- Categories:News
- Author:
- Origin:
- Time of issue:2021-08-17 20:59
- Views:
(Summary description)Magnets need to be demagnetized for a number of reasons, one of which is the recycling of the magnetic material. Recycling of magnetic materials such as plastics. The recycling process requires shredding or pulverizing these materials, which is very difficult if the materials are still magnetic. Therefore, these recycled materials are first demagnetized.
----In the production process of the permanent magnet motor, in order to improve the assembly efficiency, the magnetic steel needs to be temporarily demagnetized, and then magnetized after being embedded in the motor. In addition, when the magnetic material is magnetized, the unqualified products after magnetization also need to be demagnetized and re-magnetized. The delivery status of some products is stipulated in the order contract. For products that require delivery in a demagnetized state, they must be demagnetized before packaging.
----Generally speaking, the demagnetization methods include thermal demagnetization method and AC and DC demagnetization method. The thermal demagnetization method can obtain a neutral magnetic state, but it will cause irreversible losses such as oxidation and structural changes of the product. The AC and DC recovery demagnetization methods are the current mainstream methods. By establishing a reverse magnetic field and gradually reducing it to zero, the magnetic state of the magnet is returned to zero. The device used is the demagnetization power supply and the corresponding coils, fixtures, etc.
----The currently widely used rare earth permanent magnet materials such as samarium cobalt and neodymium iron boron have very high coercivity (Hc). Similar to the magnetizing power source, the demagnetizing power source is also composed of a high-power power source for generating a high-intensity magnetic field and a corresponding demagnetizing coil or fixture.
(Summary description)Magnets need to be demagnetized for a number of reasons, one of which is the recycling of the magnetic material. Recycling of magnetic materials such as plastics. The recycling process requires shredding or pulverizing these materials, which is very difficult if the materials are still magnetic. Therefore, these recycled materials are first demagnetized.
----In the production process of the permanent magnet motor, in order to improve the assembly efficiency, the magnetic steel needs to be temporarily demagnetized, and then magnetized after being embedded in the motor. In addition, when the magnetic material is magnetized, the unqualified products after magnetization also need to be demagnetized and re-magnetized. The delivery status of some products is stipulated in the order contract. For products that require delivery in a demagnetized state, they must be demagnetized before packaging.
----Generally speaking, the demagnetization methods include thermal demagnetization method and AC and DC demagnetization method. The thermal demagnetization method can obtain a neutral magnetic state, but it will cause irreversible losses such as oxidation and structural changes of the product. The AC and DC recovery demagnetization methods are the current mainstream methods. By establishing a reverse magnetic field and gradually reducing it to zero, the magnetic state of the magnet is returned to zero. The device used is the demagnetization power supply and the corresponding coils, fixtures, etc.
----The currently widely used rare earth permanent magnet materials such as samarium cobalt and neodymium iron boron have very high coercivity (Hc). Similar to the magnetizing power source, the demagnetizing power source is also composed of a high-power power source for generating a high-intensity magnetic field and a corresponding demagnetizing coil or fixture.
- Categories:News
- Author:
- Origin:
- Time of issue:2021-08-17 20:59
- Views:
Magnets need to be demagnetized for a number of reasons, one of which is the recycling of the magnetic material. Recycling of magnetic materials such as plastics. The recycling process requires shredding or pulverizing these materials, which is very difficult if the materials are still magnetic. Therefore, these recycled materials are first demagnetized.
----In the production process of the permanent magnet motor, in order to improve the assembly efficiency, the magnetic steel needs to be temporarily demagnetized, and then magnetized after being embedded in the motor. In addition, when the magnetic material is magnetized, the unqualified products after magnetization also need to be demagnetized and re-magnetized. The delivery status of some products is stipulated in the order contract. For products that require delivery in a demagnetized state, they must be demagnetized before packaging.
----Generally speaking, the demagnetization methods include thermal demagnetization method and AC and DC demagnetization method. The thermal demagnetization method can obtain a neutral magnetic state, but it will cause irreversible losses such as oxidation and structural changes of the product. The AC and DC recovery demagnetization methods are the current mainstream methods. By establishing a reverse magnetic field and gradually reducing it to zero, the magnetic state of the magnet is returned to zero. The device used is the demagnetization power supply and the corresponding coils, fixtures, etc.
----The currently widely used rare earth permanent magnet materials such as samarium cobalt and neodymium iron boron have very high coercivity (Hc). Similar to the magnetizing power source, the demagnetizing power source is also composed of a high-power power source for generating a high-intensity magnetic field and a corresponding demagnetizing coil or fixture.
