Preparation technology of metal ceramic bonding agent diamond/ cubic boron nitride (CBN) grinding wheel
A ceramic bond and preparation technology, which is applied in metal processing equipment, manufacturing tools, grinding/polishing equipment, etc., can solve problems such as loss of function, long sintering time, metal oxidation, etc., and achieve simple preparation process and improved performance Effect
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Embodiment 1
[0018] The cermet bonded diamond CBN grinding wheel buried in sand was placed in a reducing atmosphere furnace. Check that the equipment is in good condition, the gas passage is unobstructed, and hydrogen gas is introduced. Set the heating curve: from room temperature to 300°C, the heating rate is 2°C / min; at 300°C for 1.5h; from 300°C to 750°C, the heating rate is 1.5°C / min; at 750°C for 2h; from 750°C Raise the temperature to 900°C with a heating rate of 1°C / min; hold at 900°C for 1.5h; then cool with the furnace.
Embodiment 2
[0020] The cermet bonded CBN grinding wheel buried in sand was placed in a reducing atmosphere furnace. Check that the equipment is in good condition, the gas passage is unobstructed, and hydrogen gas is introduced. Set the heating curve: from room temperature to 300°C, the heating rate is 2.2°C / min; at 300°C for 1.2h; from 300°C to 750°C, the heating rate is 1.8°C / min; at 750°C for 1.8h; from 750°C ℃ to 900℃, the heating rate is 1.2℃ / min; hold at 900℃ for 1.4h; cool with the furnace.
[0021] The formula of two embodiment emery wheels, mixing and cold pressing process are all the same:
[0022] Its formula and weight ratio are: CBN abrasive (100 / 120) 60%.
[0023] Metal ceramic bond 30%
[0024] Wetting agent and binder 5%
[0025] Auxiliary material (SIC or Al 2 o 3 ) 5%
[0026] The raw materials are mixed evenly, then cold-pressed, and finally sintered. After sintering, the matrix is matched, and then the product performance is tested.
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