Differences Between Overhead and Electromagnetic Stirrers

　　Overhead stirrers mix liquids in biology, physics and chemistry, cosmetics, health products, food and reagent laboratories. Their innovative design and advanced manufacturing provide high torque at low speeds and reliable continuous operation. A compact, high-power universal motor provides dependable drive. A digital touch-operated stepless controller makes speed adjustment convenient, while the digital speed display supports accurate data collection. A multistage nonmetallic gear mechanism multiplies torque with stable, quiet operation. A dedicated chuck makes the stirring shaft easy to install and remove.

　　Electromagnetic stirring(Electromagnetic stirring: EMS) intensifies molten-steel motion using electromagnetic force induced in the liquid core of a cast strand. The stirrer's alternating magnetic field penetrates the molten steel and induces current. Its interaction with the local magnetic field produces a body force acting throughout the steel volume, driving movement.

　　Difference:

　　An overhead stirrer uses a motor connected to a stirring shaft inside the vessel. A magnetic stirrer uses a motor to rotate internal magnets, which drive a magnetic stir bar inside the vessel.