Cutting strengthened glass

Details Cutting strengthened glass Cutting strengthened glass

1985-04-15

1987-10-27

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51326, 83 53, 83177, B24C 100

Patent

active

047020423

ABSTRACT:
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.

REFERENCES:
patent: 2985050 (1961-05-01), Schwacha
patent: 3212378 (1965-10-01), Rice
patent: 3532014 (1970-10-01), Franz
patent: 4272017 (1981-06-01), Franz
"Abrasive Jet Machining", Tool and Manufacturing Engineer, Nov. 1967; Ingulli.

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