co2 welding, Mechanical Engineering

CO2 Welding

CO2 Welding is a variation of GMAW. Here the inert gas is replaced by gas mixtures or carbon dioxide, which are chemically active. The carbon dioxide decomposes in the welding arc heat and oxygen is produced. To remove this, de-oxidants are employed in the welding wire. This produces a glassy layer of slag over the weld metal, which can melt off in the subsequent passes, or it can be brushed and removed. Argon +1 to 2 % O2 is used as shielding gas for alloy steels and stainless steels. Argon +3 to 5 % O2 is used as shielding gas for carbon steels and low alloy steels. CO2 alone is enough for carbon steels. CO2 Welding is replacing shielded metal arc welding in the fabrication of structural, pipes, automobile products storage tanks and machinery, etc.

Posted Date: 9/13/2012 5:15:26 AM | Location : United States







Related Discussions:- co2 welding, Assignment Help, Ask Question on co2 welding, Get Answer, Expert's Help, co2 welding Discussions

Write discussion on co2 welding
Your posts are moderated
Related Questions
this is a problem for designing wrecking crane. there are 2 scenarios, one is when ball is held and one where its at maximum. i calculated the loads and now need to find the follow

Q. Corrosion Control in Oil-Treating Equipment? Bitumen provides adequate internal protection for Inlet Slug Catcher, FWKO and Treater. Due to high operating temperature, inter

analytical method for determining the acceleration and velocity?

Q. Explain about Hydrostatic Test? All paragraph must be met when the hydrostatic test is employed. UG-99(b), including footnote 32, shall be considered to be the standard hyd


How can I get the literature review on fabrication and construction of a modified Co2 single stroke positive displacement pump driven with electric motor

a) Consider a brake of your choice and Illustrate self locking and self energizing condition & its significance in brakes design. b) Discuss thermal condition in brake design.

An enclousure measures 1.5 x 1.75m with a height of 2m.Under steady state equilibrium conditions , the ceiling and walls are maintained at 525K and floor at 400K. Calculate the

constraint force