Magnetic particle testing is a non-destructive testing process used to detect cracks in ferromagnetic materials like steel by exploiting the material's magnetic properties. It works by magnetizing the material and applying iron particles or a wet magnetic solution to the surface so any discontinuities that disrupt magnetic field lines are revealed. Acceptance criteria for straightness of casting bosses in one component specify that no gap is allowed between the boss and connecting surface, and any gap must be less than 1.5 mm to be considered acceptable.

1. Magnetic Particle Testing
MPT is a NDT process for detecting surface and subsurface crack in ferromagnetic material.
Ferromagnetic material: Material attract in magnet.

2. Straightness of Bosses
Requirement: No gap sawn between casting and right angle.
Maximum Allowed: Gap Allowed up to 1.5 mm
Accepted
Not
Accepted
No
Gap
Seen
Gap
Seen
Accepted
Not
Accepted
No
Gap
Seen
Gap
Seen

3. Straightness of Bosses
Requirement: Straightness of both weld chamfer edges
Maximum Allowed: Gap Allowed up to 1.5 mm
Accepted Not Accepted

4. THANK YOU……