Explosive welding of a tube into a tube sheet

Patent · Sun Jan 01 00:00:00 EST 1978

OSTI ID:863194

Green, Sheryll C.; Linse, Vonne D.

A cartridge containing an explosive charge is placed within a tube assembled within a tube sheet. The charge is detonated through use of a detonator cord containing a minimum but effective amount of explosive material. The cord is contained inside a tubular shield throughout most of its length within the cartridge. A small length of the cord extends beyond the tubular shield to contact and detonate the explosive charge in its rear portion near the cartridge base. The cartridge base is provided of substantial mass and thickness in respect to side and front walls of the cartridge to minimize bulging beyond the rear face of the tube sheet. For remote activation an electrically activated detonator of higher charge density than the cord is attached to the cord at a location spaced from the tube sheet, cartridge and tube.

• Research Organization: Battelle Memorial Institute, Columbus, OH (United States)
• Sponsoring Organization: US Energy Research and Development Administration (ERDA)
• DOE Contract Number: W-7405-ENG-92
• Assignee: United States of America as represented by United States Department of Energy (Washington, DC)
• Patent Number(s): 4,117,966
• Application Number: 05/841614
• OSTI ID: 863194
• Resource Relation: Patent File Date: 1977 Oct 13
• Country of Publication: United States
• Language: English

Related Subjects

explosive
welding
tube
sheet
cartridge
containing
charge
placed
assembled
detonated
detonator
cord
minimum
effective
amount
material
contained
inside
tubular
shield
throughout
length
extends
contact
detonate
rear
portion
near
base
provided
substantial
mass
thickness
respect
front
walls
minimize
bulging
remote
activation
electrically
activated
density
attached
location
spaced
explosive material
effective amount
tube sheet
explosive charge
front wall
location spaced
contained inside
/228/29/