A kind of cemented carbide particle and its preparation method and cemented carbide and its preparation method
A technology of cemented carbide particles and cemented carbide, which is applied in the field of alloys, can solve the problems of limited application, good toughness, wear resistance and hardness, etc., to save mold manufacturing costs and machining costs, and improve strength and wear resistance , the effect of good toughness
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[0071] The present invention provides the preparation method of cemented carbide particles described in the above technical scheme, comprising:
[0072] In WC-V-Cr-Y-La-Ni 3 Al-SiC particles coated with WC-V-Cr-Y-La-Ni 3 Al, to get cemented carbide particles.
[0073] In the present invention, the WC-V-Cr-Y-La-Ni 3 Al-SiC particles and WC-V-Cr-Y-La-Ni described in the above technical scheme 3 The Al-SiC particles are the same, and will not be repeated here. In the present invention, the coated WC-V-Cr-Y-La-Ni 3 WC-V-Cr-Y-La-Ni is preferred in the Al process 3 Al slurry for coating. In the present invention, the WC-V-Cr-Y-La-Ni 3 Al paddle indicates that the composition includes WC, V, Cr, Y, La and Ni 3 Al cemented carbide paste. In the present invention, the WC-V-Cr-Y-La-Ni 3 The mass content of each component in the Al slurry is the same as that of WC-V-Cr-Y-La-Ni described in the above-mentioned technical scheme 3 The mass content of each component in the Al tran...
Embodiment 1
[0096] 1) Prepare WC-V-Cr-Y-La-Ni according to the following method 3 Al-SiC particles:
[0097] 80wt.% of WC, 6wt.% of Ni 3 Al, 10wt.% of SiC, 1wt.% of V, 1wt.% of Cr, 1wt% of Y, 1wt% of La and paraffin are mixed to obtain a mixture; the amount of paraffin is 2wt% of the mass of the mixture; The mixture is sequentially subjected to wet milling, dry granulation, sieving, dewaxing and sintering to obtain WC-V-Cr-Y-La-Ni 3 Al-SiC particles. The ball milling speed of the wet milling was 200r / min, the wet milling time was 48 hours, and the drying and granulation temperature was 60°C. The dewaxing is carried out in hydrogen, the dewaxing temperature is 400°C, the dewaxing time is 2 hours, the sintering is carried out in vacuum, and the sintering temperature is 1400°C. The WC-V-Cr-Y-La-AlNi prepared in this example 3 - The particle diameter of the SiC particles is 40 μm, wherein the particle diameter of the WC is 1 μm.
[0098] 2) Prepare WC-V-Cr-Y-La-Ni according to the follo...
Embodiment 2
[0108] 1) Prepare WC-V-Cr-Y-La-Ni according to the following method 3 Al-SiC particles:
[0109] 70wt.% of WC, 6wt.% of Ni 3 The SiC of Al, 20wt.%, the V of 1wt.%, the Cr of 1wt.%, the Y of 1wt%, the La of 1wt% and paraffin mix, obtain mixture, and the consumption of described paraffin is 2wt% of mixture mass; The mixture is sequentially wet milled, dry granulated, sieved, dewaxed and sintered to obtain WC-V-Cr-Y-La-Ni 3 Al-SiC particles. The ball milling speed of the wet milling was 200r / min, the wet milling time was 48 hours, and the drying and granulation temperature was 60°C. The dewaxing is carried out in hydrogen, the dewaxing temperature is 400°C, the dewaxing time is 2 hours, the sintering is carried out in vacuum, and the sintering temperature is 1400°C. The WC-V-Cr-Y-La-AlNi prepared in this example 3 - The SiC cemented carbide particles have a particle size of 40 μm.
[0110] 2) Prepare WC-V-Cr-Y-La-Ni according to the following method 3 Al carbide paddle:
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