Investment casting - Knocking out ceramic at the closed impeller waterway sidelines
Investment casting - Knocking out ceramic at the closed impeller waterway sidelines
(OP)
Dear all,
Could any one share information about making easier of removing fused ceramics (vane area). May be by chemically solvent or any thing?
Thank you
Kusuma
Could any one share information about making easier of removing fused ceramics (vane area). May be by chemically solvent or any thing?
Thank you
Kusuma





RE: Investment casting - Knocking out ceramic at the closed impeller waterway sidelines
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RE: Investment casting - Knocking out ceramic at the closed impeller waterway sidelines
I'm just one step away from being rich, all I need now is money.
( read somewhere on the internet)
RE: Investment casting - Knocking out ceramic at the closed impeller waterway sidelines
Then we re-desinged the cores to allow them to fracture easier.
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Plymouth Tube
RE: Investment casting - Knocking out ceramic at the closed impeller waterway sidelines
RE: Investment casting - Knocking out ceramic at the closed impeller waterway sidelines
The material of the object is 316L Stainless steel, we still use the manually chisels + hammer + pneumatic vibrating knockout machine+ gun blast (steel shot).
@EdStainless : Hot alkali, could you please write the formula (supplier if available)?
@arunmrao : ceramics core is an option, but we also redesign the mold.. so im looking for other methods if available
Thank you guys, I hope theres more.. Ill try the chemically method for 1st step.
Warm Regards,
Kusuma P
RE: Investment casting - Knocking out ceramic at the closed impeller waterway sidelines
Do not use such primitive methods as chisels, sharp instruments they will damage the internal veins, leading to rejection. Ceramic cores is the answer, sand cores will not be a good solution for such applications.
Try using some of the alkalis,if it works good.
I'm just one step away from being rich, all I need now is money.
( read somewhere on the internet)
RE: Investment casting - Knocking out ceramic at the closed impeller waterway sidelines
Yes it is primitive, time consuming and dangering the object. I would like to improve this.
Thank you so much
Kusuma
RE: Investment casting - Knocking out ceramic at the closed impeller waterway sidelines
Regard