GB2003421A - Mould assembly and method of making the same - Google Patents

Mould assembly and method of making the same

Info

Publication number
GB2003421A
GB2003421A GB7834432A GB7834432A GB2003421A GB 2003421 A GB2003421 A GB 2003421A GB 7834432 A GB7834432 A GB 7834432A GB 7834432 A GB7834432 A GB 7834432A GB 2003421 A GB2003421 A GB 2003421A
Authority
GB
United Kingdom
Prior art keywords
mold
sections
mold sections
cast
hub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB7834432A
Other versions
GB2003421B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US05/828,492 external-priority patent/US4170256A/en
Application filed by TRW Inc filed Critical TRW Inc
Publication of GB2003421A publication Critical patent/GB2003421A/en
Application granted granted Critical
Publication of GB2003421B publication Critical patent/GB2003421B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

A segmented mold assembly (30) is utilized to cast a turbine engine component having a relatively heavy hub from which relatively light vanes project. The mold assembly includes a plurality of sections (38) (58) (76) which are formed of a ceramic mold material and are interconnected at flange joints. The mold sections are advantageously formed by repetitively dipping patterns in a slurry of liquid ceramic mold material to form wet coatings on the patterns. These wet coatings are dried and separated from the patterns to form the mold sections. The mold sections (38) which are used to cast the vanes retard the removal of heat from the vanes to provide time for the hub to solidify. This can be accomplished by using relatively thick walled mold sections to form the mold cavities in which vanes are cast and relatively thin walled mold sections to form the cavity in which the hub is cast. This could also be accomplished by forming the vane mold sections of material having a relatively low rate of heat removal and the hub mold sections of a material having a relatively high rate of heat removal. <IMAGE>
GB7834432A 1977-08-29 1978-08-24 Mould assembly and method of making the same Expired GB2003421B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/828,492 US4170256A (en) 1976-01-29 1977-08-29 Mold assembly and method of making the same

Publications (2)

Publication Number Publication Date
GB2003421A true GB2003421A (en) 1979-03-14
GB2003421B GB2003421B (en) 1982-02-10

Family

ID=25251965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7834432A Expired GB2003421B (en) 1977-08-29 1978-08-24 Mould assembly and method of making the same

Country Status (10)

Country Link
JP (1) JPS5495921A (en)
BE (1) BE870003A (en)
CA (1) CA1109633A (en)
CH (1) CH635765A5 (en)
DE (1) DE2837286C2 (en)
FR (1) FR2401721A1 (en)
GB (1) GB2003421B (en)
IL (1) IL55283A (en)
IT (1) IT1098295B (en)
SE (1) SE439126B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3479925A3 (en) * 2012-12-14 2019-08-14 United Technologies Corporation Multi-shot casting
CN113828734A (en) * 2021-09-16 2021-12-24 江苏金诺炉辊有限公司 Gating system and investment casting process of high-temperature alloy four-way flange

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806987A1 (en) * 1988-03-03 1989-09-14 Thyssen Industrie Method for the production of castings by the lost-wax method
DE102007014744A1 (en) * 2007-03-28 2008-10-02 Rwth Aachen Mold and method for the casting production of a cast piece

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598167A (en) * 1968-11-01 1971-08-10 United Aircraft Corp Method and means for the production of columnar-grained castings
US3669177A (en) * 1969-09-08 1972-06-13 Howmet Corp Shell manufacturing method for precision casting
US3724531A (en) * 1971-01-13 1973-04-03 United Aircraft Corp Mold for casting single crystal articles
JPS5161433A (en) * 1974-11-27 1976-05-28 Kubota Ltd SEIMITSUCHUZOYOIGATANO SAKUSEIHO
GB1509298A (en) * 1975-09-20 1978-05-04 Rolls Royce Mould insulation and a method of insulating a mould
US4066116A (en) * 1976-01-29 1978-01-03 Trw Inc. Mold assembly and method of making the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3479925A3 (en) * 2012-12-14 2019-08-14 United Technologies Corporation Multi-shot casting
US10456830B2 (en) 2012-12-14 2019-10-29 United Technologies Corporation Multi-shot casting
US10576537B2 (en) 2012-12-14 2020-03-03 United Technologies Corporation Multi-shot casting
CN113828734A (en) * 2021-09-16 2021-12-24 江苏金诺炉辊有限公司 Gating system and investment casting process of high-temperature alloy four-way flange

Also Published As

Publication number Publication date
FR2401721A1 (en) 1979-03-30
BE870003A (en) 1978-12-18
DE2837286A1 (en) 1979-03-15
JPS5495921A (en) 1979-07-28
IL55283A (en) 1981-01-30
FR2401721B1 (en) 1983-09-23
GB2003421B (en) 1982-02-10
SE439126B (en) 1985-06-03
CH635765A5 (en) 1983-04-29
CA1109633A (en) 1981-09-29
DE2837286C2 (en) 1984-05-17
IT1098295B (en) 1985-09-07
SE7809046L (en) 1979-03-01
IT7827071A0 (en) 1978-08-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee