 can be.

4, ceramic tool:
Alumina, and metal carbides sintered at high temperature from high temperature wear resistance of this material better than carbide, generally use the dry cutting, but considering the uniform cooling and avoid overheating, often use water-based cutting fluid.

5, diamond tools:
It has a very high hardness, generally used for cutting. To avoid overheating, but also as a ceramic material, as in many cases the use of water-based cutting fluid under; of course, but also the use of cutting fluids which according to the processing of the workpiece material, ease of processing, processing methods and processing conditions circumstances so do a comprehensive analysis go to select.