The aluminum base plate of the electroplated slotted grinding wheel has oil stains and impurities during the processing. Before use, the substrate must be cleaned with gasoline or xylene, and then epoxy resin or liquid phenolic resin should be brushed on the contact part of the substrate and the material, and the grooved grinding wheel should be electroplated to ensure a firm bond between the abrasive and the substrate. Especially for the substrate without non-diamond layer, there are no knurls and grooves at the joint, so it is necessary to coat the adhesive
The matrix bonded with abrasive grains and fillers is taken out of the electroplating tank, and the fillers-brush, oil stone, cemented carbide knife are removed mechanically. Because the filler is only fixed on the substrate by a thin layer of metal, it actually protrudes from the surface of the diamond abrasive grain, so it is easy to clean up. Diamond abrasive grains are not clean because they are firmly fixed by the metal binder
PCD tools commonly used for electroplated slotted grinding wheels include mechanical grinding with diamond grinding wheels, electric discharge grinding, and electrolytic grinding. Among them, the mechanical grinding technology with diamond grinding wheels is mature and is currently widely used. This method of electroplating slotted grinding wheel has low grinding efficiency and high processing cost, but it can obtain good cutting edge quality and complete and smooth front and rear cutting faces.
The vitrified bond diamond grinding wheel has the common characteristics of diamond and vitrified bond. Compared with ordinary corundum and silicon carbide grinding wheels, the grinding force is strong, the grinding temperature is low, and the grinding wheel wear is small; it can adapt to the action of various coolants; the grinding wheel has good shape retention during grinding, and the grinding workpiece has high precision; on the grinding wheel There are many pores, which are conducive to chip removal and heat dissipation during grinding.
In the daily use of electroplated grooved grinding wheels, many operators are always accustomed to facing the grinding wheel because they can work hard in this direction, but in fact, this behavior should be particularly prohibited in the operation of the grinder. According to the operating regulations, when grinding a workpiece with a grinder, the operator should stand on the side of the wheel, not in front of the wheel
The prototype of the present invention takes advantage of the effect of the metallic binder having different retention capabilities on particles with different surface roughness and shapes. The surface of diamond abrasive grains is rough and irregular in shape, and it is firmly bonded to the metal bond, while the spherical filler has a smooth surface and regular shape, and it is not firmly bonded to the metal bond, and it is easy to brush off by mechanical methods.
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