Tube sheet welding
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United States of America Patent
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-
Jun 7, 1988
Grant Date -
N/A
app pub date -
Apr 1, 1986
filing date -
Apr 1, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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