The coating business is all about meeting customer specifications and consistently delivering quality parts on time. Part of the process is testing to ensure that every part that comes off the line meets quality standards.

Every product gets extensive testing to make sure that it meets customer requirements. The most common test is the salt spray test. In this test, coating samples are collected on 3" x 9" plates. The plates are run through the coating line at the same time as customer parts. This ensures that the test plates are coated in the same manner as the parts.

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Once the plates come off the line they are logged in and prepared for testing. This preparation includes cross-hatching. By cross-hatching some of the plates prior to testing, we can determine how the part will perform if it is damaged in the field. We do this by measuring the spread of corrosion around the cross-hatched area.

The plates (with and without cross-hatching) are put in the salt spray test chamber where a concentrated salt fog is generated. This process simulates the conditions a part may be exposed to while in use, though at a severely accelerated rate. Since few things corrode like salt, the salt spray test is the industry standard. The ratings are based on the hours the plate can last in the chamber without any signs of corrosion.

Depending on the metals coated and the process used, our team of engineers, technicians and quality control experts will work with you to establish a coating system that will meet your requirements for salt spray test hours. We rigorously test parts at regular intervals to ensure that the proper coatings are being applied over the days, weeks or months that your parts are running. It is this commitment to quality and testing that has earned H.E. Orr its solid reputation in the industry.


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