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High density cartridge heaters

Cartridge Heaters

cartridge heaters – Data Sheet

High density cartridge heaters high power and uniform heat distribution

Cartridge heaters in high density versions deliver a very high power relative to their size and provide uniform heat distribution across the element’s outer sheath. The cartridge heaters have high tolerance to vibration and impact and are made airtight which significantly increases their working life.

IHP sells cartridge heaters in all versions. The elements are typically used for heating tools i.e. heating of metal objects and mounted often in drilled holes. We design according to your demands regarding terminations, threads, plates, flanges, etc.

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Technical data
Heat intensity (high density) Up to 60W/cm²
Power Depends on dimension
Current leakage (cold state) <= 0,1mA at 242V
Working temperature Max 750°C
Tolerance length +/- 1,5%
Tolerance diameter -0,02 to -0,06mm H7
Tolerance connection length +/- 15mm
Power tolerance + 5% – 10%
Standard cold areas 5-25mm
Construction

IHP high density cartridge heaters are manufactured using a method where we compress all internally components with magnesium oxide to achieve a long life for all cartridges. A heating wire is spirally wound on to a hard ceramic cylinder which we call high density cartridge heater. Discs and ceramic heads are placed in both ends to isolate and protect the heater. The whole unit is sealed in a metal tube and the inside is packed in pure magnesium oxide to insure that everything is completely insulated. The cartridge heater is then compressed to the correct dimensions and tolerances.

Cartridge Heaters ConstructionCartridge Heater Drawing

  1. Welded water proof base to withstand pressure up to 60kg/cm²
  2. Calibrated stainless steel tube in AISI 304/316/321/INCOLOY
  3. Ceramic disc insulator
  4. Pure magnesium oxide
  5. Nickel-chrome 80/20 heater wire, melting point 1400°C
  6. Ceramic core
  7. Hard ceramic head
  8. Conductor lead
  9. Heat refracting paste

 

Application examples
  • Heating of tools
  • Heating of solids
  • Heating of fluids
  • Molds
  • Melting
  • Hardening
  • Vulcanization
  • Welding
  • Medical and laboratory equipment

 

Cartridge Heater screw nippelIHP high density cartridge heaters are made to withstand the toughest working conditions. Vibrations, moisture environments, direct fluid, frequent expansion and where temperatures between 400°C and 750°C are required.

When solids, gases and fluids are to be heated by electric energy the process is generally carried out by conduction. It is a proven method to quickly transmit heat by conduction if the cartridge heater is in direct contact with the piece to be heated (any solid, gas or fluid).

Cartridge Heater

Tube specification

For IHP standard cartridge heaters we mainly use stainless steel AISI 321 as tube sheath. We also provide stainless steel tubes in AISI 304, AISI 316 and Incoloy depending on the application.

DIN
X5 CrNi 169
X10 CrNiTi 185
X5 CrNiMo 182
Incoloy
AISI
304
321
316
Fe
>72
>72
>67
>6/10
C
<=0,07
<=0,07
<=0,07
<0,2
Cr
17/20
17/20
16,5/18,5
14/7
Ni+Co
9/11,5
9/11,5
12/14,6
82
Mn
<=2,0
<=2,0
<=1
Mo
2,5/3,0
Si
<=1,0
<=1,0
<=1,0
<=1,0
P
<=0,045
<=0,045
<=0,045
<=0,5
S
<=0,03
<=0,03
<=0,03
<=0,03
Cu
<0,2
<0,2
<0,7
Ti

Cartridge Heaters Cartridge Heater Wire

Heating wire Ni-Cr 80/20

The heating wire is the heating element itself. It is proven, strong and reliable and is typically used in many heating products.

Heating wire Ni-Cr 80/20
Specific weight
8.3
Thermic conductivity 20°C
0.35-0.0031
Specific heat 20°C
0.11
Melting point
1400°C
Resistance to traction
65-80
Elasticity limit
30-35
Brinell scale hardness
130-150
Lengthening in % over 200 mm of length
25-30%
Contraction in approximately %
60-75%
Maximum temperature of continuous working
1200°C
Specific existence 20°C Chmx (min. 2/m)
1,09 +/-5%
Expansion coefficient linear x 10-6
20-250°C = 15
20-1000°C = 18
Composition
Ni80 Cr20
Density g/cm3
835
Structure
Austenitic

Cartridge Heaters with High Density

IHP works together with many leading industrial companies in Europe. As a partner and supplier, we are known for our flexibility and our high quality products and services. IHP has a business valued model and creates successful long-term relationships.

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