Stainless steel welding methods
Technical Characteristics
Stainless steel welding can be done by manual arc welding, welding with fusible and non-fusible electrode, pulsed arc welding, plasma and some other types of welding, which are not so widely known. Recently, one of the new methods of stainless steel welding has become widespread - laser high-frequency welding, which has opened new, broadest prospects in this direction. Supplier offers to buy high quality products, corresponding to GOST and international standards. The price is optimal. Buy today. Buy in bulk and in installments.
Manual arc welding.
It is usually used to join stainless steel parts, the thickness of which exceeds one and a half millimeters. The highest performance, in comparison with other welding has a fusion arc welding in an inert gas. As a rule, it is used for joining thin stainless steel sheets less than one and a half millimeters thick.
Other types of arc welding
Pulsed arc - performed with a fusing electrode in inert gas. It is most effective for stainless steel of 0.8 mm thickness. Arc welding with metal jet transfer is used if stainless steel sheet thickness is 0.8-3 mm, and plasma welding is used for stainless steel sheet thickness exceeding 3 mm. If there is a need to weld stainless steel with a thickness of more than ten millimeters, submerged arc welding is resorted to.
Choice of method
Stainless steel welding methods take into account the grade of the steel. Some secondary considerations are also taken into account, such as the resistance of the metal to cracking. If the stainless steel product to be welded is expected to be used in corrosive environments, it must have sufficient resistance to corrosion. In this case, the methods of heat treatment are also chosen particularly carefully.
Final Treatment
A loose oxide layer is formed on the surface of the weld, which weakens the corrosion resistance of the welded joint. It is obligatory to remove this layer and the weld is thoroughly grinded. Etching is the most common method of treatment. Properly performed, this procedure restores the corrosion resistance of stainless steel by completely removing the oxide layer. The corrosion resistance can be further improved if the weld is sanded or polished after pickling the metal.
Furnizor
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