Method of and Apparatus for Shot Peening Stainless Steel Tubing
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United States of America Patent
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Issued Date -
Dec 25, 2014
app pub date -
Jun 20, 2013
filing date -
Jun 20, 2013
priority date (Note) -
Abandoned
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Abstract
A method of and an apparatus for shot peening an inner surface of a stainless steel tube. A set of at least two electromagnets is arranged around the stainless steel tube and has an iron core with an air gap adjacent to the stainless steel tube. At least one magnetic shot particle is provided inside the stainless steel tube. A controller controls the activation of the electromagnets according to a predetermined sequence, so as to cause the at least one magnetic shot particle to repeatedly hit the inner surface of the tube so as to shot peen the inner surface.
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