FI902823A - Process for producing mold bodies of mold sand - Google Patents
Process for producing mold bodies of mold sand Download PDFInfo
- Publication number
- FI902823A FI902823A FI902823A FI902823A FI902823A FI 902823 A FI902823 A FI 902823A FI 902823 A FI902823 A FI 902823A FI 902823 A FI902823 A FI 902823A FI 902823 A FI902823 A FI 902823A
- Authority
- FI
- Finland
- Prior art keywords
- mould
- press
- mold
- sand
- depressions
- Prior art date
Links
Landscapes
- Casting Devices For Molds (AREA)
Abstract
The invention relates to a method for the manufacture of mould cores, according to which fresh sand is used as moulding sand in a press mould, and the fresh sand, with the use of a hydraulic press 1, undergoes pre-compression in the press mould followed by final compression. In this way it is possible to produce even complex mould cores efficiently and free from defects. The invention also relates to a press with pressing tool with mould depressions insertable into the press mould, and a press table. According to the invention the press comprises a hydraulic press 1, the pressing tool 8 of which with its mould depressions 9 has ducts 11 leading to the mould depressions 9 and alternately connectable to a negative or positive pressure. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI902823A FI92294C (en) | 1990-06-06 | 1990-06-06 | A method of making moldings from mold sand |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI902823A FI92294C (en) | 1990-06-06 | 1990-06-06 | A method of making moldings from mold sand |
FI902823 | 1990-06-06 |
Publications (4)
Publication Number | Publication Date |
---|---|
FI902823A0 FI902823A0 (en) | 1990-06-06 |
FI902823A true FI902823A (en) | 1991-12-07 |
FI92294B FI92294B (en) | 1994-07-15 |
FI92294C FI92294C (en) | 1994-10-25 |
Family
ID=8530576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI902823A FI92294C (en) | 1990-06-06 | 1990-06-06 | A method of making moldings from mold sand |
Country Status (1)
Country | Link |
---|---|
FI (1) | FI92294C (en) |
-
1990
- 1990-06-06 FI FI902823A patent/FI92294C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI92294B (en) | 1994-07-15 |
FI92294C (en) | 1994-10-25 |
FI902823A0 (en) | 1990-06-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB | Publication of examined application | ||
MM | Patent lapsed | ||
MM | Patent lapsed |
Owner name: GEORG FISCHER AG |