MAGNETIC STEEL BONDING

1.The Role of Magnetic Steel Adhesive in Motors

(1) Provides high-strength bonding: As a key component of the motor, magnetic steel provides a stable magnetic field. During motor operation, the magnetic steel adhesive has high bonding strength, effectively preventing the magnetic steel from shifting or falling off at high speeds, thereby ensuring the stability and safety of motor operation and avoiding risks such as magnetic field imbalance, abnormal noise and even burnout caused by magnetic steel falling off.

(2)Electrical insulation performance: The magnetic steel adhesive has high dielectric strength and can act as an insulating layer to isolate the magnetic steel from the stator winding, preventing short circuits. At the same time, its precise filling ability can minimize the air gap, ensure magnetic pole alignment and uniform magnetic field distribution, thereby reducing eddy current losses and vibration noise, and improving motor efficiency and power density.

(3)High-temperature resistance and thermal stress compensation: The magnetic steel adhesive has excellent heat resistance and can withstand operating temperatures of 120℃-180℃ over the long term, adapting to the temperature rise caused by motor coil heating. Its low curing shrinkage and matching thermal expansion coefficient can effectively buffer the thermal stress difference between the rotor steel core and the permanent magnet, reducing adhesive peeling and cracking caused by thermal cycling, and significantly extending the service life of motors under high and low temperature conditions.

2.One-Component Heat-Curing Epoxy Adhesive

- GREPOXY™ LX-406 Series

One-component heat-curing epoxy adhesive - GREPOXY™ LX-406 series offers core advantages such as medium-low or medium-high temperature curing, high bonding strength, wide temperature range applicability (-40℃ to 180℃), excellent resistance to media such as oil, acid and alkali, and easy application, while being environmentally friendly and safe. It is widely used for bonding magnetic steel in servo motors, drone motors, brushless motors, etc.

3.Two-Component Epoxy Adhesive - GREPOXY™ DG-3S

This product has won the first prize of the National Science and Technology Progress Award and the Geneva International Invention Gold Award.

Two-component room-temperature-curing epoxy adhesive - GREPOXY™ DG-3S features high bonding strength and is suitable for a wide temperature range (-40℃ to 150℃). It offers excellent resistance to media such as oil, acid and alkali, easy application, and is environmentally friendly and safe. It is widely used in automotive, industrial, electronic and other fields, such as structural bonding and sealing of automobile fuel tanks and water tanks; bonding of motor permanent magnets; potting of high-voltage connectors; and bonding of machine tool guideways to treated PTFE surfaces.

4.Core Product Advantages

High Bonding Strength

OUR MAGNETIC STEEL ADHESIVE ADOPTS ADVANCED FORMULA TO ENSURE ULTRA-HIGH BONDING STRENGTH UNDER EXTREME CONDITIONS, WHICH CAN RESIST CENTRIFUGAL FORCE, VIBRATION AND IMPACT DURING MOTOR OPERATION, PREVENT THE MAGNETIC STEEL FROM LOOSENING AND FALLING OFF AFTER LONG-TERM USE, ESPECIALLY SUITABLE FOR HIGH-PERFORMANCE MOTORS AND PRECISION EQUIPMENT FIELDS.

Good Temperature Resistance

THE USE OF SPECIAL EPOXY ADHESIVE HAS EXCELLENT TEMPERATURE RESISTANCE AND CAN MAINTAIN STABLE BONDING PERFORMANCE AT HIGH TEMPERATURES. AFTER TESTING BY AUTHORITATIVE INSTITUTIONS, THE PRODUCT CAN OPERATE STABLY WITHIN THE RANGE OF -40℃ TO 180℃, MEETING THE REQUIREMENTS OF HARSH INDUSTRIAL ENVIRONMENTS AND SIGNIFICANTLY IMPROVING EQUIPMENT RELIABILITY.

Strong Chemical Stability

EPOXY ADHESIVE HAS STRONG RESISTANCE TO CHEMICAL SUBSTANCES AND CAN RESIST POTENTIAL CHEMICAL EROSION INSIDE THE MOTOR. IN ELECTRIC VEHICLE MOTORS, IT CAN WITHSTAND CORROSION FROM COOLANT AND OTHER SUBSTANCES, ENSURING STABLE AND RELIABLE BONDING OF MAGNETIC STEEL.