74VAC Permalloy Core 55mm Measurement Silicon Steel Transformer Core

High Permeability Permalloy Core For Current Transformer

Permalloy refers to an iron-nickel alloy with a wide range of nickel content, ranging from 35% to 90%. The biggest feature of Permalloy is its high magnetic permeability in weak magnetic fields. Their saturation magnetic induction intensity is generally between 0.6-1.0T. The simplest permalloy is an alloy composed of two elements: iron and nickel. Through proper rolling and heat treatment, they can have high magnetic permeability. At the same time, they can reasonably match the content of iron and nickel to obtain relatively high saturation magnetic induction. However, this permalloy has low resistivity and poor mechanical properties, so there are not many practical applications. At present, the widely used Permalloy is to add some other elements on the basis of iron and nickel, such as molybdenum, copper and so on. The purpose of adding these elements is to increase the resistivity of the material to reduce the eddy current loss after the core is made. At the same time, adding elements can also increase the hardness of the material, which is especially beneficial for applications with wear such as magnetic heads. The production process of permalloy is more complicated. For example, the plate rolling process, annealing temperature, time, cooling speed after annealing, etc. all have a great influence on the final magnetic properties of the material,The permalloy cores can be customized according to the user's size and performance requirements, adopting the crafts such as coiling, laminating, rivet stacking, self fastening and rubber molding. This kind of iron cores has excellent magnetic performances of super high initial permeability and high permeability, super low coercivity and low saturation magnetic induction.

Application:

It is mostly used in small transformers, pulse transformers, relays, transformer, magnetic amplifier, electromagnetic clutch,the reactor coreand magnetic shielding which work inweak magnetic orsecondary magnetic field.

3.Features
1).Low coercivity and magnetic hysteresis loss;
2).High resistivity and loweddy-currentloss;
3).High initialmagnetic permeability and maximum magnetic permeability;
4).High saturation magnetic flux density;

Parameters

parameter: