AT206255B - Method for welding with an electric arc using carbon dioxide as a protective gas - Google Patents
Method for welding with an electric arc using carbon dioxide as a protective gasInfo
- Publication number
- AT206255B AT206255B AT755456A AT755456A AT206255B AT 206255 B AT206255 B AT 206255B AT 755456 A AT755456 A AT 755456A AT 755456 A AT755456 A AT 755456A AT 206255 B AT206255 B AT 206255B
- Authority
- AT
- Austria
- Prior art keywords
- welding
- protective gas
- electric arc
- carbon dioxide
- added
- Prior art date
Links
- 238000003466 welding Methods 0.000 title claims description 13
- 230000001681 protective effect Effects 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 9
- 238000010891 electric arc Methods 0.000 title claims description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title description 18
- 229910002092 carbon dioxide Inorganic materials 0.000 title description 6
- 239000001569 carbon dioxide Substances 0.000 title description 6
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 2
- YGZSVWMBUCGDCV-UHFFFAOYSA-N chloro(methyl)silane Chemical class C[SiH2]Cl YGZSVWMBUCGDCV-UHFFFAOYSA-N 0.000 claims description 2
- HQWPLXHWEZZGKY-UHFFFAOYSA-N diethylzinc Chemical group CC[Zn]CC HQWPLXHWEZZGKY-UHFFFAOYSA-N 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 9
- 239000000654 additive Substances 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 150000002902 organometallic compounds Chemical class 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zum Schweissen mit dem elektrischen Lichtbogen unter Verwendung von Kohlensäure als Schutzgas
In neuerer Zeit ist mehrfach vorgeschlagen worden, bei den mit inerten Schutzgasen arbeitenden elektrischen Lichtbogenschweissverfahren das kostspielige Schutzgas durch die erheblich billigere Kohlensäure zu ersetzen. Da diese jedoch bei den in Betracht kommenden Temperaturen eine beträchtliche Oxydationswirkung ausübt, wirkt sich das diesen Schutzgasschweissverfahren eigene Fehlen einer Schlacke, welche das heisse Schweissgut abdecken und die zu schnelle Abkühlung desselben verhindern würde, deshalb besonders nachteilig aus, weil auch ein Schutz vor der nachträglichen Einwirkung der oxydierenden Atmosphäre wünschenswert wäre.
Ferner wären bei der Verwendung von Kohlensäure als Schutzgas Massnahmen zweckmässig, die eine Beruhigung des Lichtbogens und eine Verbesserung der Ionisierung ergeben würden.
Gegenstand der Erfindung ist nun der Vorschlag, der als Schutzgas zur Verwendung kommenden Kohlensäure metallorganische Verbindungen zuzusetzen, welche gleichzeitig ionisierend und schlackenbildend wirken.
Diese Zusätze werden der Kohlensäure zweckmässig vor dem Austritt aus dem Mundstück zugeführt, aus welchem sie auf die Schweissstelle strömt und können sowohl in gas-oder dampfförmigem, als auch in feinverteiltem flüssigem oder festem Zustande erfolgen.
Die Menge der Zusätze in Gas- oder Dampfform beträgt im allgemeinen nicht mehr als 25 Vol. -0/0 oder bei Zusätzen in flüssiger oder fester Form nicht mehr als 1 g je Liter der zur Verwendung kommenden Kohlensäure.
Für den Zweck der Erfindung können beispielsweise Methyl-Chlorsilane Verwendung finden ; es können aber auch die Titanate der aliphatischen Kohlenwasserstoffreihe oder Verbindungen, wie z. B. Aluminium-Triäthyl oder Zink-Diäthyl, zur Ionisierung und Schlackenbildung der Kohlensäure zugesetzt werden.
Es ist bereits bekannt, beim Schweissen in Kohlensäure Zusätze von Kohlenstoff-Wasserstoff-Verbindungen wie Propan oder von Kohlenstoff-Wasserstoff-Sauerstoff-Verbindungen wie Methylalkohol zu verwenden. Durch derartige Zusätze zur Kohlensäure kann eine Schlackenbildung beim Schweissen nicht erreicht werden.
