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What are the types of cast aluminum heating plates?

Published:0713, 2023
There are four main types of cast aluminum electric heating plates: thin shell type, cast plate type, tubular element type, and tubular element cast plate type.
Thin shell heating plate
A thin shell electric heating plate is a shell formed by stamping a metal sheet and embedded with a spiral shaped electric heating wire. The spiral shaped electric heating wire is filled with thermal conductivity and insulation filling material between the metal shell. This metal thin shell structure is simple and inexpensive, but the board surface is prone to deformation, and there is a decrease in thermal efficiency after long-term use. Therefore, it is generally made into low-power electric heating boards below 800W.
Cast plate heating plate
The cast plate heating plate structure is the same as the thin shell heating plate structure, except that the plate surface is a metal casting component, which has high strength and is not easily deformed. This structure is mostly used in China. A tubular element electric heating plate is an electric heating plate formed by bending a metal tubular electric heating element into a plane spiral involute. This metal tubular electric heating element has a semicircular cross-section and a flat surface, which provides a large heat transfer surface between the electric heating plate and the bottom of the cooking pot to improve thermal efficiency.
Tubular element casting plate electric heating plate
The tubular element casting plate heating plate is a complete heating plate formed by bending a general metal tubular heating element into a 1-5 circle shape, and then casting it into a silicon aluminum alloy or silicon copper alloy. Compared to the tubular element electric heating plate, it has a larger effective heat transfer surface compared to the bottom of the pot. This structure has high mechanical strength, long lifespan, and high thermal efficiency, making it particularly suitable for environments with vibrations such as ships and vehicles. Most electric rice cookers produced domestically and internationally use this structure.

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