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Methods of welding stainless steel

Methods of welding stainless steel

Are you interested in the methods of welding stainless steels from the supplier AvecGlob? Here you will find the necessary information on this topic.

TIG — Tungsten Non-consumable Electrode Welding

This is the most widely used process due to its versatility and high quality, as well as the highly aesthetic appearance of the finished seam. The ability to weld with low current and therefore low heat output, as well as the possibility of adding filler if necessary, make it ideal for thin materials and also for single-sided welding of thicker plates and pipes. The process is easily mechanized, and the possibility of welding with or without the addition of filler (autogenous welding) makes it a process for orbital pipe welding. Pure argon is the most popular protective gas, but argon-rich mixtures with the addition of hydrogen, helium or nitrogen are also used for specific purposes. To protect against oxidation and loss of corrosion resistance, one-sided welding of the protective seam under the side with an inert protective gas is used.

Plasma arc welding

A derivative of the TIG process using a constructed nozzle system to produce a narrow, concentrated, portable plasma arc with deep penetration characteristics. It is mainly used in mechanized systems where high-speed high-performance welding of butt-end joints up to 8 mm thick is required.

Thicknesses exceeding 10 mm use a partial weld with pre-weld, followed by a multi-pass connection. Protection of argon shielding gas is necessary to maintain the corrosion resistance of the lower edge.

Shielded arc welding (MMA method)

In manual mode and in the oldest arc process, MMA electrodes are widely used because of their flexibility when placing a wide range of materials to be welded. Electrode coating types are provided to provide performance characteristics that make them suitable for various welding applications. The most widely used electrodes with acidic rutile coating produce a metal transfer with a spray arc, a self-releasing slag and a finely ground aesthetic profile of the weld. In general, the electrodes are used in the «down» position in the production of butt welds.

Primary electrodes produce weld metals with a high degree of integrity, using slags, and are extremely useful for welded joints with a fixed tube.

Supplier — AvekGlob Company — offers to purchase assortment of welded constructions made of different grades of stainless steels. Products can be bought at a price formed on the basis of European and world standards. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.

Gas arc welding (MIG / MAG method)

This is a semi-automatic welding process that includes a continuous consumable carbide electrode and argon rich protective gas. It is used to achieve high performance characteristics when welding a thin material using a short-circuit transfer mode, or a «spray arc» for thicker materials. Power supplies that generate a pulsed current are designed to provide improved weld metal quality in positional welding and a cleaner welded joint. Gas mixtures are used with the addition of oxygen, helium, carbon dioxide, etc., in order to improve arc stability and wetting characteristics of the welding ball.

Powder arc welding

A variant of the MIG / MAG process, which uses a tubular wire filled with flux or metal powder. Two wire versions are produced: to provide all positional possibilities and for higher applications for manual feed. Higher deposition rates and surfacing are possible than with MMA or MIG / MAG and a significant reduction in post-welding transitions.

Submerged arc welding

Fully mechanized wire and powder shielded arc process, capable of high deposition rate, and improved weld quality. Applications include the production of continuous welds in thicker plates, pipes and vessels, especially when long seams are involved. An electroslag process using a tape electrode is also available for use.

Electric resistance welding

Point and seam resistance welding is usually limited to the serial welding of a thinner material, where the type of overlap weld and the resulting gap clearance will not reduce the corrosion resistance expected during maintenance.

Laser welding

The energy concentration achieved in the focused spot of the laser beam is very intense, and is capable of producing deep penetrating welds in a thick section of stainless steel, with minimal distortion of the components. In this process, equipment with high capital costs is used, and its use is justified only for mass production.

Supplier — AvekGlob Company — offers different types of rolled and welded constructions of stainless steel of domestic and foreign production. The products are offered at affordable prices from the manufacturer. The supplier guarantees the timely delivery of products to any address specified by the consumer.