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Welding processes work around the melting point of the base metal and require the base metal itself to begin melting. They usually require more precise distribution of heat from a small torch, as melting the entire workpiece is avoided by controlling the distribution of heat over space, rather than
147:, bare electrode wire or rod, tubular electrode wire, and welding fluxes. Sometimes non-consumable electrodes are included as well, but since these metals are not consumed by the welding process, they are normally excluded.
121:, a major use for the filler rod is as a consumable electrode that also generates heat in the workpiece. An electrical discharge from this electrode provides heat that melts both the electrode and heats the base metal.
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aluminium alloy, use offcut strips of the same metal as filler. Steels are usually welded with a filler alloy made specially for the purpose. To prevent rusting in storage, these wires are often lightly copper plated.
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Filler alloys have a lower melting point than the base metal, so that the joint may be made by bringing the whole assembly up to temperature without everything melting as one. Complex joints, typically for jewelry or
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is an electric welding process that uses a non-consumed tungsten electrode to provide heat, with the filler rod added manually. This is more like gas welding as a process, but with a different heat source.
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boilermaking, may be made in stages, with filler metals of progressively lower melting points used in turn. Early joints are thus not destroyed by heating to the later temperatures.
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processes only require part of the existing base metal to be melted and this is sufficient, provided that the joint is already mechanically close-fitting before welding.
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excavating tools or digger bucket teeth. A hard, but more expensive and sometimes brittle, facing alloy is deposited onto the wear surfaces of mild steel tools.
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use a higher temperature filler that melts at a temperature which may approach that of the base metal, and which may form a eutectic alloy with the base metal.
109:, are typically autogenous and a separate wire filler rod of the same metal is only added if there is a gap to fill. Some metals, such as lead or
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Soldering and brazing processes rely on a filler metal added to the joint to form the junction between the base metal parts.
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A specialist use for filler metal is where a deliberately different metal is to be deposited. This is often done for
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uses a filler that melts at a lower temperature than the workpiece, often a lead-tin solder alloy. Brazing and
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limiting the maximum heat. If filler is used, it is of a similar alloy and melting point to the base metal.
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or hammer welding uses hammering to close up the hot joint and also to locally increase its heat.
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Cary, Howard B. and Scott C. Helzer (2005). Modern
Welding Technology. Upper Saddle River,
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and are a major factor in that method's popularity.
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143:Four types of filler metals exist—covered
90:Not all welding processes require filler metal.
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160:Covered electrodes are used extensively in
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27:Metal added to join two other metal parts
42:added in the making of a joint through
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176:and bare electrode rods are used in
221:, welding processes without filler
188:Tubular electrode wire is used in
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172:Bare electrode wires are used in
367:Shielded metal (Stick/MMA/SMAW)
357:Gas tungsten (Heliarc/TIG/GTAW)
352:Gas metal (Microwire/MIG/GMAW)
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332:Atomic hydrogen (Athydo/AHW)
200:Welding fluxes are used in
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162:shielded metal arc welding
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390:Electric resistance (ERW)
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178:gas tungsten arc welding
184:Tubular electrode wires
214:Amorphous brazing foil
190:flux-cored arc welding
584:Tools and terminology
235:: Pearson Education.
202:submerged arc welding
174:gas metal arc welding
168:Bare electrode wires
420:Friction stir (FSW)
395:Electron-beam (EBW)
105:processes, such as
517:Heat-affected zone
445:Oxyacetylene (OAW)
219:Autogenous welding
156:Covered electrodes
92:Autogenous welding
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400:Electroslag (ESW)
347:Flux-cored (FCAW)
16:(Redirected from
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430:Laser beam (LBW)
337:Electrogas (EGW)
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527:Residual stress
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382:Other processes
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372:Submerged (SAW)
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117:With electric
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64:Soft soldering
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510:Related terms
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18:Filler metals
491:Power supply
481:Filler metal
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435:Laser-hybrid
362:Plasma (PAW)
278:Metalworking
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107:lead burning
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36:filler metal
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32:metalworking
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554:Fabrication
532:Weldability
324:Arc welding
125:TIG welding
119:arc welding
111:Birmabright
103:gas welding
574:Metallurgy
455:Ultrasonic
450:Spot (RSW)
405:Exothermic
233:New Jersey
226:References
145:electrodes
138:hardfacing
132:Hardfacing
76:live steam
569:Machining
564:Jewellery
476:Electrode
469:Equipment
58:Soldering
52:soldering
604:Category
579:Smithing
415:Friction
208:See also
610:Welding
589:Welding
559:Forming
549:Casting
316:Welding
82:Welding
48:brazing
44:welding
486:Helmet
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96:Forge-
496:Robot
460:Upset
410:Forge
342:Flash
151:Usage
101:Many
50:, or
40:metal
38:is a
237:ISBN
34:, a
30:In
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.