DE432486C - Process for refining aluminum alloys with a silicon content of over 5 percent - Google Patents
Process for refining aluminum alloys with a silicon content of over 5 percentInfo
- Publication number
- DE432486C DE432486C DEP43278D DEP0043278D DE432486C DE 432486 C DE432486 C DE 432486C DE P43278 D DEP43278 D DE P43278D DE P0043278 D DEP0043278 D DE P0043278D DE 432486 C DE432486 C DE 432486C
- Authority
- DE
- Germany
- Prior art keywords
- percent
- aluminum alloys
- silicon content
- over
- refining aluminum
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Verfahren zur Veredelung von Aluminiumlegierungen mit einem Siliciumgehalt von über 5' Prozent. In dem Hauptpatent ist ein Veredelungsverfahren für Aluminium-Silicium-Legierungen beschrieben, gemäß dem die geschmolzene Legierung mit einem Salzgemisch, das ein Alkalifluorid oder Bestandteile, die ein Alkalifluorid bilden können, enthält. Durch die Behandlung mit diesem Salzgemisch gelingt es, Aluminium-Silicium-Legierungen zu erhalten, deren mechanische Eigenschaften die des unbehandelten Materials wesentlich übertreffen. Die Veredelung erfolgt in der Weise, daß das Salzgemisch in geringen Mengen auf die Oberfläche der geschmolzenen Legierung gebracht und mit einem Kohlenstaub eingerührt wird. Die aufgebrachte Salzmischung tritt in lebhafte Reaktion mit der Legierung ein, was sich durch das Auftreten gelber Flammen und von weißem, dichtem Rauch äußerlich kenntlich macht. Es hat sich gezeigt, daß der Verlauf der Reaktion gelegentlich zu rasch vonstatten geht und infolgedessen die Veredelung nicht weitgehend genug erfolgt. Es mag dies einesteils mit zufälligen Temperaturverhältnissen oder auch mit einer physikalischen Beschaffenheit der zur Verfügung stehenden Salze zusammenhängen. Es ist nun gefunden worden, daß man diesen ungünstigen Verlauf der Reaktion dadurch beheben kann, daß man dem Salzgemisch einen Zusatz von Siliciumverbindungen irgendwelcher Art, besonders von Silikaten oder von Kieselsäure, gibt. Bei einem solchen Zusatz, der in geringen Mengen gehalten sein kann, findet ein ruhiger Verlauf der Reaktion statt, und ein Mißlingen der Veredelung wird mit Sicherheit vermiedmProcess for refining aluminum alloys with a silicon content of over 5 'percent. The main patent contains a refining process for aluminum-silicon alloys described, according to which the molten alloy with a salt mixture that a Alkali fluoride or components that can form an alkali fluoride contains. By The treatment with this salt mixture succeeds in aluminum-silicon alloys to obtain the mechanical properties of which are essentially those of the untreated material surpass. The refinement takes place in such a way that the salt mixture in small Quantities placed on the surface of the molten alloy and covered with a coal dust is stirred in. The applied salt mixture reacts vigorously with the Alloy one, as evidenced by the appearance of yellow flames and white, dense ones Makes smoke externally recognizable. It has been shown that the course of the reaction Occasionally it happens too quickly and, as a result, the refinement is not largely done enough done. It may be partly with accidental temperature conditions or are also related to the physical nature of the available salts. It has now been found that this unfavorable course of the reaction can be avoided can fix that one can add silicon compounds of any kind to the salt mixture Type, especially of silicates or of silicic acid. With such an addition, which can be kept in small amounts, the reaction proceeds smoothly instead, and a failure of the refinement will be avoided with certainty
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP43278D DE432486C (en) | 1921-11-30 | 1921-11-30 | Process for refining aluminum alloys with a silicon content of over 5 percent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP43278D DE432486C (en) | 1921-11-30 | 1921-11-30 | Process for refining aluminum alloys with a silicon content of over 5 percent |
Publications (1)
Publication Number | Publication Date |
---|---|
DE432486C true DE432486C (en) | 1926-08-07 |
Family
ID=7379330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP43278D Expired DE432486C (en) | 1921-11-30 | 1921-11-30 | Process for refining aluminum alloys with a silicon content of over 5 percent |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE432486C (en) |
-
1921
- 1921-11-30 DE DEP43278D patent/DE432486C/en not_active Expired
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