GB1388704A - Method and apparatus for drying investment casting shell moulds - Google Patents

Method and apparatus for drying investment casting shell moulds

Info

Publication number
GB1388704A
GB1388704A GB4099172A GB4099172A GB1388704A GB 1388704 A GB1388704 A GB 1388704A GB 4099172 A GB4099172 A GB 4099172A GB 4099172 A GB4099172 A GB 4099172A GB 1388704 A GB1388704 A GB 1388704A
Authority
GB
United Kingdom
Prior art keywords
desiccant
tank
moulds
investment casting
fed
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
GB4099172A
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.)
ChampionX LLC
Original Assignee
Nalco Chemical Co
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 Nalco Chemical Co filed Critical Nalco Chemical Co
Publication of GB1388704A publication Critical patent/GB1388704A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Products (AREA)
  • Casting Devices For Molds (AREA)
  • Silicon Compounds (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

1388704 Drying investment casting moulds NALCO CHEMICAL CO 4 Sept 1972 [10 Dec 1971] 40991/72 Heading B5A [Also in Division F4] Investment casting shell moulds are dried after coating and stuccoing by moving them through a fluidized bed of desiccant material, the desiccant being continuously removed, reactivated and returned to the bed in optimum condition for absorbing moisture from the slurry on the moulds. The desiccant, e.g. silica gel, is located in a tank 19, Fig. 2, above a porous plate to the space below which compressed air is supplied. The shell moulds are moved by gravity and pushers on a mono-rail conveyer 32 through coating and dipping stations, down into, through and up out of the tank 19. Desiccant is extracted from the tank through an inverted funnel and fed by a conduit 66 to a vertical tube 10, Fig. 5, leading to a hopper 74, hot gas and compressed air being supplied to the tube by inlet 71 and line 72 respectively. The reactivated desiccant is fed from the hopper 74 through an outlet 79 and a pipe into a cooling tower on to a porous plate below which compressed air is fed and in which rests an inverted funnel connected to a conduit leading back to the tank.
GB4099172A 1971-12-10 1972-09-04 Method and apparatus for drying investment casting shell moulds Expired GB1388704A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20677171A 1971-12-10 1971-12-10

Publications (1)

Publication Number Publication Date
GB1388704A true GB1388704A (en) 1975-03-26

Family

ID=22767885

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4099172A Expired GB1388704A (en) 1971-12-10 1972-09-04 Method and apparatus for drying investment casting shell moulds

Country Status (5)

Country Link
US (1) US3755915A (en)
CA (1) CA989588A (en)
DE (1) DE2246459C3 (en)
FR (1) FR2162354B1 (en)
GB (1) GB1388704A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758313A (en) * 1971-03-24 1973-09-11 R Scott Dehydration and packaging of foodstuffs by dialysis
US4888213A (en) * 1988-04-19 1989-12-19 Brunswick Corporation Method and apparatus for drying coatings on articles
DE3902995C1 (en) * 1989-02-02 1990-08-09 Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen, De Apparatus and process for drying the surface layer of a concrete structure
US5577333A (en) * 1994-12-21 1996-11-26 The Dow Chemical Company Solid media parts drying using fluidized beds
US5885493A (en) * 1997-11-04 1999-03-23 Lockheed Martin Energy Research Corporation Method of drying articles
US6749006B1 (en) * 2000-10-16 2004-06-15 Howmet Research Corporation Method of making investment casting molds
US20070266585A1 (en) * 2005-04-16 2007-11-22 Michael Arno Portable Disposable Air/Gas Dryer
US8087450B2 (en) 2007-01-29 2012-01-03 Evonik Degussa Corporation Fumed metal oxides for investment casting
US8006744B2 (en) * 2007-09-18 2011-08-30 Sturm, Ruger & Company, Inc. Method and system for drying casting molds

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE480657A (en) * 1944-05-31
US3254625A (en) * 1960-03-31 1966-06-07 Cecil W Armstrong Apparatus for producing a fluidized bed of pulverant material
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

Also Published As

Publication number Publication date
DE2246459B2 (en) 1974-03-14
DE2246459C3 (en) 1974-10-17
CA989588A (en) 1976-05-25
FR2162354A1 (en) 1973-07-20
US3755915A (en) 1973-09-04
DE2246459A1 (en) 1973-06-14
FR2162354B1 (en) 1975-03-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee