Manufacturing method of high-strength and high-toughness Ti (C, N) based metal ceramic
A high-strength, high-toughness, metal-based technology, applied in the field of cermets, can solve the problems of cermets instability, easy crack initiation, and differences in physical properties of thermal expansion coefficients, etc., and achieve the effect of complete crystal lattice, long red hardness, and high toughness
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Embodiment 1
[0037] 50.8Ti(C,N)-18WC-7Mo 2 C-5VC-10Ni-8Co-1.2C cermet
[0038] In the present embodiment 1, the mass parts of cermet component raw materials are as follows: 50.8 parts of Ti(C, N) solid solution powder, 18 parts of WC powder, 7 parts of Mo 2C powder, 5 parts of VC powder, 10 parts of Ni powder, 8 parts of cobalt powder and 1.2 parts of carbon powder, the total amount is 100 parts.
[0039] The specific preparation method is as follows: put the weighed raw material powders in the ball milling tank, add absolute ethanol until the surface of the balls and powder is submerged; carry out roller milling on the ball milling tank, the ball-to-material ratio is 12:1, and the rotation speed is 120r / min, the ball milling time is 60h; after ball milling, add 2% molten paraffin to the mixture, and carry out vacuum stirring for 2h; vacuum dry the powder, the drying temperature is 100°C, and the drying time is 8h; then pass the powder through a 100-mesh sieve net, cold pressing, pressi...
Embodiment 2
[0043] 65Ti(C,N)-18WC-5Mo2C-2VC-5Ni-4Co-1C cermet
[0044] In the present embodiment 2, the mass parts of cermet component raw materials are as follows: 65 parts of Ti (C, N) solid solution powder, 18 parts of WC powder, 5 parts of Mo 2 C powder, 2 parts of VC powder, 5 parts of cobalt and 4 parts of nickel, 1 part of carbon totals 100 parts.
[0045] The specific preparation steps are as follows: put the weighed powder in the ball mill tank, add absolute ethanol until the surface of the ball and powder is submerged; carry out roller milling on the ball mill tank, the ball-to-material ratio is 10:1, and the speed is 100r / min. The ball milling time is 72 hours; after ball milling, add 3% molten paraffin to the mixture, and carry out vacuum stirring for 2 hours; vacuum dry the powder at a drying temperature of 100°C and a drying time of 8 hours; then pass the powder through a 100-mesh sieve, Carry out cold pressing, the pressing pressure is 200MPa, and the pressure is maintaine...
Embodiment 3
[0048] 54.5Ti(C,N)-13WC-9Mo 2 C-7(Ti,V)C-15Ni-1.5C cermet
[0049] In the present embodiment 1, the mass parts of cermet component raw materials are as follows: 54.5 parts of Ti(C, N) solid solution powder, 13 parts of WC powder, 9 parts of Mo 2 C powder, 7 parts of (Ti, V) C powder, 15 parts of Ni powder and 1.5 parts of carbon powder, the total amount is 100 parts.
[0050] The specific preparation method is as follows: put the weighed raw material powders in the ball milling tank, add absolute ethanol until the surface of the balls and powder is submerged; carry out roller milling on the ball milling tank, the ball-to-material ratio is 8:1, and the speed is 120r / min, the ball milling time is 80h; after ball milling, add 2% molten paraffin to the mixture, and carry out vacuum stirring for 3h; vacuum dry the powder, the drying temperature is 100°C, and the drying time is 12h; then pass the powder through a 100-mesh sieve net, cold pressing, pressing pressure 200MPa, holdin...
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