Preparation method of large high density tungsten alloy counterweight
A tungsten alloy and counterweight technology, which is applied in the field of high-density tungsten alloy large-scale counterweight and its preparation, can solve the problems of low uniformity of internal and external density, affect the processing and use of counterweight, and a large number of pores, etc., to achieve low cost and meet density Requirements, organization uniform effect
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[0022] Example 1:
[0023] The manufacturing weight is 100Kg cylindrical counterweight, and the density requirement is 17.3g / cm 3 ±0.2g / cm 3 .
[0024] Step 1: The cylindrical counterweight can be divided into two small counterweights of 50Kg to prepare;
[0025] Step 2: The components and their contents in terms of mass percentage are: Tungsten W: 91%, Nickel Ni: 6.3%, and Iron Fe: 2.7%. According to the mass percentage of the above powder raw materials, the average particle size of tungsten powder is 2.5μm~3.5μm, and the purity is ≥99%; the average particle diameter of nickel powder is about 1μm~3μm, and the purity is ≥99.8%; , Purity ≥99.5%; mixing in a mechanical mixer for 12h.
[0026] Step 3: Put the mixed raw material powder into a soft rubber mold, seal the rubber stopper, and press it in a wet-jacket cold isostatic press with a pressing force of 200 MPa and holding pressure for 3 seconds.
[0027] Step 4: The pressed billet is put into a fixed-point hydrogen furnace for liqui...
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[0029] Example 2:
[0030] The manufacturing weight is 150Kg cylindrical counterweight, and the density requirement is 17.6g / cm 3 ±0.2g / cm 3 .
[0031] Step 1 The cylindrical counterweight can be divided into three small counterweights of 50Kg to prepare;
[0032] Step 2 The components and their contents in terms of mass percentage are: Tungsten W: 93%, Nickel Ni: 5%, and Iron Fe: 2%. According to the above-mentioned powder raw materials, the average particle size of tungsten powder is 2.5μm~3.5μm, and the purity is ≥99%; the average particle diameter of nickel powder is about 1μm~3μm, and the purity is ≥99.8%; the average particle diameter of iron powder is about 1μm~3μm. , Purity ≥99.5%; mixing in a mechanical mixer for 12h.
[0033] Step 3: Put the mixed raw material powder into a soft rubber mold, seal the rubber stopper, and press it in a wet-jacket cold isostatic press with a pressing force of 200 MPa and holding pressure for 3 seconds.
[0034] Step 4: The pressed billet is put...
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[0036] Example 3:
[0037] The manufacturing weight is 300Kg cylindrical counterweight, and the density requirement is 18.0±0.2g / cm 3 .
[0038] Step 1 The cylindrical counterweight can be divided into six small counterweights of 50Kg to prepare;
[0039] Step 2 The components and their contents in terms of mass percentages are: Tungsten W: 95%, Nickel Ni: 3%, and Iron Fe: 2%. According to the above-mentioned powder raw materials, the average particle size of tungsten powder is 2.5μm~3.5μm, and the purity is ≥99%; the average particle diameter of nickel powder is about 1μm~3μm, and the purity is ≥99.8%; the average particle diameter of iron powder is about 1μm~3μm. , Purity ≥99.5%; mixing in a mechanical mixer for 12h.
[0040] Step 3: Put the mixed raw material powder into a soft rubber mold, seal the rubber stopper, and press it in a wet-jacket cold isostatic press with a pressing force of 200 MPa and holding pressure for 3 seconds.
[0041] Step 4: The pressed billet is put into a ...
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