Origin of single-head electric heating tube: (single head) or (bullet) electric heating tube (Cartridge Heaters), in China's electric heating industry, there is a model called M3 for a long time. In the late 1990s, due to the wide application of electric heating tubes in China, there are many shapes of electric heating tubes. In southern China, this kind of electric heating tube for a mold with one outlet is called a single-ended electric heating tube, which is very vivid. In foreign countries, it is called a cartridge heater, which is also an image name, because the cartridge case is cylindrical, and one end is blocked.
Application range of single head electric heating tube:
1. Mold heating has been accepted by a wide range of customers in modern industrial applications.
2, in the plastic machinery heating system.
3. Pharmaceutical production line.
4. Laboratory heat treatment test.
5. Chemical industry, etc.
The advantages of single head electric heating tube:
1. The diameter is small, which can be 3-25MM.
2. The length is not limited, it can be 20-2000MM.
3. High power, it can be done (surface area 20 watts/square centimeter), and it can even be done abroad (surface area 60 watts/square centimeter).
Performance requirements of single-head electric heating pipe:
1 heating time
Under the test voltage, the time for the component to rise from the ambient temperature to the test temperature should not exceed 15min
2 Rated power deviation
Under the condition of sufficient heating, the deviation of the rated power of the components should not exceed the following specified ranges;
For components with rated power less than or equal to 100W: ±10%.
For components with rated power greater than 100W, it is +5% to -10% or 10W, whichever is greater.
3 Leakage current
Cold state leakage current and leakage current after water pressure and sealing test shall not exceed 0.5mA
The thermal leakage current at the operating temperature should not exceed the calculated value in the formula, but the maximum should not exceed 5mA
I=1/6 (tT×0.00001)
I—thermal leakage current mA
t—heating length mm
T-operating temperature °C
When multiple components are connected in series to the power supply, the leakage current test shall be carried out with this group of components as a whole.
4 Insulation resistance
Insulation resistance in cold state should not be less than 50MΩ during ex-factory inspection
After the sealing test, the insulation resistance after long-term storage or use should not be less than MΩ.
The thermal insulation resistance at working temperature should not be lower than the calculated value in the formula, but the minimum should not be less than 1MΩ
R=“(10-0.015T)/t”×0.001
R—thermal insulation resistance MΩ
t—heating length mm
T - working temperature °C
5 Dielectric strength
The components should be kept under the specified test conditions and test voltage for 1min without flashover and breakdown
6 Ability to withstand switching on and off
The components should be able to undergo 2000 on-off tests under the specified test conditions without damage
7 Overload capability
The component shall withstand 30 cycles of overload test under the specified test conditions and input power without damage
8 Heat resistance
The components should withstand 1000 cycles of heat resistance tests under the specified test conditions and test voltages without damage
(This product can be customized according to customer requirements, providing drawings, voltage, power, size)
