GB1454217A - Vacuum brazing of super-alloy articles - Google Patents

Vacuum brazing of super-alloy articles

Info

Publication number
GB1454217A
GB1454217A GB5429374A GB5429374A GB1454217A GB 1454217 A GB1454217 A GB 1454217A GB 5429374 A GB5429374 A GB 5429374A GB 5429374 A GB5429374 A GB 5429374A GB 1454217 A GB1454217 A GB 1454217A
Authority
GB
United Kingdom
Prior art keywords
article
brazing
furnace
alloy
zirconium
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
GB5429374A
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.)
Wall Colmonoy Corp
Original Assignee
Wall Colmonoy 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 Wall Colmonoy Corp filed Critical Wall Colmonoy Corp
Publication of GB1454217A publication Critical patent/GB1454217A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P6/00—Restoring or reconditioning objects
    • B23P6/002—Repairing turbine components, e.g. moving or stationary blades, rotors
    • B23P6/007—Repairing turbine components, e.g. moving or stationary blades, rotors using only additive methods, e.g. build-up 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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
    • 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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
    • 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
    • B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
    • B23K35/004—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of a metal of the iron group

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Ceramic Products (AREA)

Abstract

1454217 Brazing WALL COLMONOY CORP 16 Dec 1974 [14 Dec 1973] 54293/74 Heading B3R [Also in Divisions C7] In braze repairing or brazing an article or a superalloy containing 2-10% Al and/or 2- 10% Ti, the surfaces of the article are cleaned, a brazing filler metal is applied to the article, the article is placed in an enclosure containing a material having an affinity for oxygen at least equal to that of the Al and/or Ti in the article and the article is heated in a vacuum while in the enclosure. The superalloy is a Ni, Co or Cr based alloy and the articles which may be treated are gas turbine blades, combustion chamber liners, nozzles, ducts, &c. especially to repair eroded surfaces, cavities, thermal fatique cracks &c. and parts of nuclear reactors. In an embodiment a cracked jet engine part is solvent or vapour degreased and then cleaned in a hot salt bath containing 9- 15% sodium nitrate, 5-15% sodium chloride, 8-20% potassium hydroxide and 50-78% sodium hydroxide. The part is rinsed in water, pickled in dilute acid solution, water rinsed again and dried. Brazing metal, e.g. an alloy containing 19% Cr, 10.2% Si, rest Ni, in powder form mixed with a fugitive binder to form a paste is applied to the part and the part is placed on pedestals 44 of alumina in a box 34 in a furnace 10. The box which is carried on a table 30 comprises a bottom 38 and a loose, non-gas tight, lid 36 of stainless steel with an intermediate layer of alumina and an inner lining of material having a greater affinity for oxygen than Al and/or Ti, e.g. zirconium or an alloy thereof. Titanium may be employed in addition to zirconium. A hard vacuum is initially provided in the electrically heated furnace, the furnace is then filled with argon or helium and then again evacuated and a temperature of above 1800‹ F. is produced in the furnace to melt the brazing metal and held to cause diffusion thereof. In an example thermal fatigue fractured turbine vane is repaired, the vane being formed from an alloy containing 0À15% C; 15À5% Cr; 9À7% Co; 8À4% Mo; 3À6% Ti; 4À2% Al; balance Ni, and the heating for brazing and diffusion is to a temperature of 2150‹ F. held for 30 minutes.
GB5429374A 1973-12-14 1974-12-16 Vacuum brazing of super-alloy articles Expired GB1454217A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US42467773A 1973-12-14 1973-12-14

Publications (1)

Publication Number Publication Date
GB1454217A true GB1454217A (en) 1976-11-03

Family

ID=23683479

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5429374A Expired GB1454217A (en) 1973-12-14 1974-12-16 Vacuum brazing of super-alloy articles

Country Status (2)

