TPI July 2013

Corrosion prevent ion

Coating for increased corrosion protection Tube manufacturers generally focus on changing the shape of a metal workpiece, whether through cutting, bending, end forming or some other process. Another focus is the prevention of corrosion. Some fabricators rely on metalworking fluid to provide both in-process and final corrosion protections, while others use a final process to apply a short- to long-term corrosion preventive. Through either process, the corrosion prevention agents prevent corrosion of the steel by inhibiting the interaction with oxygen in the atmosphere. Whether the corrosion takes the form of red rust or black stain, the process is similar: oxidation of the metal is linked to reduction of other constituents in the process, including the metalworking fluids. Although corrosion is an overall problem in the steel industry, tube and pipe manufacturing faces similar challenges given the round, hollow shape of the metal. Quaker Chemical provides expertise to address corrosion related issues within these industries. For example, a major North American tube and pipe manufacturer was struggling with premature corrosion on pipes, resulting in end-user warranty claims causing revenue losses. The manufacturer determined that if it could find a coating that had more flexibility and increased corrosion protection, there was an opportunity to sell more tonnage. Quaker Chemical, a supplier of process fluids and coatings, helped the manufacturer identify process issues where heavy mill oil was present on incoming steel, impacting coating adhesion and residual coolant on the pipes from the washing process. Gummy deposits from the tube forming and welding operations were also present, causing appearance and dirt issues on the end product. Finally, vacuum issues affected the coating application. Quaker’s solution was Quakercoat™ UV 036 UV coating, which helped solve the identified issues and provided a more flexible coating to meet the needs of the sister mill. Often, this shaping requires a fluid to prevent friction, overheating or premature wear.

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Quaker also recommended switching to a more compatible coolant, and an improved cleaner and dewatering aid.

Messe Düsseldorf GmbH Postfach 101006 _ 40001 Düsseldorf _ Germany Tel. +49(0)211/4560-01_Fax +49(0)211/4560-668 www.messe-duesseldorf.de

Quaker Chemical Corp – USA info@quakerchem.com www.quakerchem.com

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July 2013 Tube Products International

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