In this weeks episode, we talking about how Porosity (pinholes) is caused and a tip and trick to fix it.
Porosity is caused by the absorption of Hydrogen, Oxygen, Nitrogen, or Contaminants, trapped in the weld pool.
One reason this could be caused is due to a lack of gas coverage since the contaminants from the atmosphere can enter the molten pool, creating pinholes in the solidified weld.
One easy way to manage porosity is by making sure you have enough gas coverage and gas flow. With 8 L/min for TIG, and 10 – 12 L/min for MIG