Metal fusion bonding – Process – With condition responsive – program – or timing control
Patent
1976-04-28
1978-01-10
Whitehead, Harold D.
Metal fusion bonding
Process
With condition responsive, program, or timing control
228113, B23K 1902
Patent
active
040674908
ABSTRACT:
A method and apparatus for maintaining quality control in a friction welding operation where two workpieces are relatively rotated while being constantly pressed into engagement at a common interface. One or more operating conditions, including axial upset at the common interface, are monitored and a signal is substantially instantaneously produced to indicate correlation between the monitored operating conditions and respective ranges for those conditions which are predetermined as being representative of an effective bond between the workpieces. In a first embodiment, operating conditions of axial upset, pressure of engagement between the workpieces and relative rotating speed are simultaneously monitored. In a second embodiment, axial upset is monitored in selectively delayed relation to commencement of the weld in order to provide improved quality control over inertia welding.
REFERENCES:
patent: 3591068 (1968-11-01), Farmer et al.
patent: 3623213 (1971-11-01), Sciaky et al.
patent: 3623214 (1971-11-01), Sciaky et al.
patent: 3678566 (1972-07-01), Ellis et al.
Justice "Design Control" Metal Progress, July 1968, pp. 91-94.
Jones Thaddeus M.
Kiwale Jozef
Rufer Ernest J.
Caterpillar Tractor Co.
Ramsey K. J.
Whitehead Harold D.
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