3G 4G Arc Welder Interview Questions and Answers

Arc welders are devices used to join metal pieces together by creating an electric arc between the welding electrode and the workpiece.

• Arc welders use electricity to generate heat, which melts the metal pieces being joined together.

• The electric arc is created by passing a current through the welding electrode, which then melts and deposits metal onto the workpiece.

• Arc welding is commonly used in construction, fabrication, and repair work.

• Different types of arc welders include...read more

Welding defects are imperfections in the weld that can compromise its strength and integrity.

• Common welding defects include porosity, lack of fusion, undercut, and cracks.

• These defects can be caused by improper welding techniques, poor quality materials, or environmental factors.

• Examples of welding defects include blowholes in the weld, incomplete penetration, and slag inclusions.

• Inspecting welds regularly and following proper welding procedures can help prevent welding defec...read more