EoW November 2008

english technology news

New puller range with heavy duty haul-offs

pressure on the extruded products. This avoids distortion and damage, particularly to thin-wall products. The new caterpillars also feature an updated drive package with direct drive AC servomotors to power the belts. Two digital servo drives are used in a master/slave configuration for optimum speed control. The top belt is designed to ‘float’ over any lumps or bumps created during the start-up of the extrusion line. The entire top boom is suspended on two air cylinders at either end. This allows the belt to automatically raise and lower itself over the lumps whilst still maintaining an adequate grip on the extrusion. The machines are fully guarded to the latest CE standards. Gillard offers a wide range of options to enable users to customise their machine to their needs. Peter Gillard & Co Ltd – UK Fax : +44 1684 290330 a bath with non-reactive salts) and determine the formation of a defective coating. The product leaves a rough surface finish that promotes the adhesion of the soap and lubricating oil. The dry deposit provides excellent corrosion resistance, important for applications where working does not follow immediately after the treatment. The deposit, when dry, is stable to humidity: a deposit that is too sensitive to humidity can hydrate, causing rust problems as well as reduction of die performance due to the interaction of water with oils and lubricating oils. Condoroil Impianti Srl – Italy Email : sales@gillard.co.uk Website : www.gillard.co.uk

New Gillard machine has longer belts for less pressure on extrusions ▲ ▲

lengths of either 1,500mm or 1,800mm. Belt widths are either 225mm or 300mm. Gillard claims that these longer belts enable higher tractive efforts to be achieved with considerably less clamping

Gillard has enlarged its range of precision caterpillar haul-off/take-off machines. The new machines are extra long belt versions of the Gillard ‘work-horse’ range. The extended belts are now available in

Replacing zinc phosphate in cold forming applications

nature of the conversion product eliminates the need for either a filtering 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 with the metal makes the product bond, even in cases of extreme deformation, unlike a deposit that is bonded only physically to the material, such as in the case of non-reactive salts, which cannot stand the tensions related to the most extreme deformations especially on steel with a 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

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 even for extreme deformation. Condoroil’s research for an alternative product to zinc phosphate has been carried out 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 a single step and is easily integrated with the cold forming process itself. No rinse nor final neutralisation are required; this makes a water purification plant unnecessary, while the different

Fax : +39 0332 945303 Email : info@condoroil.it Website : www.condoroil.com

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EuroWire – November 2008