At present, cast aluminum electric heater is one of the ideal heaters at home and abroad.
The cast aluminum heater is a tubular electric heating element as a heating element, and is bent and formed into a mold. The high-quality metal alloy material is used as a shell to be centrifugally cast into various shapes, and has a round shape, a flat plate, a right angle type, an air cooling, a water cooling and the like. After the special shape is finished, it can be closely attached to the heated body. When the surface load of the cast aluminum heater can reach 2.5-4.5w / cm2, the maximum working temperature is between 300-450 °C; the surface load of the cast copper heater can be When reaching 3.5-5.0w / cm2, the maximum working temperature is between 500-600 °C; when the surface load of cast iron heater can reach 4.5-6.0w / cm2, the maximum working temperature is 550-700 °C. Efficient heat splitting uniform heater, excellent thermal conductivity metal alloy ensures uniform hot surface temperature and eliminates hot spots and cold spots in the equipment. It has long life, good thermal insulation performance, strong mechanical properties, corrosion resistance and magnetic field resistance. The external heat dissipating surface is added to the heat preservation device, and the inner heat dissipating surface is sintered with infrared rays, thereby saving 35% of electricity consumption.
Cast aluminum heaters are currently one of the ideal heaters at home and abroad. The insulation layer can be added outside the heater according to the user's requirements, and the thermal efficiency is higher, which can save about 20% of electricity consumption. With the widespread use, there are more and more problems in use.
First: the phenomenon of aluminum melting in the use of cast aluminum heaters
Analysis: This phenomenon is definitely the use of temperature over temperature. The normal cast aluminum heater operating temperature is 10-350 degrees, and the melting point is between 500-600. The phenomenon of melting is definitely the use of overheating of the internal heating element, which causes the external aluminum to melt. The temperature is usually 1, the temperature sensor is not accurate, 2, the temperature controller is out of control.
Therefore, it is preferred to check the temperature control equipment when aluminum is melted during use.
Second, the cast aluminum heater is energized without heating.
Analysis: Usually, the cast aluminum heater is energized without heating. There are two kinds of cases. 1. There is dust inside the insulating cap of the binding post, and the heating wire is broken.
The troubleshooting is very simple: first clean the inside of the insulating cap of the binding post, and then measure the resistance. If there is still no resistance, then the heating wire is broken.