![]() Conventional chambers with water jackets cannot cycle rapidly because of the thermal mass of the water, nor can they produce low humidity. An additional air heater allows very low humidity dry-off exposures. Q-FOG testers can change temperatures exceptionally fast because of their unique internal chamber heater and their high volume cooling/dry-off blower. The reservoir has an integral salt filter and a built-in alarm to alert the operator when the solution is low. The integrated reservoir can optionally be connected to an external tank. The 120 liter reservoir has enough capacity for running most tests for 7 days or more. Space utilization is maximized and maintenance is minimized with the Q-FOG tester's internal solution reservoir. A variable speed peristaltic pump controls the amount of corrosive solution delivered to the spray atomizer, while the air pressure regulator controls the distance of the “throw.” Note that purified water is required for proper operation of Q-FOG corrosion testers. The Q-FOG cyclic corrosion chamber has superior fog dispersion compared to conventional systems, which cannot vary volume and distance independently. variability in results from excessive specimen handling.manual moving of test specimens from one chamber to another. ![]() Q-FOG model CCT advantages include the elimination of: The multi-functional Q-FOG CCT corrosion tester is designed to perform these cyclic tests automatically in a single chamber. Additionally, the CCT model is able to run Copper-Accelerated Acetic-Acid Salt Spray (CASS) tests such as ASTM B368 or ISO 9227 CASS. These test methods were originally developed as labor intensive manual procedures. The Q-FOG model CCT has all the advantages of the model SSP, but adds the flexibility of including 100% humidity.Īutomotive corrosion test methods typically call for exposing specimens to a repetitive cycle of salt spray, high humidity, low humidity dry-off, and ambient conditions. Model CCT for Corrosion Research and Cyclic Automotive Tests They require heated, humidified air for the spray. They are typically run at an elevated temperature and do not incorporate a dry-off cycle. These tests are widely used for relative corrosion testing. Most of these tests are performed to particular specifications such as ASTM B117 (Salt Spray), and BS 3900 F4. Applications include plated and painted finishes, aerospace and military components, and electrical/electronic systems. Many researchers have found this test useful for industrial maintenance coatings.Ĭontinuous salt spray exposures are widely specified for testing components and coatings for corrosion resistance. The Prohesion test uses fast cycling, rapid temperature changes, a low humidity dry-off cycle and a different corrosive solution to provide a more realistic test. Visit our standards page or see LF-8131 - Partial List of Standards Met by Q-FOG for more information. The Q-FOG SSP corrosion tester can perform numerous accelerated corrosion tests, including continuous salt spray (ASTM B117 and ISO 9227) and Prohesion (ASTM G85 Annex 5). Model SSP for Prohesion or Conventional Salt Spray Tests See LF-8110 - Q-FOG Specifications for comparative information, or see the Features Tab. Q-FOG CCT-1100: conventional salt spray, Prohesion, and 100% humidity, 1103 liter chamber volume.Q-FOG CCT-600: conventional salt spray, Prohesion, and 100% humidity, 640 liter chamber volume.Q-FOG SSP-1100: conventional salt spray and Prohesion tests, 1103 liter chamber volume.Q-FOG SSP-600: conventional salt spray and Prohesion tests, 640 liter chamber volume.Model CCT performs salt spray, Prohesion, and 100% humidity for most cyclic automotive tests. Model SSP performs traditional salt spray and Prohesion tests. Q-FOG corrosion test chambers are available in two types. See LF-8110 - Q-FOG Specifications or visit our standards page for a detailed list of test methods met by the Q-FOG chamber. Even extremely complex test cycles can easily be programmed with the Q-FOG controller. Within one Q-FOG chamber, it is possible to cycle through a series of the most significant corrosion environments. More sophisticated automotive methods may call for multi-step cycles that incorporate humidity or condensation, along with salt spray and dry-off. Simple cycles, such as Prohesion, may consist of cycling between salt fog and dry conditions. In a Q-FOG cyclic corrosion tester, specimens are exposed to a series of different environments in a repetitive cycle that mimics the outdoors. Because conventional salt spray methods failed to mimic the natural wet/dry cycles of the outdoors, test results frequently provided poor correlation to outdoors. Prior to cyclic corrosion testing, conventional salt spray (a continuous salt spray at 35˚C), was the standard way to simulate corrosion in a lab.
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