ATE69185T1 - PROCESS FOR CURING MOLDED ELEMENTS, IN PARTICULAR CASTING MOLDS OR CORE MADE OF MOLDING SAND. - Google Patents
PROCESS FOR CURING MOLDED ELEMENTS, IN PARTICULAR CASTING MOLDS OR CORE MADE OF MOLDING SAND.Info
- Publication number
- ATE69185T1 ATE69185T1 AT89200139T AT89200139T ATE69185T1 AT E69185 T1 ATE69185 T1 AT E69185T1 AT 89200139 T AT89200139 T AT 89200139T AT 89200139 T AT89200139 T AT 89200139T AT E69185 T1 ATE69185 T1 AT E69185T1
- Authority
- AT
- Austria
- Prior art keywords
- passed
- mould
- sorption
- catalyst
- gas mixture
- Prior art date
Links
- 238000005266 casting Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 239000003110 molding sand Substances 0.000 title 1
- 238000001179 sorption measurement Methods 0.000 abstract 7
- 239000000203 mixture Substances 0.000 abstract 4
- 239000003054 catalyst Substances 0.000 abstract 3
- 229920006395 saturated elastomer Polymers 0.000 abstract 2
- 239000011230 binding agent Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000000206 moulding compound Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 239000004576 sand Substances 0.000 abstract 1
- 239000002594 sorbent Substances 0.000 abstract 1
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
- B22C9/123—Gas-hardening
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
For hardening shaped articles, especially casting moulds and cores made of moulding sand, the method employed is one in which a catalyst/air mixture is passed through a moulding compound (1), to which a curing binder has been added, and the gas mixture escaping from the mould is passed through an adsorption apparatus (16, 17) which separates the catalyst from the air stream. For recovery and reuse of the catalyst, the gas mixture escaping from the mould is passed in a cyclical sequence through two sorption columns (16, 17) arranged in series, until the sorbent of the first sorption column (16) is saturated, and the fresh air fed to the mould simultaneously flows through a sorption column (13) saturated in a previous cycle. For this purpose, the sorption columns are interchanged, with the result that, in a following cycle, the gas mixture escaping from the mould is passed first of all through the second sorption column connected downstream in the preceding cycle, and then through a sorption column desorbed in a preceding cycle. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP89200139A EP0379741B1 (en) | 1989-01-24 | 1989-01-24 | Method for hardening shaped articles, especially casting moulds and cores made of moulding sand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE69185T1 true ATE69185T1 (en) | 1991-11-15 |
Family
ID=8202303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT89200139T ATE69185T1 (en) | 1989-01-24 | 1989-01-24 | PROCESS FOR CURING MOLDED ELEMENTS, IN PARTICULAR CASTING MOLDS OR CORE MADE OF MOLDING SAND. |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0379741B1 (en) |
| AT (1) | ATE69185T1 (en) |
| DE (1) | DE58900437D1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4225436C1 (en) * | 1992-07-31 | 1993-11-25 | Daimler Benz Ag | Process for the catalytic hardening of sand moldings |
| DE19503832C2 (en) * | 1994-02-04 | 1999-01-28 | Sommer Tech Entwicklungen Gmbh | Method and device for producing sand cores for metal casting |
| DE19549422C2 (en) * | 1994-02-04 | 2001-05-10 | Sommer Tech Entwicklungen Gmbh | Mfg. cores for sand casting |
| DE19927107A1 (en) * | 1999-06-14 | 2000-12-21 | Fischer Georg Gmbh & Co Kg | Device to reduce odorous emissions from a casting installation has a container for bio catalysts and/or enzymes and active region in which the bio catalysts and/or the enzymes interact with the substances causing the odorous emissions |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3116130A (en) * | 1959-02-27 | 1963-12-31 | Phillips Petroleum Co | Separation of gases and liquids by sorption |
| US3919162A (en) * | 1974-03-15 | 1975-11-11 | Airco Inc | Catalyst supply and reclamation in cold box core making processes |
| DE2621153A1 (en) * | 1976-05-13 | 1977-11-24 | Daimler Benz Ag | Hardening sand cores by cold box process - where catalyst is reclaimed from carrier gas after use |
| EP0128974B1 (en) * | 1983-06-16 | 1986-10-15 | Harald Steffens Giessereimaschinen | Moulding machine for producing moulds or cores from moulding sand |
-
1989
- 1989-01-24 AT AT89200139T patent/ATE69185T1/en active
- 1989-01-24 DE DE8989200139T patent/DE58900437D1/en not_active Expired - Fee Related
- 1989-01-24 EP EP89200139A patent/EP0379741B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE58900437D1 (en) | 1991-12-12 |
| EP0379741B1 (en) | 1991-11-06 |
| EP0379741A1 (en) | 1990-08-01 |
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