Discussion on the electrolytic grinding wheel

The main difference between electrolytic grinding and anodic mechanical grinding and conductive grinding is [u]grinding wheel made in China[/u].
 
The electrolytic grinding wheel does not contain special alloy components, mainly has good electrical conductivity, requires the uniform distribution of abrasives, and protrudes from the metal substrate by 25-50 microns to maintain the electrolytic gap, accommodate the electrolyte, and prevent the two-pole short circuit. The abrasive grain protrusion is obtained by the reverse polarity dressing grinding wheel. At this time, [u]fast 9'' grinding wheel[/u] is connected to the positive electrode, the copper block is trimmed to the negative electrode, and the electrolyte is injected. The voltage is selected to be 8-10 volts, and the current density is 30-50 amps/cm 2. Electrolysis, the surface of the grinding wheel metal is chromatographed, and the reverse electrolysis time is generally 20-30 minutes. Gap measurement is difficult, generally mastered by experience, or with a universal electric meter, one end is in contact with the surface of the grinding wheel, and the other end is in contact with the metal substrate to achieve insulation.
 
Diamond abrasives are often used because of their high hardness, good particle shape, and long life; but they are more expensive. We used alumina abrasives, and we can get better results after testing.
 
When the electrolytic fast 9'' grinding wheel is selected, a single-layer abrasive plating wheel is used to combine the abrasive and the metal by the nickel plating method and has the advantages of small electric resistance and uniform abrasive, but the plating layer is thin, the trimming is difficult, and the service life is short. The other is a metal bond grinding wheel made in China, which is obtained by mixing and sintering a metal powder and an abrasive. It has the advantages of convenient dressing and long service life, but the resistance is slightly larger, and the abrasive distribution is sometimes not uniform enough. Both types of grinding wheels are used in price, and the metal bond grinding wheel is suitable for promotion because of its convenient manufacture and long service life.
 
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