WCA March 2007

Wire Drawing Machinery

In the example pictured, the shaped wire is drawn onto a horizontal capstan fitted with extension arms suitable for collecting loose coils of the shaped wire. The unit includes a variable speed drive, re-circulating coolant system with individual flow controls and is fully guarded for operator safety. Units such as this can be incorporated with Fenn wire flattening mills to form wire flattening and shaping lines. For irregular shaped wire, Fenn makes other types of turks heads more suitable for that application. Also available for shaped wire drawing are different types of pulling devices, including shedding drums and plain- faced double capstans. Fenn Technologies also manufactures custom-built wire drawing machines, swagers, spring coilers and rolling mills.

Witels-Albert believes that the DR series straightening systems beats the common practice in the industry of using the drawing die for wire straightening. Experience clearly shows that the die-based method has disadvantages both for the workpiece and for the tool. The primary disadvantages for the workpiece or process material are non-uniform distribution of tension and variations in material structure across the diameter. This results in a level of finished product quality that makes handling difficult in downstream processes, causing repeated problems. It has, for example, a negative impact on the dimensional accuracy of finished products (springs, bent parts, etc.). Straightening system for dry drawing machines ▲ 100 years of experience Fenn Technologies has been manu- facturing a range of wire drawing, wire shaping, and rolling mill equipment for more than 100 years. Using Fenn’s wire shaping equipment, round wire is presented to a wire shaping mill. The wire is shaped by being drawn through two model 3U HP turks heads units. These units are suitable for the production of squares and rectangles using two simple roll adjustments. Witels-Albert – USA Fax : +1 410 228 1813 Email : info@witels-albert-usa.com Website : www.witels-albert-usa.com

Fenn Technologies – USA Fax : +1 860 667 4667 Email : mcdiv@fenn.spx.com Website : www.fenntech.com

A generation of wet drawing machines

Many years of development and the adoption of innovative technical solutions has allowed M+E to create their new generation of wet drawing machines, significantly reducing or eliminating many of the quality and production problems.

Operation of M+E wet wire drawing machines at leading wire manufacturers and with different wire types confirmed remarkable quality and productivity increases compared to traditional machines, while keeping the die wear constant. M+E wet wire drawing machines are particularly noted for drawing of the following steel wires: brass-coated wire (steel cord, saw wire), electrolytic or hot dip galvanized wire, stainless steel wire and high quality spring wire. An M+E wet drawing machine, complete with fully-automatic spooler ▲

Fenn Technologies’ wire shaping mill

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Wire & Cable ASIA – March/April 2007