GB592280A - Improvements in or relating to electric arc welding and cutting - Google Patents

Improvements in or relating to electric arc welding and cutting

Info

Publication number
GB592280A
GB592280A GB8761/45A GB876145A GB592280A GB 592280 A GB592280 A GB 592280A GB 8761/45 A GB8761/45 A GB 8761/45A GB 876145 A GB876145 A GB 876145A GB 592280 A GB592280 A GB 592280A
Authority
GB
United Kingdom
Prior art keywords
per cent
coating
electrode
ferro
carbon
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
GB8761/45A
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.)
Welding Supplies Ltd
Original Assignee
Welding Supplies Ltd
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 Welding Supplies Ltd filed Critical Welding Supplies Ltd
Publication of GB592280A publication Critical patent/GB592280A/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
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/365—Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials

Landscapes

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

Abstract

An arc welding or cutting electrode is provided with a flux coating characterised in that it contains ferromanganese poor in carbon 25 to 40 per cent, quartz 20 to 30 per cent, kaolin 0 to 10 per cent, siderite (iron carbonate) 30 to 50 per cent in addition to a binder preferably of sodium silicate; or, a coating comprising: SiO2 23 to 50 per cent; Al2O3 0 to 5 per cent; FeO (from metallic iron) 2 to 11 per cent; FeO (from iron compounds) 14 to 25 per cent; CO2 (from carbonate) 8 to 17 per cent; MnO (from metallic manganese) 22 to 49 per cent; Na2O 1 to 4 per cent. Such an electrode has a crater forming influence so that in welding with normal arc length the arc voltage may exceed 50 volts, preferably exceeding 55 to 60 volts. The coating, when using inorganic substances may comprise 60 to 75 per cent of the weight of the coated portion of the electrode and 30-50 per cent in the case of organic coatings such as cellulose wood flour starch, dextrine or carbohydrates. The coating may contain substances developing hydrogen gas such as hydrocarbons and may also contain ferro-alloys such as ferro-manganese containing 6 to 7 per cent of carbon. With such an electrode deep penetration of the work may be obtained, the high voltage being obtained without increasing the normal arc length, deep craters being formed on the electrode end and in the work. Butt welding may be effected on thick plates without bevelling and the diameter of the case may be from 3 to 5 mms., particularly 4 mms. One coating may consist of 25 to 40 per cent of ferro-manganese (poor in carbon) 20-30 per cent of quartz, 0 to 10 per cent of kaolin, 30 to 50 per cent of siderite together with 50 to 100 grams of sodium silicate to one kilogram of the mixture. Dextrine may alternatively be used as the binder. When used for cutting, the ferro-manganese should be rich in carbon. The Specification as open to inspection under Sect. 91 states that the coating may contain Cr2O3. This subject-matter does not appear in the Specification as accepted.
GB8761/45A 1944-02-29 1945-04-09 Improvements in or relating to electric arc welding and cutting Expired GB592280A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE592280X 1944-02-29

Publications (1)

Publication Number Publication Date
GB592280A true GB592280A (en) 1947-09-12

Family

ID=20312645

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8761/45A Expired GB592280A (en) 1944-02-29 1945-04-09 Improvements in or relating to electric arc welding and cutting

Country Status (1)

Country Link
GB (1) GB592280A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971879C (en) * 1953-05-16 1959-04-09 Castolin Soudures Metal arc planer electrode for grooving, chamfering, dressing etc. of metallic workpieces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971879C (en) * 1953-05-16 1959-04-09 Castolin Soudures Metal arc planer electrode for grooving, chamfering, dressing etc. of metallic workpieces

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