shielding gas


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shielding gas

[′shēld·iŋ ‚gas]
(metallurgy)
Gas, such as nitrogen, oxygen, and carbon dioxide, used in shielded arc welding to protect molten weld from contamination and damage by the atmosphere.
References in periodicals archive ?
Key fundamental considerations are discussed in the Ten Tips guidelines together with areas such as shielding gas selection and the correct welding gloves.
The wire is self-shielded and requires no shielding gas. Available in a variety of diameters and package options.
The addition of hydrogen to argon shielding gas improves weld pool wet ability, bead shape control, surface cleanliness, and heat input without causing hydrogen-induced cracking (Louthan Jr., M.R.
Where an ER70S-6 wire provides acceptable mechanical properties, OEM Fabricators now uses 0.045" ER70S-6 wire, 90/10 argon/C[O.sub.2] shielding gas and the Accu-Pulse[TM] (GMAW-P) welding process provided by 28 new Axcess[TM] multi-MIG welding systems from Miller Electric Mfg.
Argon is a suitable shielding gas for lasers operating in the CW mode; however, it ionizes too readily to be useful in beams of greater power density such as those produced by pulsing.
The M200's automatic shield gas control (patent pending) simplifies set-up of shielding gas, requiring no use of a separate flow meter.
In addition to the data concerning the pitch, roll, yaw and trajectory the trainer would receive information concerning the main parameters set by the trainee on the welding machine such as current amplitude and volume of shielding gas.
In any event, fume extraction systems must be designed to minimize the risk of disturbing the shielding gas.
"You can see the consistency in our use of consumables like wire and shielding gas. There's little day-to-day variation.
ESAB's latest Shield-Bright stainless cored wires are rutile types with an excellent weldability on conventional non-pulsing power sources Ar/CO2 mixed gas and C02 shielding gas. Always operating in the smooth spray arc mode, they are welder-friendly wires with a very low spatter level.