Electrical Spring Nozzle Heaters Heating Elements
Product Description
1. Coil Heater Working Principle
Electric Coil heater, also known as cable heater, convert electricity into heat through the process of Joule heating. Electrical current running through the element encounters resistance, resulting in heating of the element.
2. Coil Heater Structure
The main features of these heaters are 360o heated area, readily confirms to surface, fast response and quick heat transfer, helical coil design for superior performance, good resistance to corrosion and it can easily be coupled with J or K type thermocouple.
The integration of temperature thermocouple for the precise temperature control. It also provides the best combination of physical strength, high emissivity and good thermal conductivity to heat hot runner bushings and nozzles.
Product Parameters
3. Coil Heater Parameter
| Voltage |
220V,230V,240V |
| Power tolerance 115W-200W |
+/-10% |
| Power tolerance 201W-2000W |
+5%-10% |
| Out jacket length |
30mm~280mm |
| Diameter of the inner sleeve/wrapped diameter |
10mm~42mm |
| Unheating length |
45mm |
| Max power density |
9W/cm² |
| Heating Length tolerance |
+/-0.05mm |
| Unheating length tolerance |
+/-2.5% |
| Tolerance ID d ≤20mm |
Without inner sleeve:-0.15mm
With inner sleeve:0.05mm~0.10mm |
| Tolerance ID d 20mm~30mm |
Without inner sleeve:-0.20mm
With inner sleeve:0.05mm~0.10mm |
| Tolerance ID d ≥30mm |
Without inner sleeve:-0.25mm
With inner sleeve:0.05mm~0.10mm |
| Tolerance cross section |
+/-0.15mm |
+/-0.20mm |
| Thermocouple |
K,J,E |
None |
| Material |
304,321,316 |
| Maximum working temperature |
650ºC |
| Die electrical strength |
800V |
1000V |
4. Coil Heater Imported Raw Materials
a. The coil heater resistance is used German Nickel Chrome wire, can be coiled and straight.
b. The insulation material magnesium oxide powder is imported from USA; which ensures the high performance, fast response time and good unformity.
5. Surface Treatment
Blasting and blackening surface treatment, also can provide bright surface.
6. Termination:
7. Coil Heater Cross Section
Based on specific requirements and applications, coil heaters are manufactured in different cross sections. Each one is having its own advantages and disadvantages. Basically there are three types of coil heaters. They are
| Coil Heater Cross Section |
| Round Coil Heater Diamater |
Φ3.0, Φ4.0,Φ5.0 |
| Square Coil Heater Diamater |
3.0×3.0, 3.3×3.3, 3.5×3.5, 4.0×4.0, 5.0×5.0 |
| Rectangular Coil Heater Diamater |
4.0×2.0, 4.2×2.2, 4.5×2.7 |
Cross section 4.2*2.2mm
Cross section 3.3*3.3mm
8. Reference Photos
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