FR2289290A1 - Tungsten welding electrodes for use with inert gas or plasma - where electrodes have long core contg. thoria - Google Patents

Tungsten welding electrodes for use with inert gas or plasma - where electrodes have long core contg. thoria

Info

Publication number
FR2289290A1
FR2289290A1 FR7533072A FR7533072A FR2289290A1 FR 2289290 A1 FR2289290 A1 FR 2289290A1 FR 7533072 A FR7533072 A FR 7533072A FR 7533072 A FR7533072 A FR 7533072A FR 2289290 A1 FR2289290 A1 FR 2289290A1
Authority
FR
France
Prior art keywords
electrode
insert
electrodes
tungsten
thoria
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.)
Withdrawn
Application number
FR7533072A
Other languages
French (fr)
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of FR2289290A1 publication Critical patent/FR2289290A1/en
Withdrawn legal-status Critical Current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
    • B23K35/0205—Non-consumable electrodes; C-electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

Refractory welding electrode made of tungsten or thoriated tungsten, provided with a central insert for promoting electron emission and contg. above (all wt. %) 20% ThO2, and over 35% tungsten. The insert or core extends over at least half of the length of the electrode. The insert may extend through the entire electrode and between the insert and the outer sleeve a zone is pref. provided consisting of a mixt. of the materials of which the core and sleeve are made. The core is pref. included in the powdered mass forming the sleeve when the electrode blank is made, followed by hot pressing and conventional methods of electrode mfr. Permits the repeated regrinding and re-use of the electrode; this repetition is impossible when only a short insert is used.
FR7533072A 1974-10-31 1975-10-29 Tungsten welding electrodes for use with inert gas or plasma - where electrodes have long core contg. thoria Withdrawn FR2289290A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2451862 1974-10-31

Publications (1)

Publication Number Publication Date
FR2289290A1 true FR2289290A1 (en) 1976-05-28

Family

ID=5929763

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7533072A Withdrawn FR2289290A1 (en) 1974-10-31 1975-10-29 Tungsten welding electrodes for use with inert gas or plasma - where electrodes have long core contg. thoria

Country Status (1)

Country Link
FR (1) FR2289290A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0605011A1 (en) * 1992-12-31 1994-07-06 Osram Sylvania Inc. DC plasma arc generator with erosion control and method of operation
CN103769581A (en) * 2014-02-21 2014-05-07 北京矿冶研究总院 Multielement composite rare earth electron emission material and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0605011A1 (en) * 1992-12-31 1994-07-06 Osram Sylvania Inc. DC plasma arc generator with erosion control and method of operation
CN103769581A (en) * 2014-02-21 2014-05-07 北京矿冶研究总院 Multielement composite rare earth electron emission material and preparation method thereof
CN103769581B (en) * 2014-02-21 2016-03-30 北京矿冶研究总院 Multielement composite rare earth electron emission material and preparation method thereof

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