DEVICE FOR MAGNETIC PARTICLE CONTROL OF POWER SPRINGS Russian patent published in 2025 - IPC G01N27/84 

FIELD: physics.

SUBSTANCE: invention relates to measurement equipment, in particular to the field of non-destructive testing, and is intended for control of power springs and also parts having the shape of bodies of revolution. Device contains rotation rollers connected to the drive, for arrangement of power spring, capacitor bank connected to constant voltage source through charging resistor, a coaxial rod conductor in the form of a copper bus, which is introduced into the cavity of the controlled spring and connected through the key to the discharge circuit, two saddle-shaped solenoids with anti-serial connection of their windings, which are connected through the key to the plates of the capacitor bank. Drive is made in the form of a stepper motor and is connected to the control unit. Saddle-shaped solenoids are coaxially mounted on a non-magnetic traverse with a spread along it, which does not exceed the zone of sufficient magnetization of the controlled spring. Crossbar is rigidly suspended in the centre to the rod of the pneumatic lifting cylinder. Spring coils together with rotation rollers are placed in bath with magnetic suspension with possibility of immersion and dipping of lower part of coils during spring rotation. Rod conductor on ends is equipped with plugs, into which end parts of copper bus are pressed, with output of one of its parts beyond end face of power spring, which is equipped with contact unit with the possibility of connection by means of clamping one plug with the first power cable connected through the key to the upper plate of the capacitor bank. Other plug is fitted by its end part into the metal earthing plate connected by the second power cable to the other plate of the capacitor bank.

EFFECT: improved manufacturability and reliability of magnetic particle inspection of power springs.

2 cl, 2 dwg