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flux removal techniques

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Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001455
EISBN: 978-1-62708-173-3
...), flux removal techniques, and postbraze heat treatment processes. It concludes with information on the safety precautions to be followed during the brazing process. aluminum alloys brazing chloride-active fluxes dip brazing fluoride-active fluxes flux removal techniques fluxless vacuum...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001269
EISBN: 978-1-62708-170-2
...-atmosphere techniques, such as Sendzimir oxidation/reduction method; other specialized methods, namely, fluxes, mechanical cleaning, and ultrasonic methods; or a combination of these. alkaline cleaning chemical pickling contaminant removal continuously applied coatings electrolytic cleaning...
Series: ASM Handbook
Volume: 4F
Publisher: ASM International
Published: 01 February 2024
DOI: 10.31399/asm.hb.v4F.a0007012
EISBN: 978-1-62708-450-5
... Abstract Spray quenching (or jet impingement) is the most common technique employed to improve the uniformity of heat removal and break the vapor layer, allowing for a high cooling rate to be achieved. This article presents the heat transfer characteristics of quenching a hot surface, which can...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005300
EISBN: 978-1-62708-187-0
... used by aluminum foundries to remove and separate inclusions from the molten aluminum alloy prior to casting. These include various methods of fluxing, degassing, and filtration in the furnaces and the gating systems ( Ref 3 , 6 , 7 , 8 , 9 , 10 , 11 ). Any of these techniques will have...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003831
EISBN: 978-1-62708-183-2
... of corrosion in soldered joints involves proper cleaning, proper selection of flux and flux removal, and use of soldering alloys that have corrosion resistance to meet the requirements. Corrosion of Brazed Joints Brazing is a widely used manufacturing technique due to its adaptability, applicability...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001460
EISBN: 978-1-62708-173-3
..., and PWB residues can be picked up by solder joints on the printed boards. These materials polymerize under prolonged exposure to the solder temperatures and become difficult to remove using conventional cleaning measures. Ionic species remaining from flux residues can cause corrosion on assembled solder...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003472
EISBN: 978-1-62708-195-5
... fluidity and part integrity. Good casting techniques direct oxides into the gate and riser system. Therefore, a more conservative approach would be to process gating separately with the fluxing procedure outlined below. Extra cleaning is required as the level of SiC in the alloy increases, since even low...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005306
EISBN: 978-1-62708-187-0
... and therefore cannot be removed by chemical fluxing techniques. Fractional oxidation or crystallization can yield liquid slag and solid crystals that are purer than the starting metal. Bismuth can also be precipitated from lead by adding alkali or alkaline earth metal reagents, such as calcium and magnesium...
Book Chapter

By David V. Neff
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005353
EISBN: 978-1-62708-187-0
... humidity conditions exacerbate not only hydrogen dissolution in the melt but also can retard the ability of any melt treatment to remove hydrogen, because a degassed melt can then readily redissolve additional hydrogen. Ingot, additives, and fluxes are other common sources of hydrogen. In the case...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001459
EISBN: 978-1-62708-173-3
.... Substrate material. Although the selection of the substrate base material is generally determined by criteria other than the joining technique, coatings can be used to enhance solderability. Flux. Flux selection is primarily based on promoting adequate wettability by the solder. However, the need...
Book Chapter

By Paul T. Vianco
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001401
EISBN: 978-1-62708-173-3
... soldering; larger packages (e.g., leaded or leadless chip carriers) may be damaged by exposure to the harsh environments (flux and molten solder) as well as be more prone to solder defects ( Ref 1 ). The wave soldering technique encompasses a sequence of processes, all of which are typically contained...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005566
EISBN: 978-1-62708-174-0
... the molten metal in the form of a slag. The slag then freezes over the newly solidified weld metal, continuing to protect the metal from possible contamination by nitrogen and oxygen while at elevated temperatures. After cooling and removing any unfused flux for reuse, the solidified slag may be easily...
Book Chapter

By Daryl D. Peter
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001388
EISBN: 978-1-62708-173-3
... distortion is no longer a factor, they are then quenched in hot water. The flux is then removed and the brazements are cleaned. The process technician must work closely with the designer to ensure that the part design will not trap flux or air during brazing. In addition, the process technician...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006336
EISBN: 978-1-62708-179-5
..., whereas an as-cast or rough part surface may require additional washing to remove excess penetrant and reduce nonrelevant indications. Because many factors affect the performance of a technique, parts with known surface discontinuities are often used to set up and test the system. The equipment used...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006535
EISBN: 978-1-62708-207-5
... by partial pressure diffusion. Rotary degassers provide the finest dispersion and intermixing of metal and fluxes for these purposes. Molten metal filtration for the removal of particulate contamination, introduced in the 1950s, also has grown in importance and application. Specific elements...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001273
EISBN: 978-1-62708-170-2
... is still molten by application of flux scrubbed in with a stainless steel brush and retinning of the questionable areas with tin sticks. If the workpiece is still not satisfactory, it must be reprocessed by mechanically removing all tinning and starting over with basic cleaning steps described below...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006529
EISBN: 978-1-62708-207-5
..., building and construction, process industry (cryogenics), marine applications, highway structures, beverage can ends Easily joined by various welding techniques, some can be brazed but with a special care. Not suitable for non-corrosive fluxes 6xxx Al-Mg-Si 6063 6061, 6066 6070 6101 6201 Excellent...