SHIELDING GASES

Shielding gas is directed by the torch to the arc and weld pool to protect the electrode and the molten weld metal from atmospheric contamination. 

Argon and helium or mixtures of the two are the most common types of inert gas used for the shielding. Argon hydrogen mixtures are used for special applications. 

Posted Date: 9/14/2012 8:37:49 AM | Location : United States

Ask an Expert

Related Discussions:- Shielding gases, Assignment Help, Ask Question on Shielding gases, Get Answer, Expert's Help, Shielding gases Discussions

Write discussion on Shielding gases
Your posts are moderated

Write your message here..

Related Questions

Mechanics, labbis theorem labbis theorem

Displacement or swept volume, Displacement or Swept Volume ( V s ) : The ... Displacement or Swept Volume ( V s ) : The nominal volume swept by the working piston when travelling from one dead centre to the other is called the displacement volume. It is e

Engine keeps on running after ignition is switched off, If Engine Keeps on ... If Engine Keeps on Running after Ignition is Switched Off Causes of Problem Remedy Pre-ignition due to very hot spark plug used

Find out stress - strain and elongation of bar, Find out stress - strain an... Find out stress - strain and elongation of bar: A circular rod having diameter 20 m and 500 m long is subjected to the tensile force of 45kN. The modulus of elasticity for st

I.c.engine, compression ignition engine fore stork with neat daysgram compression ignition engine fore stork with neat daysgram

IDE101, Polygon law of forces Polygon law of forces

Pendulum pump mechanism, describe about pendulum pump mechanism and dia... describe about pendulum pump mechanism and diagram

Find the minimum power of the pump, Consider the power system as designed b... Consider the power system as designed below. The duty fluid is water, and has a mass flow 0.75 kg/ s and all piping through which the liquid flows has diameter 1'', while the steam

How can you determine velocity by electromagnetic method, Q. How can you de... Q. How can you determine velocity by electromagnetic method? In electromagnetic method, a magnetic field is generated by the electric current flowing through a coil fixed below

Explain rate pressure product, Q. Explain Rate Pressure Product? The sy... Q. Explain Rate Pressure Product? The systolic blood pressure is multiplied by the heart rate to provide the double product or modified fusion time index. On presence of an obs