GB782307A - Brazing alloy and flux composition - Google Patents

Brazing alloy and flux composition

Info

Publication number
GB782307A
GB782307A GB18231/55A GB1823155A GB782307A GB 782307 A GB782307 A GB 782307A GB 18231/55 A GB18231/55 A GB 18231/55A GB 1823155 A GB1823155 A GB 1823155A GB 782307 A GB782307 A GB 782307A
Authority
GB
United Kingdom
Prior art keywords
per cent
potassium
flux
silver
melting point
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
GB18231/55A
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.)
Eutectic Corp
Original Assignee
Eutectic Welding Alloys Corp
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 Eutectic Welding Alloys Corp filed Critical Eutectic Welding Alloys Corp
Publication of GB782307A publication Critical patent/GB782307A/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
    • B23K35/24—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
    • B23K35/3006—Ag as the principal constituent
    • 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
    • B23K35/3601—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 with inorganic compounds as principal constituents
    • B23K35/3606—Borates or B-oxides

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Nonmetallic Welding Materials (AREA)

Abstract

A brazing paste comprises in parts by weight, 25-45 of an alkali metal borate alkali metal fluoride flux, 8-14 of an aqueous vehicle and 50-70 of a silver alloy powder having a particle size of 100-150 mesh and a melting point of 1100-1500 DEG F., the flux having a fusion point below the melting point of the alloy. The silver alloy may contain the following: .silver.10-70 per cent .copper.14-50 per cent .zinc.0-35 per cent .cadmium.0-35 per cent .tin.0-10 per cent and up to 15 per cent of nickel and/or manganese the ratio of borates to fluorides in the flux may be 0.6 and 1.6 to 1 and potassium fluoborate may form 2-20 per cent of the flux. In one example the following flux powders were mixed: .potassium pentaborate.42 per cent .potassium tetraborate.18 per cent .potassium bifluoride.30 per cent .potassium fluoborate.10 per cent and 25 parts by weight were stirred into 10 parts of water while heating to 150 DEG F. Into this paste were stirred 65 parts by weight of powdered (125 mesh) silver alloy as follows: .silver.45 per cent .copper.30 per cent .zinc.25 per cent The flux had a melting point of 1100 DEG F. and the alloy a melting point of 1250 DEG F. For brazing steels the following fluxes were employed, all per cent by weight. ..(a).(b).(c) .potassium pentaborate.44.42.38 .potassium tetraborate.18.18.15 .potassium bifluoride.38.40.35 .potassium fluoborate.-.-.12 (a) (b) and (c) were mixed with water and the following alloys (a) (b) and (c) respectively ..(a).(b).(c) .silver.57.5.45.40 per cent .copper.32.5.15.30 per cent .tin.7.0.-.- per cent .manganese.3.0.-.- per cent .cadmium.-.24.- per cent .zinc.-.16.28 per cent .nickel.-.-.2 per cent The water may be replaced in part by methyl or ethyl alcohol
GB18231/55A 1955-04-22 1955-06-23 Brazing alloy and flux composition Expired GB782307A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US782307XA 1955-04-22 1955-04-22

Publications (1)

Publication Number Publication Date
GB782307A true GB782307A (en) 1957-09-04

Family

ID=22142752

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18231/55A Expired GB782307A (en) 1955-04-22 1955-06-23 Brazing alloy and flux composition

Country Status (1)

Country Link
GB (1) GB782307A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370164A (en) * 1981-01-02 1983-01-25 Jostens Inc. Yellow metal alloy
DE102006003921B3 (en) * 2006-01-26 2007-06-06 Mec Holding Gmbh Flux which contains no boric acid, is based on potassium pentaborate and potassium metaborate
WO2014140778A3 (en) * 2013-03-15 2015-04-09 Lincoln Global, Inc. Boric acid free flux
WO2015136360A1 (en) * 2014-03-14 2015-09-17 Lincoln Global, Inc. Boric acid free flux
US9174310B2 (en) 2013-03-15 2015-11-03 Lincoln Global, Inc. Boric acid free flux

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370164A (en) * 1981-01-02 1983-01-25 Jostens Inc. Yellow metal alloy
DE102006003921B3 (en) * 2006-01-26 2007-06-06 Mec Holding Gmbh Flux which contains no boric acid, is based on potassium pentaborate and potassium metaborate
WO2007085616A3 (en) * 2006-01-26 2007-09-13 Mec Holding Gmbh Boric acid-free flux for brazing metal materials
WO2014140778A3 (en) * 2013-03-15 2015-04-09 Lincoln Global, Inc. Boric acid free flux
US9174310B2 (en) 2013-03-15 2015-11-03 Lincoln Global, Inc. Boric acid free flux
US9700964B2 (en) 2013-03-15 2017-07-11 Lincoln Global, Inc. Boric acid free flux
US10058957B2 (en) 2013-03-15 2018-08-28 Lincoln Global, Inc. Boric acid free flux
US10668576B2 (en) 2013-03-15 2020-06-02 Lincoln Global, Inc. Boric acid free flux
US10682731B2 (en) 2013-03-15 2020-06-16 Lincoln Global, Inc. Process for making a boric acid free flux
WO2015136360A1 (en) * 2014-03-14 2015-09-17 Lincoln Global, Inc. Boric acid free flux

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