AT81277B - Process for the production of casting molds and casting kerf processes for the production of casting molds and casting cores from fresh or used molding sand. from fresh or used molding sand. - Google Patents
Process for the production of casting molds and casting kerf processes for the production of casting molds and casting cores from fresh or used molding sand. from fresh or used molding sand.Info
- Publication number
- AT81277B AT81277B AT81277DA AT81277B AT 81277 B AT81277 B AT 81277B AT 81277D A AT81277D A AT 81277DA AT 81277 B AT81277 B AT 81277B
- Authority
- AT
- Austria
- Prior art keywords
- casting
- fresh
- production
- molding sand
- used molding
- Prior art date
Links
- 238000005266 casting Methods 0.000 title claims description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 4
- 239000003110 molding sand Substances 0.000 title claims description 4
- 239000011230 binding agent Substances 0.000 claims description 5
- 239000002641 tar oil Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 239000000944 linseed oil Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 2
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung von Gussformen und Gusskernen aus frischem oder gebrauchtem
Formsand.
EMI1.1
gedampft und pulverisiert als Bindemittel für frischen oder gebrauchten Form-bzw. Krn- sand zu verwenden. Die grossen Vorteile, welche die Verwendung dieser Ablaugen beim Formen bietet, wird zum Teil wieder aufgehoben durch die grosse Wasserlöslichkeit des Bindemittels, welche selbst durch scharfes Trocknen nicht aufgehoben werden kann. bo dass für einen grossen Teil von Spezialgusssachen die Verwendung diese, billigen Stoffes ausgeschlossen ist und die Verwendung von Leinölen und anderen teuren, wasserabstossenden Bindemitteln erforderlich ist.
Es wurde nun gefunden, dass man die Ablauge auch für derartige Formen und Kerne. welche eine hohe Beständigkeit gegen Feuchtigeit haben müssen, mit grossem Vorteile verwenden kann, wenn man dieselben mit Teerölen mischt. Dieses Teeröl geht mit der Sulfitlauge eine vollkommene Lösung ein und die mit einer derartigen Lösung hergestellten Formen oder Kerne erhalten nach einer Trocknung von 50 bis 100 C eine sehr hohe Widerstandsfähigkeit gegen feuchte Einflüsse, so dass es möglich ist, mit dieser Mischung die jetzt gebräuchlichen Bindemittel, wie Leinöl usw., vollkommen zu ersetzen.
Das prozentuale Verhältnis der Mischung zwischen Teerölen und Sulfitablauge, auch
EMI1.2
verhältnissen.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the production of casting molds and casting cores from fresh or used
Molding sand.
EMI1.1
steamed and pulverized as a binder for fresh or used form or. Krn- sand to be used. The great advantages offered by the use of these waste liquors during molding are partially canceled out by the great water solubility of the binding agent, which cannot be canceled even by thorough drying. bo that for a large part of special cast items the use of this cheap material is excluded and the use of linseed oils and other expensive, water-repellent binders is required.
It has now been found that the waste liquor can also be used for such forms and cores. which must have a high resistance to moisture, can be used with great advantages if they are mixed with tar oils. This tar oil forms a perfect solution with the sulphite liquor and the molds or cores produced with such a solution, after drying at 50 to 100 ° C, have a very high resistance to moisture, so that it is possible to use the binders that are now used with this mixture such as linseed oil etc., to be completely replaced.
The percentage ratio of the mixture between tar oils and sulphite waste liquor, too
EMI1.2
conditions.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE81277X | 1918-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT81277B true AT81277B (en) | 1920-10-25 |
Family
ID=5639437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT81277D AT81277B (en) | 1918-12-07 | 1919-05-19 | Process for the production of casting molds and casting kerf processes for the production of casting molds and casting cores from fresh or used molding sand. from fresh or used molding sand. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT81277B (en) |
-
1919
- 1919-05-19 AT AT81277D patent/AT81277B/en active
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