This is a close-up view of porosity in a TIG weld. We will examine some of the causes for weld porosity and ways to prevent it. Q.When I TIG-weld a patch panel into an old car and then grind the weld ...

This shows a plug tack-welded into place, after using a step drill to remove a porous area in the weld. Last time we looked at some of the causes of weld porosity, and some ways to prevent it. This ...

In the manufacture of heat exchanger components for aircraft, it was found that using the pulsed TIG method to weld the inlet and return manifolds was giving excessive porosity. Consequently an ...

Experienced welders know that without the right information, it's easy to sacrifice quality, lose time, and become frustrated with gas-tungsten-arc welding (GTAW), also known as tungsten-inert-gas ...

Solving one problem can create another. Safety always comes first. Amid competitive bidding, contract deadlines and the general drive to gain the best productivity and quality, welding operations in ...

Mixed farmer Richard Archer has spent more than 35 years teaching the agricultural fraternity to weld, which makes him more than qualified to give advice on arc welding to help farmers polish up their ...