Product introduction

Permalloy magnetostatic shielding chambers are closed or semi-closed magnetic shielding enclosures manufactured from high-permeability Permalloy sheets through laser cutting, CNC stamping, precision bending, welding, and other sheet metal forming processes. They are designed to isolate external static magnetic fields and low-frequency stray magnetic fields, providing a low-magnetic-noise working environment for internal sensitive components. Our products are available in two material series: 80% Nickel (typical grades 1J79/1J85) and 48~50% Nickel (typical grades 1J50), in common thicknesses including 1.0mm, 1.5mm, 2.0mm, and 3.0mm, with custom chamber dimensions, structural configurations, and opening designs available upon request.

KEY FEATURES:

• High initial permeability (especially for 80% Ni), offering excellent absorption and bypass capability for static magnetic fields and low-frequency stray magnetic fields, effectively reducing magnetic field strength inside the chamber;

• Low coercivity and low hysteresis loss, enabling rapid response to magnetization and demagnetization, suitable for magnetic field environments with low-frequency alternating components;

• Near-zero magnetostriction for high-nickel (80% Ni) material, ensuring minimal dimensional change during magnetization, suitable for precision assembly and high-stability applications;

• Flexible sheet metal forming processes, supporting laser cutting, CNC stamping, bending, deep drawing, welding, and other processes for complex chamber structures including square, circular, and irregular shapes;

• Hydrogen annealing eliminates processing stresses and restores optimum magnetic properties, ensuring stable and reliable shielding effectiveness;

• Multi-layer shielding structures can be designed, with nested multi-layer Permalloy chambers further enhancing shielding effectiveness;

• High dimensional accuracy with custom designs available upon request, meeting mass production and precision assembly requirements.

TYPICAL APPLICATIONS:

• Shielding chambers for sensitive modules in precision electronic equipment, protecting internal sensors and signal processing circuits from external static and low-frequency magnetic field interference;

• Auxiliary shielding chambers for medical MRI equipment, providing local magnetic shielding for sensitive electronic components around MRI systems;

• Shielding chambers for avionics navigation instruments and gyroscopes, providing a low-magnetic-noise environment for fiber optic gyroscopes, atomic gyroscopes, and other inertial devices;

• Shielding liners inside vacuum chambers of semiconductor manufacturing equipment, preventing external magnetic fields from interfering with ion beams or detection signals;

• Magnetic shielding chambers for physics experiments, used in atomic magnetometers, fluxgate magnetometers, and other weak magnetic field detection applications to create near-zero magnetic environments.

Product type

Sheet Metal Parts

Product specification model

We offer flexible non-standard customization based on your 2D/3D drawings, including overall dimensions, sheet thickness, irregular cutouts, mounting hole layouts, bending angles, and surface finish options, fully meeting the diverse needs of clients across various industries for precision sheet metal components.