AT240129B - Welding powder for the submerged arc welding process - Google Patents
Welding powder for the submerged arc welding processInfo
- Publication number
- AT240129B AT240129B AT269062A AT269062A AT240129B AT 240129 B AT240129 B AT 240129B AT 269062 A AT269062 A AT 269062A AT 269062 A AT269062 A AT 269062A AT 240129 B AT240129 B AT 240129B
- Authority
- AT
- Austria
- Prior art keywords
- welding
- submerged arc
- powder
- welding process
- arc welding
- Prior art date
Links
Landscapes
- Nonmetallic Welding Materials (AREA)
Description
<Desc/Clms Page number 1>
Schweisspulver für das Unterpulverschweissverfahren
EMI1.1
<Desc/Clms Page number 2>
Der Erfindung liegt nun die überraschende Feststellung zugrunde, dass die bekannten Vorstellungen unzutreffend sind und zu einer nachteiligen Beeinflussung der Qualität des Schweissgutes führen müssen.
Erfindungsgemäss wird daher vorgeschlagen, für das Unterpulverschweissverfahren Schweisspulver zu verwenden, deren Phosphor- und Schwefel-Gehalte nicht über je 0, 010 %) liegen.
Wenn man gleichzeitig dafür sorgt, dass Grund-und Zusatzwerkstoffe zur Verwendung kommen, deren Phosphor-und Schwefel-Gehalte ebenfalls unterhalb der für das Pulver angegebenen Höchstgrenzen liegen, können die Zähigkeitswerte des Schweissgutes, insbesondere die Kerbschlagzähigkeit bei sonst gleicher Zusammensetzung im Vergleich zu normalen Schwefel- und Phosphor-Gehalten im Schweissgut erheblich gesteigert werden. Als normal wären hiebei Gehalte von etwa je 0, 015 bis 0, 025%. anzusehen.
Auch bei der Herstellung von Schweissverbindungen an Grundwerkstoffen mit normalen Verunreinigungen und bei Verwendung gleichartiger Zusatzwerkstoffe hat sich die Benützung von Schweisspulvern gemäss der Erfindung deshalb als wertvoll erwiesen, weil hiedurch überraschenderweise ein Schweissgut erzielt wird, dessen Schwefel-und Phosphor-Gehalte niedriger sind, als es der erwartungsgemässen, theoretisch ermittelbaren Schweissgutzusammensetzung entsprechen würde. Untersuchungen der Schweissschlacken haben ergeben, dass in. solchen Fällen Anreicherungen an Phosphor und Schwefel in der Schweissschlacke im Vergleich zu den Phosphor- und Schwefel-Gehalten im Schweisspulver erfolgen, wobei diese Beobachtungen nicht auf Pulver mit bestimmten Zusammensetzungen oder mit bestimmtem chemischem Charakter beschränkt sind.
<Desc / Clms Page number 1>
Welding powder for the submerged arc welding process
EMI1.1
<Desc / Clms Page number 2>
The invention is based on the surprising finding that the known ideas are incorrect and must lead to a disadvantageous influence on the quality of the welded material.
According to the invention, it is therefore proposed to use welding powder for the submerged arc welding process, the phosphorus and sulfur contents of which do not exceed 0.010% each.
If at the same time it is ensured that base and filler materials are used, the phosphorus and sulfur contents of which are also below the maximum limits specified for the powder, the toughness values of the weld metal, in particular the notched impact strength, can be achieved with otherwise the same composition compared to normal sulfur - and phosphorus contents in the weld metal can be increased considerably. Contents of around 0.015 to 0.025% each would be considered normal. to watch.
The use of welding powders according to the invention has also proven to be valuable in the production of welded joints on base materials with normal impurities and when using similar filler metals, because it surprisingly results in a weld metal whose sulfur and phosphorus contents are lower than that would correspond to the expected, theoretically determinable weld metal composition. Investigations of the welding slag have shown that in such cases there is an accumulation of phosphorus and sulfur in the welding slag compared to the phosphorus and sulfur contents in the welding powder, whereby these observations are not limited to powders with specific compositions or with a specific chemical character.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT269062A AT240129B (en) | 1962-04-03 | 1962-04-03 | Welding powder for the submerged arc welding process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT269062A AT240129B (en) | 1962-04-03 | 1962-04-03 | Welding powder for the submerged arc welding process |
Publications (1)
Publication Number | Publication Date |
---|---|
AT240129B true AT240129B (en) | 1965-05-10 |
Family
ID=3538736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT269062A AT240129B (en) | 1962-04-03 | 1962-04-03 | Welding powder for the submerged arc welding process |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT240129B (en) |
-
1962
- 1962-04-03 AT AT269062A patent/AT240129B/en active
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