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The basic structure of traditional fingerprint resistant high quality rolled hard roll steel coil is a substrate Tuukka Rask Bruins Jersey , galvanized layer, hexavalent chromium passivation layer and organic coating. The combination of the hexavalent chromium passivation layer and organic coating gives the fingerprint resistant steel coil excellent corrosion resistance and fingerprint resistance. But hexavalent chromium is a harmful element restricted by the RoHS directive. Without chromium functional coating of galvanized hard steel roll is directly on the rolled hard roll steel coil coating a layer containing no organic coating of chromium, this layer of organic coating is not only to meet the requirements of corrosion resistance and resistance to fingerprint, also to meet the user processing Patrice Bergeron Bruins Jersey , using a number of performance, including the machinability, electrical conductivity, can be the coating resistance David Pastrnak Salute to Service Jersey , alkali resistance, solvent resistance, high temperature resistant yellow degeneration, and conform to the requirements of environmental protection Brad Marchand Salute to Service Jersey , etc.

The coating properties of functional coatings are closely related to the properties of coating agents themselves and the production technology of hard steel coil. Because the coating thickness is only 0.5 m ~ 2.0 m, bd puts forward higher requirements for the coating process. In addition, the coating drying and cooling process also play an important role in coating properties. Coating performance is also closely related to surface quality, surface roughness Tuukka Rask Salute to Service Jersey , coating thickness, coating uniformity, drying temperature and so on.
> Optimized coating process and successfully trial-produced coating primer. The coating agent for rolled hard roll steel coil mainly consists of water-soluble organicinorganic composite resin (acrylic resin), water-soluble anti-rust agent (SiO2) and film-forming assistant. The anti-corrosion effect of chromium coating is mainly based on the blocking effect of Cr3+ and the corrosion inhibition effect of Cr6+. Therefore Patrice Bergeron Salute to Service Jersey , the developed functional chrome-free coating should have the effect of forming a dense barrier layer and self-repairing the damaged part.

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Perry Carner
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