Method of explosively expanding tubes
AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorsHirohiko Yoshitomi, Junji Hashimoto, Taro Kodama, Fujiharu Hirose
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Abstract
This invention provides a method of securing the tube ends of a plurality of explosively expandable metal tubes to a tube plate in which the tubes are inserted utilizing explosive cartridges equipped with a heat sensitive means. The heat sensitive means is in operative proximity to the explosive charges. There are also provided heating means capable of effectively heating the heat sensitive means. Expansion of the tubes located at multiple positions is effected by successively exploding the charges by the application of heat energy to the heat sensitive means.
Claims11
A method of securing the tube ends of a plurality of explosively expandable metallic tubes to a tube plate in which said tubes are inserted, which comprises the steps of:
- 1. inserting a cartridge containing an explosive charge in each of the metallic tubes to be secured to the tube plate, there being heat sensitive means in operative proximity to each of said explosive charges, each of said heat sensitive means having an end portion projecting beyond the tube in which said cartridge is inserted;
- and
- 2.
Dependencies are inferred from the claim text.