Cartridge heaters : Cartridge heaters

Back

Wróć do: Cartridge heaters

Cartridge heaters (another name: cartridge, "finger heater") are elements with a special design that allows the emission of a large amount of heat from a small area (maximum load 40W/cm²!). They are most often used for heating metal molds, tooling, etc. They are designed to work in difficult conditions, such as: vibrations, shocks, moisture, heavy liquids, frequent overloads. They are used where the working temperature is required within 400 - 750 ° C.

Technical data

Heat intensity	to 40W/cm²
Power [W]	depends on the dimension
Exhaust extreme	<= 0,1mA do 242V
Insulation	min. 5 MOhm/500V
Dielectric strength	1500V/1sek.
Maximum working temperature	650°C
Length tolerance	+/-1.5%
Diameter tolerance	H7 (od -0,02 do -0,06mm)
Power tolerance	+5% -10%
Cold zone	Depends on length and diameter, from 5 to 15mm

Applications

Applications
- plastics industry	- paper products industry
- wood industry	- foundry industry
- medical equipment	- rubber industry
- automotive industry	- footwear industry
- aviation industry	- laboratory devices

Technical drawings

Fully welded bottom (TIG). Durability up to 60kg/cm²
Heater cover is made of stainless steel AISI 304, 321, Incoloy800
Ceramic disc insulator
Pure grain sized magnesium oxide
Nickel-chromium 80/20 heating wire
ceramic core
Hard ceramic head
high temperature connection cables
additional curing paste

The unique production system in Termik company performs perfectly accurate winding and together with the electronic system for measuring the spacing between the coils of the spiral guarantees an even distribution of temperature over the entire length of the cartridge heater.

When ordering, please specify:

power [W]
voltage [V]
diameter [mm]
length [mm]
Ending
length of leads
quantity [pcs]

Order example:
Cartridge heater 630W / 230V / 12,5D / 160L / T1 / leads L-500mm – 12 pcs

Endings

Standard connection terminated tightly protecting the hard ceramic paste resistant to high temperatures.

Connection ended with a protruding ceramic form for a distance of 3-6mm (depending on the diameter). It prevents the leads from coming into contact with the element housing and ensures more stable cable routing.

Connection finished with a porcelain connection block. Used with frequent change of power cables.

Threaded connection made of stainless steel. Used with frequent change of power cables.

Unipolar connection (cable), having one electric pole. Used at low voltages of 12-48V.

Unipolar connection (thread), having one electric pole. Used at voltages of 12-48V.

Flanged connection made of stainless steel. Perfect for rigid fixing of the heating element. It works well during vibrations and excessive movements during work.

Diameter [mm]	6,5 (1/4'')	8 (5/16'')	10 (3/8'')	12,5 (1/2'')	16 (5/8'')	20 (3/4'')	25 (1'')
A [mm]	18	18	27	27	33	33	41
B [mm]	13	13	20	20	25,6	25,6	33
C [mm]	3,2	3,2	3,2	3,2	4,2	4,2	5,2
D [mm]	1	1	1	1	1,5	1,5	2

T7b

Connection with a small size flange made of stainless steel. Ideal for rigidly fixing the heating element in places where space is limited. It works well during vibrations and excessive movements during work.

Diameter [mm]	6,5 (1/4'')	8 (5/16'')	10 (3/8'')	12,5 (1/2'')	16 (5/8'')	20 (3/4'')
A [mm]	6,5	8	9,5	10	12	18
B [mm]	9,75	13	14	16,25	19	23
C [mm]	6,5	9	9	10	11	13
D [mm]	3,2	4,2	4,2	5,2	5,2	6,2
E [mm]	2	2	2	2	2	2

Watertight connection with threaded bush made of stainless steel. Heating element mounted by screwing into the hole. Ideal for applications where there is internal pressure during operation (oil, water, adhesive and plastic tanks).

Diameter [mm]	6,5 (1/4'')	8 (5/16'')	10 (3/8'')	12,5 (1/2'')	16 (5/8'')	20 (3/4'')
A [mm]	12	14	17	19	24	27
B [mm]	10	10	12	12	14	14
C [mm]	4	4	4	4	4	4
Gwint	M10	M12	M14	M16	M20	M26
Gwint	1/8''	1/4''	1/4''	3/8''	1/2''	3/4''

Angular connection made entirely of stainless steel. The housing is waterproof and additionally reinforced steel wire braid. Designed for use in harsh conditions (cable jerks, high temperature, material leaks).

