The Art and Science of Welding: A Beginner’s Guide

The Art and Science of Welding: A Beginner’s Guide

Welding is the art and practice of permanently bonding two or more metal pieces together to create a new metal object or structure. It requires the proper equipment to heat the metal surfaces to their melting points, so they can mix together in liquid form and then harden together.

Various welding techniques are available to create metal-fabricated structures and objects. The choice depends on the size and shape of the desired metal structure, the welder’s level of skill, and the types of metals to be used for the weld.

Examples of commonly welded metals include stainless steel, titanium, aluminium, copper, nickel, carbon steel, cast iron, and magnesium alloy. Each metal has a different melting point, which is why technique and skill matter for welding certain types of metals. Beginners should practice welding aluminium because it has higher thermal conductivity and a lower melting point.

 

The three main welding types are MIG, TIG, and Stick. Let’s briefly review them below:

MIG Welding

MIG (metal inert gas) welding is a perfect welding method for beginners. It involves a welding gun with an electrode that creates an electric arc to heat metals until they melt and join together. Then gas is diffused and spreads around the welded area to protect it from airborne contaminants.

 

TIG Welding

TIG (tungsten inert gas) welding is a more advanced form of welding. The welder must have experience, skill, and patience to do it effectively. Rather than using a consumable wire, it uses a tungsten metal rod to melt the metal. One hand holds the gun, and the other feeds the filler rod. Two metal puddles and the filler rod all melt and mix together.

 

Stick Welding

Stick welding (shielded metal arc welding) is a two-handed welding method involving a metal filler stick rod with a flux coating. It is similar to the TIG welding method but consists of melting the stick rod and flux coat to produce a gas to protect the welded area from contaminants.

Leave a Reply

Your email address will not be published. Required fields are marked *