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Difficulties of welding copper with stainless steel

The main problem of the strength of the welded joint formed by these metals is a big difference in thermal conductivity coefficients. To overcome these difficulties, it is necessary to introduce considerable densities of thermal power into the welding area. The most accessible of these sources is the plasma of a burning electric arc. However, the heat of a conventional arc is dissipated in the arc column, and the remaining heat for welding is not enough. The way out is to additionally localize the joining area, e.g. with fluxes. In order to prevent air oxygen from getting inside through the relatively porous flux layer, an inert gas - carbon dioxide, or - more often - argon - is fed additionally into the processing zone under pressure.

Welding parameters of stainless steel with copper

• Current, А - 200 ... 280;
• Arc voltage, V - 20...25;
• Argon flow rate, l/min - 12...15.

The supplier Evek GmbH offers to buy welded copper of domestic and foreign production at moderate price in wide assortment. Provide product delivery anywhere in the continent. The price is optimal.

Sequence of welding copper and stainless steel

First, in the area of weld formation argon is fed, then the arc is excited, and the filler wire is introduced. It should contain chemical elements contained in the welded parts: copper and nickel, the presence of which improves the melting process.

Argon consumption

Argon consumption is controlled at the maximum level. As a heavier gas in density, it provides reliable insulation of weld zone from environment, excluding thereby oxygen penetration into the ready seam. With increasing pressure, spattering of metal decreases. Power-consumption of the process is reduced if welding is carried out by a pulsed current source.

Buy. Supplier, price.

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