Since the advent of NdFeB permanent magnet materials, it has attracted much attention because of its superior magnetic properties. We generally use remanence, coercive force and maximum energy product to measure the performance of magnetic materials.Remanence BrIf a magnet is compared to a sponge, then the remanence is like a sponge absorbing water and absorbing saturation, and the magnetic value of the magnet is displayed at this time. It refers to the magnetic induction intensity when the m...

The working principle of the Gauss meter is mainly based on the application of the Hall effect: when a current-carrying conductor is placed in a magnetic field, due to the Lorentz force, a transverse potential difference appears in a direction perpendicular to the magnetic force. field and current. A gaussmeter is an instrument for measuring magnetic fields based on the principle of the Hall effect. Hall probes generate a Hall voltage due to the Hall effect in a magnetic field. The measuring ...

Neutral salt spray testNeutral salt spray test is to spray salt water containing (5± 0.5)% sodium chloride with a pH value of 6.5 ~ 7.2 through a spray device in a specific test box, let the salt spray settle on the test part to be tested, and observe its surface corrosion state after a certain period of time. The temperature of the test chamber is required to be (35±2)℃, the humidity is greater than 95%, the fog reduction is 1 ~ 2mL/(h·cm2), and the nozzle pressure is 78.5 ~ 137.3kPa(0.8 ~ 1...