What are the heating elements? Introduction to common heating elements!

The heating element mainly includes metal heating element and non-metal heating element. "Metal" material heating element. Among them, red copper has good plasticity and good thermal conductivity. The seamless air-conditioning copper tube made of it can effectively prevent water seepage. However, due to the high price of red copper, most companies use stainless steel as the liner and heating element due to cost considerations. The biggest advantage of stainless steel heating element is that it is cheap and heats quickly, but it is easy to attach dirt. Non-metallic heating element. The main non-metallic heating elements on the market are made of amethyst, quartz, laminated glass, porcelain and other related materials. A layer of heating material is attached to the surface made of non-metallic materials by high-temperature sintering, wiping at room temperature or printing. Crystal heating elements were once favored by manufacturers and consumers. However, because amethyst is a natural rare mineral, it is relatively expensive, and the production and manufacturing process is difficult, so it is unlikely to be widely used in industrial production. At present, most of the quartz glass tubes are used to replace amethyst on the market.
There are generally three common types of continuous high-temperature heating elements: silicon carbon rods, silicon molybdenum rods, and lanthanum chromate. Zirconia ceramic continuous high temperature heating element is a heating element that can be used in heating furnaces with oxidizing atmospheres above 1800℃. It can be used in high temperature melting processing of quartz glass tubes, high temperature sintering of metal oxide materials, continuous high temperature crystallization quenching and continuous high temperature crystal growth equipment. According to the heating equipment installation structure, working atmosphere and ambient temperature, the correct selection of the surface load of the electric heating material is the key to the service life of the silicon carbon rod electric heating material.
PTC heating element is also called PTC electric heater, which is composed of PTC ceramic heating element and aluminum alloy tube. This type of PTC heating element has the advantages of low thermal conductivity and high heat transfer efficiency. It is an automatic temperature control and energy-saving electric heating device. The significant feature lies in the safety factor. Under all conditions of use, it will not cause the "reddening" of the surface of the electric heater such as the heating tube, thereby causing burns, fire accidents and other safety risks. The PTC heating element is composed of hot-dip galvanized outer pins, stainless steel corrugated springs, hot-dip galvanized inner pins, single-sided aluminum heat sinks, PTC heating sheets, two-layer aluminum heat sinks, electroplated nickel-copper electrode terminals and PPS continuous high temperature plastic grade wire sheaths.