The key to the quality of an electromagnetic brake lies in the performance of the magnetic powder.

DC power Electromagnetic brake Widely used in metallurgy, engineering construction, chemical plants

　　DC power Electromagnetic brake Widely used in metallurgy, engineering construction, chemical plants, food processing, CNC machine tools, performance stages, elevator cabs, cargo ships, packaging equipment, and other equipment, as well as in power-off (safety) braking systems.

 

　　The cost-effectiveness of a brake can be judged from the following aspects:

       

　　Electromagnetic brakes mainly consist of a motor rotor, a driven motor rotor, and a support structure. Electromagnetic brakes are equipped with an excitation coil, and the electromagnetic coil around the ferromagnetic material and magnetic density generates an equivalent circuit. Electromagnetic powder brakes are filled with some magnetic tiles between the motor rotor and the driven rotor. Because the moving parts of the electromagnetic brake operate at high speed, a lot of heat is also generated, so the magnetic powder in the electromagnetic brake must have better temperature resistance and wear resistance.

 

　　When the excitation power of the electromagnetic brake is cut off, the magnetic powder will quickly return to the non-excited state, and the brake cannot be controlled. The key to determining the quality of an electromagnetic brake lies in the performance of the magnetic powder. When the electromagnetic coil is not plugged in and the cylinder is rotating, the centrifugal force presses the magnetic powder against the inner cavity of the cylinder, and a gap is generated between the magnetic powder and the rotor. The clutch does not cause high-speed torque, so it basically does not get hot. The higher the magnetic permeability of the magnetic powder, the lower the magnetic loss, and the better the brake control characteristics.

 

　　When the electromagnetic brake coil is energized, the current creates an electromagnetic field in the equivalent circuit, and the magnetic powder between the driven parts of the electromagnetic brake's digital amplifier section is connected into a chain. The sliding friction between parts can transmit torque and excitation current. More importantly, the inductance coil in the working gap of the electromagnetic brake increases, the electromagnetic induction force increases, and the torque transmitted by the electromagnetic brake increases. Conversely, the torque transmitted by the brake decreases. Adjust the size of the excitation current to adjust the size of the transmitted torque.

 

　　Electromagnetic brake operating mode

 

　　a. When the AC power of the electromagnetic brake is disconnected, the brake pads are separated from the brake disc, and a frictional torque is generated between the brake disc, brake pads, and flange, causing the rotating shaft to stop quickly;

 

　　b. When the magnetic coil is energized, the magnetic force attracts the brake pads, and the brake pads release the brake disc. At this time, the rotating shaft with the brake disc rotates normally or runs;

 

　　c. In the mechanical transmission system, the electromagnetic brake mainly plays the role of transmission and power control movement, and is a kind of automated control component widely used in industrial applications;

 

　　d. Electromagnetic brake It has the characteristics of compact structure, fast response, easy use, reliable application, good durability, and easy long-distance control.