Hyperthermal heating element boom struck

In 2003, the electric heating giant Kanthal AB introduced five new Kanthal superheating elements for kiln heating systems. The superheating heating element is different from the conventional heating element and is a new type of element specially designed for extremely high temperature applications. Since then, the trend of research and development of hot-water heating elements has escalated. Some domestic electric companies are not to be outdone, and they are trying their best to innovate and hope to use new technology and new products to overcome the invasion of foreign capital, so as to stabilize the domestic electric market share. However, we have to realize that technical barriers to thermionic components are still one of the difficulties that domestic manufacturers have yet to overcome. In general, the maximum operating temperature of the heating element is usually less than 500 degrees. After exceeding 500 degrees, the life is extremely short. So far, more than 500 degrees of electric heating elements, can guarantee the service life only Shanghai Shanglong Electric Co., Ltd. and Shanghai Dege Electric Co., Ltd. and other manufacturers. We should recognize that advanced manufacturing processes require not only financial support but also a large number of scientific and technological talents. As the high-end technology is still in the hands of a few foreign electric heating manufacturers, domestic electric colleagues need to continue their efforts to tackle the problem, so as to obtain a share of the big cheese in the electric market.

Below, the author will briefly introduce the classification of heating elements.

Heating elements have a wide range of applications in industry and home. When the current passes through the conductor, it heats the conductor and generates heat. The heat generated by this current is called electric heat. We can use electrothermal theory to make a variety of electric heaters, such as electric iron, electric oven, water heater, electric incubator, electric stove, electric iron and so on.

In the China Manufacturing Network product catalog, electric heating equipment is divided into the following sub-categories:

Electric heater electric heating coil, electric heating plate electric heating tube, heating electric heating wire, electric heating wire other electric heating equipment thermal resistance thermocouple The above classification is mainly based on the classification of electric heating products. If it is subdivided by its shape, the market now has flanged tubes, shaped heaters, flammable and explosive heating tubes, heavy oil heaters, straight heating tubes, U-shaped heating tubes, W-shaped heating tubes, spiral heating Appliances and other products are widely used. According to the different conductors and temperatures, Baidu Encyclopedia is divided into the following types:

According to conductors:

Metal heating wire type heating element (0-700 degrees) PTC type heating element (self-limit temperature, self-control temperature)
Electrothermal film type heating element (metal type and spray type)


According to the temperature difference is divided into:

Low-temperature type (up to 100 degrees, commonly used for liquid heating, such as water)
Medium temperature type (100-500 degrees, commonly used in electric furnace, baking equipment)
High-temperature type (500 degrees to -1100 degrees is commonly used in high-temperature furnaces, ultra-high temperature type (1100-1300 degrees, often used in test equipment, heating furnaces for special occasions)

Although domestic manufacturers still face various technical difficulties, we should recognize our achievements in recent years. In the boom of hyperthermia heating elements, many small and medium-sized enterprises have also emerged, constantly improving the quality of their own products, and moving further and further away on the road to technological solutions. For example, the technology of domestic metal heating wire type electric heating elements has reached international standards, which has brought a lot of foreign exchange earnings to China.