Title:
管の肉厚測定位置決定方法および管のコラプス強度予測方法
Document Type and Number:
Japanese Patent JP7006331
Kind Code:
B2
Abstract:
To provide a wall thickness measuring position determination method in which a pipe shape can be modelled with precision using a minimal amount of wall thickness measuring data.SOLUTION: Provided is a pipe wall thickness measuring position determination method that is a method for determining wall thickness measuring points in measuring the wall thickness of a pipe at plural points in a circumferential direction for a vertical cross section in an axial direction of the pipe. The method includes the steps of: (1) determining a thickness deviation degree N of the pipe, when an angle θ (°) is formed by a straight line connecting an arbitrary wall thickness measuring point with an axis center, and a straight line connecting another wall thickness measuring point adjacent to the arbitrary wall thickness measuring point with the axis center; and (2) determining a wall thickness measuring point so as to attain a range satisfying 4°≤θ≤60°/N.SELECTED DRAWING: Figure 11
Inventors:
Ryota Higuchi
Takanori Tanaka
Takanori Tanaka
Application Number:
JP2018018027A
Publication Date:
January 24, 2022
Filing Date:
February 05, 2018
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B21C51/00; B21B38/04
Domestic Patent References:
| JP2002349177A | ||||
| JP2001293503A | ||||
| JP2017113790A | ||||
| JP2015138001A | ||||
| JP2015078890A |
Foreign References:
| WO2004080623A1 |
Attorney, Agent or Firm:
Patents corporation Blitas
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