Aluminasol bonded alumina mould case and manufacturing method thereof
A kind of alumina and aluminum sol technology, applied in the direction of manufacturing tools, casting equipment, metal processing equipment, etc., can solve problems such as waste, casting surface pollution, damage to casting quality, etc., to achieve controllable process parameters and meet thermal shock resistance , the effect of not easily deformed
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[0064] Example 1:
[0065] Aluminum sol bonded alumina mold shell for directional solidification DD6 alloy (composition as shown in the table below)
[0066] ingredient
[0067] The first step: match the shell slurry
[0068] The shell slurry is made of aluminum sol (selected LA-25 aluminum sol produced by Zibo Jinqi Chemical), aluminum oxide powder, Cr 2 O 3 (Mineralizer), ammonium polyacrylate (dispersant), n-octanol (defoamer) and JFC (wetting agent), the content of each component is shown in the table below:
[0069] ingredient
[0070] Step 2: Prepare the mold shell
[0071] (A) Immerse the wax mold in the shape of a casting into the slurry prepared in the first step for 5 seconds and then take it out, and sprinkle with 80 mesh alumina sand to form the first preform;
[0072] (B) Place the first preform in a constant temperature and humidity environment with a temperature of 20° C. and a relative humidity of 60% for drying for 20 hours to obtain a second preform;
[0073] (C) ...
Example Embodiment
[0092] Example 2:
[0093] Pouring Ni 3 Aluminum sol bonded alumina mold shell for Al-based alloy (the composition is shown in the table below)
[0094] ingredient
[0095] The first step: match the shell slurry
[0096] The shell slurry is made of aluminum sol (select LA-20 type aluminum sol produced by Zibo Jinqi Chemical), aluminum oxide powder, MgO (mineralizer), ammonium polyacrylate (dispersant), n-octanol (defoamer) And JFC (wetting agent) composition; the content of each component is shown in the following table:
[0097] ingredient
[0098] Step 2: Prepare the mold shell
[0099] (A) Immerse the wax mold in the shape of a casting into the slurry prepared in the first step for 2 seconds, then take it out, and sprinkle with 80 mesh alumina sand to form the first preform;
[0100] (B) Place the first preform in a constant temperature and humidity environment with a temperature of 35° C. and a relative humidity of 70% and dry for 20 hours to obtain a second preform;
[0101] ...
Example Embodiment
[0117] Example 3:
[0118] Aluminum sol bonded alumina mold shell for directional solidification TMS75 alloy (composition as shown in the table below)
[0119] ingredient
[0120] The first step: match the shell slurry
[0121] The shell slurry is made of aluminum sol (select LA-25 type aluminum sol produced by Zibo Jinqi Chemical), aluminum oxide powder, TiO (mineralizer), ammonium polyacrylate (dispersant), n-octanol (defoamer) And JFC (wetting agent) composition; the content of each component is shown in the following table:
[0122] ingredient
[0123] Step 2: Prepare the mold shell
[0124] (A) Immerse the wax mold in the shape of a casting into the slurry prepared in the first step for 8 seconds, then take it out, and sprinkle with 80 mesh alumina sand to form the first preform;
[0125] (B) The first preform is placed in a constant temperature and humidity environment with a temperature of 25° C. and a relative humidity of 65% and dried for 25 hours to obtain a second pre...
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