A kind of WC-Ni3Al cemented carbide toughened by Zr element and preparation method thereof
A technology of cemented carbide and its manufacturing method, which is applied in the field of cemented carbide materials and its preparation, and can solve problems such as performance degradation and poor toughening effect
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Embodiment 1
[0022] Embodiment 1: the mass percentage is 0.005% ZrH 2 pre-wet milling 1 Hours later, add the remaining WC+Ni 3 Al pre-alloyed powder (Ni 3 The mass percentage of Al in the pre-alloyed powder is 5.04% ) were added together for wet grinding to obtain a wet-milled mixture; the wet-milled mixture was spray-dried and pressed to form a green compact; 1°C / min The speed rises from room temperature to 450°C, keep warm 1 hour , to an ultimate vacuum of 4×10 -3 Below Pa, then continue to heat up to 650℃ ,from 650℃ Starting at the initial temperature, pass the 20mbar low-pressure hydrogen, and 1°C / min The heating rate rises to the end temperature 1000℃ , and then evacuated again to 4×10 -3 Below Pa and keep warm 1 hour , to complete the low-pressure hydrogen treatment of the compact; and then follow the conventional sintering curve to heat up to 1550℃ The sintering temperature of Zr toughened WC-Ni was obtained after low pressure liquid phase sintering 3 Al cemented ...
Embodiment 2
[0026] Embodiment 2: the mass percent is 0.026% ZrH 2 pre-wet milling 1.5 Hours later, add the remaining WC+Ni 3 Al pre-alloyed powder (Ni 3 The mass percentage of Al in the pre-alloyed powder is 5.04% ) were added together for wet grinding to obtain a wet-milled mixture; the wet-milled mixture was spray-dried and pressed to form a green compact; 3℃ / min The speed rises from room temperature to 450°C, keep warm 1.5 hours , to an ultimate vacuum of 4×10 -3 Below Pa, then continue to heat up to 550℃ ,from 550℃ Starting at the initial temperature, pass the 40mbar low-pressure hydrogen, and 3℃ / min The heating rate rises to the end temperature 1100℃ , and then evacuated again to 4×10 -3 Below Pa and keep warm 1.5 hours , to complete the low-pressure hydrogen treatment of the compact; and then follow the conventional sintering curve to heat up to 1550℃ The sintering temperature of Zr toughened WC-Ni was obtained after low pressure liquid phase sintering 3 Al cement...
Embodiment 3
[0027] Embodiment 3: the mass percentage is 0.051% ZrH 2 pre-wet milling 2 Hours later, add the remaining WC+Ni 3 Al pre-alloyed powder (Ni 3 The mass percentage of Al in the pre-alloyed powder is 5.04% ) were added together for wet grinding to obtain a wet-milled mixture; the wet-milled mixture was spray-dried and pressed to form a green compact; 5℃ / min The speed rises from room temperature to 450°C, keep warm 2 hours , to an ultimate vacuum of 4×10 -3 Below Pa, then from 450℃ Starting at the initial temperature, pass the 60mbar low-pressure hydrogen, and 5℃ / min The heating rate rises to the end temperature 1200℃ , and then evacuated again to 4×10 -3 Below Pa and keep warm 2 hours , to complete the low-pressure hydrogen treatment of the compact; and then follow the conventional sintering curve to heat up to 1550℃ The sintering temperature of Zr toughened WC-Ni was obtained after low pressure liquid phase sintering 3 Al cemented carbide, where the binder phas...
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