Russian
Particle size refers to the size of the abrasive particles. Grit and powder particle size is divided into two categories. For large particle size cylindrical abrasive grinding metal cutting wheel at 40μm, called grits. Classification by screening, grit to grit through the sieve perforations per inch length expressed as the number.
Abrasive particle size selection, mainly with surface roughness and productivity related. When using the coarse grinding, the grinding margin, the required surface roughness is large, coarse grains should be used. Because coarse grains, large pores, grinding depth can be largerDC wheel easy to plug and fever. Grinding, the margin is small, requires a lower roughness, fine grains can be selected. Generally speaking, the more fine abrasive, grinding surface roughness better.
Grinding low strength and susceptible to temperature, humidity, vibration, impact, compression, and storage time and other factors, proper keeping of transport wheel, the importance of prevention of accidents. To do this, you should do the following:
1, the wheel should be stored in a dedicated storage rack.
2, the wheel should be possible to reduce storage handling, to avoid knocking and vibration cracks. Wheel crisp, do not by the impact, fall and crash.
3, stored rubber bonded grinding wheel should be taken not to touch the oil; resin bonded grinding wheels do not touch the alkali solution. Ceramic abrasive wet or frozen can not be placed where it will reduce the strength and abrasive grinding force.
Resin, rubber bonded grinding wheel should be kept smooth and flat sandwiched between two metal plates, metal plates should be greater than the wheel diameter, Also, do not put wet hair and the fan directly to prevent bending. Wheel can not be stored for a long, more than a year resins and rubber will deteriorate, this time must be strictly tested before use.
Rubber, resin bonded sheet wheel, storage should prevent deformation.
4 wheel preservation should prevail to the manufacturer's instructions, expired wheel can not easily be used.
5, the wheel during transport, and can not be installed together metal; and reduce vibration and shock.
6, abrasive should be stored in a dry place at room temperature for not less than 5 degrees Celsius; DC wheel stacked, the stack height of not more than 1. 5 m.
7, abrasive specifications should be separated, stored at a flag, to avoid confusion and error, grinding placement method should be considered depending on the shape and size. Large diameter or thick abrasive should be placed upright and slightly tilted, thinner and smaller wheel should be placed flat stack, but not too high, and in its place a flat under the iron to prevent wheel deformation or broken.