DE431313C - Covered electrode for electric arc welding of cast iron - Google Patents

Covered electrode for electric arc welding of cast iron

Info

Publication number
DE431313C
DE431313C DEK80896D DEK0080896D DE431313C DE 431313 C DE431313 C DE 431313C DE K80896 D DEK80896 D DE K80896D DE K0080896 D DEK0080896 D DE K0080896D DE 431313 C DE431313 C DE 431313C
Authority
DE
Germany
Prior art keywords
cast iron
weight
carbon
gases
electric arc
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
Application number
DEK80896D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KJELLBERG ELEKTRODEN GmbH
Original Assignee
KJELLBERG ELEKTRODEN GmbH
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 KJELLBERG ELEKTRODEN GmbH filed Critical KJELLBERG ELEKTRODEN GmbH
Priority to DEK80896D priority Critical patent/DE431313C/en
Application granted granted Critical
Publication of DE431313C publication Critical patent/DE431313C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24Selection of soldering or welding materials proper
    • B23K35/30Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053Fe as the principal constituent

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetallic Welding Materials (AREA)

Description

Paten !'-Ansprüche :Godparents! '- Claims:

1. Umhüllte Elektrode für die elektrische Lichtbogenschweißung von Gußeisen, dadurch gekennzeichnet, daß die Umhüllung seltene Erdmetalle oder deren Legierungen enthält.1. Covered electrode for electric arc welding of cast iron, characterized in that the envelope contains rare earth metals or their alloys.

2. Elektrode nach Anspruch 1, dadurch gekennzeichnet, daß die Hülle aus 0,8 Gewichtsteilen kohlensaurem Kalk, 2 Gewichtsteilen Kohlenstoff, 0,08 Gewichtsteilen Aluminium, 0,07 Gewichtsteilen Silicium und 0,05 Gewichtsteilen Cereisen besteht.2. Electrode according to claim 1, characterized in that the sheath consists of 0.8 parts by weight carbonate of lime, 2 parts by weight carbon, 0.08 part by weight aluminum, 0.07 part by weight Silicon and 0.05 part by weight of cerium iron.

Claims (1)

