Distributor tube end former

Details Distributor tube end former Distributor tube end former

1991-06-28

1992-04-14

Ramsey, Kenneth J.

Metal fusion bonding

Process

With shaping

72115, 72125, 2281734, B23K 100, B21C 3716

Patent

active

051040310

ABSTRACT:
A method of forming a joint between a workable tubing of a first diameter and a tubing of a second, larger diameter proceeds with the formation of a bell in the end of the workable tubing. The workable tubing is clamped, with the end of the workable tubing located in a cavity of a die. A mandrel is spun, and inserted into the end of the workable tubing. The mandrel has a pilot tip, and a forming land. The forming land expands the end of the workable tubing as the mandrel is spun. A bell is formed in the workable tubing, which has an outer diameter substantially equal to the inner diameter of the second, larger tubing. The workable tubing is freed from the clamp and die, and the bell is inserted into the second, larger tubing. The two tubes are brazed, without need for a bushing.

REFERENCES:
patent: 1938194 (1933-12-01), Rader
patent: 1998653 (1935-04-01), Briegel
patent: 2005969 (1935-06-01), Cornell
patent: 2346376 (1944-04-01), Heavener

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