How to Calculate Rate of Deposition

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Welders can use the rate of deposition to estimate costs.
Welders can use the rate of deposition to estimate costs. (Image: Jupiterimages/Photos.com/Getty Images)

Metal inert gas welding is a form of welding in which a wire electrode is continually fed through the welder. The deposition rate is the amount of wire that passes through the welder, expressed in pounds per hour. The deposition rate is useful for welding contractors to know, as it allows them to calculate how much wire they will use so they can budget accordingly. The deposition rate is calculated using the diameter of the wire, the wire feed speed and the wire efficiency.

Multiply the diameter of the wire in inches.

Multiply this number by the wire feed speed, expressed in inches per minute. This will be specified by the welder manufacturer.

Multiply the resulting number by the efficiency. The efficiency of solid wire is 1.0, while the efficiency of cored wire is 0.85.

Multiply the new product by the constant of 13.1. This will give you the rate of deposition, expressed in pounds per hour.

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