How much powder coat do i need

Transfer efficiency is directly related to the way the operator is applying the powder. If there is a giant cloud of powder in the booth or a heavy fog of powder blasting out of the gun, you can bet that there is more wasted powder than if the operator is spraying lightly enough to coat the face of the part and still get a gentle wrap of powder moving around the part to partially coat the other side. Proper ground and powder coating gun quality can have a significant effect on transfer efficiency.

Likewise, a shop using a professional quality electrostatic gun with adjustments for powder flow, voltage and current can get better results than one using a hobby gun. One way to calculate transfer efficiency percentage is to determine how much powder is applied to a part in the time necessary to fully coat that part. You will need a high quality digital scale and a timer to do this.

First, weigh your part before you spray it. Get your timer ready and spray the part until it is fully coated and ready to cure.

Record the time it took to coat. Now, weigh the part again to learn how much powder was deposited. Imagine it was a box instead of a cylinder. Using this approach would yield a total of six flat sides that we can then calculate to ballpark the overall square footage.

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We noticed you have Javascript disabled. X Order Today: Home Coverage Calculator. Powder Coating Coverage Calculator Use this tool to help estimate your powder coverage, potential costs, and lbs needed. Calculator Input Advanced calculator. Length in Inches Width in Inches. Thank you -- Prismatic Tech Support. Transfer Efficiency: - Transfer Efficiency is the ratio of the powder coating actually deposited on the substrate as compared to the amount directed at the parts to be coated.

Transfer efficiency is a really good measure of how well your guns are operating and how much a powder transfers, charges and is stuck to a part. It can be determined by measuring gun output at given conditions feed voltage and current, Air pressure. The ratio of mixing of reclame powder and fresh powder depends on the application. Whether you calculate paint coating transfer efficiency by the weight method or the volume method, the variance in the figures gives you an idea of how efficient or inefficient your coating process reality.

Determining it can be accomplished with a clean booth end of the spray gun and triggering it for 30 seconds. Weight of the net contents of powder and you can calculate approximate the rate of powder delivery per minute. To determine deposition, weight a part before coating and after it is coated.

Then divide the amount deposited by the amount of powder estimated to exit the gun. Fixed costs are the building, debt, administration, etc. This type of formula can be set up in a spread sheet for quoting purposes. When the process data is filled in, the spread sheet does the work for you. Infrared cure is gaining increased attention from coaters as a result of shorter cure cycles and the possibility of smaller floor space requirements when compared to convection oven curing.

For more than 50 years, fluidized beds have been used to coat parts with powder coatings. In this article, two industry experts tackle some common questions about the fluidized bed process…. This alternative to TGIC-based polyester powder coatings offers similar performance and enhanced transfer efficiencies. Powder Coating. How to calculate the cost of powder coating.

Rodger Talbert Columnist, Products Finishing magazine.