To maximize surface contact, our belt heaters are carefully rounded and shaped to optimize your grip. The outer metal protective jacket of our belt heaters is made of a special alloy that expands less when heated than the barrel. This difference in thermal expansion causes the heater to grip firmly as soon as it is energized. This improves heat transfer, which extends the life of the heater. The construction of a standard mica band heater consists of resistance wire that is wound at an even distance over a flexible mica insulator to form the inside of the element. This is covered on each side with additional mica insulation and installed in an outer metal housing before the assembly forms to the desired diameter.
Whether mold defects or machine downtime, only when a problem occurs, the belt heating becomes an important facet of machine production. The construction of a mica band heater is carried out with high-quality resistance wire, micanite plates and a high-temperature treated stainless steel housing. The belt heater withstands temporary maximum temperatures of up to 350°C, has an even heat distribution and is shock-resistant. A common case where this type of heating is useful is when an engineer needs to heat the surface of a pipe or pipe.
Instead, it is often environmental factors that cause a short circuit, create hot spots, or simply push the heater beyond its normal operating temperature. All these factors cause a heater to fail prematurely and need to be replaced. Of course, minimizing these environmental factors can reduce the frequency of replacing belt heaters in your operation. These heaters are used for plastic molds, extrusion and molding presses, pipe heating, heat treatment and autoclaves, food industry and much more. Our warranty for custom-made heating tapes extends over a period of 12 months from the date of purchase and covers failures due to defects in materials or workmanship. Ceramic elements are thicker in construction, but offer a wattage of 5.5 W/cm² and an operating temperature of up to 600°C.
If a “standby” function is available, you can mark a second lower setpoint. If the machine is expected to be off for more than 30 minutes, this feature is used to prevent the material from burning without turning off the heaters completely. •The percentage of power that the controller delivers to the heating tape. For example, if this value is 40%, the heating tape is on for 4 s and then turned off for 6 s. The controller uses the value that suits you best to keep the heating tape at the setpoint. This is regulated by the so-called PID loop and all controllers use some form of this control program.
If a tape cannot be installed above the barrel end of a machine without stretching the heater, use a heater that is more suitable for the application, e.B. A two-piece design is also a good choice when a large-diameter tape is required: the two-piece design minimizes the possibility of developing airspace. Two-piece ceramic tapes can also be used on large diameter barrels. A mineral-insulated tape provides the highest temperature capabilities.
The wires are joined before the final outer sleeves are connected to complete the heating. Our Mica Band heaters can be installed directly on drum heaters without the need for initial heating fuel extraction. Push the heater through the low thermal expansion outer shell until the jagged edges are firmly secured with the cylinder. Do not squeeze too tightly to prevent the jagged edges from collapsing and protruding outwards.
Open coil heaters can be used as cartridge heaters in irregularly sized holes. Backer Marathon belt heaters are designed and manufactured by the computer to your specifications. Only the highest quality materials are used for optimal performance. We have a wide range of heaters for same-day shipping, we offer a three-day accelerated service for custom designs and there is never a minimum requirement. We have a wide range of heaters on the shelf that are available for same day shipping.
A longer soaking time does not harm the process, but too short a soaking time can. Use 30 minutes for the extruder and 15 minutes for the hot runner. If a “standby” function is available, you can mark a second, lower setpoint. If the machine is expected to be off for more than 30 minutes, this feature Industrial Band Heater Manufacturer is used to prevent the material from burning without turning off the heaters. Heat the plastic in the three screw areas feed, transition and measurement. The heating of the feeding zone is located directly behind the nozzle and consists of the first third of the total length of the boiler.