Classification Of Band Heating Element
Stainless steel ceramic band heater
The high temperature resistant ceramic band heater is not made by the general mica wire bending method, but by the ceramic wire threading method, so the power of the product is 0.5 to 1.5 times higher than the ordinary one. The heating element is made of imported round wire ceramic, which is bent into a spring shape and penetrated into a ceramic ring. The outer cover is made of Japanese stainless steel, and the middle is made of high-temperature thermal insulation cotton (aluminum silicate fiberboard) to prevent temperature leakage. Ceramic strips are high-frequency ceramics that have the characteristics of fast heat transfer, hard and not fragile, high-temperature non-deformation and non-aging. Brief performance of ceramic band heater: It is mainly suitable for extrusion, casting and under-punching machinery. The operating temperature can reach 450 degrees, and the maximum surface load is 6.5W/cm. It is characterized by long life and high temperature resistance, energy consumption reduced by 30%, and high insulation. , The most suitable electric heating products for extruders, injection molding machines and film blowing machines. Ceramic band heaters have the advantages of convenient installation, fast heat transfer, and good insulation. The production is not limited by model and size. High working temperature, fast heating, high thermal efficiency, no pollution, uniform and precise heating. The specific advantages are as follows: 1. It has winding properties. For example, when heating containers or pipes, it can be bent into an arc or circle and covered on the surface for heating. For heating large workpieces, partial wrapping can be adopted, and large-area workpieces can be tiled. Cover form. In addition, it is suitable for heating various geometric shapes of workpieces. 2. High working temperature, fast heating, high thermal efficiency, no pollution, uniform and precise heating, and automatic control can be realized. 3. High mechanical strength, good thermal insulation performance, large contact surface with the heated object, and long service life. 4. It is convenient to install and maintain, and the use cost is low. Even if the internal heating material is damaged, the external ceramic components can still be reused.
Stainless steel mica band heater
The mica band heater is made of high-quality nickel-chromium alloy heating wire as the heating element, and natural mica is used as the insulating layer. The outer layer is made of high-quality stainless steel as the conductive heating layer. The mica band heater can be machined according to customer needs. Formed rings, plates, and various special-shaped products. The surface of the mica band heater normally conforms to 2.5-3 watts per square centimeter. Customers should adopt an automatic temperature control system according to the required power range to maintain normal power and protect the service life of the band heater. The performance advantages of stainless steel mica electric band heater: Because the product uses stainless steel and mica as raw materials, it is not limited by the size of the specification. It can be used for small-size heating for nozzles and for heating on plastic machine barrels. It has the characteristics of reasonable structure, beautiful appearance, stable performance, uniform heating, fast heat dissipation, long service life, good insulation performance, and high pressure resistance. Stainless steel mica band heater application range: widely used in injection molding machines, extruders and other plastic molding machinery.
Cast aluminum band heater
Cast aluminum band heater can be divided into die casting and casting casting. In the occasions with more specifications and sizes, the casting process is generally used. High-purity aluminum blocks are used in casting production, which are changed from solid to liquid in a high-temperature furnace, and then injected into a mold that has a heating tube installed, after cooling and forming, and then finishing. The normal thickness of the cast aluminum band heater is 20mm and 25mm. The inner wall of the 25mm wall thickness of the band heater adopts a concave-convex air groove structure design. The purpose is to prevent the internal heating tube from overheating during use. For example, the inner wall can be used when the temperature is high. Air cooling or water cooling is used to make it reach the standard temperature quickly. At the same time, the band heater is basically divided into half of the circle to make two semicircles, and then fixed and installed by fixing bolts. The temperature measurement air is mainly used in the occasions that need to collect temperature signals. Usually, the arc surface of the cast aluminum band heater is opened according to its design size for the installation of thermocouples.
