Pressed in Brass Coil Hot Runner Heater

Plastic Injection Molding Nozzles Coil Brass Heater

Coil heaters are commonly used for nozzle heating on hot runner systems in the plastic industry but also used for the packaging industry etc. Coil heaters are manufactured in round, square or rectangular section to guarantee the greatest thermal exchange keeping an excellent efficiency and a good reliability.

Production Description

Structure :

Pressed in brass coil heater, the coil heater is designed to beset in the brass sheating, can eliminate known problems associated with the casting process.

Characteristics:

• The machined path in the brass for the heater enables exact repeatability of heat profile. By never exposing the coil heater to molten brass there are no risks of shifted heater coils, or destruction of the thermocouple junction.

• Flexible design options include internal, external "wound in" or external slotted type J or type K thermocouples.

For OEM application, HT Elite can customize the brass sheathing upon request.
 

Parameter

Heater Sheath: CrNi Steel

High Voltage Stability: 800VAC

Insulation Resistance: >= 5M ohm at 500 VDC (Cold)

Wattage Tolerance: +/- 2%, +/- 4%, or +/-10%

Maximum Voltage: 230V

Leakage Current: <= 0.5 mA at 250VAC (Cold)

 

 APPLICATIONS

• Plastic injection molding nozzles

• Restaurant and food processing equipment

• Sealing and cutting bars

• Semiconductor manufacturing and wafer processing

• Textile manufacturing
   

 FEATURES

• Operation temperature up to 750°C (1300°F)

• Optional built-in thermocouple for temperature measuring (Type J or K )

• 10 different cross sections are available to fulfil any requirement (square: 3.2 x 3.2mm,3.5 x 3.5mm,4 x 4mm, rectangular: 4.2 x 2.2mm,4.2 x 2.5mm, round: Φ3.8mm,Φ4.0mm,Φ4.2mm,Φ4.4mm,Φ4.6mm or other customizable)

• Coil heaters can be incorporated into cast bronze
   

 TECHNICAL SPECIFICATION

• Wattage tolerance: ±10%

• Resistance tolerance: ±10%

• Dielectric strength (cold condition): 800V

• Insulation: 5MΩ

• Max working temperature allowed on sheath:750°C (1300°F)
   

 LEAD WIRE

• Standard length:1meter

• ptfe insulated leads

• Lead protection terminations: SS braid or glass silk protective sleeve or inside glass fiber and outside silicone rubber tube.

• Optional 2-5 wire, 2-wire: 2 heater wire; 3-wire: 2 heater wire + 1 earth wire; 4-wire: 2 heater wire + 2 thermocouple wire; 5-wire: 2 heater wire + 2 thermocouple wire + 1 earth wire
   

 LEAD ORIENTATIONS

 PLEASE SPECIFY THE FOLLOWING WHEN ORDERING

1. Internal Diameter, Width and Cold Zone are required.

2. Voltage and Wattage.

3. Cycles

4. Cross section

5. The type (K or J) of the thermocouple  if required
    

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