Automobile manufacturers use a plethora of welding techniques in car welding. Common among which are resistance spot welding, resistance seam welding, metal inert gas welding, tungsten inert gas welding, laser beam welding, friction welding, and plasma arc welding. That’s quite a handful.
Factories build cars, in assembly lines or production lines. Upholding a product line is the tenet of the division of labor. Take, for example, a shoemaker. He does not make the shoe entirely, so there are various sections-designing, shoe lasts, stamping, assembling, and finally the shoe room for quality control. Besides, different personnel oversees each of these individual operations, arriving at the final product.
Building lines are similar. These are engine assembly, hood assembly, wheel assembly, with sub-assembly lines. Each worker contributes to the one task allotted him.
Car Welding Expertise
Let us read more about various car welding skills.
Resistance Spot Welding
The body of an average car has 4600 spot joints, but the principal method of joining for many years in the Automotive industry has been car welding using RSW. The joint is a product of heat from the resistance and opposing pressure to the joint pieces and the current flowing. Because the weld is discontinuous, it is limited to spots on the overlapped workpieces. The process is automated and is therefore carried out by industrial robots putting together the car body in an assembly line
Resistance Seam Welding
Deployment of another type of resistance welding is seen here, resistance seam welding (RSEW). Here, the joint fabrication is progressively along the full length. Therefore this continuous and leak-tight joint finds use in leak-proof fuel tanks.
Generally, the consideration is that friction welding a variation of solid-state welding. The heat for welding of the parts emerges from the mechanical sliding motion or friction. In addition, the weld parts are under restraining by pressure because three regulatory factors control the process; time, rotational speed and pressure. A wide gamut of engine parts such as half shafts, axle cases, steering columns, hydraulic cylinders, piston rods, and engine valves, etc. are forged from friction welds.
Magnetic Pulse Welding
A special mention is due here to this new innovative weld method. The demand of the day is for lighter vehicles, hence more cost-effective. Lighter components make the for more fuel-efficient and so it is the need of the hour considering fuel-cell-powered cars and hybrid vehicles. MPW is a novel technique bonding aluminum and steel sections without additional weight at the joints using a technique called hydro-forming, a very precise fitting of structural components
Where The Future Leads For Car Welding
To begin with, the growing needs of lighter and fuel-efficient cars have already been touched on. Automotive manufacturers vouch for this and also agree that new efficient welding methods that can produce lighter joints without added mass are the order of the day. The implementation of PMG on a commercial case has become imperative. To summarize, new evolvements in laser beam and medium frequency welding show great promise because of new material combinations, in main powder metallurgy methods.