AT240129B - Welding powder for the submerged arc welding process - Google Patents

Welding powder for the submerged arc welding process

Info

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
Application number
AT269062A
Other languages
German (de)
Original Assignee
Boehler & Co Ag Geb
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Boehler & Co Ag Geb filed Critical Boehler & Co Ag Geb
Priority to AT269062A priority Critical patent/AT240129B/en
Application granted granted Critical
Publication of AT240129B publication Critical patent/AT240129B/en

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  • Nonmetallic Welding Materials (AREA)

Description

  

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  Schweisspulver für das Unterpulverschweissverfahren 
 EMI1.1 
 

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   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.



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  Welding powder for the submerged arc welding process
 EMI1.1
 

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   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)

PATENTANSPRUCH : Verwendung von Schweisspulvern für das Unterpulverschweissverfahren, deren Schwefel- und PhosphorGehalte nicht über je 0, 010% liegen. PATENT CLAIM: Use of welding powders for the submerged arc welding process, the sulfur and phosphorus contents of which do not exceed 0.010% each.
AT269062A 1962-04-03 1962-04-03 Welding powder for the submerged arc welding process AT240129B (en)

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)

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