Resistance Seam Welding

Resistance seam welding involves joining metals by applying pressure and passing a current through the area of the metal to be joined for an extended period of time. The main advantage of resistance welding is that no other materials are needed to form the joint, which makes the process extremely cost-effective. There are several different forms of resistance seam welding, for example, spot welding, spot welding, projection welding, projection welding, and upsetting welding, which differ mainly in the type and shape of the welding electrodes which are used to apply pressure and conduct electricity. The electrodes, usually fabricated from copper-based alloys for their excellent conductivity properties, are cooled by water flowing through the cavities inside the electrode and other conductive resistance seam welder tooling.

Resistance Seam Welding Applications

A very common application of resistance seam welding is the assembly of fuel tanks because they need to be liquid-tight. It is also often used to weld sections of ships that need to be watertight or airtight. Other types of welding can also produce watertight and airtight seals, but do not generally ensure the welds are clean. As for the welding of the seam. Another typical application is the welding of pipes and tubes. In specific, welding resistance is used in this area since no molten metals are used in the process. There are also no welding seams that will damage the aesthetics of pipes or tubing. This resistance seam welding technology makes it possible to achieve smooth ties that are difficult to feel on the surface to be connected.

A resistance seam welder is used where long manufacturing runs and steady conditions can be sustained. Welding is done by operators who usually load and unload the welder and use the switch to start the welding process. The car industry is a significant user of resistance welding processes, followed by the home appliance industry. Resistance seam welding is used in many industries to manufacture a variety of thinner metal items. This method of resistance welding is often used in the steel industry for the manufacture of rods, cylinders, and smaller structural profiles. It has the advantage of delivering a significant volume of work at high speeds and having no filler material. Welds are repeatable and high-quality welds are common.


Pros and Cons of Resistance Seam Welding

Pros

Resistance welding has a particular range of benefits, making it very beneficial in a variety of industries. One of the most important features of continuous welding is that it can form airtight and watertight seals. This is particularly critical when designing metal systems that require protection against air or water leakage, such as air or liquid reservoirs. Resistance seam welding is also possible at high speeds. And since the whole procedure is automated, welding resistance is quicker than for other alternatives such as spot welding. Third, welding is possible without extra filler material or flux.


Cons

The method of resistance seam welding also has some drawbacks. Any shortcomings or drawbacks of welding resistance are described below. As the seam welding system consists of rollers, only linear or uniformly curved seams are feasible. Finally, the thickness of the sheets is reduced as the seam welding may become very cumbersome as the single sheet thickness is more than 3 mm.


Differences between Resistance Seam Welding and Spot Welding

Resistance seam welding is a continuous weld around the joint. When the joint is forged by heat and strain, the welding of the groove creates a very solid weld. Fillet welding and butt welding are two different forms of seam welding. Fillet welding is a triangular weld that connects two surfaces at right angles to each other, and the butt welding is typically made of alternating, T-shaped, or corner welding. Unlike a spot weld that uses a single point electrode, a resistance seam weld uses a revolving electrode that creates a resistance weld. This method is most widely used to fuse two sheets of aluminum. MIG and TIG welders are ideal for seam welding. If you want to reach a wider area with a stronger joint, try using a joint. This method can be used to fuse two sheets of metal and is suitable if you need a continuous, sealed connection.

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