FR1243703A - Process for preparing refractory molds of the permanent type - Google Patents

Process for preparing refractory molds of the permanent type

Info

Publication number
FR1243703A
FR1243703A FR814158A FR814158A FR1243703A FR 1243703 A FR1243703 A FR 1243703A FR 814158 A FR814158 A FR 814158A FR 814158 A FR814158 A FR 814158A FR 1243703 A FR1243703 A FR 1243703A
Authority
FR
France
Prior art keywords
slurry
drying
silicon oxide
room temperature
silicate
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
FR814158A
Other languages
French (fr)
Inventor
Edward Joseph Mellen Jr
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 filed Critical
Application granted granted Critical
Publication of FR1243703A publication Critical patent/FR1243703A/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
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening
    • 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
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/44—Plastic and nonmetallic article shaping or treating: processes using destructible molds or cores in molding processes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

879,388. Making shell moulds. MELLEN, E. J. May 29, 1959 [June 17, 1958], No. 18433/59. Class 87(2). A refractory mould for casting metal is made by dipping a destructible pattern of e.g. wax, polystyrene or acrylic or methacrylic resins in a slurry, removing the pattern from the slurry and drying it in an air stream which has .a wet bulb temperature of room temperature and a dry bulb temperature not less than 5‹F. above room temperature, and then after drying, repeating the process until several layers have been built up. Successive coats may be dried at increased dry bulb temperatures e.g. 5‹F. per layer. The layers (except the last) may be dusted with refractory particles, e.g. silicon oxide glass. The slurry may be made from quartz, alumina, silicon carbide, graphite, aluminium silicate, flint, zirconium silicate, and silicon oxide glass, with colloidal silica or ethyl silicate as a binder, methyl cellulose as a thickener, and water or alcohol.
FR814158A 1958-06-17 1959-12-24 Process for preparing refractory molds of the permanent type Expired FR1243703A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US742554A US2932864A (en) 1958-06-17 1958-06-17 Method of making and drying shell-type refractory molds
CH428860A CH366357A (en) 1958-06-17 1960-04-14 Process for preparing a permanent refractory mold

Publications (1)

Publication Number Publication Date
FR1243703A true FR1243703A (en) 1960-10-14

Family

ID=25695134

Family Applications (1)

Application Number Title Priority Date Filing Date
FR814158A Expired FR1243703A (en) 1958-06-17 1959-12-24 Process for preparing refractory molds of the permanent type

Country Status (5)

Country Link
US (1) US2932864A (en)
CH (1) CH366357A (en)
DE (1) DE1204780B (en)
FR (1) FR1243703A (en)
GB (1) GB879388A (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL235063A (en) * 1958-01-13
US3132388A (en) * 1959-08-26 1964-05-12 Corning Glass Works Method of removing the pattern from a thin shell investment mold
US3070861A (en) * 1960-03-10 1963-01-01 Philadelphia Quartz Co Molds utilizing acid hydrolysed isopropyl silicates as binders
US3177085A (en) * 1960-07-27 1965-04-06 Nalco Chemical Co Silica sol-masking in galvanizing process
GB988454A (en) * 1962-12-19 1965-04-07 Aherne Heron John Method of and apparatus for forming cast objects
US3231946A (en) * 1962-12-28 1966-02-01 Prec Metalsmiths Inc Apparatus for forming ceramic shell molds
US3171174A (en) * 1963-06-06 1965-03-02 Jr Edward J Mellen Frozen-mercury process for making shell molds
US3257693A (en) * 1964-06-19 1966-06-28 Trw Inc Method and pattern material for precision investment casting
US3307232A (en) * 1965-01-04 1967-03-07 Edward J Mellen Jr Method and apparatus for forming shell molds by the use of a fluidized bed drying system
US3824113A (en) * 1972-05-08 1974-07-16 Sherwood Refractories Method of coating preformed ceramic cores
US3850224A (en) * 1973-07-30 1974-11-26 Sherwood Refractories Process and apparatus for drying shell molds
US4114285A (en) * 1976-08-09 1978-09-19 United Technologies Corporation Method and apparatus for drying investment casting molds
US4173079A (en) * 1976-08-09 1979-11-06 United Technologies Corporation Method and apparatus for drying investment casting molds
US4265296A (en) * 1978-12-21 1981-05-05 Caterpillar Tractor Co. Investment casting mold forming apparatus
US4727929A (en) * 1985-10-11 1988-03-01 Precision Metalsmiths, Inc. Investment shell molding apparatus and method
US4966225A (en) * 1988-06-13 1990-10-30 Howmet Corporation Ceramic shell mold for investment casting and method of making the same
US5730929A (en) * 1997-03-06 1998-03-24 Eastman Kodak Company Low pressure injection molding of fine particulate ceramics and its composites at room temperature
US6749006B1 (en) 2000-10-16 2004-06-15 Howmet Research Corporation Method of making investment casting molds
US6845811B2 (en) 2002-05-15 2005-01-25 Howmet Research Corporation Reinforced shell mold and method
US7984566B2 (en) * 2003-10-27 2011-07-26 Staples Wesley A System and method employing turbofan jet engine for drying bulk materials
US7258158B2 (en) * 2004-07-28 2007-08-21 Howmet Corporation Increasing stability of silica-bearing material
DE102004048451A1 (en) * 2004-10-05 2006-04-06 Mk Technology Gmbh Method and system for producing a shell mold, in particular for investment casting
AT9203U1 (en) * 2006-04-06 2007-06-15 Econ Maschb Und Steuerungstech DRYING DEVICE
JP4901395B2 (en) * 2006-09-26 2012-03-21 富士フイルム株式会社 Drying method of coating film
US8006744B2 (en) * 2007-09-18 2011-08-30 Sturm, Ruger & Company, Inc. Method and system for drying casting molds
CN103418753A (en) * 2012-05-18 2013-12-04 无锡蠡湖叶轮制造有限公司 Energy-saving solidifying pipeline for alcoholic-group coating
CN107470562A (en) * 2017-08-22 2017-12-15 安徽大卫模具有限公司 A kind of lost wax casting technique
CN108480569A (en) * 2018-03-16 2018-09-04 泰州鑫宇精工股份有限公司 Lost Wax Casting shell fast equipment for drying and technique

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE939529C (en) * 1941-03-12 1956-02-23 Johannes Croning Process for the production of molds or cores
US2367648A (en) * 1943-04-02 1945-01-16 Illinois Clay Products Co Preparation of dry sand molds
LU28936A1 (en) * 1944-05-31
US2509396A (en) * 1945-03-26 1950-05-30 Carl F Mayer Drying apparatus for molds
US2518040A (en) * 1946-07-09 1950-08-08 Selas Corp Of America Apparatus for producing investment molds
NL157622B (en) * 1950-11-28 Shell Int Research PROCEDURE FOR HARDENING EPOXY RESIN COMPOSITIONS.
US2815552A (en) * 1951-11-15 1957-12-10 Vickers Electrical Co Ltd Method of making a mold by the lost-wax process
US2806269A (en) * 1952-09-11 1957-09-17 Rolls Royce Moulds for precision casting
US2759232A (en) * 1953-01-02 1956-08-21 Arwood Prec Castings Corp Process of removing wax, plastic, and like pattern materials from thin shell molds
US2756475A (en) * 1953-02-24 1956-07-31 Gen Motors Corp Investment mold and core assembly

Also Published As

Publication number Publication date
CH366357A (en) 1962-12-31
US2932864A (en) 1960-04-19
DE1204780B (en) 1965-11-11
GB879388A (en) 1961-10-11

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