The internal magnetic magnetic circuit system, the biggest advantage of the 18-inch 1000W NEO magnet speaker is that it does not leak magnetic (suitable design). In the past, magnets were made of AlNiCo or SmCo magnets. Because cobalt and nickel are rare metals, the world's storage is very low, so it is expensive. At present, the NdFeB magnets we use are the most cost-effective magnets today. The 18-inch 1000W NEO magnet speakers do not contain precious metals, and are small in size and difficult to demagnetize.
Magnetic core, U cup – High-quality carbon structural steel cold-rolled steel sheet with good magnetic permeability, its performance is in line with GB/T 13237-1991 “Quality carbon structural steel cold-rolled steel sheet and strip”. This low carbon steel sheet has good mechanical properties, elongation properties and weldability. Low strength, good surface quality, generally used for stamping and drawing parts such as pedestal, U iron and so on. 18-inch 1000W NEO magnet speaker base frame and other parts are recommended to use domestic steel plate 08 and 08F, spcc (JIS standard) imported steel plate, its performance is the same as domestic 08 and 08F steel plate.
Pay attention to the polarity of the magnetizer when magnetizing the 18-inch 1000W NEO magnet speaker. Make sure that the top of the T core and the inner magnetic core are N poles. When the voltage is constant, repeated magnetization has no effect on the B value. When the magnetization voltage is increased, the re-magnetization B value will also increase, but if the magnet has reached magnetic saturation, the voltage rises B will not rise. high.
For the magnetization of 18-inch 1000W NEO magnet speakers, we require closed-circuit magnetization, which is to be magnetized after being assembled into a magnetic circuit system, so that the magnet can be fully saturated. However, for a dual magnetic circuit system that requires two magnets, one magnet is open-circuited and the open-circuit magnetizing magnet is unsaturated. Therefore, we must strictly control the production process, and we should never open the circuit for magnetization.
The above is the structure of the magnetic circuit system and related problems. The inspection of magnets, pedestals, magnetic cores and T-irons has yet to be improved. For example, it is better to test the magnets with a magnetic fluxmeter. The method is simple and strict.
The 18-inch 1000W NEO magnet speaker magnetic circuit system uses Y-358 (A B) glue, which is an acrylic glue. The glue is applied in an overlapping manner, and after being closed, it is rotated 2-3 times, and the contact is positioned and solidified. The proportion and quantity of glue should be strictly controlled.
