WIRE DRAWING

Eder offers easy to understand and operate standard, semi-automatic and fully automatic concepts, ready for operation. Single machines or complete workshop lines are available, as well as technical assistance whenever required.
Reconditioning drawing dies on a regular basis is essential to the production of consistent high quality wire, as it enables longer uninterrupted wire drawing processes, improved performances and more tons of drawn wire.
Eder Engineering traditionally always had a technically leading position in advanced diamond/PCD die working equipment, offering universal flexibility and application, a high degree of automation – even on standard units – and highest possible efficiency, particularly in machinery for the reconditioning and production of diamond and PCD dies. The latest development in this respect being the revolutionary USP-Twin conception, the first ever Ultrasonic die processing machine with two workstations to be handled by only one operator, offering double efficiency. While Ultrasonic machines in general are needed to work the conical die portions, high speed mechanical wire type conceptions are used to calibrate and polish the cylindrical die bearing.
When Eder managed to work the first Compax-PCD die tools in 1968, then watching their superb performances onwards when being used for drawing of non-ferrous wires, it was initially presumed that a similar success would be available for using PCD dies in the scene of drawing ferrous wires too. Although various such breakthroughs could be achived, e.g. for drawing of stainless steel wires etc., particularly after the availability of finer grained and thermally stable PCD die blanks, the majority of ferrous wires is still mainly drawn using tungsten carbide drawing die tools. However tc dies do need totally different working methods and machines than the before mentioned diamond and PCD dies.
For the average tc die user, having to deal with often changing die bore diameters and in an wide size application range, Eder’s semi automatic ETC-1/HF is an ideal kind of equipment for such – more or less – individual die processing operations.
The ETC-1/HF unit can grind and polish both the conical and cylindrical die bore sections in record time, due to a high frequency electric workspindle and an easy to use stock removal adjustment mode by means of a micrometer. Average all included die processing times are between 3 to 10 minutes only.
Wire drawing plants which have to deal with lots of tungsten carbide dies in pretty much identical bore sizes and/or similar stages of wear, however are better off with fully automatic equipment. Due to a close cooperation between Eder-Austria and Agir-France, Eder are now in a unique position to offer efficient completely automatic machines for all usual sizes of round tungsten carbide wire drawing dies .
All operations of these conceptions are managed by an OPLC combined with an intelligent program. According to the type of the tc die nib material to be processed and the kind of operation chosen, this OPLC allows to adjust the program perfectly, in order to optimise the production and/or reconditioning of tc dies within the indicated work range.
For processing tc dies in the size range between 1 to 6.5 millimetres diameter, model TCLD-C-CNC for producing or reconditioning of the conical die portions is available, while the other model TCLD-B-CNC serves for a precise processing of the cylindrical bearing. If requested, both TCLD machines can get combined to operate in an in-line mode, by means of an intelligent robot connection.
Steel cord wire producers and other special plants are using lots of tungsten carbide dies with small bore sizes. For these customers Eder-Austria can offer a sophisticated, but easy to use combination conception, designated model TCSD-CB-CNC which can work both the conical die portions as well as the cylindrical bearing part in a size range between 0.10 to 1.50 millimetres diameter and with highest precision possible. The operational system of this special conception is shown by the attached drawing.
Perfectly manufactured and well maintained wire drawings dies, be them diamond/PCD or TC die tools, produce longer uninterrupted runs, excellent wire surface quality and improved performance, leading to considerably higher outputs. Just mind that any necessary change of a die set in wire drawing machines, usually will cause a down time of between approx. 20 to 40 minutes. If one can increase die life for 10 percent, this means that one also can increase the overall productivity for 10 percent.
The before mentioned equipment of Eder-Austria proves to be both cost effective, easy to operate and in repairing stages it offers a fast return by allowing a considerable prolongation of the dies’ service life, leading to remarkable savings in any wire and cable producing plant.

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