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Ferrite Impeder Rod

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Product Specifications:

Ferrite impeder cores are used for concentration of magnetic flux in high frequency, RF, induction welding of steel tubes and pipes. In this application ferrite core experiences temperature upto 150°C and the core properties must be optimized for this environment. Properties which influences the efficiency and the speed of the process are :

  • A high permeability (p) material to ensure high degree of magnetic flux concentration.
  • A high Saturation flux density Bs, at the working temperature, which determines, the maximum field in which the ferrite core can usually perform.
  • A high curie temperature at which the material ceased to concentrate magnetic flux, due to loss of ferrimagnetic properties.

For these applications, special ferrite materials are offered - They are having following excellent physical properties.

(a) High Curie temperature and a low temperature dependence of the initial permeability and of magnetic flux density in the working temperature range.
(b) A high saturation flux density in the working temperature range upto150 °C.

(c) Low losses with increase of temperature.

(d) A relative high amplitude permeability.

(e) A high stability of the initial permeability vs. frequency upto 1 MHz.

Following four types of Impeder Core are produced and supplied :

1. Solid Plain Core - P

2. Solid Fluted Core - F

3. Hollow Plain Core - PH

4. Hollow Fluted Core - FH

The overall straightness of Impeder Core is excellent and is controlled by passing it through a 200 mm long gauge with an inner diameter equal to, nominal outer diameter of the Core plus 1.0 mm.

All types of Impeder Core are supplied in a nominal length, equal to 200 + 5mm.
Applications:
Primitive Compasses, Diamond or Cubic Boron Nitride, Impeder Coolant Systems, High Frequency Welding of Tubes and Pipes etc.

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