Electric heating – Metal heating – By arc
Patent
1995-10-25
1998-03-10
Evans, Geoffrey S.
Electric heating
Metal heating
By arc
21912171, B23K 2600
Patent
active
057264112
ABSTRACT:
The present method of making a workpiece having a plurality of holes defined therein includes the plurality of holes defining a specific flow at a specific flow condition. The method of making the plurality of holes includes generally the steps of forming a first portion of holes having a first preestablished hole cross-sectional area being defined by a predetermined flow characteristic value of the first preestablished hole cross-sectional area at the specific flow condition; a cavity being formed; positioning a flow establishing device in communication with the cavity; positioning a flow measuring device in operative relationship with the flow establishing device; actuating the flow establishing device and establishing a flow through the first portion of holes; monitoring the flow; comparing the flow with the predetermined flow characteristic value; determining a flow requirement of a second portion of holes based on an accumulative predetermined flow characteristic value of the first and second portions of holes and the measured flow of the first portion of holes; conforming the forming device to a second predetermined hole cross-sectional area and forming the second portion of said plurality of holes having the second predetermined hole cross-sectional area; and repeating the aforementioned steps successively for the remaining portions of the plurality of holes until the required number of holes in the workpiece have been formed.
REFERENCES:
patent: 4218606 (1980-08-01), Whitman, III
patent: 4257559 (1981-03-01), Noren
patent: 4297559 (1981-10-01), Whitman, III
patent: 5010224 (1991-04-01), Shirey et al.
patent: 5117087 (1992-05-01), Baker et al.
patent: 5181379 (1993-01-01), Wakeman et al.
patent: 5293778 (1994-03-01), Schneiter
patent: 5365033 (1994-11-01), Williams
Abreu Mario E.
Rawlins Douglas C.
Sood Virendra M.
Sperling James B.
Cain Larry G.
Evans Geoffrey S.
Solar Turbines Incorporated
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