Glass manufacturing – Processes – Reshaping or surface deformation of glass preform
Patent
1998-11-30
2000-01-25
Vincent, Sean
Glass manufacturing
Processes
Reshaping or surface deformation of glass preform
65110, 65120, 65268, 65284, 65285, 65271, 65300, 82173, 264 80, 264573, 431 12, C03B 23043
Patent
active
06016669&
ABSTRACT:
An apparatus for applying heat to a rotatable workpiece is disclosed. A rotating lathe is provided for mounting a workpiece, for example a quartz tube, thereto so as to enable rotation of the workpiece. At least one translatable burner is coupled to a fuel source and an oxygen source for producing a flame. The burner is directed such that flame impinges upon the workpiece mounted on the rotating lathe. A first pulse control valve is coupled to and positioned between the translatable burner and the fuel source. A second pulse control valve is coupled to and positioned between the translatable burners and the oxygen course. The first and second pulse control valves are pulsed at a predetermined frequency to prevent the formation of a steady thermal boundary layer about the workpiece to improve the rate of heat transfer between the flame and the workpiece.
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Piekoszewski et al, "Irradiation of silicon with a pulsed plasma beam containing Mo ions," Surface and Coatings Technology, 93, pp. 258-260, 1997 No month available.
Piekoszewski et al, "Modification of the surface properties of materials by pulsed plasma beams," Surface and Coatings Technology, 106, pp. 228-233, 1998 no month available.
Correa Sanjay Marc
Feitelberg Alan S.
General Electric Company
Patnode Patrick K.
Snyder Marvin
Vincent Sean
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