Tungsten alloy material and preparation method thereof
A technology of tungsten alloy and mixed raw materials, which is applied in the field of tungsten alloy materials and its preparation, can solve the problems of mixed powder particle size, uneven mixing, large liquid phase sintering shrinkage, and difficulty in controlling the size and groove
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[0020] Example 1
[0021] 1) Weigh 200g of each raw material powder according to the proportion in Table 1, and mix them;
[0022] Table 1 Raw material formula of tungsten alloy
[0023] powder purity(%) Proportion (mass fraction%) W Not less than 99.9%92 Ni Not less than 99.5%3 Fe Not less than 99.5%2 Cu Not less than 99.5%1.5 Re Not less than 99.5%1 CeO 2
[0024] 2) Add the above-mentioned mixed raw materials, 150 ml of ethanol, 1 kg of cemented carbide balls into the ball mill tank, and grind at 350 r / min for 48 hours in an argon atmosphere, and dry the ground powder under an infrared lamp for 10 minutes;
[0025] 3) Put the mixture powder obtained by high-energy ball milling alloying into the graphite mold, and then put the graphite mold into the spark plasma system for spark plasma sintering, ensuring that the center of the powder is aligned with the temperature measurement point. The graphite mold has a densely packed inner diameter of Φ20. The powder and the graphite mol...
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[0027] Example 2
[0028] 1) Weigh 200g of each raw material powder according to the ratio of Table 2 and mix them;
[0029] Table 2 Raw material formula of tungsten alloy
[0030]
[0031]
[0032] 2) Add the above-mentioned mixed raw materials, 150 ml of ethanol, 1 kg of cemented carbide balls into the ball mill tank, and grind at 350 r / min for 48 hours in an argon atmosphere, and dry the ground powder under an infrared lamp for 10 minutes;
[0033] 3) Put the mixture powder obtained by high-energy ball milling alloying into the graphite mold, and then put the graphite mold into the spark plasma system for spark plasma sintering, ensuring that the center of the powder is aligned with the temperature measurement point. The graphite mold has a densely packed inner diameter of Φ20. The powder and the graphite mold are separated by carbon paper. The graphite mold is placed in a pre-press, and pressure is applied between the upper and lower pressure heads of the graphite mold to 10MPa, a...
Example Embodiment
[0035] Example 3
[0036] 1) Weigh 200g of each raw material powder according to the ratio of Table 3, and mix them;
[0037] Table 3 Raw material formula of tungsten alloy
[0038]
[0039]
[0040] 2) Add the above-mentioned mixed raw materials, 150 ml of ethanol, 1 kg of cemented carbide balls into the ball mill tank, and grind at 350 r / min for 48 hours in an argon atmosphere, and dry the ground powder under an infrared lamp for 10 minutes;
[0041] 3) Put the mixture powder obtained by high-energy ball milling alloying into the graphite mold, and then put the graphite mold into the spark plasma system for spark plasma sintering, ensuring that the center of the powder is aligned with the temperature measurement point. The graphite mold has a densely packed inner diameter of Φ20. The powder and the graphite mold are separated by carbon paper. The graphite mold is placed in a pre-press, and pressure is applied between the upper and lower pressure heads of the graphite mold to 10MPa, ...
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