EuroWire March 2015

News Technology

Innovative OTA technology for quality wires

Medical technology, power engineering, or mobility – quality wire plays an important roll in all progressive industries. The OTA technology that has been developed by system supplier Koch achieves the top qualities that are demanded. enables non-diverted, straight-line drawing under a constant and reproducible counter tension. From pay-off to spooler – thanks to the linear wire drawing, especially accurate wire dimensions and high surface qualities are achieved. Depending on wire quality, dimension, and requirements of the end product, different machines with OTA technology from Koch are employed. For the production of pre-stressing steel wire and spring steel wire using capstans The drawing system

▲ ▲ As a system supplier, Koch designs, builds, and installs complete machine lines

with diameters of up to 1,200mm, the KGT 47 OTA sets benchmarks.

low- and high-carbon steel wires as well as stainless steel wires. The KGT 12 produces fine wires and rope wires with diameters of less than 0.8mm. Here, a dynamically regulated process optimisation ensures the required accuracy. The OTA technology puts Koch in a leading position on the global market as it offers economical production with the utmost accuracy, reproducibility and product quality. As a system supplier, Koch designs, builds and installs complete machine lines according to customer specifications. The company, which has been established for more than 90 years, has always made drawing machines in-house. Coilers and spoolers, which are also produced in-house, ensure that the wire is collected efficiently and carefully, even on heavy coils. Peripheral modules made by partner companies complete the machine lines, for instance, fulfilling functions such as cleaning the wire surface or treating it with copper, aluminium or zinc. Customers in more than 60 countries value Koch’s technical know-how in the areas of engineering, drive technology, programming and control. Ernst Koch GmbH & Co KG – Germany Website : www.koch-ihmert.de

The machine’s size is compact and despite its tractions of up to 90,000 N, it generates very little noise. Also part of the OTA family is the KGT 25. It is especially suitable for

Smooth from Applied A line of Teflon®-coated forming mandrels for catheter fuse welding and tipping operations that are designed to optimise ID quality and production speed are available from Applied Plastics. Applied Plastics’ PTFE Natural® forming mandrels feature a smooth surface that provides a 0.5 dynamic coefficient of friction to prevent sticking, block tubing from shrinking, and simplify catheter removal. Allowing over 25 per cent elongation without flaking or failure, these extrusion mandrels are chemically inert and can operate up to 315°C (600°F) continuously.

▲ ▲ The Teflon-coated

mandrels from Applied Plastics

Offered in stainless steel or nitinol, the mandrels can be supplied pre-cut in 0.127mm to 25.4mm diameter sizes

with ±.003mm to ±.013mm tolerance, depending upon size. PTFE Natural® grey is available with zero PFOA. A proprietary surface preparation process before applying the coating assures the coating will not flake or crack. Applied Plastics Co Inc – USA Website : www.appliedplasticsinc.com

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March 2015