Sealing mechanical tube joints

Details Sealing mechanical tube joints Sealing mechanical tube joints

1980-11-17

1984-06-12

Rosenbaum, Mark

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29523, 291574, 29460, 159 91, 159 92, 285382, 2853824, 2853827, 2853822, B23P 1526

Patent

active

044533012

ABSTRACT:
A method of making leak-tight tube joints, in a non-brazed tubular heat exchanger or the like, including the steps of expanding tube ends out into mechanical contact with a header plate in which they are received, and, in conjunction with this step, introducing a sealant into tube joints. According to one invention aspect, the sealant has the form of a relatively ductile elastomeric or metallic material and is introduced into a joint as a coating on a tube end. In another invention aspect, the sealant has the form of an anaerobic adhesive and is introduced into the joint as a liquid by a capillary action for subsequent curing in the hidden crevices and voids of the joint.

REFERENCES:
patent: 2389175 (1945-11-01), Woods
patent: 3628923 (1971-12-01), White
patent: 3781966 (1974-01-01), Lieberman
patent: 4152818 (1979-05-01), Mort et al.
patent: 4172496 (1979-10-01), Melnyk

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