In order to play a full role in the diamond, to try to increase the holding force of the diamond separating agent, progressive wheel separation strength. High temperature brazing layer superabrasive grinding wheel to restrain plating defects (diamond wheel) to complete the diamond, the separating agent, the metal matrix separation among chemical metallurgy, separated with high strength, the thickness of the separation layer only need to maintain the grinding grain height can be 20% to 30% high efficiency large load firmly gripped abrasive grinding, abrasive grinding wheel to make the brazing exposed height of up to 70% to 80%, thus increasing the chip space, wheel easy infarction, abrasive applications become abundant. Electroplated grinding wheel with the same processing conditions, high temperature brazing single grinding wheel grinding force, the power consumption, the grinding temperature is lower, meaning that higher operating speeds can be reached, this 300 ~ 500m / s or more ultra high speed grinding has a special significance. Uncoated single high temperature brazing diamond wheel plus Cr silver-based brazing filler metal layer of high frequency induction brazing wheel approach, with the added CrAg-Cu alloy as solder, 780 ℃ air brazing 35s, natural cooling, can be completed diamond with strong convergence between the steel substrate. By X-ray spectroscopy and X-ray diffraction analysis found that, Cr and diamond formed between Cr3C2, with the steel substrate is formed between (FexCry) C, with and without Cr by brazing cf real test proved that this is done with diamond and alloy layer steel substrate have a high separation between the main elements of strength, and after grinding real test confirmed the diamond does have a higher grip strength. The process advantages brazing temperature is low, the diamond injury. Silver-based solder defects lower melting point, high temperature resistant cutting poor performance, high efficiency heavy duty grinding applications have been limited. Ni-Cr alloy wheel abroad monolayer brazed diamond brazing process: first using oxyacetylene torch flame sprayed on steel substrate layer of Ni-Cr alloy layer, this layer can be used as the active metal brazing directly brazed diamond grit Then 1080 ℃ argon gas induction brazing 30s. Alloy layer flame spraying process, the appearance of the steel substrate oxidation, (diamond tools) after brazing divisive separating agent layer thickness uniformity hard abrasive arranged in effective control. The arrangement of diamond abrasive grains directly Ni-Cr alloy film or powder, and with the diamond abrasive grains pressed ceramic block, and a vacuum high frequency induction brazing machine 30s, the brazing temperature is 1080 ℃; or argon radiation furnace maintenance Stop brazing, proper control brazing temperature, holding time cooling rate.
Ceramic Diamond Wheel advantages: 1 small grinding force, low grinding temperature; 2, with high wear resistance: abrasion resistance wheel, abrasive consumption, particularly in the grinding very hard brittle workpiece the most obvious; 3, high grinding efficiency, grinding process is not easy fever and congestion; 4, high precision grinding of the workpiece surface quality of the workpiece to maintain good shape. Therefore, vitrified diamond wheel and some special materials in the ceramic grinding machining, with more and more obvious advantages in the development of diamond abrasive has a good prospect. Is considered to be high-speed, high efficiency, high precision, low grinding cost, low environmental pollution, high-performance abrasive, with more and more widely used, is the recent world competing tools for grinding hot research and development. Vitrified diamond grinding wheel with a high strength, heat resistance, sharp cutting, grinding, high efficiency, easy to heat during grinding and clogging, thermal expansion is small, easy to control the machining accuracy. With resin bond diamond wheel than it solves low lifetime resin diamond wheel, grinding efficiency is low, abrasive grinding process itself. It is based on ceramic bond diamond wheel grinding wheel above advantages, vitrified wheel gems appear immediately widely used in European and American countries wafers, PDC, polycrystalline diamond, diamond tools, cubic boron nitride, tungsten steel, new engineering structural ceramics, precious stones, crystal, rare earth materials contour machining hard and brittle materials, and achieved good economic benefits.