Country Link
CA (1) CA1011177A (en)
GB (1) GB1454217A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003660A1 (en) * 1978-02-02 1979-08-22 The University Of Dayton Method for cleaning a surface of an unbrazable metal part
EP0024142A1 (en) * 1979-07-31 1981-02-25 Chromalloy American Corporation Method for repairing a crack in a superalloy material and an article when so repaired
FR2564350A1 (en) * 1984-05-17 1985-11-22 Snecma DIFFUSION REPAIR PROCESS
US4965095A (en) * 1979-03-30 1990-10-23 Alloy Surfaces Company, Inc. Method for refurbishing used jet engine hot section airfoils
CN103624353A (en) * 2013-11-15 2014-03-12 沈阳黎明航空发动机(集团)有限责任公司 Brazing method for DD5 single crystal alloy
RU2545282C2 (en) * 2013-05-22 2015-03-27 Василий Семенович Калмыков Removal of scale from turbomachine parts
CN105014171A (en) * 2014-04-29 2015-11-04 核工业西南物理研究院 Quick connection method for tungsten/copper in electron beam braze welding manner
CN105499728A (en) * 2015-12-25 2016-04-20 青岛玻莱莫斯新材料技术有限公司 Salt bath brazing technology process of aluminum alloy
CN114192919A (en) * 2021-12-03 2022-03-18 郑州科创电子有限公司 Vacuum brazing device for aviation parts
CN115647555A (en) * 2022-12-13 2023-01-31 杭州沈氏节能科技股份有限公司 Welding method and welding product of high-temperature alloy micro-channel heat exchanger
CN116984725A (en) * 2023-09-27 2023-11-03 中国航发沈阳黎明航空发动机有限责任公司 FGH98 alloy diffusion welding method added with pure nickel foil interlayer
CN117680807A (en) * 2024-02-02 2024-03-12 潍坊市连庆封头制造有限公司 Vacuum-pumping welding device for pressure vessel

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003660A1 (en) * 1978-02-02 1979-08-22 The University Of Dayton Method for cleaning a surface of an unbrazable metal part
US4965095A (en) * 1979-03-30 1990-10-23 Alloy Surfaces Company, Inc. Method for refurbishing used jet engine hot section airfoils
EP0024142A1 (en) * 1979-07-31 1981-02-25 Chromalloy American Corporation Method for repairing a crack in a superalloy material and an article when so repaired
FR2564350A1 (en) * 1984-05-17 1985-11-22 Snecma DIFFUSION REPAIR PROCESS
EP0165104A1 (en) * 1984-05-17 1985-12-18 Societe Nationale D'etude Et De Construction De Moteurs D'aviation, "S.N.E.C.M.A." Repair method by diffusion
US4655383A (en) * 1984-05-17 1987-04-07 Societe Nationale D'etude Et De Construction De Moteurs D'aviation Method of repairing heat resistant alloy parts
RU2545282C2 (en) * 2013-05-22 2015-03-27 Василий Семенович Калмыков Removal of scale from turbomachine parts
CN103624353A (en) * 2013-11-15 2014-03-12 沈阳黎明航空发动机(集团)有限责任公司 Brazing method for DD5 single crystal alloy
CN105014171A (en) * 2014-04-29 2015-11-04 核工业西南物理研究院 Quick connection method for tungsten/copper in electron beam braze welding manner
CN105499728A (en) * 2015-12-25 2016-04-20 青岛玻莱莫斯新材料技术有限公司 Salt bath brazing technology process of aluminum alloy
CN114192919A (en) * 2021-12-03 2022-03-18 郑州科创电子有限公司 Vacuum brazing device for aviation parts
CN115647555A (en) * 2022-12-13 2023-01-31 杭州沈氏节能科技股份有限公司 Welding method and welding product of high-temperature alloy micro-channel heat exchanger
CN115647555B (en) * 2022-12-13 2023-04-21 杭州沈氏节能科技股份有限公司 Welding method and welding product of high-temperature alloy microchannel heat exchanger
CN116984725A (en) * 2023-09-27 2023-11-03 中国航发沈阳黎明航空发动机有限责任公司 FGH98 alloy diffusion welding method added with pure nickel foil interlayer
CN116984725B (en) * 2023-09-27 2023-12-01 中国航发沈阳黎明航空发动机有限责任公司 FGH98 alloy diffusion welding method added with pure nickel foil interlayer
CN117680807A (en) * 2024-02-02 2024-03-12 潍坊市连庆封头制造有限公司 Vacuum-pumping welding device for pressure vessel
CN117680807B (en) * 2024-02-02 2024-04-16 潍坊市连庆封头制造有限公司 Vacuum-pumping welding device for pressure vessel

Also Published As

Publication number Publication date
CA1011177A (en) 1977-05-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee