AT66771B - Solder powder for brazing cast iron. - Google Patents
Solder powder for brazing cast iron.Info
- Publication number
- AT66771B AT66771B AT66771DA AT66771B AT 66771 B AT66771 B AT 66771B AT 66771D A AT66771D A AT 66771DA AT 66771 B AT66771 B AT 66771B
- Authority
- AT
- Austria
- Prior art keywords
- cast iron
- solder powder
- powder
- brazing
- brazing cast
- Prior art date
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
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Lötpulver zum Hartlöten von Gusseisen.
Die bekannten Mittel, mit denen man die Bruchflächen von Gusseisen zum Zusammenlöten mit Hartlot geeignet macht, bestehen aus Eisenpulver, Kupferoxyd, welches den zum Verbrennen der Graphitkristalle nötigen Sauerstoff liefert, und Borax, welcher mit den Oxyden auf der Metalloberfläche zu Doppelboraten zusammenschmilzt und dadurch die Oxyde entfernt.
Der Erfindung gemäss wird die Herstellung des Lötpulvers dadurch wesentlich vereinfacht, dass dem Eisenpulver nur ein Salz zugesetzt wird, welches sowohl den zum Verbrennen der Uraphitkristalle erforderlichen Sauerstoff liefert als auch die Oxyde entfernt. Dieses Salz ist Natriumperborat, welches beim Erhitzen erst Sauerstoff abgibt und dadurch zu Í11 bekannter Weise wirkendem Borax reduziert wird.
Das Mengenverhältnis der Bestandteile ist 0#5 bis 1#5 Gewichtsteile Natriumperborat auf 100 Gewichtsteile Eisenpulver. Zur Verwendung macht man das Pulver mit passer zu einem dicken Brei an, welcher auf die vorher mit Salzsäure gereinigten Gusseisenbruchflächen aufgetragen wird, die dann der Rotglut ausgesetzt werden. Das weitere Verfahren unter Anwendung von Hartlot ist allgemein bekannt.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
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Solder powder for brazing cast iron.
The known means with which the fracture surfaces of cast iron are made suitable for soldering together with hard solder, consist of iron powder, copper oxide, which supplies the oxygen necessary for burning the graphite crystals, and borax, which melts with the oxides on the metal surface to form double borates and thereby the Oxides removed.
According to the invention, the production of the soldering powder is significantly simplified in that only one salt is added to the iron powder, which both supplies the oxygen required for burning the uraphite crystals and removes the oxides. This salt is sodium perborate, which only releases oxygen when heated and is thereby reduced to the well-known borax.
The proportion of the ingredients is 0 # 5 to 1 # 5 parts by weight of sodium perborate per 100 parts by weight of iron powder. For use, the powder is made into a thick paste with passer, which is applied to the broken cast iron surfaces previously cleaned with hydrochloric acid, which are then exposed to the red heat. The further method using braze is well known.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT66771T | 1913-06-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT66771B true AT66771B (en) | 1914-10-10 |
Family
ID=3588694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT66771D AT66771B (en) | 1913-06-17 | 1913-06-17 | Solder powder for brazing cast iron. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT66771B (en) |
-
1913
- 1913-06-17 AT AT66771D patent/AT66771B/en active
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