Welder and Gas Cutter Interview Questions and Answers

The thickness of mild steel wire can vary depending on the specific type and application.

• The thickness of mild steel wire is typically measured in gauge sizes, with common sizes ranging from 10 gauge to 30 gauge.

• Thicker wires, such as 10 gauge, are around 0.1345 inches in diameter, while thinner wires, such as 30 gauge, are around 0.0104 inches in diameter.

• The thickness of mild steel wire can also be measured in millimeters, with common sizes ranging from 2mm to 0.25mm.

The gas used in MIG welding is typically a mixture of argon and carbon dioxide.

• Argon and carbon dioxide are commonly used in MIG welding to shield the weld from contaminants in the air

• The specific ratio of argon to carbon dioxide can vary depending on the type of metal being welded

• Other gases such as helium or oxygen may also be used in certain applications

The metal-to-tip distance refers to the distance between the metal being welded or cut and the tip of the welding or cutting torch.

• The metal-to-tip distance is crucial for achieving the desired weld or cut quality.

• It is typically recommended to maintain a consistent distance for uniform results.

• The distance can vary depending on the type of metal, thickness, and welding/cutting technique being used.

• For example, when MIG welding, the ideal distance is usually around 1/4 inch t...read more

There are typically two gases used in gas welding: oxygen and acetylene.

• Oxygen is used as the oxidizer to support combustion

• Acetylene is used as the fuel for the welding process

• The combination of oxygen and acetylene produces a high-temperature flame for welding and cutting

• Other gases like propane or natural gas can also be used in some cases

Arc welding uses a consumable electrode to create an electric arc, while MIG welding uses a continuous solid wire electrode and shielding gas.

• Arc welding uses a consumable electrode that melts to form the weld, while MIG welding uses a continuous solid wire electrode that is fed through a welding gun.

• Arc welding requires a flux to shield the weld pool from atmospheric contamination, while MIG welding uses a shielding gas to protect the weld.

• Arc welding is more suitable for he...read more

There are various types of welding rods available for different welding processes and materials.

• Types of welding rods include: stick electrodes, TIG rods, MIG wire, flux-cored wire, and submerged arc welding wire

• Each type of welding rod is designed for specific welding processes and materials

• Stick electrodes are commonly used for shielded metal arc welding (SMAW)

• TIG rods are used for Tungsten Inert Gas welding

• MIG wire is used for Metal Inert Gas welding

• Flux-cored wire is used...read more

MIG welding is a type of arc welding process that uses a continuous solid wire electrode.

• MIG stands for Metal Inert Gas welding

• Uses a shielding gas to protect the weld from contamination

• Commonly used for automotive repairs and fabrication work