EP0125912A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method of producing ceramic parts
Assignee: NGK Insulators Ltd
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Filing: 1984-05-11
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Granted: —
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Expires: 2004-05-11
Abstract
Abstract Ceramic parts of complicated configurations with different thicknesses portions can be mass produced economically with high production yield and excellent quality by mixing a ceramic powder or metal powder with a molding additive, injection molding the mixture to form a green body of a desired shape, processing the green body to a substantially final configuration, removing the molding additive from the processed body to yield a processed and degreased body, and firing the processed and degreased body to sinter the same.
Inventors
- 👤 Shigenori Ito
- 👤 Takeyuki Mizuno
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 20:38
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/22; B22F3/225; B22F5/00; B22F5/04; C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/565; C04B35/58; C04B35/584; C04B35/591; C04B35/622; C04B35/626; C04B35/63; C04B35/632; C04B35/634; C04B35/63404; C04B35/638; F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/284; B22F2998/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
67 words
A method of producing ceramic parts which comprises mixing a ceramic powder or metal powder with a molding additive, injection molding the mixture to form a green body of a desired shape, processing the green body to a substantially final configuration, removing the molding additive from the processed body to yield a processed and degreased body, and firing the processed and degreased body to sinter the same.
Claim 2
Independent Claim
67 words
A method of producing ceramic parts which comprises mixing a ceramic powder or metal powder with a molding additive, injection molding the mixture to form a green body of a desired shape, processing the green body to a substantially final configuration, removing the molding additive from the processed body to yield a processed and degreased body, and firing the processed and degreased body to sinter the same.
Claim 3
Dependent Claim
19 words
A method according to claim 1, wherein the molding additive is at least one thermoplastic resin, wax or lubricant.
Claim 4
Dependent Claim
22 words
A method according to claim 2, wherein the thermoplastic resin is at least one of polystyrene, polypropyrene, polyethylene and ethylene-vinyl acetate copolymer.
Claim 5
Dependent Claim
39 words
A method according to claim 1, 2 or 3, wherein the mixture further contains, as sintering additive, at least one of MgO, Al 2 O 3 , Y 2 O 3 , ZrO 2 , CeO 2 and SrO.
Claim 6
Independent Claim
22 words
A method according to any one of claims 1 to 4, wherein the ceramic part is a rotor for a turbo charger.
Claim 7
Independent Claim
22 words
A method according to any one of claims 1 to 4, wherein the ceramic part is a rotor for a gas turbine.
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US2928733A
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DE2156592A1
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DE2651311A1
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DE2854612A1
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DE2931222A1
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FR2505816A1
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