Shims type / QQIs
The Quantitative Quality Indicators (QQIs) is one of the most used method of assuring proper field direction and adequate field strength. A Gauss meter is frequently used together with QQIs to set up the inspection procedure for a specific component. Wet method is the only one applicable, and like other verification devices, they can only be used with continuous magnetization.
The QQI is a thin strip of either 0.002” or 0.004”-inch-thick AISI 1005 steel. A photoetch process is used to inscribe a specific pattern, such as concentric circles or a plus sign. QQIs are normally 3/4 inch square, but smaller shims are also available. QQIs must be positioned in close contact with the tested piece.
They can accommodate virtually any configuration with suitable selection
They can be reused with careful application and removal practices
In compliance with: ASTM E 1444; ASME V ART.7
|Part Number||N. Ref.|
04099901: Shim QQI Type CX-230
04099902: Shim QQI Type CX-430
04099903: Shim QQI Type CX4-230 (CM-230)
04099904: Shim QQI Type 3C2-234
04099905: Shim QQI Type 3C4-234