GB1394872A - Investment shell moulds - Google Patents

Investment shell moulds

Info

Publication number
GB1394872A
GB1394872A GB2576572A GB2576572A GB1394872A GB 1394872 A GB1394872 A GB 1394872A GB 2576572 A GB2576572 A GB 2576572A GB 2576572 A GB2576572 A GB 2576572A GB 1394872 A GB1394872 A GB 1394872A
Authority
GB
United Kingdom
Prior art keywords
tungsten
hydrogen
molybdenum
mould
reducible
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.)
Expired
Application number
GB2576572A
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.)
Rem Metals Corp
Original Assignee
Rem Metals Corp
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
Application filed by Rem Metals Corp filed Critical Rem Metals Corp
Publication of GB1394872A publication Critical patent/GB1394872A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/165—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents in the manufacture of multilayered shell moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns

Abstract

1394872 Shell mould linings REM METALS CORP 2 June 1972 [3 June 1971] 25765/72 Heading B3F [Also in Divisions B5 and C3] An investment shell mould for casting titanium, zirconium and other reactive or refractory metals comprises superimposed layers of shell mould material and binder and a metallic barrier coating on the mould cavity face produced by the hydrogen reduction of at least one of the hydrogen-reducible compounds of tungsten and/or molybdenum. It is formed by successively dipcoating, stuccoing and drying a disposable pattern, the first dip coat including at least one tungsten or molybdenum compound reducible by hydrogen to the metal, the mould shell formed being heat-cured in hydrogen after removal from the pattern. The hydrogen-reducible compound may be a tungsten or molybdenum oxide, tungstic or molybdic acid or salts thereof, ammonium or lanthanum meta-tungstate, an alkoxide, halogenated alkoxide, halide or oxyhalide of molybdenum or tungsten. The first dip coat may include tungsten or molybdenum metal powder.
GB2576572A 1971-06-03 1972-06-02 Investment shell moulds Expired GB1394872A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14948571A 1971-06-03 1971-06-03

Publications (1)

Publication Number Publication Date
GB1394872A true GB1394872A (en) 1975-05-21

Family

ID=22530497

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2576572A Expired GB1394872A (en) 1971-06-03 1972-06-02 Investment shell moulds

Country Status (13)

Country Link
US (1) US3743003A (en)
JP (1) JPS5219163B1 (en)
AT (1) AT328106B (en)
BE (1) BE784269A (en)
CA (1) CA972129A (en)
CH (1) CH554204A (en)
DE (1) DE2226947A1 (en)
FR (1) FR2140189B1 (en)
GB (1) GB1394872A (en)
IE (1) IE36709B1 (en)
IT (1) IT958188B (en)
NL (1) NL7207552A (en)
SE (1) SE388138B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2309658A (en) * 1996-01-31 1997-08-06 Rolls Royce Plc A method of making an investment casting mould using CAD
CN114570882A (en) * 2022-03-10 2022-06-03 西部金属材料股份有限公司 Preparation method of tungsten surface layer shell

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159204A (en) * 1972-02-01 1979-06-26 Dynamit Nobel Aktiengesellschaft Process for the manufacture of refractory ceramic products
US4211567A (en) * 1972-02-01 1980-07-08 Dynamit Nobel Aktiengesellschaft Process for the manufacture of refractory ceramic products
US3802482A (en) * 1972-03-09 1974-04-09 United Aircraft Corp Process for making directionally solidified castings
US3892579A (en) * 1973-03-22 1975-07-01 American Dental Ass Adhesive refractory protective composition for investment casting
US3933190A (en) * 1974-12-16 1976-01-20 United Technologies Corporation Method for fabricating shell molds for the production of superalloy castings
US3972367A (en) * 1975-06-11 1976-08-03 General Electric Company Process for forming a barrier layer on ceramic molds suitable for use for high temperature eutectic superalloy casting
US4031945A (en) * 1976-04-07 1977-06-28 General Electric Company Process for making ceramic molds having a metal oxide barrier for casting and directional solidification of superalloys
FR2407770A1 (en) * 1977-11-07 1979-06-01 Rem Metals Corp Mould for casting reactive and refractory metals - has an inert facing contg. metal (oxy)fluoride, heat sink material and binder
US4533394A (en) * 1982-09-30 1985-08-06 Watts Claude H Process for manufacturing shell molds
US4703806A (en) * 1986-07-11 1987-11-03 Howmet Turbine Components Corporation Ceramic shell mold facecoat and core coating systems for investment casting of reactive metals
US6766850B2 (en) 2001-12-27 2004-07-27 Caterpillar Inc Pressure casting using a supported shell mold
AUPS329202A0 (en) * 2002-07-01 2002-07-18 Cast Centre Pty Ltd Coatings for articles used with molten metal
US7258158B2 (en) * 2004-07-28 2007-08-21 Howmet Corporation Increasing stability of silica-bearing material
US8932518B2 (en) 2012-02-29 2015-01-13 General Electric Company Mold and facecoat compositions
JP2015536828A (en) * 2012-10-18 2015-12-24 セルマトコ リミテッド Use of investment binders and investment binders
CN103537620A (en) * 2013-09-30 2014-01-29 中国航空工业集团公司北京航空材料研究院 Preparation method for precision casting of mold shell through directional solidification investment casting of titanium-aluminum based alloy
US9511417B2 (en) 2013-11-26 2016-12-06 General Electric Company Silicon carbide-containing mold and facecoat compositions and methods for casting titanium and titanium aluminide alloys
CN111545711B (en) * 2020-05-19 2022-04-05 中国科学院金属研究所 Preparation method of thermal shock resistant ceramic shell for high-temperature alloy LMC (melt-solidified metallic) directional solidification

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA868258A (en) * 1971-04-13 A. Brown Robert Investment shell molds for the high integrity precision casting of reactive and refractory metals, and methods for their manufacture
US1772490A (en) * 1926-01-13 1930-08-12 Dow Chemical Co Casting magnesium and alloys therefor
US3158912A (en) * 1962-08-09 1964-12-01 Gen Electric Controlled grain size casting method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2309658A (en) * 1996-01-31 1997-08-06 Rolls Royce Plc A method of making an investment casting mould using CAD
GB2309658B (en) * 1996-01-31 1998-05-06 Rolls Royce Plc A method of investment casting and a method of making an investment casting mould
US5868194A (en) * 1996-01-31 1999-02-09 Rolls-Royce Plc Method of investment casting and a method of making an investment casting mould
CN114570882A (en) * 2022-03-10 2022-06-03 西部金属材料股份有限公司 Preparation method of tungsten surface layer shell

Also Published As

Publication number Publication date
ATA456172A (en) 1975-05-15
IT958188B (en) 1973-10-20
IE36709B1 (en) 1977-02-02
JPS5219163B1 (en) 1977-05-26
DE2226947A1 (en) 1972-12-28
BE784269A (en) 1972-10-02
CH554204A (en) 1974-09-30
FR2140189A1 (en) 1973-01-12
CA972129A (en) 1975-08-05
SE388138B (en) 1976-09-27
AT328106B (en) 1976-03-10
US3743003A (en) 1973-07-03
IE36709L (en) 1972-12-03
NL7207552A (en) 1972-12-05
FR2140189B1 (en) 1977-12-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]