Plate-end processing method and blasting device
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United States of America Patent
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Apr 5, 2016
Grant Date -
Mar 7, 2013
app pub date -
Aug 24, 2012
filing date -
Sep 1, 2011
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Abstract
A plate-end processing method comprises the steps of disposing a slit nozzle having a slit-shaped opening at a nozzle tip such that a longitudinal direction of the opening extends along a longitudinal direction of an edge formed along an end of a plate, and such that a distance between the tip of the nozzle and an apex of the edge is equal to 3 mm or smaller, and ejecting an abrasive with a median diameter smaller than or equal to 20 μm with an ejection pressure of 0.1 MPa to 0.5 MPa to the edge via the nozzle and collecting the ejected abrasive and the abrasive and cut dusts adhered to the plate by suctioning the ejected abrasive, the adhered abrasive and cut dusts from a front side of an ejecting direction of the abrasive at an average flow rate of 30 m/s or higher.
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