In order to ensure the product performance of the electric tubular heater, Suwaie is very cautious in the selection of raw materials for production. The selection of temperature-resistant and corrosion-resistant pipes to electric resistance wires, magnesium oxide powder and sealing materials is strictly regulated. Here Huajiang technicians came to talk to you about how to use sealing materials in production. The function of the sealing material is to prevent the moisture in the atmosphere from entering the magnesium oxide powder from the nozzle, so that the magnesium oxide powder is damp, the insulation performance is lowered, and the electric heating tube is leaked and fails. The modified magnesium oxide powder may not be sealed. The materials used for the sealing of electric heating pipes (moisture proof) are mainly glass, epoxy resin, silicone oil and the like. In the electric heating tube sealed with silicone oil, after heating, the silicone oil in the nozzle portion is volatilized by heat, and the insulation of the electric heating tube is lowered. The temperature resistance of the epoxy resin material is not high, and it cannot be used in a high-temperature electric heating tube such as a grill or a microwave oven having a high nozzle temperature. Glass has a higher temperature resistance, but the price is higher, and more is used for the sealing of high temperature pipes. In addition, there are silicone tube, silicone sleeve, porcelain beads, plastic insulators and other components in the nozzle part, mainly to increase the electrical clearance and creepage distance between the lead rod and the metal wall of the nozzle. Silicone rubber acts as a filler and bond. The choice of each production material must be strictly in accordance with the regulations, in order to provide the best guarantee for the overall quality of the electric heating element.
There are several principles to follow the use of heater elements:
1. Fully understand the environment in which the electric heating tube is used, whether it is medium conduction or infrared radiation.
2. Fully understand the temperature requirements of the electric heating tube and select the electric heating tube of the appropriate power. Under normal circumstances, the power is large, the heating is fast, and the heating is fast, and vice versa.
3. Select the electric heating tube of the appropriate power and pay attention to the power load problem under the premise of ensuring the effective use temperature requirement.
4, dry burning electric heating pipe should pay special attention to the use of the environment's heat dissipation effect, divided into static air and flowing air.
5, water burning electric heating pipe should be strictly prohibited dry burning, especially the submerged electric heating tube.
6, fully understand the use of electric heating tube voltage, under normal circumstances, the voltage of the electric heating tube has 220V and 380V.
7. Fully understand the wiring method of the electric heating tube. There are usually star connection and delta connection. A single electric heating tube can be connected to 220V or 380V, and multiple electric heating tubes can be connected to 380V.