Arc welding is one of the most popular and versatile welding techniques used in various industries to join metals. It works by creating an electric arc between an electrode and the metal workpiece. This arc generates intense heat, which melts the metal at the point of contact, forming a strong bond when cooled. Whether you’re working on construction, repairs, or manufacturing, arc welding plays a vital role in creating durable metal structures.

How Does Arc Welding Work?

The process begins with an electric current flowing between the electrode and the workpiece. The electrode can be either consumable (melts to form the weld) or non-consumable (does not melt and requires a separate filler material). The heat generated can reach temperatures of up to 6,500°F, melting the metals to create a solid joint once they cool.

Depending on the method used, additional shielding gases or coatings are often applied to protect the weld from contaminants like oxygen or nitrogen in the air. These contaminants can weaken the weld and reduce its durability.

Types of Arc Welding

Arc welding encompasses several techniques, each with its own unique applications. Below are three common methods used in projects:

1. Shielded Metal Arc Welding (SMAW)

Also known as stick welding, SMAW is one of the simplest and most commonly used forms of arc welding. It uses a consumable electrode coated with flux to protect the weld area. When the electrode melts, the flux creates a shield, preventing contamination.

SMAW is ideal for heavy-duty applications like construction and pipeline work, as it can be performed in various environments and does not require a shielding gas.

2. Gas Metal Arc Welding (GMAW)

Also referred to as MIG (Metal Inert Gas) welding, this method uses a continuous wire electrode fed through a welding gun. A shielding gas, such as argon or a mix of gases, is released from the gun to protect the weld from contamination.

GMAW is known for its speed and efficiency, making it perfect for large-scale projects and industries like automotive manufacturing and fabrication.

3. Tungsten Inert Gas Welding (TIG)

TIG welding is a precise method that uses a non-consumable tungsten electrode to create the weld. A shielding gas, typically argon, is used to protect the weld area. TIG welding requires a high level of skill but produces clean, high-quality welds.

This technique is often used for thin materials, such as aluminum or stainless steel, where accuracy and aesthetics are important.

Why Choose Arc Welding for Your Next Project?

Arc welding offers many advantages, including:

  • Versatility: It works on a wide range of materials, including steel, aluminum, and alloys.
  • Durability: The welds produced are strong and can withstand significant stress.
  • Cost-Effective: Arc welding equipment is relatively affordable and efficient to use.

Need Expert Welding Services in Vancouver?

Whether you have a repair project, a fabrication requirement, or need on-site welding, Vancouver Welding Inc. is here to help. We proudly offer welding services across Metro Vancouver and have a local welding shop in Maple Ridge for all your needs.