THE PRINCIPLES
Controlling the effectiveness of an autofrettage process is essential to guarantee the expected level of permanent deformation along the entire length of the barrel.
This control requires the monitoring of the deformations of the barrel’s outer wall during the autofrettage operation, as well as taking dimensional measurements on the inner wall before and after autofrettage.
THIOT INGENIERIE has developed a bore diameter measuring device that handles calibration, precision and data collection for inclusion in the ‘quality control’ report for the barrel in question.
The device is now available for 120, 125 and 155 mm caliber barrels (smoothbore barrel).