characteristics of motor magnets:
Remanence (Br): Remanence, also known as residual induction, is measured in Gauss (kG) and describes the level of magnetization retained inside a magnet after removing the external excitation field. Remanence is an important indicator of the inherent magnetic strength of a material and directly affects motor performance. It's worth noting that remanence changes with temperature, and this change can be quantified by the reversible temperature coefficient of remanence (α), reflecting the magnet's sensitivity to temperature changes.
Coercivity (Hci): Coercivity, measured in Gauss-Oersteds (kOe), refers to the minimum reverse magnetic field strength required to completely demagnetize a magnet. Coercivity is a key parameter for evaluating a material's resistance to demagnetization, impacting motor stability under high loads or temperatures. Coercivity also changes with temperature, and its reversible temperature coefficient (β) describes the degree of change with temperature.
Industrial Equipment Industry
Applications: Pump motors, fan motors, compressor motors, conveyor motors, etc.
Purpose: High-temperature and corrosion-resistant properties ensure long-term stable operation in harsh environments.
Power Tool Industry
Applications: Handheld electric drills, electric screwdrivers, garden tool motors, etc.
Purpose: Ferrite magnets provide reliable magnetic force, ensuring stable power output and affordable cost for power tools.
Why Choose Young Magnet?
Shanghai Young Magnet Co., Ltd. is a leading magnet manufacturer in China with over 10 years of experience and an annual production capacity of 800 tons. Specializing in NdFeB, SmCo, AlNiCo, and ferrite magnets, all ISO9001 and SGS certified, we serve markets across the Americas, Europe, Middle East, Korea, Japan, and China. Based in Shanghai, we integrate R&D, production, and sales, producing 800 tons of NdFeB and 6000 tons of ferrite magnets annually. Our products are widely used in automotive, home appliances, audio, communications, and new energy sectors. Committed to quality and innovation, we provide comprehensive technical support and personalized service, with overseas sales operations established since 2013 and a Hong Kong subsidiary since 2015.
FAQ
What kind of magnet is used in motors?
They are commonly used in motors that require a constant magnetic field including motors used in electric vehicles, generators, and wind turbines. There are two common types of permanent magnets used in motors neodymium and ferrite magnets, also known as ceramic magnets.
What are ferrite magnets used for?
They are used to make permanent magnets for applications such as refrigerator magnets, loudspeakers, and small electric motors. "Soft" ferrites have low coercivity, so they easily change their magnetization and act as conductors of magnetic fields.
Do ferrite magnets lose their magnetism?
Yes, ferrite magnets can incur a permanent loss of magnetization when exposed to temperatures below -40°C. Magnetic products different from standard magnets are even more susceptible to low temperatures. For example, magnetic tapes and sheets can already be damaged at temperatures of -20°C.
Hot Tags: ferrite arc magnet for motor, China ferrite arc magnet for motor manufacturers, suppliers, factory, Arc Ferrite Magnets, multi-polar ring magnets, Ring Ferrite Magnets, Rubber Magnets