Cutting strengthened glass

Details Cutting strengthened glass Cutting strengthened glass

B - Operations, Transporting

26

F

164/16, 164/35

B26F 3/00 (2006.01) B24C 1/04 (2006.01) B24C 3/04 (2006.01) B25B 11/00 (2006.01) C03B 33/023 (2006.01) C03B 33/04 (2006.01) C03B 33/10 (2006.01)

Patent

CA 1253789

ABSTRACT OF THE DISCLOSURE Cutting strengthened glass by means of a high velocity fluid jet. A suitable fluid is placed under high pressure and directed against the surface of the glass in a highly collimated stream of small diameter at high velocity. Very fine abrasive particles are aspirated into the high velocity stream prior to its impingement upon the glass to serve as a cutting medium for the strengthened glass. The pressure of the fluid is reduced when starting the cut to avoid venting of the glass during initial penetration, and the pressure is then increased for movement of the fluid jet along the desired line of cut. The relationship between fluid pressure, line speed and abrasive grit size is carefully controlled to produce a smooth cut free from vents and chips so as to avoid failure of the strengthened unit.

489511

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