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A safe path through the standards jungle - 2020年04月25日(土)
A safe path through the standards jungleThe existing standards and tests for coatings only have a limited relevance for the manufacturers and end users of perforated parts such as engine bonnets or ventilation grilles for agricultural and construction vehicles. Even the most comprehensive customer standards often still lag behind today"s dynamic developments.1-10 over a duration of 500, 650, 800 and 1000 hours. "We can now, quickly and reliably establish whether the category of corrosion protection required by the designer for our parts is actually possible, even in the perforated area of the component,"explained Martin Schneider. Otherwise, Transparent powder coating one of the part"s vital functions, of letting air through, may be impaired. Depending upon the requirement, the results are available for the entire series of tests. Some of the standards are not meaningful for perforated sheet metal. SOLVARO. This is especially true if subsurface corrosion is measured at a scribed line, as this cannot be done with perforated parts. During the tests which SOLVARO did at the Institute of Surface Engineering (IFO) in Schw?bisch Gm?nd, Germany, the perforated parts were thoroughly tested. With the clear results from these tests, a better choice can be made from the wide-ranging standards available for the entire coating process, so that the requirements can be more precisely met. Coating holes and edges is a tricky matter A hexagonally perforated SOLVARO part can have up to 184,000 holes per square metre. The corrosion of perforated parts was measured to DIN EN ISO 4628. The team around Martin Schneider, the head of application engineering at SOLVARO, asked the questions: "Who needs which standard?", "What meets whose requirements?" and "Which test results are relevant for whom?", however there are specific challenges in the coating itself before a suitable, useful quality test can be chosen for perforated parts.If these coating hurdles have been overcome, then the quality assurance process must be adapted for the special features of the parts.solvaro. They have been documented in an interactive table and can be called up in an instant when advising customers
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