Diameter [mm]	6,5 (1/4'')	8 (5/16'')	10 (3/8'')	12,5 (1/2'')	16 (5/8'')	20 (3/4'')	25 (1'')
Ø tubes	6,5	8	10	12,5	14	18	20
A [mm]	8	10	12	15	18	25	30

T9b

Angled cable outlet without metal cover used where there is no mounting space for connection. Not recommended for frequent movements and vibrations during operation.

D	6,5	8	10	12,5	16	20
L	10	11	12	13	16	18

T9pb

Angle, tight cable routing used where there is little space for installation and cable connections. Possible additional wire cover in a braid or nickel tube.

D	6,5	8	10	12,5	16	20
L	10	11	12	13	16	18

T9pbe

Angle, tight cable routing used where there is little space for installation and cable connections. Possible additional wire cover in a braid or nickel tube..

Protections

Nickel Rods (Vn)

Rigid nickel rods used where connection movement is required. They are not immune to repetitive movements

Glass fiber leads (Cv)

Pure nickel lead, coated with fiberglass and silicone. It tolerates high temperatures well (350°C). It is a standard lead.

Glass fiber leads (Cv - 450)

Pure nickel lead, coated with fiberglass and silicone. It tolerates high temperatures well (450°C).

Glass fiber leads (Cv - 1000)

Nickel lead, covered with glass fiber and manganese. It tolerates very high temperatures (1000°C).

Teflon lead (Tf)

Ideal for watertight connections, where the cleanliness of the conductor surface is required. Not resistant to excessive heat (max. 250 ° C).

Silicone leads (Sf)

Ideal for excessive movements, vibrations and work at moderate temperatures (up to 180°C).

3-core silicone leads (P.Cs)

Ideal for long distances. Not resistant to high temperatures. Copper interior.

Silicone sleeve leads (Fs)

Ideal for moisture environments. Resistant to moderate friction. Protects the fiberglass lead.

Ceramic insulation (Pst)

Ideal for high temperatures. Inside there is a pure nickel wire. Not resistant to excessive vibrations or bumps.

Twisted web (Tm)

Works well during high friction and constant flexibility. Web in stainless steel.

Nickel Tube (Tv)

Protects against shocks and spillage of viscous products, relative mobility. A stainless steel option (Tvi) is available.

Thermocouple and power distribution

Cartridges with a built-in temperature sensor type "J", type "K" and Pt100 are used in machines and devices with a limited place of work and / or inability to mount an external temperature measurement. Depending on the accuracy of the measurement and the application of the element, the sensor is mounted inside the cartridge as follows:

Thermocouple isolated from the resistance wire, connection and metal casing to avoid interference with very sensitive control (reading). This is a standard montage of thermocouples in cartridge heaters.

Thermocouple located on the joint at the bottom metal casing (so-called "bottom"). Guarantees the highest accuracy and very fast temperature reading. Used mainly in injection molding systems and plastics.

A thermocouple mounted anywhere on the length of the cartridge. Used in unusual technological solutions. Centrally located, it allows to obtain an average temperature reading on the heater cover.

Types of thermocouples complying with the German standard DIN 4374
Type	Positive	Color	Negative	Color	Working temperature
Type "J"	Iron	Red	Constantan	Blue	0-750°C
Type "K"	Chrome	Red	Aluminum	Green	0-1250°C

Use to advanced technology, we are able to make cartridge heaters with an unusual distribution of rated power. This is particularly useful in situations where the heaters used must have different temperatures on the surface of the heater. Possible options:

Cartridge heaters with uneven power distribution used in an environment where a different temperature is required over the entire heating element. To achieve the intended effect, the method is used at a length of min. 100mm. Available heater combinations:
- more power in the middle of the heater
- more power at both ends

Cartridges with an additional cold zone used in an environment where an additional cold zone is required on the surface of the heating element. It can be placed on any length of the cartridge, allowing to get any combination