WCA January 2007

Dry & Wet Lubricants

Even when the oil is kept without movement for some days, only a small percentage of these fine particles will precipitate and can be removed. Therefore the oil is continuously polluted, and as a result, the drawn wire itself may become dirty, necessi- tating a cleaning step after drawing. Another drawback of keeping the dust parti- cles in suspension is that the viscosity of the oil increases, meaning that the drawing tem- perature has to be increased further. This generates a faster oxidation of the oil, reducing the oil’s life time and increasing the frequency of oil changes.

60mm²/s at 40°C. The synthetic additives show only a very limited tendency to oxidise, and in combination with the special deoxidants this feature ensures the viscosity of the oil does not increase. A special paper filtration system has been developed by Reber Systematic (Resy), using a three dimensional filter paper from TWE Dierdorf GmbH, which can further increase the lifespan of the Kubitrac AL drawing oils. The filter paper is particularly designed for medium and high viscose neat oils, and features special fibres which offer a high flow rate while ensuring filtration performance. Other advantages of the filtration system are that consumption of filter paper is low, the filter drag out is dry, and the system does not need expensive pumping systems – standard pumps can be used. Carl Bechem GmbH – Germany Email : bechem@bechem.de Website : www.bechem.de Reber Systematic GmbH + Co KG – Germany Fax : +49 7121 9483 38 Email : info@resy-filtration.com Website : www.resy-filtration.com

An example of steel wire drawing lubricants of the KUBITRAC series ▲

Bechem, Germany, has recognised this problem and has developed a new line of Kubitrac AL drawing oils, based on highly refined base oils combined with a higher level of synthetic lubricity additives and special deoxidants. The improved lubricity of these oils can lower viscosity to around 40-

During the drawing process, the temperature increases, and the viscosity of the oil drops. Oil temperature is maintained by heat exchangers at approximately 40-60°C. Due to the high viscosity of the oils, filtration is not possible, so all the swarf created by the drawing process stays in suspension.

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TWE Dierdorf GmbH – Germany Website : www.twedierdorf.de

Dry and wet drawing lubricant producer Pan Chemicals, Italy, is a producer of special drawing lubricants and coatings for ferrous, non-ferrous and stainless steel wire, and equipment for the wire industry. The company’s dry drawing lubricants can be used for low carbon steel wire, plating quality wire, welding wire, CHQ, high carbon steel wire, drawing after galvanising and high alloyed steel. The company also produces wet drawing lubricants (soluble lubricants, neat oils and greases), products for surface treatment (phosphate coatings, non-reactive precoatings, and precoatings for stainless steel), and auxiliary products for degreasing, surface treatment, pickling of stainless steel, and special applications. The range of equipment manufactured by the company includes sanding belt descalers, mechanical descalers, Deblaster TR 1 (single wheel shot blaster), rotating pressure die boxes, Borax coating and drying equipment, and high-tech die reconditioning equipment.

Pan Chemicals produces a range of drawing lubricants and coatings for wire ▲

Pan Chemicals SpA – Italy Fax : +39 035 977 288 • Email : info@panchemical.com • Website : www.panchemical.com

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Wire & Cable ASIA – January/February 2007