Welding Amperage & Heat Relationship

The amount of heat produced by the arc is determined by the amperage. The higher the amperage setting the higher the heat produced by the welding arc, and the lower the amperage setting the lower the heat produced. Each diameter of the electrode has a recommended minimum and maximum amperage range and therefore a recommended heat range. If you were to try to put too many amps through a small diameter electrode it will overheat and could even melt during weld and potential of the welder injury. If the amperage setting is too low for an electrode diameter, the end … Continue reading Welding Amperage & Heat Relationship

Welding Term, Definition, and Abbreviations

Find your confusing words by Ctrl+F Active Fluxes – Active fluxes produce changes in weld metal chemistry when welding is changed. Active fluxes are restricted to single or minimal multi-pass welding. Acceptable Weld – A weld that meets the applicable requirements Actual Throat – The shortest distance between the weld root and the face of a fillet weld. Aging – Process of holding metals or alloys at room temperature after subjecting them to shaping or heat treatment, for the purpose of increasing dimensional stability or to improve their hardness and strength through structural changes, as by precipitation. Air Carbon Arc Cutting – A carbon arc cutting process variation that removes molten metal … Continue reading Welding Term, Definition, and Abbreviations

What is Welding Current?

Welding current is the term used to describe the electricity that jumps across the arc gap between the end of the electrode and the metal being welded. An electric current is the flow of electrons. The resistance to the flow of electrons (electricity) produces heat. The greater the electrical resistance, the greater the heat and temperature that the arc will produce. Air has a high resistance to current flow, so there is a lot of heat and temperature produced by the SMA welding arc. Electrons flow from negative (–) to positive (+). What three units are used to describe any … Continue reading What is Welding Current?

What are the advantages of SMA welding?

SMA: Shield Metal Arc Welding (SMAW) SMAW is the most widely used welding process for metal fabrication because of its low cost, flexibility, portability, and versatility. The welding machine itself can be as simple as a 110-volt, step-down transformer that can be plugged into a normal electrical outlet. The electrodes are available from a large number of manufacturers in packages ranging from 1 lb (0.5 kg) to 50 lb (22 kg). The SMAW process is very versatile because the same SMA welding machine can be used to make a wide variety of weld joint designs in a wide variety of metal … Continue reading What are the advantages of SMA welding?