This standard specifies the requirements, magnetic particle, magnetic suspension, magnetization method, magnetization specification, flaw detection sensitivity calibration and the like of magnaflux equipment.
This standard is applicable to the magnaflux of injection nozzle, plunger and delivery valve made from ferromagnetic materials.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. At time of publication, the editions indicated were valid. All the standards will be modified, and all parties using this standard shall discuss the possibility of using the latest version.
GB/T 253-1989 Kerosine
GB/T 15822-1995 Methods for Magnetic Particle Testing
3 The Requirements for Parts Surface during Magnaflux
3.1 The roughness value Ra of parts surface shall be 3.2 μm.
3.2 The grease, rust stain, sand burning, fiber and other substances able to stick magnetic particles shall be cleared away from the parts surface.
3.3 For the parts which are required for surface treatment, the magnaflux shall be conducted before surface treatment; if it’s required to be conducted after surface treatment, the covering layer shall not affect the magnaflux effect.
