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Torch brazing

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047745
EISBN: 978-1-62708-235-8
...Abstract Abstract A 321 stainless steel radar coolant-system assembly fabricated by torch brazing with AWS type 3A flux, failed at the brazed joint when subjected to mild handling before installation, after being stored for about two years. It was revealed by visual examination of the failed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047756
EISBN: 978-1-62708-235-8
... during torch debrazing or rebrazing were recommended to minimize molten braze metal penetration. Alloying Grain boundaries Waspaloy UNS N07001 Fatigue fracture The inner ring of a spray-manifold assembly fabricated from Waspaloy (AMS 5586) fractured transversely through the manifold tubing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047636
EISBN: 978-1-62708-217-4
... ) then occurred in the tube near the flange. The tube hardness near the fracture was less than 53 HB, representing a condition harder than fully annealed (30 HB) but softer than a T4 temper (65 HB). The flange had been attached to the elbow by torch brazing, using BAlSi-3 filler metal (aluminum alloy 4145...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001478
EISBN: 978-1-62708-220-4
.... They could have conceivably arisen as a result of accidental heating by the flame of the brazing torch. If the temperature had been raised locally to above the lower critical — 730°C the region would harden subsequently due to the rapid cooling which would occur when the flame was removed. The cracks which...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001339
EISBN: 978-1-62708-215-0
... by radiography, these pipe weld areas were heated with a gas torch and radiographed again. If mercury was present in the suspect area, the mercury would have been redistributed by the heat. Many false leads, but no mercury regions were detected when radiography was used to assess the other welds in the equipment...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... by torch cutting a 38-mm (1 1 2 -in.) diam hole in the shell, inserting the nozzle and welding it in place. There was no evidence of cleanup after torch cutting the hole or of beveling of the wall edges around the hole to permit good weld penetration. Examination of the weld deposit revealed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
.... Joint design also includes many factors for the economical production of welds. Joints must be placed in locations that allow operators to readily make the joints. Weld joint designs also employ bevel angles and root openings to enhance accessibility to the welding torch (or electrode) and provide...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
...-4%Zr-2%Mo. The specimen was not etched. Fig. 22 Light micrographs depicting (a) excessive and (b) low relief around voids in a braze between an austenitic stainless steel and Monel. The specimen was etched with glyceregia. Fig. 23 Light micrograph showing 6 μm diamond (arrows...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... of a prepared specimen of Ti-6%Al-2%Sn-4%Zr-2%Mo. The specimen was not etched. Fig. 14 Light micrographs depicting (a) excessive and (b) low relief around voids in a braze between an austenitic stainless steel and Monel. The specimen was etched with glyceregia. Fig. 15 Light micrograph...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
.... Dissimilar-metal crevices, such as at threaded connections, are to be avoided, if possible. Crevices should be sealed, preferably by welding or brazing, although putties are sometimes used effectively. Replaceable sections of the more active member should be used at joints, or the corrosion allowance...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
..., such as at threaded connections, are to be avoided if possible. Crevices should be sealed, preferably by welding or brazing, although putties or nonmetallic sealants are sometimes used effectively. Replaceable sections of the more active member should be used at joints, or the corrosion allowance of this section...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1