Views: 1 Author: Site Editor Publish Time: 2024-01-23 Origin: Site
In various types of motors, adhesives are widely used, mainly for functions such as fixing, insulation, sealing and structural enhancement. From the specific type and purpose of the motor, the application parts of the adhesive include the following aspects:
Application location:
Stator winding insulation: Use epoxy resin or polyurethane insulation to wrap the coil to prevent short circuits.
Core laminate bonding: Use epoxy glue or acrylic glue to fix the silicon steel sheet to reduce core vibration and eddy current loss.
Rotor guide bar fixing: The structural adhesive bonds the guide bar and the end ring to prevent loosening during high-speed rotation.
Bearing chamber seal: Silicone or anaerobic glue seals the bearing chamber to prevent grease leakage.
Features: It must be resistant to high temperature (insulation from B to H grade), vibration resistance.
Application location:
Brush fixing: High temperature resistant epoxy glue or ceramic glue bonded brush bracket.
Commutator insulation: Polyimide glue or epoxy glue coats the gaps between the commutation sheets to prevent arc breakdown.
Magnetic pole bonding: structural glue fixes permanent magnet or excitation coil.
Housing seal: polyurethane or RTV silicone seals the shell seams, which are dust-proof and water-proof.
Features: It needs to be resistant to brush wear and high temperature reversing sparks.
Application location:
Rotor magnet steel bonding: High shear strength epoxy glue fixes permanent magnet to prevent high-speed start and stop falling off.
Stator coil packaging: Epoxy resin or silicone potting adhesive protects windings, enhancing heat dissipation and shock resistance.
Housing assembly: Instant adhesive (cyanoacrylate) quick bonding plastic or metal housing.
Shaft and gear fixation: Anaerobic glue locks the shaft and gear to prevent micro-moving wear.
Features: It requires precise positioning and resistance to frequent start and stop impacts.
Application location:
Encoder component bonding: UV curing glue or epoxy glue fixes the optical encoding disk to ensure position accuracy.
Stator potting: Thermal epoxy glue fills the stator groove to improve heat dissipation and anti-electromagnetic interference.
Bearing pre-tightening: Pre-coated microcapsule anaerobic glue to adjust the bearing clearance and prevent loosening.
Housing shock absorption: Damping glue (such as silicone) fills the gap to reduce high-frequency vibration noise.
Features: High precision, low thermal expansion coefficient, and anti-electromagnetic interference.
Application location:
Permanent magnet bonding: High temperature resistant epoxy glue (150°C+) bonded to neodymium iron boron magnets, resisting centrifugal force.
Stator core bonding: acrylic structural glue stacks the iron core to reduce iron loss.
Hall sensor fixation: Flexible epoxy glue fixes the sensor to avoid mechanical stress damage.
End cap seal: Fluorosilicone sealing end cap, oil-resistant and high temperature-resistant.
Features: It needs to withstand high-speed rotation, high temperature and strong magnetic field environment.
Application location:
Micro magnet bonding: UV curing glue quickly bonds micro magnets to avoid high temperature damage.
Coil and armature fixation: low viscosity epoxy glue permeates the fine coil.
Plastic shell bonding: Quick-drying instant drying adhesive or modified silicone, suitable for lightweight materials (such as PBT, nylon).
Features: It requires low volatility, non-corrosiveness, and adapts to miniaturized precision assembly.
Application location:
High voltage winding insulation: Mica belt is impregnated with epoxy glue to form a multi-layer insulation system.
Fixture of groove wedge: Epoxy adhesive bonds groove wedge to prevent the winding from loosening.
Anti-corona treatment: Semiconductor glue coats the winding ends, uniform electric field distribution.
Features: High dielectric strength (>10kV/mm) and resistance to partial discharge.
Application location:
Bonding the rotor shaft to the yoke: high-strength anaerobic glue or epoxy glue transmits torque, replacing the keyway.
Cooling pipeline seal: Oil-resistant polysulfide glue seal coolant pipeline.
Impact-resistant structural reinforcement: The carbon fiber composite material is bonded to the metal shell (epoxy + toughener).
Features: It needs to be fatigue-resistant and high and low temperature cycles (-40°C~200°C).
Application location:
Corrosion-resistant seal: Fluoroelastomer or polytetrafluoroethylene (PTFE) glue sealed shell, resistant to seawater/chemicals.
Vacuum environment bonding: No volatile epoxy adhesive bonding parts to avoid vacuum deflation pollution.
Radiation-resistant potting: Specialty silicone encapsulates electronic components, resists gamma or cosmic rays.
Features: Extreme environmental tolerance (high pressure, radiation, ultra-low temperature, etc.).
Epoxy resin glue: high strength, high temperature resistance, suitable for structural bonding and insulation.
Silicone: good flexibility, aging resistance, used for sealing and shock absorption.
Polyurethane glue: oil-resistant and impact-resistant, suitable for gear and shell bonding.
Anaerobic adhesive: hypoxia curing, used for thread locking and bearing fixing.
UV curing adhesive: fast curing, suitable for precision electronic components.
