A customer in southern Germany processes pump housings and valve bodies made from spheric grey cast and grey cast on 2 processing centers. Processing releases fine particles of abraded cast iron and graphite particles, which contaminate the cooling lubricant. The processing oil had to be replaced after a very few weeks of operation, because the surface quality of the work pieces was degraded as the contamination of the oil increased.
At Progress-Werke Oberkirch, a subcontractor to the automobile industry, deep-drawn parts are manufactured from carbon or galvanized steels. A problem arose on 2 Müller-Weingarten presses in which the cooling lubricant emulsion had to be changed every week due to the increased concentration of foreign oils and fine contamination. In addition, employees were suffering from skin irritations. A belt filter which was already in use on the installation did not improve cleaning performance adequately.
CVT Capellmann in Gosheim specializes in gearing production. It has a large chip removal machine and uses a low viscosity oil as the cooling lubricant for its CNC processing enters. A new installation was intended to address the problem of high oil consumption: CVT was having to replace about 1,000 l of oil a week, which was removed with the metal chips. The oil costs approx. 2,- € per litre.
Nexans, a worldwide leader in cable production, runs a production site in Dour, Belgium, which manufactures medium and low-voltage cables as well as aerial cables. Its metallurgical department for copper and aluminium uses 3 NIEHOFF wire drawing lines, swaging wire ropes from +/- 8 mm down to 1 to 3 mm final diameter. In order to achieve the necessary cooling and lubrication the wire as well as the drawing dies is complete immerged in high viscosity oil.
Obere Giesswiesen 32
Tel. +49 7731 92430