Electronics Incorporated - The Shot Peener - Shot Peening Library
Title: Stressonic Shot Peening (Ultrasonic Process)
Author: Jm Duchazeaubeneix
Source: Conf Proc: ICSP-7 (pg 444-452)
Publication year 1999
Document number: 1999061
Number of pages: 9
Abstract:
4.1 Process description
A piezoelectric transducer emits ultrasonic waves at 20 kHz. The waves are amplified when they travel through an acoustic booster, in a housing which contains the parts to
be treated and the shots (generally the balls of ball bearings). The dimensions of the vibrating parts allow vibration amplitudes of 50 to 200 µm to be attained.
The shots strike the vibrating walls and are reflected off the surface. Then, they collide with one another. The balls are scattered randomly throughout their encasing,
like molecules of gas. An homogeneous treatment is then obtained on the surface of the casing.
The parts being treated do not come into contact with the wall and the ultrasonic waves do not travel through these parts.
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