Inspection methods

A: Neutral salt spray test Neutral 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...

A: 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 transver...

A: 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 prod...