DE482576C - Process for the production of cast aluminum - Google Patents
Process for the production of cast aluminumInfo
- Publication number
- DE482576C DE482576C DEST40687D DEST040687D DE482576C DE 482576 C DE482576 C DE 482576C DE ST40687 D DEST40687 D DE ST40687D DE ST040687 D DEST040687 D DE ST040687D DE 482576 C DE482576 C DE 482576C
- Authority
- DE
- Germany
- Prior art keywords
- production
- cast aluminum
- molds
- aluminum
- mold
- 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
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/002—Castings of light metals
- B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
Description
Verfahren zur Herstellung von Aluminiumguß. Bei der Herstellung von Aluminiumguß, besonders Aluminium-Zinkguß, unter Verwendung von Sandformen kann man eine mittlere Schreckwirkung und, hierdurch eine Verbesserung der mechanischen Eigenschaften des erzeugten Gusses dadurch erzielen, daß man die Wärmeleitfähigkeit der Sandform durch Beimischung von Metallen oder Metallverbindungen in pulvriger oder körniger Form erhöht.Process for the production of cast aluminum. In the production of Cast aluminum, particularly aluminum-zinc cast, using sand molds one has a medium deterrent effect and, as a result, an improvement in the mechanical Achieve properties of the cast produced by the fact that the thermal conductivity the sand mold by adding metals or metal compounds in powder form or granular form.
Es hat sich nun gezeigt, daß an dieser Wirkung in hervorragendem Masse die Verdampfungswärme des im Formsand vorhandenen Wassers beteiligt ist. Bei der Verwendung von Formsand zur Herstellung von Formen ist das Vorhandensein des Wassers eine selbstverständliche Notwendigkeit, da nur feuchter Formsand genügende Bildsamkeit aufweist. Der bei Herstellung von Formen übliche Feuchtigkeitsgrad ist bei Anwendung der Metallbeimischung zugleich der für die Erzielung der mittleren Abschreckwirkung notwendige. Nachdem erkannt wurde, däß die in der Form vorhandene Feuchtigkeit eine wesentliche Einwirkung auf das Gießergebnis hat, ergab sich auch die Möglichkeit, Masseformen, also vor dem Gießen getrocknete Formen, zur Herstellung eines Aluminiumgusses zu verwenden, der besonders günstige mechanische Eigenschaften besitzt.It has now been shown that this effect is outstanding the heat of evaporation of the water present in the molding sand is involved. In the Using molding sand to make molds is the presence of the water an obvious necessity, since only moist molding sand is sufficient plasticity having. The usual level of humidity in the manufacture of molds is on application the addition of metal at the same time that for achieving the medium quenching effect necessary. After it has been recognized that the moisture present in the mold is a has a significant effect on the casting result, there was also the possibility of Mass molding, i.e. molds dried before casting, for the production of an aluminum casting to use, which has particularly favorable mechanical properties.
Der Erfindung gemäß wird nämlich die Masseform nach dem Trocknen wieder angefeuchtet. Durch dasTrocknen hat die Form, deren Masse in üblicher Weise mit Mitteln durchsetzt ist, welche die Durchlässigkeit der Form erhöhen, wie z. B. Kälberhaare u. dgl., trotz guter Festigkeit genügende Durchlässigkeit erhalten. Wird sodann die Form wieder so mit Wasser bespritzt, daß sie wieder etwa 6 °/o Feuchtigkeit aufnimmt, so behält sie sowohl ihre Festigkeit als auch ihre sonstigen guten Eigenschaften, vorausgesetzt, daß der zur Herstellung der Trockenform dienenden Masse Metall in körniger oder pulvriger Form beigefügt ist. DieAnwesenheit der Metallteilchen in der Form beschleunigt offenbar die Abführung der in der Form enthaltenen Feuchtigkeit derart, daß Stauungen des sich entwickelnden Dampfes in der Form selbst und die damit verbundenen schädlichen Wirkungen (Kochen des Gusses usw.) vermieden werden. Ohne die Befeuchtung der Trockenform ist ein gleich gutes Ergebnis nicht erzielbar.According to the invention, namely, the mass form is again after drying moistened. By drying, the shape has its mass in the usual way Means is interspersed, which increase the permeability of the form, such as. B. Calf hair and the like, obtained sufficient permeability in spite of good strength. Will then the mold was again splashed with water in such a way that it regained about 6% moisture absorbs, it retains both its strength and its other good properties, provided that the mass used to produce the dry form is metal in granular or powdery form is added. The presence of the metal particles in The form apparently accelerates the removal of the moisture contained in the form such that congestion of the developing steam in the mold itself and the associated harmful effects (boiling of the casting, etc.) can be avoided. An equally good result cannot be achieved without moistening the dry mold.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST40687D DE482576C (en) | 1926-02-28 | 1926-02-28 | Process for the production of cast aluminum |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST40687D DE482576C (en) | 1926-02-28 | 1926-02-28 | Process for the production of cast aluminum |
Publications (1)
Publication Number | Publication Date |
---|---|
DE482576C true DE482576C (en) | 1929-09-17 |
Family
ID=7463773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEST40687D Expired DE482576C (en) | 1926-02-28 | 1926-02-28 | Process for the production of cast aluminum |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE482576C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE763514C (en) * | 1937-06-08 | 1952-09-15 | Siegfried Junghans | Process for the production of cast strings or blocks from metals |
DE4216870A1 (en) * | 1992-05-22 | 1993-01-28 | Titan Aluminium Feinguss Gmbh | METHOD FOR PRODUCING A METALLIC CASTING BODY BY THE INVESTIGATION METHOD |
-
1926
- 1926-02-28 DE DEST40687D patent/DE482576C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE763514C (en) * | 1937-06-08 | 1952-09-15 | Siegfried Junghans | Process for the production of cast strings or blocks from metals |
DE4216870A1 (en) * | 1992-05-22 | 1993-01-28 | Titan Aluminium Feinguss Gmbh | METHOD FOR PRODUCING A METALLIC CASTING BODY BY THE INVESTIGATION METHOD |
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