Steel Welding is method of joining materials by using intensive heat to melt the parts together and allowing them to fuse.
steel fabrication - beam manufacturing

1. What is Welding?

Metal welding is a method of connecting two separate metal objects (same or different metals) by bonding through appropriate ways. Although methods will vary, from the thinnest plate to the thickest plate, majority of the metals can be welded by one or more welding methods. The material characteristics (such as melting point, ductility, electrical conductivity, yield strength, and plasticity, etc.) determines the difficulty of welding and appropriate welding method. There are various welding tests to identify welding defects.

2. The types of welding
  • MIG Welding

MIG welding is generally used for thick materials. It uses a consumable wire that acts as both the electrode and the filler material. Compared to TIG welding, it is much faster, resulting in shorter lead times and lower production costs. MIG welding provides high quality welds, and it’s very common for most sheet metals, such as mild steel, aluminium and stainless steel.

  • TIG Welding

TIG Welding uses a non-consumable tungsten electrode that delivers the current to the welding arc. The tungsten and weld puddle are protected and cooled with an argon gas.

TIG welding is most commonly used for welding non-ferrous metals like aluminium, titanium, chromium, etc.

  • Stick Welding

Stick welding is the most frequently used welding method among arc welding procedures. To join metals, it uses an electric current and an anode at the weld pool. Its simplicity and versatility makes it one of the most popular.

The electric current creates an electric arc between the work pieces and the electrode. This spot is known as the weld pool.

Stick welding is mainly used in welding mild steel and is widely used in the repair and maintenance works.

  • Gas Welding

Gas welding is one of the conventional forms of welding by heat. The heat generated from burning the fuel, oxygen is used to join work pieces by melting them. Gas welding has a broad scope of application and it can be used for both ferrous and non-ferrous metals. Gas welding is very effective for pipe welding and maintenance works of ventilation and air conditioning systems.

3. Types of welding joints.
  • Butt Joint

A butt joint refers to two metal pieces located side by side for welding. A preliminary edge preparation is essential for a high quality welding outcome. The butt weld is relatively easier than the other joints and it withstands stress better than the others. It is the most common welding joint in fabricating structures.

  • Lap Joint

Lap joint refers to a joint when one part laps onto the other one. The welding between the two parts is done by a fillet weld. The major shortcoming of the lap joint is that some area below the weld pool is prone to rust.

  • Edge Joint

The edge welding joint is used to join parts that are parallel to each other. Edge joints are often used for sheet metal welding since they allow for a cleaner, smoother weld surface than a butt joint.

  • Tee Joint

Tee welding joints are created when two metal parts intersect at a 90° angle. This results in the edges getting together in the centre of a component in a ‘T’ shape. Tee joints are also a type of fillet weld.

  • Corner Joint

Corner joints are very similar to Tee joints. The main difference is the location of where the metal is positioned. In Tee joint, one metal is positioned in the center of the other, whereas in corner joints work pieces meet in the corner forming an ‘L’ shape.

4. What is Novelty Steel offering?

Novelty Steel is an experienced welding fabricator with certified welders and strict welding quality control.

With vast CNC Machinery Park and experienced engineering team, Novelty Steel performs high quality welding works according to the EN 1090-2 European Norms.

Recommended Pages

  • Novelty Steel performs Welding Tests such as Visual Inspection, Dye Penetrant Testing, Magnetic Particle Inspection [...]

  • Common Weld Defects can be defined as the irregularities emerge in the welded work piece [...]

  • A welding quality control system starts with clearly defined and quality standards. These standards [...]

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