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Zinc phosphating
steelISO 9001ISO/TS 16949

zinc phosphating
zinc phosphating
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Characteristics

Type
zinc
Substrate
steel
Certifications
ISO 9001, ISO/TS 16949
Applications
for electronics

Description

The Zinc Phosphating process is a chemical conversion of the surface steel substrate that by means of a weak etchant produces a slight layer of phosphates on the surface It is applied in a (bass) drum and (static) frame system with average thicknesses of 02 to 8 microns, obtaining an aesthetic aspect that may vary from grey to black. The whole process is exempt of Cr VI Its use is required for protection against storage corrosion (with specific anti-corrosive oils), cold deformation, improved resistance to friction and seizure reduction, reduction of noise and vibration, preparation before painting or before the adhesion of rubber, preparation of quality prior to the application of lamellar Zn. The weight of the coating is usually 10 to 20 g/m² in micro-crystalline layers, where we may control and adjust the roughness of the coating through grain refiners. The coefficient of friction and torque for the fixing elements may be modified in some occasions in accordance with the International Standards of the automotive industry. The embrittlement of the coating is minimal and the finish may be dehydrogenated without difficulty. “The distribution and thickness of the coating is completely uniform throughout the workpiece since it is a chemical finish. Respects European Directive 2003/EC/53 and RoHS.”

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