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.

Industry
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  • 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
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  • 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
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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
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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
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  • 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
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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
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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
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– PTFE sheathed cables

– Fiberglass braided cables

– Wires in fiberglass sheath

– Wires in the protective tube

–  Steel braided cables

Heating zones - power distribution
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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
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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)