TPT July 2009

C oating P ickling & G alvanizing T echnology

Heat for coatings

Vicote ® coatings made from Victrex ® Peek™ polymer are designed to provide excellent scratch and wear resistance, strength and durability for demanding applications in aggressive environments that require exposure to extreme conditions such as high temperature, chemicals and abrasion. Using Vicote coatings is said to extend application life and improve product performance and functionality in areas including chemical processing and transport components, vessels, pipes, valves, and ball seats, industrial mixers and agitators, textile manufacturing, equipment components, ultra-pure water systems, process tanks and appliances. Victrex Peek polymer is a high performing thermoplastic, typically used for replacing metals. Key properties of Victrex Peek polymer are its high temperature performance, friction and wear resistance, chemical resistance, low flammability, Since 1968, Elind has designed and manufactured complete solutions for applications where induction heating is required. Elind is known in the market for rolling mills, hot forging and heat treatments such as hardening and tempering of bars and pipe and annealing and heating of tube and pipe. Induction heating for pipe coating is the only method to produce the required results in terms of scattering and uniformity of the heat into the pipe wall prior to the application of the polyethylene film.

Elind is able to supply reliable tailored solu- tions for these applications. The equipment mainly consists of a medium frequency static con- verter complete with MF capacitor battery and cooling group, connecting bus bar, inductor-supporting

 Elind designs and manufactures induction heating solutions

Elind – Italy Fax : +39 011 9572502 Email : info@elind.net

frame, and heating inductors (number and size to suit to the produced pipe range).

Vicote powder coatings offer enhanced corrosion protection and wear and cut through resistance; coated parts range in diversity from components in oil and gas, ultra pure water systems, industrial, pharmaceutical and food processing applications. Vicote 700 Series powders have good radiation resistance and can withstand high doses of Gamma radiation without embrittlement. Victrex is developing new powder and dispersion coating grades based on Vicote coating, which will offer an even higher level of adhesion to metal substrates than the standard powders and will be suitable for coating of internal surfaces such as pipes and other parts with IDs. Initial tests have shown that there is no de- lamination of the coating from the substrate when subjected to thermal shock testing from 250°C (482°F) into cold water, or in a 24 hour boiling water test. Victrex plc – UK Website : www.victrex.com n

High performance coatings

smoke and toxic gas emission, hydrolysis resistance, electrical performance, high strength to weight ratio and dimensional stability. A Vicote coating can provide corrosion resistance at thinner dry film thicknesses (DFTs) than many fluoropolymers. The thinner coating in conjunction with the lower density makes the coating a cost- effective alternative to more traditional corrosion coatings. Typically a Vicote coating has around 60% of the density of a fluoropolymer coatingmaking it a competitive coating on a volumetric cost basis but in addition, the higher mechanical properties and good permeation resistance mean that performance can be achieved with thinner coatings and at a reduced overall systems cost as Vicote coatings can be applied to the substrate without a primer.

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J uly 2009

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