Three-sided machining was ensured by several milling units in different arrangements. With this machine, complete machining to finished size in one operation was given by multiple snipping and finishing milling units in the appropriate combination. Over the years, the increased requirements and quality features of the steel industry resulted in further milling machine concepts, which were also implemented by the Evertz Group. In order to adapt to the requirements of the steel industry, numerous milling tests were carried out with a wide variety of materials, including highly tempered steels and stainless steels. Appropriate machine concepts were implemented here by the subsidiary Klopp Maschinenbau, which has more than 100 years of mechanical engineering experience. Both CNC portal milling machines and travelling column machines were newly developed. Automatic measurement of the slabs on the machine with direct error detection and immediate rectification are standard with today's CNC 3-D control and drive components for milling machines. Minimal chip removal without structural changes and sorted provision of chips are the result of many years of further development in the field of heavy machining. Today, slab processing is carried out, among other things, on a Klopp UFS 12000 travelling column machine with a longitudinal travel of 12 m, a transverse travel of 2 in and an automatically swiveling milling head for multi-sided processing with a drive power of 40 kW. Slabs up to 2000 mm wide can be milled. Specially developed tools with special geometries ensure maximum cutting performance, e.g. also for special stainless steels, Ni-based alloys, titanium, zirconium and copper. With the experience of more than 30 years of slab milling, all requirements of the steel and metal industry can be met today by Egon Evertz KG, the company says. Using the latest milling machine technology, the company says it can offer an economical alternative to slab grinding and scarfing. swz

stahl und eisen 02/2013