Posted to News on 24th Nov 2014, 10:12
Effective corrosion protection for aluminium drives: nsd tupH
Nord Drivesystems is promoting its nsd tupH sealed surface conversion system that it applies to aluminium drives so as to provide permanent corrosion resistance and offer a cost-effective and weight-saving alternative to stainless steel. Aluminium drives are treated to produce a smooth, ultra-hard surface that, in contrast to paint, is unaffected by blows or scratches. The drives are tested and proven in applications with a maritime atmosphere. Previous to that, they have proven their resilience against blistering per ASTM D714, corrosion per ASTM D610-08, and scribe per ASTM D1654-08 according to DIN EN ISO 2409. In addition, the ASTM D3170 Gravelometer test showed absolutely no loss of adhesion or chipping. The ASTM B117-09 salt spray test according to DIN EN ISO 9227 produced no corrosion even after 2000 hours.
In demanding atmospheres, nsd tupH drives can be used far beyond the usual service life of paint-coated systems. Their resilience and prolonged service life significantly reduces the service and maintenance requirements placed on customers. In addition, the treatment ensures high process safety: since no coating is applied but the surface itself is hardened, there can be no contamination of products or process media as can occur, for instance, with chipping paint. Even heavy impacts or scratches do not diminish the corrosion resistance. In contrast, scratches in paint or coatings can result in the damage spreading to adjoining areas, effectively rendering the protection useless.
nsd tupH is approved for food applications according to FDA Title 21 CFR 175.300. Treated systems therefore resist cleaning agents in the pH2 to pH12 range. nsd tupH is available for all aluminium-enclosed drives: four gearbox families, smooth-surface motors, and distributed drive electronics units.
To learn more about the nsd tupH sealed surface conversion system go to www.nord.com.
