Method for indirectly manufacturing low-melting-point alloy mold
An alloy and mold technology is applied in the field of preparation of low-melting alloy molds, which can solve the problems of complex process and precision loss, and achieve the effects of high precision requirements, low cost and fine surface patterns.
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[0028] Example 1
[0029] step 1: First, design the CAD model based on the physical object, and manufacture the laminated solid manufacturing prototype;
[0030] Step 2: Mix and stir the silicone rubber components in proportions, and make a silicone mold on a vacuum injection machine as an intermediate conversion mold;
[0031] Step 3: Weigh the gypsum mixture and water in proportion to make gypsum cores on the gypsum vacuum grouting equipment;
[0032] Step 4: Manufacture ceramic upper body and lower body;
[0033] Step 5: Combined box pouring, pouring tin-indium alloy melt, alloy solidification and cooling, to obtain tin-indium alloy mold;
[0034] The composition and ratio of the tin-indium alloy are respectively: tin accounts for 90 wt%, and indium accounts for 10 wt%.
[0035] The preparation process of the gypsum core in step 3 is specifically:
[0036] (1) Gypsum material ratio
[0037] The proportion of gypsum mixture: white cement 7wt%, diatomaceous earth, 3wt%, the balance i...
Example Embodiment
[0045] Example 2
[0046] step 1: First, design the CAD model based on the physical object, and manufacture the laminated solid manufacturing prototype;
[0047] Step 2: Mix and stir the silicone rubber components in proportions, and make a silicone mold on a vacuum injection machine as an intermediate conversion mold;
[0048] Step 3: Weigh the gypsum mixture and water in proportion to make gypsum cores on the gypsum vacuum grouting equipment;
[0049] Step 4: Manufacture ceramic upper body and lower body;
[0050] Step 5: Combine box pouring, pouring tin-bismuth alloy melt, alloy solidification and cooling, to obtain tin-bismuth alloy mold;
[0051] The composition and proportion of the tin-bismuth alloy are as follows: tin accounts for 60 wt% and bismuth accounts for 40 wt%.
[0052] The preparation process of the gypsum core in step 3 is specifically:
[0053] (1) Gypsum material ratio
[0054] The proportion of gypsum mixture: white cement 8wt%, diatomaceous earth, 2wt%, the ba...
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