Method for welding of end plug of control rod

Details Method for welding of end plug of control rod Method for welding of end plug of control rod

1993-11-19

1995-03-28

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219107, B23K 1100

Patent

active

054019338

ABSTRACT:
A method is disclosed for welding an end plug to an open end of a surface-coated tube in order to provide a control rod. First, the end plug is brought into pressed abutment with the open end of the surface-coated tube. Then, resistance welding is performed in order to join the end plug with the open end of the surface-coated tube by applying electric current between the surface-coated tube and the end plug to heat the same while keeping the end plug pressed in abutment with the open end of the surface-coated tube. With these procedures, even when a surface-coated tube having a hard coating formed over its entire length is employed, the coating material is prevented from dissolving into the welded portion and therefore ensures an excellent welding quality, and the resulting control rod exhibits excellent characteristics over its entire length.

REFERENCES:
patent: 4097712 (1978-06-01), Bezold
patent: 4663510 (1987-05-01), Ritter

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