Almen Gage Accuracy

Author:  Jack Champaigne, Editor of The Shot Peener
Source:  The Shot Peener magazine, Vol 06/ Issue 3, Fall 1992
Doc ID:  1992079
Year of Publication:  1992
Abstract:  
Abstract The Almen gage has been the dominant process control device for shot peening since its introduction in 1942. The ability of this gage to accurately determine shot stream intensity is related to its construction and maintenance. Attributes investigated included proper placement and wear of balls, indicator tip and guide pins, and influence of indicator tip spring force upon the Almen strip. A new calibration block, flat on one side and curved on the other to represent 0.24 inch arc height, is described.