Use of cast iron heater and precautions for its use

The manufacturing process of cast iron heater: high-temperature electric heating coil heating, cast iron prepared tube bent into the required. In the mold ready for forming, casting with molten iron, then grinding, smoothing and finishing, and finally getting the finished product.

The cast iron heater is a tubular heating element, which is used as a heating element. The components are bent and molded into the mold, and are cast into various shapes by centrifugal casting. They are round, flat, rectangular, air-cooled, water cooled and other specialties. After finishing, it can be tightly bonded with the heated body. The surface load can reach 3-4.5w/cm5. It has the advantages of fast heating, uniform heating, good thermal conductivity and long service life.

This product is one of the ideal heaters at home and abroad. The heater is to cast iron tubular electric heating element for heating body, using high quality materials for iron casting shell by electric heater, the temperature in 150 degrees Celsius to 450 degrees. Can be widely used in plastic machinery, die head, cable machinery, chemical, rubber, oil and other equipment.

Cautions for the use of cast iron electric heaters:

The working voltage should not exceed 10% of the rated value; the air relative humidity is not more than 95%, no explosive and corrosive gas.

The wiring part is placed outside the heating layer and the thermal insulation layer. The shell should be effectively grounded. Avoid contact with corrosive, explosive medium and water. The lead wire should be able to withstand the temperature and heating load of the wiring part for a long time, and avoid excessive force when fastening the wiring screws.

The metal casting heater should be placed in the dry place. If it is placed for a long time and the insulation resistance is less than 1M ohma, it can be baked for 5-6 hours in the oven around 200 degrees Celsius, and it will return to normal. Or reduce the voltage through the electric heating until the insulation resistance is restored.

The metal casting heater should be fixed and fixed. The effective heating area must close closely with the heat receiving body and strictly prohibit the air burning. It is found that the surface has dust or contaminants, should be cleaned and then, to avoid affecting heat and shorten the service life.

Magnesium oxide electric heating pipe outlet, used in place to avoid contamination and water infiltration, prevent the occurrence of leakage accident.