FEATURE NEWS:
Wire drawing machines for low and high-carbon steel wires
Specialising in the production of straight-line wire drawing machines for low and high-carbon steel wires, bull blocks as well as accessories such as static coilers, and spoolers, etc., Ernst Koch GmbH & Co KG, Germany, in co-operation with the German company GSG GmbH, has developed a new technology designed for the multiple wire drawing process, for which the conventional drawing die holders may be replaced by rolling cassettes with the utmost precision. This process has been successfully implemented, particularly for the drawing of low-carbon and stainless steel wires, enabling a production of final wire diameters > 0.8mm with the lowest tolerances in ovality. Essential advantages of this production process are:
- Low space requirement;
- Lubricant coating only at the wire inlet of the drawing machine;
- Low lubricant quantity on finished wire;
- Less friction and thus lower wire temperatures;
- Lower energy requirement;
- An average life-time of the tungsten carbide rolls up to 3,000 tonnes can be achieved;
- Drawing speeds up to 30m/sec. possible.
The company also manufactures wet drawing machines, such as the GDZ series, designed according to the conventional, reliable immersion principle. This is especially suitable for drawing iron and steel wires in small diameters with bright, zinc coated or copperised surfaces. The drawing process is carried-out in a liquid bath, ensuring an excellent lubrication and cooling. The first drawing die holder can be mounted on the outside of the inlet side for dry drawing lubricant and the last drawing die holder is mounted - and adjustable from all sides - on the wire exit side of the drawing lubricant tank. In addition, Koch provides its series of KNH wet drawing machines, designed for drawing high-carbon and stainless spring steel wires. In order to achieve a good final wire quality particular care has been taken during construction to guide the wire with as few deflections as possible. The drawing cones are arranged horizontally. The drawing liquid is pumped up from the lower storage tank to the upper drawing section by means of an integrated pump. The drawing cones are made of high-quality steel with a special wear-resistant surface coating. The KNH drawing machines are driven by a frequency controlled AC-motor via special toothed belts. The drawing capstan can also be mounted beside the drawing section and equipped with a straightening rim and a roller straightening device.
Another series in Koch’s portfolio of wet drawing machines is the KTZ series that is designed for drawing steel wires with the highest quality demands. The drawing cones all have the same diameter and are arranged as individual cones in a tandem system. The drawing process is carried-out in a liquid bath, ensuring excellent lubrication and cooling. The drawing capstans can be mounted on to the gear box and equipped with a straightening rim and a roller straightening device or designed as a horizontal pull-out capstan for a direct wire guiding to a spooling machine. On demand the drawing machine can be equipped with double or finishing capstans for production of small coils. The machine can be delivered in a 1-, 2- or 3-wire version in order to draw and spool several wires of the same diameter at the same time. This ensures the highest possible efficiency, thus saving space and energy.
Company: |
Ernst Koch GmbH & Co. KG Maschinenfabrik |
Country: |
Germany |
Fax: |
+49 0049 2372 985 167 |
Email: |
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Website: |