FR2189146A1 - Drying of moulded foundry cores - using heated air and pressure swings to purge the residual moisture - Google Patents
Drying of moulded foundry cores - using heated air and pressure swings to purge the residual moistureInfo
- Publication number
- FR2189146A1 FR2189146A1 FR7222283A FR7222283A FR2189146A1 FR 2189146 A1 FR2189146 A1 FR 2189146A1 FR 7222283 A FR7222283 A FR 7222283A FR 7222283 A FR7222283 A FR 7222283A FR 2189146 A1 FR2189146 A1 FR 2189146A1
- Authority
- FR
- France
- Prior art keywords
- drying
- air
- moulded
- core
- purge
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/06—Core boxes
-
- 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)
- Drying Of Gases (AREA)
Abstract
Foundry cores contained within walls which are porous to air and surrounded by an ancillary chamber which can be pressurised with preheated air which will therefore flow into the moulded sand to gather moisture. Pref. the drying chamber has a series of interconnected compartments equalising the pressure around and in the middle of several cores. The chamber may be evacuated to force the air through the core and recycle it to remove the water. Pref. the casings are made of glass reinforced epoxy resin the porous walls having holes with filters for passing air without losing sand or resin from the core. Significantly reduces core drying cycles compared with ambient temp. purging.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7222283A FR2189146A1 (en) | 1972-06-16 | 1972-06-16 | Drying of moulded foundry cores - using heated air and pressure swings to purge the residual moisture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7222283A FR2189146A1 (en) | 1972-06-16 | 1972-06-16 | Drying of moulded foundry cores - using heated air and pressure swings to purge the residual moisture |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2189146A1 true FR2189146A1 (en) | 1974-01-25 |
Family
ID=9100522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7222283A Pending FR2189146A1 (en) | 1972-06-16 | 1972-06-16 | Drying of moulded foundry cores - using heated air and pressure swings to purge the residual moisture |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2189146A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2509453A1 (en) * | 1981-07-07 | 1983-01-14 | Nippon Kokan Kk | APPARATUS FOR CURING AND HEATING A REFRACTORY TRIM |
US6505671B1 (en) * | 2000-12-28 | 2003-01-14 | Hayes Lemmerz International, Inc. | Method for producing a sand core |
-
1972
- 1972-06-16 FR FR7222283A patent/FR2189146A1/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2509453A1 (en) * | 1981-07-07 | 1983-01-14 | Nippon Kokan Kk | APPARATUS FOR CURING AND HEATING A REFRACTORY TRIM |
US6505671B1 (en) * | 2000-12-28 | 2003-01-14 | Hayes Lemmerz International, Inc. | Method for producing a sand core |
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