What is mig and spot welding, welding defects and remadi

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Accepted Answer

MIG and spot welding are common welding techniques used in production. Welding defects can occur and need to be remedied.

MIG welding, also known as Gas Metal Arc Welding (GMAW), uses a consumable wire electrode and shielding gas to join metal pieces together.
Spot welding is a resistance welding process that uses two copper alloy electrodes to apply pressure and heat to join metal sheets.
Common welding defects include porosity, undercutting, lack of fusion, and distortion.
Remedies for welding defects depend on the specific defect but may involve adjusting welding parameters, cleaning the joint, or using different techniques.
For example, if porosity is observed, the remedy may involve using a different shielding gas or cleaning the metal surface before welding.

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