GB1388704A - Method and apparatus for drying investment casting shell moulds - Google Patents
Method and apparatus for drying investment casting shell mouldsInfo
- 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
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)
- Drying Of Solid Materials (AREA)
- Casting Devices For Molds (AREA)
- Silicon Compounds (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.
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)
| 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 |
| JP5193229B2 (en) | 2007-01-29 | 2013-05-08 | エボニック デグサ ゲーエムベーハー | 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)
| 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 |
-
1971
- 1971-12-10 US US00206771A patent/US3755915A/en not_active Expired - Lifetime
-
1972
- 1972-09-04 GB GB4099172A patent/GB1388704A/en not_active Expired
- 1972-09-21 DE DE2246459A patent/DE2246459C3/en not_active Expired
- 1972-09-29 FR FR7234658A patent/FR2162354B1/fr not_active Expired
- 1972-11-09 CA CA156,127A patent/CA989588A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2162354A1 (en) | 1973-07-20 |
| CA989588A (en) | 1976-05-25 |
| DE2246459B2 (en) | 1974-03-14 |
| DE2246459A1 (en) | 1973-06-14 |
| FR2162354B1 (en) | 1975-03-14 |
| DE2246459C3 (en) | 1974-10-17 |
| US3755915A (en) | 1973-09-04 |
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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 |