The four important parameters are welding current, voltage, speed of arc travel and wire electrode extension.
Welding current is the measurement of power being used in the welding process for which a power source meter or a separate ammeter can be used. Wire extension is also called as stick out. It is the distance between the electrical contact and the wire electrode. Voltage directly controls the arc length. Also a certain range is required to maintain arc stability at any given welding current level. Arc travel speed is the linear rate that the arc moves along the work piece. It is usually expressed in inches or meters per minute. Two important steps to be remembered in arc travel speed are: firstly, if material thickness increases, arc travel speed should be reduced. Secondly, welding speed can be increased by using forehand welding technique.
Welding operator should have enough ventilation in the room while welding or cutting since it has fumes and gases. Do not touch live electrical parts. Use correct cable size and make sure that all electrical connections are tight, clean and dry. Avoid open-circuit voltage. Always keep cables and connectors in good condition. Always wear insulated gloves when adjusting equipment. Arc rays and spatter can injure eyes and burn skin. Wear correct eye, ear and body protection. Always wear gloves and a helmet to protect you from burns. Always wear protective clothing, snug fitting shoes, cuff less pants, clean clothes, ear protection, leather cap so that you can protect yourself from welding.
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