WCA November 2008

and

for wire treatment

Replacing zinc phosphate in cold forming

contrary of a deposit which is bonded only physically to the material, as in case of non reactive salts, which cannot stand the tensions related to the most extreme deformations especially on steel with high carbon content. The product is stable towards the acid drag outs from the previous pickling tanks. The drag outs cause balance problems in the acidity ratio in a phosphating bath (and even more in a bath with non reactive salts) and determine the formation of a defective coating. The product leaves such a roughness that makes the soaps and lubricating oil seizing easier. The dry deposit provides corrosion resistance in case the working does not follow immediately the treatment. The deposit, when dry, is stable to humidity. In fact, a deposit too sensible to humidity could hydrate causing rust problems as well as reduction of the performance in the die due to interaction of water with oils and lubricating oils.

Condorcoat K75 is believed to be the only finish that replaces traditional multi-stage zinc phosphate in cold forming. The process is straightforward and safe, extremely bonding and efficient also for extreme deformation. Condoroil’s research for an alternative product to zinc phosphate has been performed in order to propose a short and efficient process and, above all, a harmless product. With Condorcoat K75 the required steps for the material preparation, pickled or sand blasted, are reduced from the traditional four (activation, phosphating, rinse and calcination) to just one step and therefore easily insertable in line with the cold forming process itself. No rinse nor final neutralisation are required; this makes the water purification plant unnecessary while the different nature of the conversion product eliminates the necessity to have a filtering and/or sedimentation plant in the phosphating tank. This means a reduction in the plant and management costs for water treatment and sludge disposal. The chemical reaction on the metal makes the product bonding and efficient also for extreme deformation, on the

Condoroil Impianti Srl – Italy Fax : +39 0332 945303 Email : info@condoroil.it Website : www.condoroil.com

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Wire & Cable ASIA – November/December 2008