Generally (but not always) pronouns stand for (pro + noun) or refer to a noun, an individual or individuals or thing or things (the pronoun's antecedent) whose identity is made clear earlier in the text. For instance, we are bewildered by writers who claim something like. They say that eating beef is bad for you.
A wire feeder may be used for machine or automatic welding and must be the constant speed type. The wire feeder must have a speed adjustment covering the range of from 10 in. per minute (254 mm per minute) to 125 in. per minute (3.18 m per minute) feed speed. PAW or plasma arc welding using an automated process.
â¢The electric current travels through the air gap between the end of the electrode wire and the base metal.Principles of SMAW â¢SMAW is the most common form of welding. â¢An arc welding machine supplies electric current to an electrode wire. an electric arc is formed. â¢As the electric current flows through this air gap. . â¢As the flux covering on the electrode wire melts. a shielding gas is created. and weld from the atmosphere during the welding process.