Welding Copper

Copper and copper-base alloys have specific properties which make them widely used. Their high electrical conductivity enables their use in the electrical industries, and the corrosion resistance of certain alloys makes them very useful in the process industries. Copper alloys are also widely used for friction or bearing applications. Copper can be welded satisfactorily with either … Read more

Solid Electrode Wires

a. Bare or solid wire electrodes are made of wire compositions required for specific applications and have no coatings other than those required in wire drawing. These wire drawing coatings have a slight stabilizing effect on the arc but are otherwise of no consequence. Bare electrodes are used for welding manganese steels and for other purposes … Read more

Welding Brass And Bronze

Welding brass and bronze can be accomplished using a number of welding processes. Brass and bronze are alloys of copper. Brass has zinc, and bronze has tin as the major alloying element. However, some bronze metals contain more zinc than tin, and some contain zinc and no tin at all. High brasses contain from 20 to … Read more

Non-Consumable Electrodes and Other Filler Metals

There are other filler metals and special items normally used in making welds. These include the non-consumable electrodes (tungsten and carbon), and other materials, including backing tapes, backing devices, flux additives, solders, and brazing alloys. Another type of material consumed in making a weld is the consumable rings used for root pass welding of pipe. There are … Read more

High Carbon Steels

High carbon steels include those with a carbon content exceeding 0.55 percent. The unfinished surface of high carbon steel is dark gray and similar to other steels. High carbon steels usually produce a very fine-grained fracture, whiter than low carbon steels. Tool steel is harder and more brittle than plate steel or other low-carbon material. High … Read more

Arc Welding Electrode Classification System

The SMAW electrode classification code contains an E and three numbers, followed by a dash and either “15” or “16” (EXXX15). The E designates that the material is an electrode and the three digits indicate composition. Sometimes there are letters following the three digits; these letters indicate a modification of the standard composition. The “15” or “16” … Read more