Metals that cannot be heated by induction include non-ferrous metals such as copper, aluminum, brass, and bronze. Induction heating works by using a magnetic field to induce a voltage in a conductive material, which then generates heat. However, non-ferrous metals have poor magnetic properties and do not respond well to induction heating.
For example, copper is a non-ferrous metal and cannot be heated effectively by induction. Induction heat only works on ferrous metals, which are metals that contain iron. Copper-bottomed pans and aluminum pans are generally unsuitable for induction cooking due to their non-ferrous nature.
Induction heating is commonly used for melting precious metals like gold, silver, palladium, platinum, as well as other non-ferrous metals like copper and aluminum. Induction systems are used in various industries for melting metals, producing semi-finished metals, refining metals, and making objects through casting processes.
In addition, induction brazing is often used in higher production runs for joining metal components. It provides uniform results and is highly repeatable. Induction sealing is another application where the heat generated by induction is used to fuse aluminum foil to containers, creating a tamper-resistant seal.
Induction vacuum melting is a method where induction heating is used to heat a load or workpiece under vacuum or in a controlled atmosphere. This enables the processing of reactive metals, specialty alloys, and other sensitive conductive materials.
Overall, while induction heating is versatile and widely used for various metal applications, it is limited to ferrous metals and may not be suitable for non-ferrous metals like copper and aluminum.
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