TUBE EXPANSION METHOD Russian patent published in 2000 - IPC

Abstract RU 2158645 C2

FIELD: plastic metal working, possibly in aircraft construction, ship building and relating industry branches. SUBSTANCE: method comprises steps of simultaneously placing two tubular blanks on rod and simultaneously pushing them onto punch; using outer blank with length more than that of inner blank; before pushing filling free space at side of punch between end of inner tubular blank, rod and outer tubular blank with lubricant. EFFECT: enhanced manufacturing possibilities of operation for expanding tube ends. 1 dwg

Similar patents RU2158645C2

Title	Year	Author	Number
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RU 2 158 645 C2

Authors

Mar'In B.N.

Ivanov Ju.L.

Shport V.I.

Odinokov V.I.

Makarov K.A.

Dates

2000-11-10—Published

1998-08-05—Filed