Hot Runner Flat Coil Heater Heating Elements for Injection Molding Machine
1. Coil Heater Working Principle
Flat coil heater are designed to the standard with respect to precise fit and profiling to optimize the performance of nozzles and other mating components.
They accommodate type "J" or "K" type thermocouple that could be placed internally at the tip or the middle of a heater.
They can be made as well to have profiled or distributed wattage configuration.
2 . Advantages
- Flexible cold section
- Higher watt density than a cable heater
- Sealed transition head for moisture resistant applications available
- Resistance wire centered for more repeatable heat profile
- Outside sheath to improve heating efficiency
- Temperatures up to 1800°F (982°C)
- Precise temperature control
- Built-in type J or K Thermocouple
- Rugged, durable construction
- Unheated straight section
- Choice of lead protection
- Made to customer specifications
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. Coiling Option:
Cylindrical Flat Coiling Conical coiling
Exit Options:
Tangential Axial Radial
6. Termination:
Plain leads with high temperature sleeve
High temperature lead wire with a fiberglass jacket exiting from a transition bracket, which sealed with high temperature cement.
Stainless steel braided
The stainless steel braid, provides abrasion resistance and maintains high flexibility.
7. Photos for reference
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