Magnetic Particle Testing (MT)：
a. Purpose: Surface and sub-surface flaws detection of Ferro-material.
b. Principle:
c. Application:
1). All Ferro-magnetic parts, such as transmission shaft, gear, roller, crankshaft, working roller.
2). Various parts of steam generator, such as steam turbine blades, screws, connecting rods, rotors, valves
3). All Ferro-magnetic welds, such as co0nstruction welds, piping welds, various welds.
Turbine Shaft Demagnetizing ：
a. Purpose: Eliminate the friction damage and vibration damage caused by the residual magnetism of ferromagnetic metal parts or shafts. This is essential for
ensuring the proper function of parts in sensitive applications, such as electronics, automotive, and aerospace industries.
b. Principle: The magnetic field reversed from the outside is used to gradually demagnetize the magnetism close to 0 from the high magnetic field strength.
c. Application:
Turbine shaft, turbine blade, compressor shaft, bearing, etc.
