Hard alloy circular saw web
A cemented carbide, circular saw blade technology, applied in circular saws, metal sawing equipment, saw blades, etc., can solve the problems of short service life, more heat generation, cumbersome processing procedures, etc., to achieve smooth cutting surface, improve The effect of processing efficiency and long service life
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Example Embodiment
[0049] Example 1
[0050] Mixing: Weigh the cemented carbide material in parts by weight as described in Example 1 in Table 1 and add it to the ball mill. The grain size of the tungsten carbide powder is 0.3μm, and the cobalt binder contains 2% Mo and 0.2% organic Bentonite is added with 200ml ethanol and wet-milled to a powder particle size of 1 μm to obtain a mixed slurry. After the mixed slurry is filtered, it is dried at 120°C for 40 minutes to obtain a mixture;
[0051] Compression molding: under the condition of a pressure of 40 MPa, the mixture and 0.02% forming agent are poured into the saw tooth mold and pressed into a saw blade saw tooth blank, wherein the forming agent is polyethylene glycol;
[0052] Sintering: the saw blade base blank and saw blade saw tooth blank are quenched, the quenching temperature is 820℃, and the quenching time is 5 minutes; after quenching, it is sintered in vacuum at 1500℃, and the temperature is 1500℃ after sintering. Tempering is performed at...
Example Embodiment
[0057] Example 2:
[0058] Mixing: Weigh the cemented carbide material in parts by weight as described in Example 2 in Table 1 and add it to the ball mill. The grain size of the tungsten carbide powder is 0.32μm, and the cobalt binder contains 2.1% Mo and 0.21% organic Bentonite, and adding 210ml of ethanol to wet grinding to a powder particle size of 1.2μm to obtain a mixed slurry, after filtering the mixed slurry, drying at 122°C for 41min to obtain a mixture;
[0059] Press molding: under the condition of 42 MPa, the mixture and 0.022% forming agent are put into the saw tooth mold and pressed to obtain saw blade saw tooth blanks, wherein the forming agent is polyethylene glycol;
[0060] Sintering: the saw blade base blank and saw blade saw tooth blank are quenched, the quenching temperature is 823℃, and the quenching time is 5.5 minutes; after quenching, sintering is carried out in vacuum at 1520℃, and the sintering temperature is 1520℃. Tempering is performed at 384°C, and the ...
Example Embodiment
[0065] Example 3
[0066] Mixing: Weigh the cemented carbide material into the ball mill according to the weight parts described in Example 3 in Table 1. The grain size of the tungsten carbide powder is 0.34μm, and the cobalt binder contains 2.2% Mo and 0.22% organic Bentonite, and add 220ml of ethanol and wet-grind to a powder particle size of 1.4μm to obtain a mixed slurry. After filtering the mixed slurry, dry it at 124°C for 42 minutes to obtain a mixture;
[0067] Compression molding: under the condition of 44MPa, the mixture and 0.024% forming agent are put into the sawtooth mold and pressed to obtain saw blade sawtooth blanks, wherein the forming agent is polyethylene glycol;
[0068] Sintering: the saw blade base blank and saw blade saw tooth blank are quenched, the quenching temperature is 826℃, and the quenching time is 6 minutes; after quenching, it is sintered in vacuum at 1540℃, and the temperature is 1540℃ after sintering. Tempering at 388℃, the tempering time is 5.4h,...
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