Method for characterizing mixture reinforced thermo plastics (RTP) particle hardness
A technology of mixing materials and particles, applied in the direction of testing material hardness, etc., can solve the problems of easy crushing, soft agglomeration of particle structure, large measurement error, etc., and achieve the effect of ensuring production quality, good reproducibility and simple method.
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[0019] Example 1
[0020] A method for characterizing the hardness of mixed RTP particles of the present invention, wherein the mixed RTP particles are composed of 0.8um WC-10%Co-2% paraffin and some other necessary additives, and the method for characterizing the hardness of the mixed RTP particles , including the following steps:
[0021] (1) Take 50 grams of cemented carbide mixture (that is, the mixture RTP containing 0.8um WC-10%Co-2% paraffin and some other necessary additives);
[0022] (2) Use the standard screen Φ200*50-0.09 / 0.063 of the national standard GB-T 6003 for screening to remove fine powder;
[0023] (3) Take 20 grams of the sieved material after screening, use a 15*20mm mold, with a loading speed of 5mm / s, and a pressing force per unit area of 3Kg / cm 2 , the pressure holding time is 5 seconds, and it is pressed into a square; at this time, the powder particles in the square have very little binding force, and some powder particles with lower strength ha...
Example Embodiment
[0028] Embodiment 2
[0029] A method for characterizing the hardness of the mixture RTP particles of the present invention, wherein the mixture RTP particles are composed of 3.5um WC-6%Co-2% paraffin and some other necessary additives, and the method for characterizing the hardness of the mixture RTP particles , including the following steps:
[0030] (1) Take 50 grams of cemented carbide mixture (that is, the mixture RTP containing 3.5um WC-6%Co-2% paraffin and some other necessary additives);
[0031] (2) Use the standard screen Φ200*50-0.09 / 0.063 of the national standard GB-T 6003 for screening to remove fine powder;
[0032] (3) Take 20 grams of the sieved material after screening, use a 15*20mm mold, with a loading speed of 5mm / s, and a pressing force per unit area of 3Kg / cm 2 , the pressure holding time is 5 seconds, and it is pressed into a square; at this time, the powder particles in the square have very little binding force, and some powder particles with lower ...
Example Embodiment
[0036] Embodiment 3
[0037] A method for characterizing the hardness of mixed RTP particles of the present invention, wherein the mixed RTP particles are composed of 10.0um WC-12%Co-2% paraffin and some other necessary additives, and the method for characterizing the hardness of the mixed RTP particles , including the following steps:
[0038] (1) Take 50 grams of cemented carbide mixture (that is, the mixture RTP containing 10.0um WC-12%Co-2% paraffin and some other necessary additives);
[0039] (2) Use the standard screen mesh Φ200*50—0.09 / 0.063 of the national standard GB-T 6003 for sieving to remove fine powder;
[0040] (3) Take 20 grams of the sieved material after screening, use a 15*20mm mold, with a loading speed of 5mm / s, and a pressing force per unit area of 3Kg / cm 2 , the pressure holding time is 5 seconds, and it is pressed into a square; at this time, the powder particles in the square have very little binding force, and some powder particles with lower str...
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