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Magnetic force and surface magnetism of injection molding magnet

by Jian Guo

Magnetic force and surface magnetism of injection molding magnet

How about the magnetic force of injection molding magnet

The magnetic force of an injection molded magnet depends on factors such as its material, shape and size. Generally speaking, the magnetic force of injection molded magnets is weaker than that of traditional permanent magnets, but they have higher energy density and longer service life.
The magnetic field strength of injection molded magnets is usually in the range of hundreds of megaA/m to several gigaA/m, depending on its material and shape. For example, injection-molded magnets made of NdFeB materials can reach a magnetic field strength of tens of thousands of A/m, and for some special applications, higher-grade materials can also be used to manufacture stronger magnets.
It should be noted that the magnetic field strength of injection molded magnets will gradually weaken over time, which is due to the gradual collapse of their internal magnetic domain structure. Therefore, when using injection molded magnets, it is necessary to select appropriate materials and shapes according to specific application scenarios to ensure their performance and life.

Injection magnetic surface magnetic

Injection molding magnetism refers to a technology that uses injection molding magnets to make precision instruments such as electronic watches and timers. Injection molded magnets are widely used in these precision instruments due to their high energy density and long service life.

The manufacturing process of injection molding magnetic surface magnet mainly includes the following steps:

1. Design model: Design the corresponding model according to the required accuracy and use environment and other factors.
2. Manufacture of molds: use computer-aided design software to design, and then manufacture molds by CNC machining or by hand.
3. Making injection-molded magnets: After mixing magnetic powder and plastic raw materials, they are made into injection-molded magnets through a special process.
4. Install the injection magnet: install the injection magnet into the mold, and conduct debugging and testing.
5. Assembling the finished product: Assemble the finished injection magnet and other parts into a finished product, and carry out testing and calibration.
It should be noted that the production of injection molded magnetic surface magnets needs to strictly control the quality of each link to ensure that the product has high precision and high stability. At the same time, when using injection molded magnetic surface magnets, it is also necessary to pay attention to avoid the influence of magnetic field on electronic components, so as not to affect the performance and life of the product.

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