Method of welding control rod tube ends and end caps

Details Method of welding control rod tube ends and end caps Method of welding control rod tube ends and end caps

1996-03-18

1997-10-07

Shaw, Clifford C.

Electric heating

Metal heating

Of cylinders

219 75, 21912511, B23K 912

Patent

active

056744110

ABSTRACT:
A control rod tube and end plug are disposed in a weld chamber. A fixed welding torch with a tungsten electrode is disposed adjacent the weld area. A collet grips the tube and an inflatable seal seals the weld chamber. By rotating the collet, the tube and end plug are seal-welded to one another without loss of fusion, porosity or suck-back effects. The weld chamber is maintained under a positive pressure of between 5 to 10 psi gauge.

REFERENCES:
patent: 3828518 (1974-08-01), Silk et al.
patent: 3842238 (1974-10-01), Boyko et al.
patent: 4188521 (1980-02-01), Yeo
patent: 4511075 (1985-04-01), Yeo
patent: 4570051 (1986-02-01), Miwa

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