To verify this magnetism is checked for defects on the surface of the skin, and a shallow.Workpieces that are magnetic substances. (Ferro-Magnetic) by the work as a magnet, and then sprinkling iron powder into the skin and work.Iron powder is gathered is on the surface of the bug, which will tell you the size, shape and scope of the bug.Particular use for monitoring search for defects on workpiece surface or within a very small piece of work that students are not deep.The characteristic flaws that make such as cracks, cracks in salaek porous air pockets, etc.
การแปล กรุณารอสักครู่..
