Small Common Sense Of Magnetic Powder Clutch Small Common Sense

The magnetic permeability of the magnetic powder clutch is higher, the magnetic permeability, heat resistance, wear resistance and fluidity are better. The relationship between the magnetic powder clutch transmission torque and the excitation current can be divided into no response time and the same excitation current. The increasing rise time tends to be substantially proportional to the transmitted torque and the exciting current before the magnetic saturation phenomenon occurs, and the transmitted torque after magnetic saturation is no longer proportional to the exciting current.

When the magnetic powder clutch is started, the accelerating torque is always kept constant due to the constant torque characteristic. Therefore, no shock and vibration occur when starting, the magnetic powder of the magnetic powder clutch is dry, and the excitation current can be fixed to be transmitted regardless of the slip speed. A certain torque, so the dynamic friction coefficient and the static friction coefficient are basically the same, the response time and speed, the excitation coil plus voltage, the excitation current is determined by the resistance and inductance of the excitation coil.

The response time of the magnetic powder clutch from the start of the coil to the torque reaching the specified value, the non-response time is about a fraction of the time constant, and whether the load of the magnetic powder clutch is appropriate has a great influence on the durability, and the magnetic powder for power transmission The time constant of the clutch is about 50 milliseconds minimum, and the special design can be less than 10 milliseconds. The same phenomenon occurs when disconnected. Because of the residual magnetism, the residual magnetic flux still generates a small amount of residual torque through the magnetic powder.