The expandable cartridge Heaters solve two major problems with conventional high density cartridge heaters , poor durability and proper fit extraction improving the accuracy of the temperature with hundreds of attachments and exits for all kind of processes .
With the expandable cartridge heaters we join for the first time the best of the common cartridge heater with cartridge and an adaptive tuning quick and easy removal.
Cold HeatSelf-expanding cartridge heater
Longer lifeThe expandable cartridge consists of a high performance compressed cartridge with the highest quality materials, with the particularity of being able to expand on its own, thanks to the fork shape tensioned at a point that allows the expansion and retraction of the cartridge.
The purity of materials
Expan cartridges are manufactured through an internal compacting process of all their components, in order to increase their useful life. The N'quel/Cromo 80/20 conductor wire is introduced in the cavities of a ceramic body that centers it, obtaining the ideal separation for a better insulation. All coated with high purity magnesium oxide and controlled granulometry to ensure the complete filling of the Expan cartridge. Later, the surface is compacted and rectified until it is calibrated to the desired size. Finally, it undergoes a rigorous quality control that guarantees the best performance of the cartridge. We do not use these 4 types of materials: Tantalum, Tin, Gold and Tungsten.
The installations and the unique construction system guarantee maximum purity inside the plant, ensuring a longer service life.
Hundreds of terminations
The best complement: thermocouples
The cartridge heaters can be built with a probe incorporated at any point of the cartridge at the customer's request. The advantages of incorporating probes are innumerable, for example: extends the life of the cartridge heater considerably, localized temperature accuracy, energy saving, adaptable to where a conventional probe cannot be housed due to space problems.
Technical Data
| Voltage (V) | 120 - 130 - 240 - 380 - 400 |
| Power tolerance (w)* | + 5 % - 10 % |
| Power | Depending on dimensions |
| Lenght tolerance | ± 3% maximum 20mm |
| Standard diameter tolerance | -0.10 to -0.15 mm |
| Leakage current | <=0.5mA to 253 v. |
| Aislamiento* | >=5 MΩ to 500 V |
| High-voltage cartridge* | 1500V to > 24V operating voltage |
| 500V to > 24V operating voltage | |
| Pipe material | Stainless Steel |
| Thread | NiCr 8020 |
| Melting temperature | 750º C |
*tested at ambient temperature
Uniform heat
Expan cartridge heaters are built with a single spring-shaped heating wire, which contains more heating wire than any other cartridge heater model. This results in a more uniform heat all around the perimeter, without any cold spots or temperature variations.
Cartridge that molds to the hole
Expansion around the entire perimeter of the cartridge heater makes the Expan cartridge the best solution for larger diameter holes caused by wear, expansion or made to tight tolerances.
The cartridge heater setting tolerance is referred to as the distance obtained between the surface of the cartridge and the wall of the internal bore, which must be uniform throughout its linear perimeter.
Faster and easier removal, even on long lengths
Expan cartridge heaters, due to their unique construction system, allow easy extraction when the cartridge heater is cold, saving considerable time and effort, reducing machine downtime and human resources to a minimum. No adjustment paste is required and you will not have to drill, destroy or perform costly operations to remove the cartridge heater. You will be able to reuse Expan cartridge heaters in other molds you need to heat.
Precision in expansion
Maxiwatt's expandable cartridge heaters are designed to have the widest range of tolerances of all quality cartridges on the international market.
All intermediate sizes in diameter and length, volts, wattage distribution, cold zones, special finishes, terminations, etc. can be manufactured.
| Ø | Drill | Ø real | Zona fría | Minimum length |
Maximum length |
Maximum amperes according to length |
|
| 3/8'' | 9,52 ±0,1 | 9,3 | 20 | 100 | 1000 | 15 | 15 |
| 10 | 10 ±0,1 | 9,8 | 20 | 100 | 1000 | 15 | 15 |
| 12 | 12 ±0,1 | 11,8 | 20 | 100 | 1500 | 25 | 25 |
| 12.5 | 12.5 ±0,1 | 12,3 | 20 | 100 | 1500 | 30 | 25 |
| 1/2'' | 12.7 ±0,1 | 12,5 | 20 | 100 | 1500 | 30 | 25 |
| 15 | 15 ±0,1 | 14,8 | 30 | 100 | 1500 | 40 | 25 |
| 5/8'' | 15,88 ±0,1 | 15,68 | 30 | 100 | 1500 | 40 | 25 |
| 16 | 16 ±0,1 | 15,8 | 30 | 100 | 1500 | 40 | 25 |
| 3/4'' | 19,05 ±0,1 | 18,85 | 30 | 100 | 1500 | 40 | 25 |
| 20 | 20 ±0,1 | 19,8 | 30 | 100 | 1500 | 40 | 25 |
| 25 | 25 ±0,1 | 24,6 | 30 | 100 | 1500 | 40 | 30 |
| 1'' | 25,4 ±0,1 | 25 | 30 | 100 | 1500 | 40 | 30 |
Longer useful life the Diference
Expan cartridge heaters have more heating wire (Nickel/Chromium 80/20) than bipartite cartridge heaters or compressed cartridge heaters with the same compression. The principle is key; the more heating wire, the larger the diameter has to be for the same watts. The larger diameter reduces heating wire fatigue and wear, which translates into longer life.
Section of an Expan cartridge heater with more heating wire per cartridge heater.
Patent pending.
