Introduction
Permanent magnet steel is used in a variety of industries including electrical motors, generators, transformers, tools and home appliances. It is a type of stainless steel that has been designed specifically to offer powerful magnetic properties. Transformation permanent magnet steel (GB/T 14991-94) replaces GBn 174-82 which is a significant upgrade to permanent magnet steel. This article takes a closer look at the improvements brought by this new version of permanent magnet steel and the potential applications it may have in various industries.
Types of Permanent Magnet Steel
Permanent magnet steel consists of two types: ferromagnetic and antiferromagnetic. There are various grades and characteristics of permanent magnet steel based on their percentage of ferromagnetic and antiferro-magnetic material. Both types of permanent magnet steel have magnetic properties that can be manipulated for specific purposes.
Ferromagnetic permanent magnet steel has a curved hysteresis loop that produces higher magnetic flux density and higher energy output than antiferromagnetic steel. It has a comparatively higher resistivity and coercive force. This makes it excellent for use in electrical and instrumentation applications.
Antiferromagnetic permanent magnet steel has a non-linear hysteresis loop, which makes it more suitable for applications that require large magnetic field gradients. It has lower coercivity, higher resistivity and better magnetic reversibility compared to ferromagnetic steel.
Advantages of Transformation Permanent Magnet Steel
Transformation permanent magnet steel (GB/T 14991-94) has a higher resistance to temperature changes, allowing it to maintain its high performance when exposed to extreme temperatures. It features improved corrosion resistance due to its higher chromium content, which makes it unfavorable for oxidation. The new steel also offers improved strength and flexibility, which makes it easier to work with and shape into various forms.
The new permanent magnet steel also has higher coercivity, which means it can maintain a higher remanent magnetic field for longer periods of time. This makes it better for applications that require a strong and long-lasting magnetic field. Additionally, it has improved magnetic switching capabilities, allowing it to be used in circuits and electronic components where switching operations need to be performed quickly and precisely.
Applications of Transformation Permanent Magnet Steel
Transformation permanent magnet steel is suitable for a wide range of applications in various industries. It is widely used in the automotive and aerospace industries for manufacturing motors, sensors and generators. It is also used in the medical technology field for producing MRI and other imaging equipment.
In addition, the permanent magnet steel can be used for producing and repairing tools, home appliances, magnetic data storage disks and wind turbines. Its strong magnetic properties and good switching capabilities make it an ideal choice for electronics and electrical components.
Conclusion
Transformation permanent magnet steel (GB/T 14991-94) brings a number of improvements over the previous GBn 174-82 version. Its improved coercivity and temperature resistance make it a great choice for applications that require a reliable and long-lasting magnetic field. Its increased strength and flexibility also makes it an ideal option for many industries, including automotive, aerospace, medical and electrical.