Das Verfahren der Erfindung ermöglicht es, die bisher störenden Schwierigkeiten bei der Schweissung mit Kohlensäure als Schutzgas weitgehend zu beheben und insbesondere eine erhebliche qualitative Verbesserung der Schweissverbindungen zu erzielen.
PATENTANSPRÜCHE :
1. Verfahren zum Schweissen mit dem elektrischen Lichtbogen unter Verwendung von Kohlensäure als Schutzgas, dadurch gekennzeichnet, dass das Schutzgas Zusätze an metallorganischen Verbindungen erhält, welche gleichzeitig ionisierend und schlackenbildend wirken.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for welding with an electric arc using carbon dioxide as a protective gas
In recent times it has been proposed several times to replace the expensive protective gas with the considerably cheaper carbonic acid in electrical arc welding processes that work with inert protective gases. However, since this has a considerable oxidizing effect at the temperatures in question, the lack of a slag inherent in these inert gas welding processes, which would cover the hot weld metal and prevent it from cooling too quickly, has a particularly disadvantageous effect, because it also provides protection against subsequent welding Exposure to the oxidizing atmosphere would be desirable.
Furthermore, when using carbonic acid as a protective gas, measures would be expedient which would calm the arc and improve the ionization.
The subject of the invention is the proposal to add organometallic compounds to the carbonic acid used as protective gas, which have an ionizing and slag-forming effect at the same time.
These additives are expediently added to the carbonic acid before it emerges from the mouthpiece, from which it flows onto the welding point, and can be in the gaseous or vaporous state as well as in a finely divided liquid or solid state.
The amount of additives in gas or vapor form is generally not more than 25 vol. -0/0 or, in the case of additives in liquid or solid form, not more than 1 g per liter of the carbonic acid used.
For the purpose of the invention, for example, methyl chlorosilanes can be used; but it can also be the titanates of the aliphatic hydrocarbon series or compounds such as. B. aluminum triethyl or zinc diethyl, are added for ionization and slag formation of the carbonic acid.
It is already known to use additives of carbon-hydrogen compounds such as propane or of carbon-hydrogen-oxygen compounds such as methyl alcohol when welding in carbon dioxide. Such additives to carbon dioxide cannot result in slag formation during welding.
The method of the invention makes it possible to largely eliminate the previously troublesome difficulties in welding with carbon dioxide as the protective gas and, in particular, to achieve a considerable qualitative improvement in the welded joints.
PATENT CLAIMS:
1. A method for welding with an electric arc using carbon dioxide as the protective gas, characterized in that the protective gas contains additives of organometallic compounds which have an ionizing and slag-forming effect at the same time.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT755456A AT206255B (en) | 1956-12-18 | 1956-12-18 | Method for welding with an electric arc using carbon dioxide as a protective gas |
| NL223349A NL113737C (en) | 1956-12-18 | 1957-12-18 | |
| NL223349D NL223349A (en) | 1956-12-18 | 1957-12-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT755456A AT206255B (en) | 1956-12-18 | 1956-12-18 | Method for welding with an electric arc using carbon dioxide as a protective gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT206255B true AT206255B (en) | 1959-11-25 |
Family
ID=3597209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT755456A AT206255B (en) | 1956-12-18 | 1956-12-18 | Method for welding with an electric arc using carbon dioxide as a protective gas |
Country Status (2)
| Country | Link |
|---|---|
| AT (1) | AT206255B (en) |
| NL (2) | NL113737C (en) |
-
1956
- 1956-12-18 AT AT755456A patent/AT206255B/en active
-
1957
- 1957-12-18 NL NL223349A patent/NL113737C/xx active
- 1957-12-18 NL NL223349D patent/NL223349A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL223349A (en) | 1959-02-15 |
| NL113737C (en) | 1967-06-16 |
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