Ceramic shell mould used for beryllium aluminium alloy, and preparation method thereof
A ceramic mold shell, beryllium aluminum alloy technology, applied in metal processing equipment, manufacturing tools, casting and molding equipment, etc., can solve the difficulties of increasing protection, high toxicity of beryllium oxide, serious environmental pollution, etc., to save raw material costs and The effect of protection cost, simple preparation process and low environmental requirements
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Embodiment 1
[0027] Example 1: A method for preparing a mold shell for Be-38%Al alloy precision casting:
[0028] 1. Prepare the wax mold required for the product according to the existing method. First, preheat the wax material in the wax injection machine to the range of 65 ℃ ~ 70 ℃, then fill the wax material into the metal steel mold within 15 ~ 30 seconds, after holding the pressure for 30 ~ 60 seconds, put The formed wax pieces are taken out from the metal steel mold and placed in a normal temperature water pool. After cooling for 1 to 2 hours, the dimensions are measured. After each dimension meets the requirements of the drawing, it is a qualified wax mold.
[0029] 2. Mixed slurry:
[0030] Binder: Silica sol with a silica content of 30% and a pH of 6 to 8: 96%,
[0031] YQ-C01 organic defoamer: 0.5%,
[0032] YQ-D01 organic wetting agent: 0.5%,
[0033] Pure water: 3%.
[0034] Surface layer slurry: mix calcined alumina powder (300-325 mesh part...
Embodiment 2
[0044] Example 2: A method for preparing a mold shell for Be-34%Al-4%Ni alloy precision casting:
[0045] 1. Prepare the wax mold required for the product according to the existing method. First, preheat the wax material in the wax injection machine to the range of 65 ℃ ~ 70 ℃, then fill the wax material into the metal steel mold within 15 ~ 30 seconds, and after holding the pressure for 30 ~ 60 seconds, put The formed wax pieces are taken out from the metal steel mold and placed in a normal temperature water pool. After cooling for 1 to 2 hours, the dimensions are measured. After each dimension meets the requirements of the drawing, it is a qualified wax mold.
[0046] 2. Mixed slurry:
[0047] Binder: Binder: Silica sol with a silica content of 30% and a pH of 6 to 8: 97%,
[0048] YQ-C01 organic defoamer: 0.5%,
[0049] YQ-D01 organic wetting agent: 0.5%,
[0050] Pure water: 2%.
[0051] Surface layer slurry: mix calcined alumina powder ...
Embodiment 3
[0061] Example 3: A method for preparing a mold shell for Be-34%Al-4%Ni alloy precision casting:
[0062] 1. Prepare the wax mold required for the product according to the existing method. First, preheat the wax material in the wax injection machine to the range of 65 ℃ ~ 70 ℃, then fill the wax material into the metal steel mold within 15 ~ 30 seconds, and after holding the pressure for 30 ~ 60 seconds, put The formed wax pieces are taken out from the metal steel mold and placed in a normal temperature water pool. After cooling for 1 to 2 hours, the dimensions are measured. After each dimension meets the requirements of the drawing, it is a qualified wax mold.
[0063] 2. Mixed slurry:
[0064] Binder: Binder: Silica sol with a silica content of 30% and a pH of 6 to 8: 94%,
[0065] YQ-C01 organic defoamer: 1%,
[0066] YQ-D01 organic wetting agent: 1%,
[0067] Pure water: 4%.
[0068] Surface layer slurry: mix calcined alumina powder (300...
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