EoW May 2011

Drawing dies & cones

The lubrication is one of the crucial factors for the quality of the drawn wire. An interrupted lubrication in the steel wire drawing process causes an increase of surface tension in the wire, strong pressures inside the die, rapid die wear, breakage of the drawing nib and consequent non-programmed interruptions in the wire drawing process. In order to avoid these problems, Koner has studied a new concept line of drawing dies – K. 340 and K.370 pressure drawing die (patented worldwide), specially constructed and designed to greatly improve lubrication in dry drawing of steel wire. For the drawing the K.320 tool has been created, which allows wet drawing process characteristics and also a great economic saving. The K.340/K.370/K.320 methods provide considerable operating advantages: • Production at maximum drawing speeds • Less machine down-time for die replacement • Better and more homogeneous wire quality • Wire drawing under optimum quality control • Nib life increased by 30% and more to traditional dies • Overall costs reduced by around 40% (you only change the nib and not the entire die) • Application of the requested quantity of lubricant coating to the wire • Better wet or dry redrawing operations • The overall dimensions of K.340/ K.370/K.320 tools are the same as for traditional dies • Savings on transport – even large quantities of nibs can be delivered rapidly in small packages directly to customers in any part of the world • Elimination of die rejects and the accumulation of no longer useable drawing dies in the warehouse. A return can also be gained from the sale of worn tungsten carbide parts. Koner – Italy Crucial factor for quality of drawn wire

Carbide dies and steel tools Hedalloy is a tool and die machine shop formed in 1947. The company’s equipment includes manual and CNC lathes, hones, mills, surface grinders, ID grinders, OD grinders, machining centres, sinker EDM, wire EDMS and hydraulic press.

The company manufactures all tooling necessary for nut and bolt makers, hot and cold headers, presses, hammers, upsetting, extruding, forging, metal forming, wire draw equipment and others. It can design, engineer and manufacture part development packages on multi-station machines to efficiently produce special cold formed parts from coiled wire. quality carbide and steel tooling such as carbide die and punch assemblies – new and rework or repair, casings, Hedalloy manufactures

▲ ▲ Carbide assembled quills for wire

High pressure die from Redies Redies – the central European die maker – has developed a High Pressure Die (HPD) combined from TC and polycrystalline diamond inserts. The die consists of three interchangeable/renewable parts screwed and tightened into a mounting with standard outer size 43 x 30mm. The drawing part is made from MANT® PCD. holders, sleeves, inserts, wafers, plates, strippers, shedders, die kick-out pins and punches (piercing, extruding, stamping, round, square, hex, torx, lobed, slotted, phillips, spline, raised lettering, characters, engraved, 12-point, socket and customised/special). Hedalloy Die Corp – USA Fax : +1 216 341 5393 Email : hedalloy@sbcglobal.net

▲ ▲ The Redies TC-PCD high pressure die

The HPD has proved to give a better surface and a longer lifetime with drawing wet as well as dry the following materials: stainless steel, high carbon steel and spring wire. Redies Srl – Italy Fax : +39 0362 852 078 Email : info@redies.com Website : www.redies.com

Fax : +39 025 455 832 Email : tkt@tktgroup.it Website : www.tktgroup.it

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EuroWire – May 2011