Hermetic cartridge heaters - Import export

Occasionally also these terms are used for cartridge heates: heating cartridge, insertion heaters, spiral cartridge heaters. As a rule cartridge heaters consist of a cylindrical stainless steel tube and thus provide a high corrosion prevention. There is a heating wire inside which is wound onto a ceramic core. The number of coils varies depending on the power. In order to avoid a short-circuit, the cartridge heater is filled with magnesium oxide and compressed afterwards. Highly compacted they reach a surface watt density of up to 50 W/cm² and withstand highest stress. In the plastics industry cartridge heaters are used in hot runners in order to temper thermoplasts during injection moulding processes. Other areas of applications for process heat are e. g. packaging, diecasting or continuous casting in which zinc or aluminium are processed. Further applications are to be found in mechanical as well as medical and laboratory engineering.

Square cartridge heaters are used where much power has to be installed near the surface of a tool, e.g. in cutting knives, sealing stations or hot plates. With a soft, malleable condition in stainless steel or nickel sheath square cartridge heaters can easily be pressed into common milled rectangular grooves. Apart from the advantageous heat transfer over ¾ of the sheath, it is not necessary to cement or cast in the heater which is imperative for round cartridge heaters. Unlike tubular heaters which are also available in square sections (see chapter Flexible Heating Pipes), the square cartridge heaters have the termination on one side and can be loaded with 16W/cm² (2.5W/in²) due to their special inside construction.

Maxiwatt High Load cartridges, which have been have proven themselves for 50 years successfully performing in thousands of applications applications that very few manufacturers are currently manufacturers are currently capable of producing, have a maximum temperature of 1000º.

The exclusive manufacturing design guarantees a precise temperature distribution throughout the plastic filament, melting it all at the same time. Only the thread of the nozzle is heated, where the casting process has to be produced. We only produce Cylinder Heater Core with different volts, watts and control systems, we do not include hot ends.

The expandable cartridge Heaters solve two major problems with conventional high density 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.

They are especially designed for quick adaptation in molds or surfaces where the use of rivets either causes problems or impossibility to use. Cuadrawatt cartridges are the better choice. Cartridges with a low density of watts are most recommended for moderate heating up to a maximum temperatures of 300ºC. The square tube is made of prime quality stainless steel. All the tubes are perfectly calibrated both inside and outside, into which a long-life ceramic piece is inserted. The tube resists a continuous temperature variation and has the best possible thermal conductivity, as the ceramic piece is in contact with the wall of the tube, which makes the most perfect heat distribution possible. Special Cold Sections: Distributed Wattage Single Circuit Element Independent Heat Zones Three Phase Element Dual Voltage Designs Thermocouple A,B,C RTD Elements Thermostats

Introducing Caldor's Cartridge Heaters, the ultimate high-performance heating solution designed for a wide range of industrial applications. Our cartridge heaters deliver exceptional heat transfer, uniform temperatures, and long-lasting durability to meet the most demanding process requirements. Built with top-quality materials, Caldor's Cartridge Heaters feature a robust construction and high watt density, ensuring rapid heat-up times and excellent heat distribution. The innovative swaged design ensures superior heat transfer, while the built-in thermocouple ensures precise temperature control for consistent results. Key Features: Customizable dimensions to fit various applications Temperature range: up to 1400°F (760°C) Wattage: up to 200 watts per square inch Superior heat transfer and uniformity Long service life and reliable performance Easy installation and maintenance

Cartridge Heaters by Maxiwatt is characterised by its flexibility in the production of exclusive orders for its customers, adapting all its manufacturing processes in order to obtain better productivity and efficiency when delivering orders in short periods of time. We do not use these 4 types of materials: Tantalum, Tin, Gold and Tungsten. If you would like to place an order or make a customised enquiry, please fill in the Customised Heaters form and we will contact you once we have analysed your needs.