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
Proof of parallelogram law of forces

write the assumption made in derivetion of shear stress produced in circular shaft subjected to torsion

Alumina-Silica Composite  This composite is an especially usual refractory material. Due to easy availability and low cost aluminia-silica composite is extensively utilized in

Support reaction: Explain the support reaction? What are different types of support and their reactions? Sol.: When the numbers of forces are acting on a body, and the

What are combined footings? COMBINED FOOTINGS: When a footing supports two or more columns in the same line, it is called a combined footing. The combined footing which supp

This type of holon is mainly concerned along with carrying out the work in a fine and correct way at correct time.

Two identical rollers, each of weight W= 1000N are placed by an inclined plane and a vertical wall as shown below. Determine the reactions at the points of supports A, B, and C. Su

A  truss  is  shown  in  the  given figure. Compute  the horizontal deflection of  joint D formed by  both  the  load  and  fabrication  error  (bar  AE  is  30mm  too  long).  For

How can I approach regarding my assignment

Two mating spur gear with module pitch of 6.5 mm have 19 and 47 teeth of 20 degree pressure angle, and 6.5 mm addendum. Evaluate the number of pairs of teeth in contact and the ang