Shielding gas-argon-advantages of argon, Mechanical Engineering

Argon


Argon is approximately one and one third times as heavy as air and ten times heavier than helium. Argon, after leaving the torch nozzle, forms a blanket over the weld area. ,Welding grade argon is refined to a minimum purity of 99.95 %. This isacceptable for TIG welding of most metals except for the reactive and refractory metals, for which a minimum purity of 99.997 % is required.


Advantages of argon.

 

  • Smoother, quieter arc action.
  • Reduced penetration & cleaning action when welding materials such as aluminium and magnesium.
  • Lower cost and greater availability.
  • Lower flow rates for good shielding.
  • Better cross draft resistance.
  • Easier arc starting due to low ionisation potential of 2.52 x 1G- 18J (15 JeV)
  • The reduced penetration of an argon shielded arc is particularly helpful in vertical or overhead welding since the tendency for the base metal to sag or run is decreased. 
Posted Date: 9/14/2012 8:44:49 AM | Location : United States







Related Discussions:- Shielding gas-argon-advantages of argon, Assignment Help, Ask Question on Shielding gas-argon-advantages of argon, Get Answer, Expert's Help, Shielding gas-argon-advantages of argon Discussions

Write discussion on Shielding gas-argon-advantages of argon
Your posts are moderated
Related Questions
Free Torsional Vibration of a Single Rotor System

THE WELDING ARC The heat that is developed at the cathode and anode of an arc discharge is able to melt most of the metals and alloys. Hence, the arc is used as an intense heat

Airport Layout: The main components of an airport are: (a)        Runways (b)       Taxiways (c)        Apron (d)       Terminal area (i)        Terminal build

what is system of force?

Before installing a bolt, stud or nut, threads shall be examined to ensure that there are no incompletely cut threads in the engagement zone (both internal and external) or burns,

If the expression is quasi-static, determine Q, ΔU and W for the process. In another process the same system expands according to the similar pressure- volume relationship and f

what is the difference betwen proof stress and rupture stress?

Drivers for a common international standard The drivers for a common international standard included : Global commerce and data exchange; Increasingly complex produ

Derive mathmatical equation for Bernoull's equation, what are the application of Bernoull's equation and illustrate any one.