Tube sheet welding

Details Tube sheet welding Tube sheet welding

B - Operations, Transporting

21

D

78/44

B21D 39/04 (2006.01) B21D 39/06 (2006.01)

Patent

CA 1272892

ABSTRACT OF THE INVENTION An improved method for the explosive expansion and welding of tubes to tube sheet includes trepanning the rear face of the tube sheet to form integral collars around each tube-receiving bore in the tube sheet. The collars prevent accumulation of corrosive material in a gap between the tube and tube sheet bore, and provide support to the tube wall when the tube is explosively expanded beyond the region of the tube surrounded by the collar.

532562

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