When discussing the calculation method for the rating of cartridge heaters, it is essential to consider several key factors that significantly affect the lifespan of the heater. These factors include watt density (W/cm²), application temperature, and the gap between the insertion point and the heater. These factors must be taken into account before determining the heater’s rating.
To illustrate the calculation method with a specific example: Suppose the required mold temperature is 400℃, the diameter of the hole for heater insertion is Ф12.2mm, and the specification of the heater is Ф12mm×110mm. Based on these conditions, we can calculate the surface area of the heater (in cm²). At a mold temperature of 400℃ and a gap of 0.2mm, by consulting the corresponding temperature and watt density chart, we can find that the maximum watt density at the intersection point is 7W/cm². Therefore, the maximum rating of the heater is 36cm²×7W/cm²=252W.
Against this technical discussion backdrop, we must mention Futai Machinery, a professional company that has been focusing on the design and manufacturing of heating element machinery since 1999. Located in Huiyang District, Huizhou City, Guangdong Province, China, Futai Machinery boasts over 6,000 square meters of self-built plant space and a factory area of 12,000 square meters, making it one of the leading manufacturers of automated heating element machinery and intelligent assembly production lines in China.
Futai Machinery not only has a broad product supply in the domestic market but is also continuously expanding its presence in overseas markets, including countries like Turkey, India, Russia, Brazil, the USA, Mexico, Japan, Thailand, and others. The company integrates R&D, production, marketing, and service, holding independent intellectual property rights for most of its machines. Futai Machinery is committed to continuously upgrading its products and improving quality, looking forward to cooperating with both new and regular customers to create a bright future.
In terms of heater machinery design, Futai Machinery’s depth of expertise and long-term industry experience make it a standout in the field. They offer not only standardized heating element machinery but also customized solutions for both single machines and automated production lines, including factory layout design.
In summary, when considering the rating calculation for cartridge heaters, it is not only necessary to comprehensively consider technical parameters such as watt density, application temperature, and gap but also to refer to the technical support and solutions from professional companies like Futai Machinery to ensure the effectiveness and long-term stability of the heater.
