Method for calibrating tubular articles

Details Method for calibrating tubular articles Method for calibrating tubular articles

1981-04-10

1982-07-20

Gilden, Leon

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

294205, 72 60, 72 63, 72356, B21D 3908

Patent

active

043399355

ABSTRACT:
An apparatus for calibration of tubular articles, especially cylinder linings for internal combustion engines, manufactured through isostatic compression of pulverulent metallic materials, comprises piston means for effecting an axial displacement between the tubular article and a mandrel which it surrounds during the calibration. Preferably, the tubular article is first subjected to a rather modest radial inwardly directed pressure which is increased after an axial relative movement between the mandrel and the tubular article has taken place.

REFERENCES:
patent: 3719479 (1973-03-01), Flanagan
patent: 4032335 (1977-06-01), Zapf et al.

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