Electric iron（5）

Technical characteristics of mica board: mica board can withstand high temperature of 600 ℃. The insulation resistance is greater than 100mω. The thickness is thin. Small size and high power. It can be designed into various shapes conveniently and easily according to needs, and the cost is low. Applications: such as rice cookers, microwave ovens, electronic disinfection cabinets, hair dryers, electric irons, etc. such as plastic machines, copiers, printers, fax machines, etc. Various industrial and agricultural heating occasions, such as mold heating, plastic machinery, and other heating and drying devices.

The important thing in an electric iron is the electric heating element. The production process of the open-type sheet electric heating element is simple. Usually, the heating wire is wound on the mica sheet support, and then covered with the mica sheet. This kind of component is low in price, but has a short service life. It is mainly used in earlier electric irons and has been seldom used. The closed tubular heating element is a closed electric heating element, which is usually made by putting an electric heating wire into a metal tube filled with crystalline magnesium oxide powder. If the electric heating tube is cast in alloy aluminum, it becomes an integrated heating plate. This kind of electric heating element has the characteristics of closed and fixed, impact resistance and vibration resistance, good electrical safety performance and long service life under high temperature working conditions. Note that electric irons with open sheet heating elements generally have a pressure plate fixed on the heating element and the asbestos insulation board to fully concentrate the heat on the bottom plate and improve thermal efficiency. If the heating element is directly cast into the bottom plate, there is no need to set the pressure plate. The thermostat uses an electric iron to iron clothes. If the temperature is too high, the clothes will be damaged, and if the temperature is too low, the effect will be poor. Moreover, for different clothing materials, the temperature required for ironing is different, so most electric irons use automatic temperature control devices. The temperature controller generally adopts bimetallic type temperature regulation. The bimetallic plate is installed on the upper or lower part of the electric heating plate, with an adjustment knob, which is generally divided into six levels, and the adjustment range is 60℃-240℃.