(K 80896(K 80896 Gegenstand der Erfindung ist eine umhüllte Elektrode für die elektrische Lichtbogenschweißung von Gußeisen.The invention relates to a coated electrode for electric arc welding of cast iron. Es sind bereits viele Versuche gemacht worden, um gußeiserne Teile mit Hilfe des elektrischen Lichtbogens schweißen zu können. Diese Versuche haben aber kein befriedigendes Ergebnis gehabt, weil das geschmolzene Material die Form des sogenannten weißen Gußeisens ohne freien Kohlenstoff annahm. Solches Gußeisen ist aber nicht bearbeitbar, da die Voraussetzung hierfür ein Gehalt an freiem Kohlenstoff von wenigstens 2 Prozent ist. Um diesen Kohlenstoffgehalt zu gewährleisten, wird im Sinne der vorliegenden Erfindung eine Elektrode angewandt, deren Kern aus Gußeisen mit einem Kohlenstoffgehalt nicht unter 2 Prozent besteht, und dieser Kern mit einer Umhüllung versehen, die seltene Erdmetalle oder deren Legierungen enthält. Außerdem sind aber.auch noch solche Bestandteile in der Hülle vorhanden, die unter der Einwirkung der Hitze des Lichtbogens Gase ausscheiden, die die umgebende oxydierend wirkende Luft abschließen. Als solche Stoffe sind kohlensaurer Kalk, Kohlenstoff, Aluminium und Silicium brauchbar, als seltenes Erdnietall wird gewöhnlich Cereisen verwendet. Durch das Cereisen wird die Schmelze in einem leicht flüssigen oder unruhigen Zustand gehalten, so daß die vorhandenen Gase entweichen können. Diese Gase würden sonst in der Schweißnaht Höhlungen bilden, die deren Beschaffenheit erheblieh verschlechtern würden. Die neben dein Cereisen noch vorhandenen Stoffe schließenMany attempts have been made to convert cast iron parts using the to be able to weld an electric arc. But these attempts are unsatisfactory Result because the molten material has the shape of so-called white cast iron assumed with no free carbon. Such cast iron cannot be machined, however, since the prerequisite for this is a content of free carbon of at least 2 percent. To ensure this carbon content, For the purposes of the present invention, an electrode is used whose core is made of cast iron with a carbon content does not exist below 2 percent, and this core is provided with a coating, the rare earth metals or their alloys contains. In addition, there are also those components in the shell that are below The effect of the heat of the arc excrete gases which are oxidizing to the surrounding area close off acting air. Such substances are carbonate of lime, carbon, Aluminum and silicon can be used; cere iron is usually used as a rare earth rivet. Through the Cereisen the melt is kept in a slightly liquid or restless state, so that the existing Gases can escape. Otherwise, these gases would form cavities in the weld seam, which would increase its quality would worsen. Close the fabrics that are still present next to your Cereisen die Luft von dem geschmolzenen Metall dadurch ab, daß sie Gase mit einem kleinen Überdruck in der Schlackenhülle entwickeln. Die Schmelze wird so vor der oxydierenden Einwirkung der Luft geschützt und der notwendige Kohlenstoffgehalt später gewährleistet. remove the air from the molten metal by releasing gases with a little Develop overpressure in the slag shell. The melt is so before the oxidizing Protected from the effects of the air and the necessary carbon content guaranteed later. Eine geeignete Zusammensetzung der Umhüllung ist die folgende:A suitable composition of the casing is as follows: 0,8 Gewichtsteile Calciumkarbonat, 2 Gewichtsteile Kohlenstoff, 0,08 Gewichtsteile Aluminium, 0,07 Gewichtsteile Silicium und 0,05 Gewichtsteile Cereisen.0.8 parts by weight calcium carbonate, 2 parts by weight carbon, 0.08 part by weight Aluminum, 0.07 part by weight silicon and 0.05 part by weight cerium iron. Die Stoffe werden im pulverisierten Zustand mit einem beliebigen Bindemittel zu einer Paste geeigneter Konsistenz gemischt. Diese Paste, wird in richtiger Dicke auf den für die Schweißung bestimmten Gußeisenstab aufgebracht, in heißer Luft oder in einem Ofen getrocknet, und die Elektrode ist zum Gebrauch fertig.The substances are in the powdered state with any binder mixed into a paste of suitable consistency. This paste is applied in the right thickness to the Applied cast iron rod intended for welding, in hot air or in a Oven dried and the electrode is ready for use.
DEK80896D 1922-02-19 1922-02-19 Covered electrode for electric arc welding of cast iron Expired DE431313C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK80896D DE431313C (en) 1922-02-19 1922-02-19 Covered electrode for electric arc welding of cast iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK80896D DE431313C (en) 1922-02-19 1922-02-19 Covered electrode for electric arc welding of cast iron

Publications (1)

Publication Number Publication Date
DE431313C true DE431313C (en) 1926-07-03

Family

ID=7233999

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK80896D Expired DE431313C (en) 1922-02-19 1922-02-19 Covered electrode for electric arc welding of cast iron

Country Status (1)

Country Link
DE (1) DE431313C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748211C (en) * 1937-08-05 1944-10-28 Process for the production of welding rods cast from cobalt-chromium-tungsten or chromium-manganese-silicon-zirconium alloys for wear-resistant gas melt deposition welds
DE1270376B (en) * 1958-10-28 1968-06-12 Linde Ag Process for welding cast iron with spheroidal graphite and welding filler material to carry out the process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748211C (en) * 1937-08-05 1944-10-28 Process for the production of welding rods cast from cobalt-chromium-tungsten or chromium-manganese-silicon-zirconium alloys for wear-resistant gas melt deposition welds
DE1270376B (en) * 1958-10-28 1968-06-12 Linde Ag Process for welding cast iron with spheroidal graphite and welding filler material to carry out the process

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