trading
Project description
Pie gauge or pie field indicator is a tool mainly used in determining the magnetic field direction on the flux of a surface.
It is made of eight ferrous segments which are braised in a single piece resulting in a star pattern of non-ferrous discontinuities. Most of the Pie gauges are highly permeable disks divided into four, six or eight sections as per the requirement by non-ferromagnetic materials. The main purpose of divisions is to serve as artificial defects which can radiate out in different directions from its center.
It is used in the detection of discontinuities occurred in the ferrous metal parts. Generally, it is used along with dry powders for yoke inspections or prods where there is a flat surface such as steel castings or weldments. Pie gauge is specifically designed to be used for flat surfaces and it cannot determine the balanced fields in multidirectional magnetization.
The main benefit of pie gauge is its flexibility in usage even without deterioration. The major disadvantage is, it retains slight residual magnetism to indicate the existence of prevailing even after removing the source of magnetism.
