Welding of stainless steel with copper
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The 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 the coefficients of thermal conductivity. To overcome these difficulties, it is necessary to introduce significant thermal power densities into the weld zone. The most accessible of such sources is a plasma, burning electric arc. However, the heat of an ordinary arc is dissipated in the column of the arc, and the remaining heat for welding is not enough. The solution is to further localize the connection zone, for example, fluxes. And in order to exclude the ingress of oxygen into the air through a relatively porous layer of fluxes, an inert gas, carbon dioxide, or, more often, argon, is fed into the treatment zone under pressure.
Welding parameters for stainless steel with copper
- Current, A — 200… 280;
- Voltage on the arc, V — 20… 25;
- The flow rate of argon, l / min — 12… 15.
Supplier Evek GmbH offers to buy welded copper of domestic and foreign production at an affordable price in a wide range. We will ensure the delivery of products to any point of the continent. The price is optimal.
Sequence of welding of copper and stainless steel
Initially, argon is fed into the welded zone, an electric arc is then excited, and a filler wire is introduced. Its composition should include the chemical elements contained in the parts to be welded: copper and nickel, the presence of which improves the melting process.
Argon flow rate
The argon flow is controlled at the maximum level. As a heavier gas, it provides reliable insulation of the weld zone from the environment, thereby excluding the penetration of oxygen into the finished seam. As the pressure increases, the spattering of the metal decreases. The energy intensity of the process is reduced if the welding is performed by a pulsed current source.
Buy. Supplier, price
Are you interested in welding stainless steel with copper? Supplier Evek GmbH offers to buy welded copper at the manufacturer’s price. We will ensure the delivery of products to any point of the continent. The price is optimal. We invite you to partner cooperation.