Copper Sheet For Welding

For welding copper nickel to steel nickel copper consumables containing about 65 ni are used as the weld metal can absorb more iron dilution from the steel without cracking than copper nickel weld metals.

Copper sheet for welding.

Many weld consumable manufacturers offer cu ni and nickel copper electrodes and filler wires to recognised specifications table 11. Ercu typically contains 0 4 of si and mn with 0 8 of sn to aid fluidity. Tig welding is an option if you re the risk taking type. It depends on your plan or your manufacturer s plan.

Tig welding copper photo courtesy metal works fabrication is copper easy to weld. For welding sheet and plate from one side grooved copper or cu ni backing bars are preferred. Currents on the high side of the range are favored for the higher conductivity lower nickel content alloys. Ercusi a contains 1 mn and 3 si and is the preferred filler metal for tough pitch and p deoxidised.

It is often necessary to raise the temperature level of the sheet in an area of 6 0 to 12 0 in. The two filler metals most often selected to weld the pure copper alloys are aws a5 7 ercu the c7 of the now superceded bs 2901 part 3 and ercusi a the old c9 of bs 2901. In welding copper sheets the heat is conducted away from the welding zone so rapidly that it is difficult to bring the temperature up to the fusion point. Representative parameters used in joining cu ni alloys by gmaw spray arc are shown in table 3.

Alloys can leach metals into the liquid that aren t good for drinking. 152 4 to 304 8 mm away from the weld. Oxygen free copper will allow copper to retain the original bronze color after welding by preventing oxidation. Due to its high conductivity the base material copper acts as a heat sink so the welds need to be hot and fast.

If you are welding copper for handling potable water or stronger drinks use pure copper not alloys. This alloy generally has less than 0 02 oxygen.