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filler-metal flow

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Published: 01 November 2011
Fig. 7.1 Extensive flow capability of braze filler metal: (a) filler metal wire is placed around outer surface; (b) after brazing, filler metal has melted and flowed to close and seal all gaps. Source: Ref 7.1 More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290165
EISBN: 978-1-62708-306-5
... may be more economical. Brazing requires tightly mating parts to ensure capillary flow of the filler metal. This often involves expensive machining to attain the desired fit. If not properly removed, braze and solder flux residues can cause corrosion. A certain degree of skill is required...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230401
EISBN: 978-1-62708-298-3
... of beryllium pressure vessels and using aluminum alloy 718 filler metal (0.762 mm, or 0.03 in., diameter) were 250 to 380 mm/s (9 to 15 in./s) wire feed speed; 18 to 51 mm/s (0.7 to 2 in./s) travel speed; 135 to 200 A direct current reversed polarity (DCRP) weld current (in DCRP, the electrons flow from...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120065
EISBN: 978-1-62708-269-3
... distortion. Brazing at the aging temperature is impractical because few filler metals melt and flow at these temperatures. Selection of filler metal for brazing titanium alloys is critical because titanium alloys react with many of the constituents of brazing filler metals to form undesirable...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290067
EISBN: 978-1-62708-319-5
... polymers undergo melting to enable flow. When frozen, the backbone holds the particles in place. To clarify, for thermal shaping, some binders rely on fillers that are liquid at room temperature, while others rely on fillers that are solid at room temperature. Heat is used to melt all of the binder...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2004
DOI: 10.31399/asm.tb.ps.t62440001
EISBN: 978-1-62708-352-2
... and also the chemical reactions with fluxes, where these are used. Another key aspect of joining with fillers is the manner and extent of flow of the molten filler into the joint. These are influenced by: Dimensions of the joint Spread characteristics of the filler metal Surface condition...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.pb.t51230001
EISBN: 978-1-62708-351-5
..., fluid flow, filler spreading characteristics, surface roughness of components, dissolution of parent materials, new phase formations, significance of the joint gap, and the strength of metals. The chapter also describes issues in processing aspects that must be considered when designing a joint...
Image
Published: 01 April 2004
Fig. 4.29 Schematic illustration of the outward flow by a central cross of filler metal, a configuration that helps to prevent entrapment of vapor in pockets in a large-area joint More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290079
EISBN: 978-1-62708-306-5
... is a manual process in which the metal surfaces to be joined are melted progressively by heat from a gas flame, with or without filler metal, and are caused to flow together and solidify without the application of pressure to the parts being joined. The most important source of heat for oxyfuel gas welding...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030096
EISBN: 978-1-62708-282-2
... the heat input to the weld and/or by flowing molten filler metal over the surface of the unmixed zone to form a barrier to the service environment. Care must be taken in this latter operation to avoid cold laps and lack-of-fusion defects. In both cases, preferential attack is avoided as long as the surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.pb.t51230143
EISBN: 978-1-62708-351-5
... to be considered or, alternatively, the functional requirements of the product may need to be relaxed. 4.1 Metallurgical Constraints and Solutions In principle, most metals can be joined using filler alloys. However, when there is a requirement to braze two different parent materials together, the available...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930023
EISBN: 978-1-62708-359-1
... Abstract This article describes the weldability tests that are used to evaluate the effects of welding on such properties and characteristics as base-metal and weld-metal cracking; base-metal and weld-metal ductility; weld penetration; and weld pool shape and fluid flow. It also describes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720411
EISBN: 978-1-62708-305-8
... metals and the types of flaws exhibited by brazed joints. brazed joints brazing filler metals eddy current inspection liquid penetrant inspection magnetic particle inspection nondestructive inspection radiographic inspection ultrasonic inspection visual inspection welding weldments...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480265
EISBN: 978-1-62708-318-8
... in total interstitial content of commercially pure titanium affect metal notch toughness ( Ref 12.15 ), as shown in Fig. 12.3 . These data were obtained from welds made using several different filler metals in two base metals. Filler metal B had the lowest interstitial content (total carbon, oxygen...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2004
DOI: 10.31399/asm.tb.ps.t62440145
EISBN: 978-1-62708-352-2
... in the joint, lack of wetting, and, at the other extreme, excessive erosion of one or more of the parent materials can usually be circumvented by interposing a layer of a different metal between the filler and the parent material and thereby altering the metallurgical constitution of the joints. Fluxes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280149
EISBN: 978-1-62708-267-9
... welding techniques, defect prevention, fixturing, heat treatments, and general practices, including the use of filler metals. It also discusses several solid-state welding methods, superplastic forming, and transient liquid phase bonding, a type of diffusion welding process. The chapter includes extensive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870161
EISBN: 978-1-62708-299-0
... of weldments in aluminum alloys is affected by the alloy being welded and by the filler alloy and welding process used. Galvanic cells that cause corrosion can be created because of corrosion potential differences among the base (parent) metal, the filler metal, and the heat-affected regions where...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.pb.t51230105
EISBN: 978-1-62708-351-5
... elements that might react with the components to form surface films and inhibit flowing of and wetting by the braze. Chemically active atmospheres, both gases and fluxes, which are designed to react with surface films present on the components and/or the filler metal during the joining cycle and remove...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060117
EISBN: 978-1-62708-261-7
... of the deforming metal and a tool. The nature of the material flow (plastic deformation) primarily depends on the type of forming process that is used, the temperature, the applied loads, and the frictional stresses between the tool and the workpiece material. The major distinction between bulk and sheet...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820077
EISBN: 978-1-62708-339-3
... on the weldability of ferritic stainless steels can be found in the following section). Welds in ferritic stainless steel base metals can be produced in several ways: (a) autogenously (i.e., without the addition of filler metal), (b) with a matching filler metal, (c) with an austenitic stainless steel filler...