Precautions when using casting copper heating plate:
1. The casting copper heating plate is allowed to work under the following conditions:
A. The relative dryness of the atmosphere is not greater than 95%, and there is no explosive corrosive gas.
B. The task voltage should not be greater than 1.1 times the rated value, and the middle shell should be effective.
C. Edge resistance ≥ 1MΩ Dielectric strength: 2KV/1min.
2. The electric heating tube should be well positioned and flowed, and the effective heating area must be partially immersed in liquid or metal solid, and air burning is forbidden. When the tube body is found to be scaled or carbonized, it should be cleaned and reused in time to avoid affecting heat dissipation and prolonging its service life.
3. When heating fusible metals or solid nitrates, alkalis, leaching, paraffin, etc., the operating voltage should be lowered first, and then the voltage should be reduced to the rated voltage after the medium is melted.
4. When heating the gas, the components should be arranged crosswise and evenly, so that the components have heat dissipation conditions, so that the flowing gas can be fully heated.
5. Safety measures should be considered when heating nitrate to prevent explosion accidents.
6. The wiring part should be placed in the insulation layer to avoid contact with corrosive, explosive media and moisture; the lead wire should be able to withstand the temperature and heating of the wiring part for a long time, and excessive force should be avoided when the wiring screws are tightened.
7. The casting copper heating plate should be stored in a dry place. If the resistance is lower than 1MΩ due to long-term storage, it can be dried in an oven controlled by 200℃, or the voltage can be reduced and the electrical heating can be reduced until the resistance is restored.
8. The magnesium oxide powder at the outlet end of the electric heating tube is being used to avoid the infiltration of pollutants and moisture to prevent the outbreak of leakage accidents. Lower temperature wire, thermocouple, single metal thermometer, temperature control instrument.
