Tube with high dimensional accuracy, and method and device for manufacturing the tube
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United States of America Patent
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N/A
Issued Date -
Oct 5, 2006
app pub date -
Apr 8, 2004
filing date -
Apr 11, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
There are provided a high dimensional accuracy pipe and a manufacturing method thereof, the pipe being in response to wide requirements of sizes, being manufactured at inexpensive cost, and having a sufficient fatigue strength. The detailed structure thereof is as follows. A push-to-pass process is performed in which, while a plug 1 is being charged in a metal pipe 5, the metal pipe is pushed in a hole provided in a die 2 and is then allowed to pass therethrough. As a result, a high dimensional accuracy pipe can be obtained in which at least one of the deviation of the outer diameter, the deviation of the inner diameter, and the deviation of the thickness in the circumferential direction is 3.0% or less as processed.
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