Process for manufacturing ring-type metal joints for high...

Details Process for manufacturing ring-type metal joints for high... Process for manufacturing ring-type metal joints for high...

2007-08-21

2007-08-21

Cozart, Jermie E. (Department: 3726)

Metal working

Method of mechanical manufacture

Obtaining plural product pieces from unitary workpiece

C029S460000, C029S525140, C029S557000

Reexamination Certificate

active

10865377

ABSTRACT:
Improved process for manufacturing ring-type metal joints for high pressure ducts, characterized because it presents the following steps: a) oval bar manufacturing and b) ring-type metal joints manufacturing, wherein the oval bar manufacturing comprises the following steps: submitting a round metal bar to a sharpening treatment before it is drawn through a die and forming the oval bar; cutting, rolling, and bending the oval bar and welding the profile; submitting the joint to an electrolytic coating treatment.

REFERENCES:
patent: 3585832 (1971-06-01), Hinshaw et al.
patent: 3635063 (1972-01-01), Stern et al.
patent: 3660192 (1972-05-01), Smith et al.
patent: 3729790 (1973-05-01), Sugahara
patent: 4270373 (1981-06-01), Hirato et al.
patent: 4397413 (1983-08-01), Wagner et al.

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