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公开(公告)号:SG136863A1
公开(公告)日:2007-11-29
申请号:SG2007019656
申请日:2007-03-16
Applicant: UNITED TECHNOLOGIES CORP
Inventor: BOCHIECHIO MARIO P , BULLIED STEVEN J , KENNARD LEA D , VERNER CARL R , JOHN J MARCIN JR
Abstract: In an investment casting process, a composite core is formed as a combination of ceramic casting core element and a non-ceramic casting core element. The core is heated in an oxidative atmosphere and then heated in a non-oxidative atmosphere.
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公开(公告)号:SG131010A1
公开(公告)日:2007-04-26
申请号:SG2006053284
申请日:2006-08-07
Applicant: UNITED TECHNOLOGIES CORP
Inventor: TURKINGTON MICHAEL K , BULLIED STEVEN J , JOHN J MARCIN JR , KENNARD LEA D , VERNER CARL R
Abstract: A pattern with internal cores for creating a hollow component is composed of a first pattern half having one or more first self- locating features; a second pattern half having one or more second self-locating features; and one or more cores disposed in contact with the one or more first self- locating features and the one or more second self-locating features. The method for its manufacture includes the steps of creating a first pattern half having one or more first self-locating features; creating a second pattern half having one or more second self- locating features; providing one or more cores; and assembling the pattern by engaging the one or more first self-locating features and the one or more second self- locating features about the one or more cores.
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