gas-mison-use-47.html
AGA CW Handbook A4_32130-UK
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terminology
→ → anode: →positive→electrode → → austeniticstainlesssteel: →a→steel→with→a→microstructure→that→is→ austenitic→at→room→temperature→(the→most→common→stainless→steels,→ for→example→aisi→304,→aisi→316)→ → → duplexsteel: →a→steel→with→a→microstructure→that→is→half→ferritic→and→ half→austenitic→at→room→temperature→ → → ferriticstainlesssteel: →a→steel→with→a→microstructure→that→is→mainly → ferritic→at→room→temperature→ → → htp: →the→finnish→threshold→limit→value.→exposure→limits→defined→by→ the→ministry→of→labour→which→should→not→be→exceeded→at→workplaces.→ htp 8h →and→htp 15min →are→the→values→of→average→harmful→concentrations→ over→8→hours→and→15→minutes,→respectively→ → → cathode: →negative→electrode → → magwelding: →gas→arc→welding→in→which→the→arc→burns→between→the→ → fed→filler→material→wire→and→the→base→material.→a→reactive→gas→is→used→→ → as→the→shielding→gas→(mag→=→metal→active→gas)→ → → metalfumefever: a→condition→resembling→flu→caused→by→the→breathing→ → of→metal→oxides.→its→symptoms→include→fever,→tremors,→sweating→an→→ → nausea → → migwelding: →gas→arc→welding→in→which→the→arc→burns→between→the→ → fed→filler→material→wire→and→the→base→material.→an→inert→gas→is→used→as→→ → the→shielding→gas→(mig→=→metal→inert→gas)→ → → migsoldering: →mig→welding→using→a→filler→material→wire→with→a→low→ → melting→point→(aluminium→bronze,→silicon→bronze)→without→melting→the→→ → base→material→ → → micrometreµm: →one→millionth→of→a→metre→=→0.001→mm → → ozone(o 3 ): →a→colourless,→highly→toxic→gas.→when→oxygen→molecules→ → (o 2 )→are→subjected→to→uv→radiation,→for→example→from→a→welding→arc,→ → ozone→is→generated→ → → spotcorrosion: →localised→spot-like→corrosion → → mmawelding: →arc→welding→where→the→arc→burns→between→the→elec → trode→and→base→material→(mma→=→manual→metal→arc) → → ppm
: →one→millionth→(ppm→=→parts→per→million) → → irondustlung: →lung→inflammation→caused→by→breathing→iron→dust → → high-alloyausteniticsteel: →stainless→austenitic→steel,→the→corrosion→ → resistance→of→which→has→been→improved→by→alloying → → superduplex
: →high-alloy→duplex→steel → → tigwelding: →gas→arc→welding→in→which→the→arc→burns→between→a→ → non-consumable→electrode→(tungsten)→and→the→base→material.→→ → welding→is→performed→with→or→without→filler→material.→inert→shielding→→ → gas→is→used→(tig→=→tungsten→inert→gas)→ → → coredwirewelding: →mig→welding→using→a→metal→powder,→rutile→or→ → alkaline-cored→wire→instead→of→solid→wire→ terminology.
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