The working principle of the electromagnetic heating ring is based on the principle of electromagnetic induction.
When alternating current passes through the coils of the electromagnetic heating coil, an alternating magnetic field is generated. This alternating magnetic field generates an induced current, that is, eddy current, in the metal barrel of the wood plastic equipment.
The eddy current will heat the metal cylinder itself. Because the cylinder itself is a heating body, the heat can be directly transferred to the material, reducing the loss of heat, thereby improving the heating efficiency.
For example, just as the secondary coil of a transformer generates current and heat in a magnetic field, the electromagnetic heating coil makes the cylinder a "secondary coil" for efficient heating.
What problems should be paid attention to during the use of electromagnetic heating rings?
1. Installation specifications: Ensure that the installation is firm and accurate, and maintain an appropriate distance and contact with the heated object to avoid local overheating or uneven heating caused by improper installation.
2. Power matching: The power supply that matches the rated voltage and power of the electromagnetic heating ring must be used to prevent overload or undervoltage operation and damage the equipment.
3. Heat dissipation conditions: Ensure a good heat dissipation environment and avoid obstacles around the heat dissipation, otherwise it may cause overheating damage.
4. Electromagnetic interference: Pay attention to electromagnetic interference that may be generated on peripheral electronic equipment, and take shielding measures if necessary.
5. Regular inspection: Regularly check whether the wiring of the electromagnetic heating ring is loose, whether the coil is damaged, and whether the insulation performance is good.
6. Waterproof and moisture-proof: Avoid use in wet or water environment to prevent short circuit and leakage accidents.
7. Temperature control: Set reasonable temperature control parameters to avoid too high or too low temperature affecting the processing effect and equipment life.
8. Personnel training: The operator should be familiar with the operation and precautions of the equipment to avoid misoperation.
For example, if the surface temperature of the electromagnetic heating ring is found to be abnormally high, it should be stopped immediately for inspection, which may be caused by poor heat dissipation or abnormal power supply.
