DE905445C - Powdered ferro-alloys as part of the sheaths of welding electrodes - Google Patents

Powdered ferro-alloys as part of the sheaths of welding electrodes

Info

Publication number
DE905445C
DE905445C DEB7653D DEB0007653D DE905445C DE 905445 C DE905445 C DE 905445C DE B7653 D DEB7653 D DE B7653D DE B0007653 D DEB0007653 D DE B0007653D DE 905445 C DE905445 C DE 905445C
Authority
DE
Germany
Prior art keywords
alloys
welding electrodes
sheaths
ferro
powdered
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
DEB7653D
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.)
Gebrueder Boehler and Co AG
Original Assignee
Gebrueder Boehler and Co AG
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 Gebrueder Boehler and Co AG filed Critical Gebrueder Boehler and Co AG
Priority to DEB7653D priority Critical patent/DE905445C/en
Application granted granted Critical
Publication of DE905445C publication Critical patent/DE905445C/en
Expired legal-status Critical Current

Links

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
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • 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
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053—Fe as the principal constituent

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Conductive Materials (AREA)

Description

Pulverförmige Ferrolegierungen als Bestandteil von Mantelmassen von Schweißelektroden Die Mantelmassen von Sch.weißelektrcden enthalten neben Oxyden meist auch verschiedene Ferrolegierungen in Pulverform, wie Ferromangan, Ferrochrom, Ferrotitan usw.Powdered ferro-alloys as a component of the coating masses of Welding electrodes The sheath masses of welding electrodes contain oxides mostly also various ferro alloys in powder form, such as ferro-manganese, ferrochrome, Ferrotitanium etc.

Diese Ferrolegierungen haben zwei Nachteile: z. s,ie sind, insbesondere wenn sie kohlen.stoffarm sind, zäh und bereiten beträchtliche Schwierigkeiten beim Zerkleinern; 2. sie zeigen @ddie Neigung, in,der feuchten Mantelmasse zu gasen und sie zu zersetzen. Diese Eigenschaft erschwert die Verarbeitung der Metallpulver bei der Erzeugung ummantelter Drähte außerordentlich. Es wurde nun gefunden, daß man diese Schwierigkeiten umgeht, wenn zerkleinerte Ferrolegierungen verwendet werden, ,die aus dem schmelLzflüsdsigen Zustand durch Granulieren oder ddurch die ähnlichen verfahren des Zerstäubens oder Zerschleuderns- gewonnen wurden. Bei dieser Arbeitsweise können naturgemäß auch Pulver mehr harter und zäher Ferrolegierungenahne Schwierigkeiten hergestellt werden, wobei diese Pulver zusätzlich eine große Beständigkeit in der feuchten Masse aufweisen. Dieser Umstand ist :auf die bei der Herstellung gebildete Oxydhaut ,an -der Oberfläche der Teilchen zurückzuführen, wodurch Reaktionen mit dem elektrölythaltigen Wasser verhindert werden.These ferro alloys have two disadvantages: e.g. s, ie are, in particular if they are low in carbon, tough and cause considerable difficulty in Crushing; 2. They show @dthe tendency to gas and in the moist coat mass to decompose them. This property complicates the processing of the metal powder extraordinary in the production of coated wires. It has now been found that these difficulties are avoided by using crushed ferrous alloys, from the molten state by granulation or by the like methods of atomization or centrifugation were obtained. In this way of working Naturally, powders can also have more hard and tough ferro-alloys without difficulties These powders additionally have a great resistance in the have moist mass. This fact is: on the one formed during manufacture Oxide skin, attributed to the surface of the particles, causing reactions with the electrolyte-containing water can be prevented.

Erfindungsgemäß -werden nun diese Oxyde an der Oberfläche bewußt belassen und keiner Reduktionsbehandlung, die zum Abbau dieser Oxyde führen würde, unterzogen. Bei den. bisher gebräuchliehen Herstellungsverfahren ging man zum Unterschied davon meist so vor, daß entweder in neutraler Atmosphäre ;gearbeitet wurde oder, wenn dies nicht der Fall war, die gebildeten Oxyde an der Oberfläche der Pulverbeile durch eine reduzierende Behandlung zerstört wurden.According to the invention, these oxides are now deliberately left on the surface and not subjected to any reducing treatment which would lead to the degradation of these oxides. Both. Up to now common manufacturing processes one went to the difference of it usually in such a way that either work was carried out in a neutral atmosphere or, if so If this was not the case, the oxides formed on the surface of the powder axles destroyed by reducing treatment.

Claims (1)

PATENTANSPRUCH: Verwendung von aus dem schmelzflüssigen Zustand durch Granulieren, Zerstäuben öder Zerschleudern gewonnenen unreduzierten.pulverfärmigen Perrolegierungen als Bestandteil von Mantelmassen von Schweißelektroden. PATENT CLAIM: Use of unreduced, powdery pearl alloys obtained from the molten state by granulating, atomizing or spinning as a component of the sheath masses of welding electrodes.
DEB7653D 1944-10-04 1944-10-04 Powdered ferro-alloys as part of the sheaths of welding electrodes Expired DE905445C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB7653D DE905445C (en) 1944-10-04 1944-10-04 Powdered ferro-alloys as part of the sheaths of welding electrodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB7653D DE905445C (en) 1944-10-04 1944-10-04 Powdered ferro-alloys as part of the sheaths of welding electrodes

Publications (1)

Publication Number Publication Date
DE905445C true DE905445C (en) 1954-03-01

Family

ID=6955516

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB7653D Expired DE905445C (en) 1944-10-04 1944-10-04 Powdered ferro-alloys as part of the sheaths of welding electrodes

Country Status (1)

Country Link
DE (1) DE905445C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1218259B (en) * 1960-10-11 1966-06-02 Knapsack Ag Ferrosilicon additive for the production of encapsulation compounds for press-clad welding electrodes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1218259B (en) * 1960-10-11 1966-06-02 Knapsack Ag Ferrosilicon additive for the production of encapsulation compounds for press-clad welding electrodes

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