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argon    音标拼音: ['ɑrg,ɑn]
n. 氩



argon
n 1: a colorless and odorless inert gas; one of the six inert
gases; comprises approximately 1% of the earth's atmosphere
[synonym: {argon}, {Ar}, {atomic number 18}]

Noble \No"ble\, a. [Compar. {Nobler}; superl. {Noblest}.] [F.
noble, fr. L. nobilis that can be or is known, well known,
famous, highborn, noble, fr. noscere to know. See {know}.]
1. Possessing eminence, elevation, dignity, etc.; above
whatever is low, mean, degrading, or dishonorable;
magnanimous; as, a noble nature or action; a noble heart.
[1913 Webster]

Statues, with winding ivy crowned, belong
To nobler poets for a nobler song. --Dryden.
[1913 Webster]

2. Grand; stately; magnificent; splendid; as, a noble
edifice.
[1913 Webster]

3. Of exalted rank; of or pertaining to the nobility;
distinguished from the masses by birth, station, or title;
highborn; as, noble blood; a noble personage.
[1913 Webster]

Note: Noble is used in the formation of self-explaining
compounds; as, noble-born, noble-hearted, noble-minded.
[1913 Webster]

{Noble gas} (Chem.), a gaseous element belonging to group
VIII of the periodic table of elements, not combining with
other elements under normal reaction conditions;
specifically, {helium}, {neon}, {argon}, {krypton},
{xenon}, or {radon}; also called {inert gas}.

{Noble metals} (Chem.), silver, gold, and platinum; -- so
called from their resistance to oxidation by air and to
dissolution by acids. Copper, mercury, aluminium,
palladium, rhodium, iridium, and osmium are sometimes
included.
[1913 Webster]

Syn: Honorable; worthy; dignified; elevated; exalted;
superior; sublime; great; eminent; illustrious;
renowned; stately; splendid; magnificent; grand;
magnanimous; generous; liberal; free.
[1913 Webster]


Argon \Ar"gon\, n. [NL., fr. Gr. ?, neut. of ? inactive; ? priv.
? work.] (Chem.)
A colorless, odorless gas occurring in the air (of which it
constitutes 0.93 per cent by volume), in volcanic gases,
etc.; -- so named on account of its inertness by Rayleigh and
Ramsay, who prepared and examined it in 1894-95. Symbol, A;
at. wt., 39.9. Argon is condensible to a colorless liquid
boiling at -186.1[deg] C. and to a solid melting at
-189.6[deg] C. It has a characteristic spectrum. No compounds
of it are known, but there is physical evidence that its
molecule is monatomic. Weight of one liter at 0[deg] C. and
760 mm., 1.7828 g.
[Webster 1913 Suppl.]


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  • Liquid Argon - WeldingWeb
    Im looking for information from anyone who have experience with liquid argon We have four welding stations all using argon Currently we use cylinders and go through approximately 5 per week Is it worth switching to the liquid, from a financial and quality point of view, or stick with the cylinders thanks
  • Argon - WeldingWeb
    Last time i welded w argon at the same place is when i got really sick its the heavier concentrations of argon that r a concern I was inside a 8' pressure vessel stainless hastelloy inconel tube welding the ventilation fan got turned off 20-30 min later im puking and barely able to breath welding with 98 2 argon O2 fronius tig welder
  • 100% Argon on Steel - weldingweb. com
    Hello Insaneride, Argon, Helium, Argon Helium mix, any three will "work" for tig on steel Likely the most economical and widely used: Argon on steel, the other two on steel are really overkill and not economically a good choice Advantage with straight Helium and DC tig, possible to weld aluminum, particularly thick sections
  • Food Grade Argon vs Regular Argon - WeldingWeb
    In many cases, a blanket that stays put will do the job better than several complete headspace volumes of nitrogen Argon is the cheapest and most effective means for most inert gassing In truth, gas cost is chump change At 6 5 cents a cubic foot, an entire 1000 gallon headspace full of argon costs nine bucks A barrel of argon costs fifty cents
  • tig gas pressure - WeldingWeb
    TIG 10 to 15 MIG 25 to 30 He is not the same as AR the regulator is marked diferent Argon works great for aluminum there is no need for HE unless you are doing something thick or critical Im making a USCG inspected gas tank for a charter boat right now Im using 3 16" bright AL treadplate Im using pulse MIG with 100% argon the welds are great
  • What size argon bottle? - WeldingWeb
    I am going to convert my mig to gas and wanted your input as to what size argon bottle I need for my back yard shop I have 2 patch panels to replace now and don't use it more than 3 or 4 times a month after that I know your comments and suggestions will help Thanks and have a great day, Ken
  • flux core with argon? - Page 2 - WeldingWeb
    Pure Argon will cause undercut along the edges and a high bead profile CO2 or just O2 added to the gas make the arc hotter and wet out the edges Argon in its pure form is generally used when welding on reactive metals or Aluminum and other "Oxide" heavy materials to keep the oxide layer from building up immediately
  • Why is helium hotter than argon? - WeldingWeb
    Actually it is the opposite; Helium is a poorer conductor of electricity than Argon, so the arc voltage is higher For example, a 200A TIG arc with straight Argon is around 14V; a 200A arc with straight Helium is around 25V So about 2800W with Argon, vs 5000W with helium Same amps but many more watts, and watts are what makes the heat John
  • Argon Flow meter vs. Flow Gauge - WeldingWeb
    I've been burning thru a 125CF argon tank in 3-4 hours instead of the 8 or so I'd expect out of it So for grins I bought an HTP flow meter to replace the no-name flow gauge (with two dials on it) that I had With the old gauge, triggering the torch on I could hear a constant hiss and feel the gas blowing out of the torch
  • 75 25 and Argon tank - WeldingWeb
    Whether it is new or 10 years old, used once or filled 50 times with 75 25, a tank can easily be changed over to Argon or any other gas The company would need to vacuum out the tank then fill with the appropriate gas That is the same procedure that is used when they hydrostatically test the cylinder





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