MAGNETIC HEATING OF BILLETS

INTRODUCTION

In July 2008 the new innovation – magnetic billet heater – was put into business operation in Germany (German aluminum expulsion works Weserlau GmbH and Co. KG). The second framework has been requested by Italian backup of Sapa in Bolzano. The beginnings of this innovation can be found in 2004. Organizations Zenergy Power and Bültmann got financing from Germany's ecological financing organization DBU to add to another innovation for billet heating. The main model was appeared in April 2005 at the Hannover Fair. Further with the support from the DBU, the gadget was produced and put into administration at Wese

HISTORY AND ADVANTAGES OF MAGNETIC HEATING :

In July 2008 the new innovation – magnetic billet heater – was put into business operation in Germany (German aluminum expulsion works Weserlau GmbH and Co. KG). The second framework has been requested by Italian backup of Sapa in Bolzano. The beginnings of this innovation can be found in 2004. Organizations Zenergy Power and Bültmann got financing from Germany's ecological financing organization DBU to add to another innovation for billet heating. The main model was appeared in April 2005 at the Hannover Fair. Further with the support from the DBU, the gadget was produced and put into administration at Wese.

CONVENTIONAL INDUCTION HEATING (AC HEATING) :

Electrically conductive materials are today heated or dissolved in routine incitement heating gadgets. Billet is put inside copper curl. The curl is supplied by AC current and creates electromagnetic field that alters course in time. The field affects vortex currents in the workpiece (Faraday's law) what's more, vortex currents heat up the billet because of its electrical resistivity (Joule's law). In both parts of the gadget (inductor loop, workpiece) electrical misfortunes happens. The heating of the curl is the principle wellspring of vitality misfortunes in traditional AC incitement heating frameworks. Thus, loop must be cooled with water to keep from softening. The degree of the misfortunes relies on upon the proportion of the resistances of the loop and the billet. The proficiency of the framework is 50 – 60%. Traditional gadgets have a few impediments. Air conditioning heaters working with basic force network frequencies create whirlpool currents for the most part near to the surface of the workpiece – it delays the time of heating. AC induction heating further requires a medium voltage power supply and VAR compensation.

DC MAGNETIC HEATING :

Magnetic heater in Weserlau comprises of DC fueled superconductive magnetic curl cooled to low temperature. The loop produces an adequately solid magnetic field with a force information of 10W.

Magnetic field of a DC fueled curl is not fluctuating in time, the billet is pivoted inside of the field in request to affect vortex currents. Vortex currents work to contradict the revolution and make an in number braking  torque. This is overcome by mechanical electric engines of a size of 100 – 50 kW. Engines are supplied by standard recurrence converters (misfortunes 2-3% of the aggregate influence utilization of the heater). Cooling framework and power supply devour around 13 kW, the aggregate productivity (counting all misfortunes brought on by fringe specialized gadgets) is more prominent than 80%. The heating procedure is speedier, more homogeneous Furthermore, exactly controllable. The framework doesn't require expansive cooling establishments, complex vitality supply and VAR pay. The heater comprises of four fundamental parts – superconducting magnet, refridgerator, engine and heating chamber. The fundamental part is the superconducting magnet that is kept at its working temperature by the refridgeration framework. The billets pivot in two thermally protected heating chambers, the rotational vitality is given by electric engines on either side. The engines can slide in also, out to oblige diverse billet lengths. No segment in the heater is subjected to noteworthy temperature expand, vibrations or some other mechanical anxiety compone

MAGNETIC HEATING ADVANTAGES:

• Low frequencies
• Wide material range
• Temperature tapers
• Low maintenance requirements
• Reliabilit

Stead Fast Engineers provides world class induction heating and melting solutions for both ferrous and Non ferrous with a great focus on customization so that every machine is nothing less than perfect. With a family of more than 400 satisfied customers all over the country and abroad, Stead Fast Engineers is expanding at a rapid pace. With offices located in major cities we ensure that the service is quick and effective and breakdown time is negligible. Adopting stringent quality management systems during different stages of production - the pre-process, In-process and pre-dispatch stage we believe in manufacturing the best quality every time. http://www.steadfastengg.com/