In the classification of metal materials, stainless steel is often divided into five categories according to the characteristics of metallographic features, namely: martensitic stainless steel, ferritic stainless steel, austenitic stainless steel, austenitic ferrite duplex stainless steel, precipitation Hardened stainless steel. The most common austenitic stainless steel is about 70% of the total stainless steel. The addition of different elements will directly affect the microstructure of stainless steel, such as ferrite forming elements: Cr, Mo, Si, Ti, Nb; austenite forming elements: C, N, Ni, Mn, Cu and so on. The content of Cr in stainless steel has a crucial influence on the corrosion resistance and oxidation of stainless steel. At present, the addition of Cr and Ni in stainless steel accounts for more than 60% of the total output of stainless steel. Compared with structural steel, stainless steel has a poor thermal conductivity, low modulus of elasticity, large elongation, and a large reduction in area, which brings many difficulties in processing, especially grinding. The remarkable features of the flat cutting disc on sale are that it is highly prone to grinding and sticking, clogging the grinding tools, affecting the grinding efficiency and the quality of the grinding, and even causing both the stainless steel processing and the grinding tools to suffer. Features in grinding stainless steel: 1. Stainless steel has high toughness and high heat strength, while the cutting edge of the grinding wheel has a large negative rake angle. During the grinding process, the grinding debris is not easily cut off, the cutting resistance is large, and the extrusion and friction are severe. The grinding force per unit area is very large, and the grinding temperature can reach 1000 ° C ~ 1500 ° C. At the same time, under the action of high temperature and high pressure, the grinding debris tends to adhere to the grinding wheel, filling the gap of the abrasive particles, so that the abrasive grains lose the cutting effect. Different types of stainless steel, the situation of the grinding wheel blockage is not the same, such as grinding resistant to concentrated nitric acid stainless steel and heat-resistant stainless steel, adhesion, and clogging phenomenon is more serious than 1Cr18NiTi, while martensitic stainless steel such as 1Cr13, 2Cr13 is lighter. 2. The thermal conductivity of stainless steel is small, the high temperature during grinding is difficult to be exported, and the surface of the workpiece is prone to burns and annealing. The depth of the annealed layer sometimes reaches 0.01 to 0.02 mm. Serious crushing deformation during grinding causes works hardening on the grinding surface. Especially when grinding austenitic stainless steel, the austenite structure is not stable enough, and the martensite structure is easily generated after grinding, which makes the surface hardening severe. 3. The linear expansion coefficient of stainless steel is large, and it is easy to deform under the action of grinding heat, and its size is difficult to control. This is especially true for thin-walled and slender parts. 4. Most types of stainless steel cannot be magnetized. In the case of aluminum flat cutting disc, the workpiece can only be clamped by mechanical clamping or special fixtures. The workpiece is clamped on the side of the workpiece to cause deformation and shape or dimensional error. protruding. At the same time, it will also cause chattering during the grinding process and scaly ripples.