Welding is a key process that is an important aspect of manufacturing and fabrication. It is probably the most efficient method by which two or more pieces of metal can be joined together to produce a single piece. The welding process produces joints that are permanent and much stronger than any other method of bonding metals.
Welding is a process that has widespread applications across several industrial sectors and production units across the globe. Some industrial applications of welding include:
- Aerospace engineering
- Train and rail carriages
- Automotive industry and auto suppliers
- Electricals and electronics
- Domestic hardware
- Radiators and containers
- Medical instruments and supplies
- Nuclear equipment
- Food and beverage industry
- Other miscellaneous metal processing industries
The automotive industry uses joining technologies such as mechanical joining and resistance welding predominantly for car body assembly. Almost all steel sheet metal components are joined using spot welding and most of the aluminium sheet metal parts are joined using clinching and self-piercing riveting. To fasten weld nuts to sheets, the method of projection welding is used.
Resistance welding and mechanical joining are widely used in the aerospace industry and are used to join parts of special metals that are lightweight and have high strength such as aluminium and titanium alloys and materials with high-temperature resistance such as nickel alloys.
The most common joining technique used in the assembly of the fuselage and wings of airplanes is riveting, while the interior parts of the airplane are assembled using spot welding.
Electronics and Electrical Industry
Parts of various materials and shapes are joined together in the electronics and electrical industry by making use of resistance welding like printing circuits, electrical connectors, rotors, etc. These components are usually good conductors and are difficult to weld. The specialised characteristic feature of resistance welding in the electronic and electrical industry is the use of exotic materials and miniature sizes of the components that are quite difficult to weld.
All huge construction industries use welding processes extensively and these welding processes are the foundation that ensures sustainable, strong and sturdy connections within these large-sized bridges, buildings and other structures.
Since the Industrial Age, welding has been a key process that has been an integral part of conventional shipbuilding. In the case of building a ship, ensuring that the surface is water-tight is critical and within the ship, welding processes are used to join the control panels, fluid lines, secure hatches and several other parts that are vital to ensuring that the vessel is safe, secure and seaworthy.
Rugged applications involving thick metal dimensions use arc stud welding that provides the effectiveness and control required to join heavy metal pieces together very firmly. Metal furniture construction uses welding processes in making furniture such as file cabinets, shelving units, office desks, etc. The HVAC industry also makes use of welding to construct heating, ventilation and air conditioning equipment.
Farm equipment and machinery are welded throughout their processes and frames. The chassis, fenders, brackets and cab frames are all formed by welds.
In the case of lawn and garden equipment such as power saws, lawn mowers, trimmers, etc. their strength and durability are due to their strong welded frames. Other metal structures such as enclosures, watering systems, barbecue grills, etc. are all joined using the process of welding.
Safe and secure roads depend on welding processes – sewers and other utility systems passing under the road, manhole covers, etc. are all constructed using welding processes.
Most of the industries depend on accurately and efficiently functioning equipment and the welding process is crucial for these machines and equipment to work properly.
When you look around you, virtually every single appliance you use is manufactured using a welding process at least in some part. Thus, we can conclude that the welding process is an integral part of our lives and industries. The constant innovation in welding will only help industries reach higher levels of efficiency and better our lives.