Welder TIG and ARC Interview Questions and Answers

There are various types of welding, including T-joints, butt joints, lap joints, corner joints, and top-to-bottom and bottom-to-top welding.

• T-joints involve welding two pieces of metal perpendicular to each other, forming a T shape.

• Butt joints involve welding two pieces of metal end-to-end.

• Lap joints involve welding two pieces of metal that overlap each other.

• Corner joints involve welding two pieces of metal that meet at a corner.

• Top-to-bottom and bottom-to-top welding involv...read more

Incomplete penetration is the weld defect that occurs on the joint due to less flow rate of shielding argon gas.

• Incomplete penetration occurs when the weld metal does not penetrate through the joint completely.

• This can lead to weak and unreliable welds.

• It can be caused by insufficient shielding gas flow rate, improper welding technique, or incorrect welding parameters.

• Examples of incomplete penetration include lack of fusion, cold lap, and undercutting.

• Proper gas flow rate an...read more

Welding is the process of permanently joining two metal parts by melting and fusing them together.

• Welding involves the use of heat to melt the base metals and a filler material to create a strong joint.

• Different welding techniques include TIG (Tungsten Inert Gas) and ARC (Shielded Metal Arc) welding.

• TIG welding uses a non-consumable tungsten electrode to create the arc and requires a separate filler material.

• ARC welding uses a consumable electrode coated in flux to create the...read more

Welding positions in pipes include 1g, 2g, 3g, 4g, 5g, and 6g.

• 1g is a flat position with the pipe in a horizontal position

• 2g is a horizontal position with the pipe in a vertical position

• 3g is a vertical position with the pipe in a fixed position

• 4g is a fixed position with the pipe in a horizontal position

• 5g is a horizontal position with the pipe at a 45-degree angle

• 6g is a fixed position with the pipe at a 45-degree angle

TIG stands for Tungsten Inert Gas.

• TIG is a welding process that uses a non-consumable tungsten electrode to produce the weld.

• The electrode and the weld area are protected from atmospheric contamination by an inert gas, typically argon.

• TIG welding is commonly used for high-quality welds on thin materials, stainless steel, and non-ferrous metals.

• It provides precise control over the welding process and produces clean and strong welds.

• TIG welding is also known as Gas Tungsten Arc...read more

The perfect welding technique depends on the specific project and materials being used.

• The perfect welding technique can vary based on factors such as the type of metal being welded, the thickness of the materials, and the desired strength of the weld.

• For TIG welding, a perfect technique involves using a non-consumable tungsten electrode to create a precise and clean weld on thin materials like stainless steel or aluminum.

• For ARC welding, a perfect technique involves using a ...read more

Yes, Tig welding uses gas to protect the weld pool from atmospheric contamination.

• Tig welding uses a shielding gas, typically argon or a mixture of argon and helium, to protect the weld pool.

• The gas creates a stable arc and prevents oxidation of the weld.

• Gas flow rate and composition are important factors in Tig welding process.

• Examples of Tig welding gas include pure argon for welding aluminum and a mix of argon and CO2 for welding steel.

Mig welding stands for Metal Inert Gas welding, a process where a continuous solid wire electrode is fed through a welding gun and into the weld pool.

• Mig welding uses a shielding gas to protect the weld from atmospheric contamination.

• The wire electrode melts and fuses with the base metal to form the weld.

• Commonly used in automotive, construction, and manufacturing industries.

• Provides high welding speeds and can be used on a variety of metals.

• Example: Welding together two piec...read more