• 検索結果がありません。

電縫鋼管用マルチプローブ方式溶接欠陥モニタの開発

N/A
N/A
Protected

Academic year: 2021

シェア "電縫鋼管用マルチプローブ方式溶接欠陥モニタの開発"

Copied!
6
0
0

読み込み中.... (全文を見る)

全文

(1)

川崎製鉄技報

KAWASAKI STEEL GIHO Vol. 22(1990) No.1

電縫鋼管用マルチプローブ方式溶接欠陥モニタの開発

Development of Multiprobe Type Weld Flaw Monitor for ERW Pipe Mill

近藤 広章(Hiroaki Kondo) 奥村 精(Tadashi Okumura) 新司 修(Osamu Shinshi) 要旨 : 電縫鋼管の溶接部(シーム部)の品質を保証する装置として,従来,超音波探傷装置が導 入されている。最近,製造ラインのFA 化が進行しているが,超音波探傷装置においては段 取替時間の短縮およびシームトラッキングを必要としない完全に自動化された探傷装置が 要求されている。検討の結果,新しいコンセプトに基づく探傷方法「マルチプローブ方式」 を考案した。この方式の欠陥検出性能を調査したところ,従来方式と同等以上であること が確認された。マルチプローブ方式溶接欠陥モニタは,知多製造所中径電縫鋼管工場で実 用化されFA 化に寄与している。 Synopsis :

Ultrasonic inspection system has generally been installed for quality assurance of a longitudinal weld line in the ERW pipe mill. Recently, manufacturing lines tend to change to fully automated factory. Accordingly, it is necessary to automate the conventional ultrasonic inspection system with regard to size arrangements, callibration, and to free the ultrasonic inspection line from tracking on the weld line. As a result of research, the authors have created a new-concept-based inspection method that is named the ‘‘Multiprobe method’’. And, the equivalence of inspection accuracy between this new method and the conventional method were confirmed experimentally. This new weld flaw monitor system by the multiprobe method is currently in operation at Kawasaki’s medium diameter ERW pipe mills of Chita Works, thereby contributing to realizing a fully automated manufacturing system.

(c)JFE Steel Corporation, 2003

本文は次のページから閲覧できます。

要約版

(2)
(3)
(4)
(5)
(6)

参照

関連したドキュメント

We derive rigorously a homogenized model for the displacement of one compressible miscible fluid by another in a partially fractured porous reservoir.. We denote by the

Furuta, Log majorization via an order preserving operator inequality, Linear Algebra Appl.. Furuta, Operator functions on chaotic order involving order preserving operator

The idea is that this series can now be used to define the exponential of large classes of mathematical objects: complex numbers, matrices, power series, operators?. For the

4 The maintenance cost which is not considered by traditional model concluding the unscheduled maintenance cost and the wear cost during the operation can be modeled as a function

She reviews the status of a number of interrelated problems on diameters of graphs, including: (i) degree/diameter problem, (ii) order/degree problem, (iii) given n, D, D 0 ,

In particular, realizing that the -graph of the order complex of a product of two posets is obtained by taking the box product of three graphs, one of them being the new shuffle

By applying the method of 10, 11 and using the way of real and complex analysis, the main objective of this paper is to give a new Hilbert-type integral inequality in the whole

The isomorphism class of the module is determined by this Leonard system, which in turn is determined by four parameters: the endpoint, the dual endpoint, the diameter, and