Method of spin-welding

Details Method of spin-welding Method of spin-welding

1987-02-25

1988-07-19

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

156 735, 264150, 264229, 264248, B29C 4700, B29C 6506

Patent

active

047583924

ABSTRACT:
An end component 3 is spin-welded into the cut end of an extruded tube 1 with the application of axial pressure but without the application of radial pressure to the weld area. The radial forces required to create a weld are provided by hoop stresses which are formed in the tube by shock-cooling the tube as it emerges from the extrusion die. When the tube is cut, the hoop stresses cause the cut end of the tube to contract radially prior to insertion of the end component. To assist in insertion of the end component, a cylindrical skirt thereof 4 is provided with a chamfered end 9.

REFERENCES:
patent: 3120570 (1964-02-01), Kennedy et al.
patent: 3538595 (1970-11-01), Barnes
patent: 3982980 (1976-09-01), Van Manen
patent: 4353761 (1982-10-01), Woerz et al.

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