Welding of aluminum with copper
Are you interested in welding aluminum with copper? Supplier Evek GmbH offers to buy welded copper 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.
Difficulties in welding copper with aluminum
With the help of conventional fusion welding, it is very difficult to make a permanent connection between the copper and aluminum parts. This is due to the fact that, due to the large difference in melting temperatures, it is impossible to verify the true chemical composition of the melt. In terms of strength in the intermetallic compound formed, an important percentage of copper is important: if it exceeds 12%, the melt becomes fluid, with a corresponding decrease in mechanical strength. At the same time, the brittleness increases, and the weld metal tends to become corrosive cracking. Thus, it is inefficient to use traditional carbon electrodes for welding copper and aluminum.
Method of locking connection
To overcome these difficulties, the locking method is used, the essence of which is that on top of the aluminum sheet is placed a copper patch, which is scorched from all sides, and then perform surfacing of welded seams. 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.
Copper and aluminum welding modes
In electric arc welding, direct current is used, and the process itself is conducted on a straight polarity. The use of a filler wire made of aluminum alloys is mandatory. Parameters of the process when welding products with a thickness of up to 15… 20 mm are as follows:
- Current strength, A — 500… 550;
- Voltage on the arc, V — 50… 60;
- Length of the arc, mm — 25… 30;
- Diameter of filler wire, mm — 10… 12.
When contact welding of copper and aluminum (used to weld copper tips to aluminum tires), the pulse welding method has proven itself. The connection occurs due to the discharge of the capacitor bank, during which the connection of these metals is carried out by the method of precipitation. Depending on the thickness of the products, the technological process regimes are selected within the following limits:
- Battery capacity, mF — 250… 1000;
- Voltage, V — 1100… 1500;
- Force of the subsequent reduction, Н — 1200… 1500.
Buy. Supplier, price
Are you interested in welding aluminum 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.