How to Select a Cartridge Heater Manufacturer
The heating coil of a cartridge heater is the part that contacts the material to be heated. Various metal alloys are used to construct the heating coil. The most common is a nickel-chromium alloy known as nichrome. The wire is wound around a ceramic core with varying number of spirals per inch. The alternating current source can be 2 phase or 3 phase and flows through the coiled nichrome wire to heat it.
A Good Heating Element Is Not Only Durable, But It Also Offers High Temperature Resistance
When selecting a cartridge heater manufacturer, the manufacturer should consider its operating temperature. The wires used for electrical connections should be made of a different material than lead wires, which are commonly used for high temperatures. The electrical termination should be designed to prevent the surrounding temperature from exceeding the safe limit for lead wires. Proper placement of the thermocouple in the heating element is important to ensure that the heater has a long life. Make sure that the heating element is not overheated.
A good heating element is not only durable, but it also offers high temperature resistance. A heater with a high watt density will last many years when used correctly. This is due to the fact that the material can be cooled with the help of a fan. Another important feature of a cartridge heater is the ability to fit the work piece. A heating element that is too large or small will seize the work piece. Therefore, the outside diameter of a heater must be larger than the inside diameter of the bore. In addition, the manufacturer will downsize the heating element by 0.002 to 0.05″ in order to make the product more cost-effective.