50/60Hz continuous demagnetizer

The continuous demagnetization process is often applied in industrial production due to the way the parts are handled. In most cases continuous demagnetization is carried out by passing the parts through a tunnel coil with constant alternating field and subsequent distance increase to achieve the needed decaying field. Technically, this is done either manually by hand or as usual today, by a conveyorized demagnetizer.

The demagnetizing effect of such tunnel or loop demagnetizers with mains connection 50/60 Hz is limited in materials with large wall thickness, high coercive field strength (hardened steel) and in multi part demagnetization in carriers or as bulk material. In such cases pulse demagnetization with controlled demagnetizers is far more effective.

Loop demagnetizer
Loop demagnetizer DS03

Continuous demagnetization examples. Demagnetizing of:

  • small pieces with thin wall thickness
  • sheet metal parts up to a few millimeters of wall thickness
  • rods or pipes of low wall thickness
  • endless parts flow on conveyorized demagnetizers belts

Specifications type DS tunnel demagnetizer:

DS Electrical connection (1) Active area WxHxD [mm] Duty cylce [%] Field strength [kA/m] (2) Dimension WxHxD [mm] Weight [kg]
DS03 230/277VAC 50/60Hz 150x100x130 100 26 408x282x170 35
DS04 230/277VAC 50/60Hz 250x250x160 100 22 510x405x200 60
DS05 230/277VAC 50/60Hz 250x350x210 100 18 510x505x25 70
DS06 230/277VAC 50/60Hz 260x130x145 100 30 520x315x185 55
DS07 230/277VAC 50/60Hz 350x300x210 100 18 610x455x250 78
DS08 230/277VAC 50/60Hz 350x450x210 100 17 610x605x250 95
DS09 230/277VAC 50/60Hz 400x200x210 100 26 660x355x250 80
DS10 400/480VAC 50/60Hz 400x400x210 100 18 660x555x250 110
Other on request

(1) A reduced duty cycle of approx. 30% allows the connection of a 230/277VAC coil to 400/480VAC in order to increase the field strength.

(2) Maximum field strength (peak value) at 100% duty cycle.