Heating precautions for heating plates (cast copper)

Heating precautions for heating plates (cast copper)

1. When heating fusible metals or solid nitrates, alkalis, slurries, paraffin, etc., the operating voltage should be lowered first, and only after the medium melts can it be lowered to the rated voltage.

2. When heating nitrate, safety measures should be considered to prevent explosion accidents.

3. The cast copper heating plate is allowed to operate under the following conditions: A. The relative dryness of the atmosphere is not greater than 95%, and there is no explosive or corrosive gas. B. The task voltage should not exceed 1.1 times the rated value, and the middle shell should be effectively grounded. C. Edge resistance ≥ 1M Ω Dielectric strength: 2KV/1min.

4. When heating the atmosphere, the components should be evenly arranged and crossed to provide excellent heat dissipation conditions and allow the flowing atmosphere to heat abundantly.

5. Electric heating tubes should be well positioned for flow, and the effective heating area must be partially immersed in liquid or metal solids, and air burning is strictly prohibited. When it is found that there may be scale or carbon deposits on the pipe body, it should be promptly removed and reused to avoid affecting heat dissipation and prolonging its service life.

6. The copper heating plate should be stored in a dry place. If it is durable and the edge resistance is less than 1M Ω, it can be dried in an oven controlled at 200 ℃ or heated by reducing the voltage until the edge resistance is restored.

7. The wiring part should be placed inside the insulation layer to avoid contact with corrosive, explosive media, and moisture; The lead wire should be able to withstand the temperature and heating back load of the wiring section in a durable manner. When tightening the wiring screws, excessive force should be avoided.

8. The magnesium oxide powder at the outlet of the electric heating tube is being used to avoid the infiltration of pollutants and moisture, in order to prevent the occurrence of leakage accidents. Lower temperature line, thermocouple, single metal thermometer, temperature control instrument.

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