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Cartridge heaters

Cartridge heaters are intended for heating solids. Most often they work in holes of metal parts, but they can also be used to heat liquids and gases. These are elements with a special construction that allows the emission of large amounts of heat from small areas.



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Industry 


Food industry (molds)

Chemical industry

Wood industry

Footwear industry

Plastic industry
(molds, injection molding machines, stamps)

Automotive industry
(injection molding machines, molds)

Railway industry

Furniture industry (edge banding machines, glue stations)

Characteristics

  • Max power: up to 25 W / cm2*
  • Voltage: any, according to the customer's order
  • Diameter: ø 4-60 mm*
  • Length: 25-3500 mm*
  • Heater covering material: AISI 304; AISI 321

* These values (parameters) are examples and do not constitute an offer within the meaning of art. 66 of the Civil 

Code. Each heater is designed individually.

 

Technology 

Cartridge heaters, thanks to forging technology, achieve high power in relation to the surface. Forging increases the density of magnesium oxide, which improves the parameters of the heaters.

Raw materials
Raw materials used in the production of patron heaters:

  • magnesium oxide of the highest purity
  • High-quality nickel-chromium resistance wires
  • cables in temperature class 260°C or 350°C
  • Stainless steel pipes and rods in AISI 304 grade AISI 304

Technological processes 

Cutting the pipe

Winding of resistance wire

Backfilling the heating

Welding the bottom covering
the pipe

Chucking/Rolling

Size grinding

Sealing

Current connections

General structure

Cartridge heaters are made of stainless steel AISI 304 and are terminated by a tightly welded bottom. By using the highest quality materials, the products are characterized by high precision and maximum durability. Production in H7 fitting enables operation at temperatures up to 550° C, and the temperature sensor allows to achieve a precisely defined temperature.



Types of heaters

NAME TYPE MODEL ILLUSTRATION

Cables routed
directly
from the
heater

Typ A

Rods derived directly
from the heater

Typ B

Cables routed
directly from
the side of the
heater

Typ C

 Corner heater
connected with
ankle

Typ D

Angle heater
connected with
a sleeve

Typ E

Heater with threaded
sleeve (dimensions and
location according
to the customer's order)

Typ F

Single pole lead-out
(low voltage only)

Typ T5

Current output in the
form of a unipolar
screw (only for low
voltages)

Typ T5

Straight heater with
limiting / clamping
flange

Typ T7

Straight heater with
a welded mounting
bracket

Typ T8

Bent cartridge
heater 

Typ T9



Current outputs

- PTFE sheathed cables





- Fiberglass braided cables





- Wires in fiberglass sheath





- Wires in the protective tube




-  Steel braided cables



Heating zones - power distribution 

There is a possibility of making cartridge heaters with different power distribution. Appropriate distribution of heating power density on the surface of the element allows temperature control. This technology is used to eliminate heat loss at the ends of the heaters or to heat selected mold zones.


 Temperature sensors

In cartridge heaters there is a possibility of using a temperature sensor:

  • Thermocouple type J (up to 650°C)
  • Thermocouple type K (up to 1000°C)
  • Pt-100 sensor (up to 550°C)





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