Drawing and annealing technology

The MM 85 rod breakdown wire drawing machine was developed by Niehoff to simultaneously draw to copper, aluminium or alloy wires to finished diameters of 1mm-5mm at production speeds up to 38 m/second. it includes a quick-change drawing basin with reliable separation of drawing emulsion and gear oil via a mechancial seal, and a touch screen-based user interface and fault display.
MM85 can be combined with the two-wire version of an R501 or an RA 501 continuous resistance annealer.The R501 annealer was designed for copper wire. while the RA501 annealer is adapted to the requirements of aluminium and aluminium alloy wires. Both annealers are designed for energy efficient operation.
Wires exiting the annealer are completely dry. The entire wire path inside the RA501 aluminium annealer is covered with protective gas to prevent oxidation of the wire surface.A digital annealing voltage controller ensures repeatable and consistent wire anneaing quality. Freely programmable control systems(PLCS) and standardised interfaces make the drawing and annealing line easy to combine with many spooling and coiling systems, Niehoff has developed take-up and spooling systems for the whole range of wire drawing applications.
As a result of the design and control characteristics, the wires drawn on an MM 85 drawing line have similar properties with very fine tolerances along their entire length , and operating conditions are characterised by considerably reduced down times. Based on 7000 hours per year of operation and 80% utilisation, wire production  outputs of up to 31000 t/a for copper wire, and 18000 t/a for aluminium wire , are possible.