Manufacturing process of Permalloy coil
Nov 27, 2024
Material selection and processing
The first step in manufacturing Permalloy coils is to select the right material ratio. Typically, manufacturers use an iron-nickel alloy containing 78% to 80% nickel as the base material. These materials are processed through processes such as smelting, rolling, and annealing to ensure that they have ideal magnetic properties.
Coil winding
The winding process of Permalloy coils is very important, and the winding method will directly affect the performance of the coil. Common winding methods include single-layer winding, multi-layer winding, and honeycomb winding. In order to reduce the resistance of the coil and increase its Q value (quality factor), high-precision equipment is usually used during the winding process.
Heat treatment and forming
After winding, the coil usually needs to be heat treated. This process can improve the crystal structure of the alloy and make its magnetic properties better. After the heat treatment is completed, the coil is placed in a special mold for forming and finally made into the desired shape and size.
Testing and quality control
The manufactured Permalloy coil needs to undergo strict testing and quality control. The main test content includes the measurement of parameters such as magnetic permeability, coercivity, and hysteresis loss. Only coils that have passed rigorous testing can be put into use to ensure that they can operate stably in actual applications.