First, choose the grinding wheel material suitable for grinding rolls
Grinding roll is a more important equipment for metal rolling. The choice of grinding wheel suitable for grinding roll needs to consider the material, hardness and other factors.
Common grinding wheel materials include aluminum oxide (Al2O3), silicon carbide (SiC) and zirconia (ZrO2). Among them, alumina is the most commonly used material because of its high hardness, good toughness and long service life. The hardness of silicon carbide is slightly higher than that of alumina, but the toughness is poor and it is easy to crack. Zirconia has the highest hardness, but is expensive and has a short service life.
Second, choose the shape of the grinding wheel suitable for the grinding roll
There are many shapes of grinding rolls, so it is necessary to choose the shape of grinding wheel suitable for grinding rolls. Common grinding wheel shapes include flat grinding wheel, bowl grinding wheel, cone grinding wheel and so on.
The flat grinding wheel is suitable for the flat part of the grinding roll, the bowl grinding wheel is suitable for the curved part of the grinding roll, and the conical grinding wheel is suitable for the conical part of the grinding roll. The corresponding shape of the grinding wheel should be selected according to the actual shape of the grinding roll.
3. Select the grinding wheel size suitable for grinding rolls
The grain size of the grinding wheel represents the precision of the grinding roll surface treatment, and the common grinding wheel size includes 24 mesh, 36 mesh, 46 mesh, 60 mesh, 80 mesh and so on. The larger the particle size, the lower the processing accuracy, but the longer the grinding wheel life; The smaller the particle size, the higher the processing accuracy, but the wheel life is shorter.
4. Select the hardness of the grinding wheel suitable for the grinding roll
The hardness of the grinding wheel represents the grinding ability of the grinding wheel, the higher the hardness, the stronger the grinding ability, but it is easy to overheat. Common grinding wheel hardness includes H, J, K, L, M grades, of which H is the hardest, M is the softest.
Fifth, purchase advice
In the purchase, it is necessary to choose the appropriate grinding wheel material, shape, particle size and hardness according to the actual situation of the grinding roll. In addition, it is necessary to buy products from regular channels and avoid buying fake and shoddy products. In the process of use, it is also necessary to pay attention to ensure the adhesion of the grinding wheel and the grinding roll to avoid overheating.
【 Summary 】
This paper introduces the material, shape, particle size, hardness and other factors to be considered in selecting the grinding wheel for grinding rolls. Choosing a suitable grinding wheel can not only improve the processing accuracy of the grinding roll, but also effectively extend its service life and improve production efficiency.
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