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Development of on-line wall thickness gauge for small size seamless tube. Shokei seamless netsukan nikuatsukei no kaihatsu

Journal Article:

Abstract

In order to heighten the accuracy of small size seamless tube wall thickness, hot wall thickness gauge was developed to be installed, immediately behind the finishing/rolling mill, for the on-line measurement, of which the method was by the parallel-beam transmissivity of gamma-ray. The measurement unit, aiming at flexible manufacturing system (FMS), is completely automated in correcting the accuracy, changing the sizes, etc. The damping characteristics of gamma-ray beam can be expressed by a characteristic function, taking the outside diameter and wall thickness of subject tube as parameters. The functional calculation, as based on measurement of transmitted quantity of gamma-ray through the three-dimensional steel material, changes, depending upon the outside diameter, wall thickness and material specification of subject tube. System was so applied as to calculate it therefore on a case-by-case basis. Though in the vicinity of tube end, the transmitted quantity of gamma-ray is largely influenced by the horizontal dislocation, that influence is slack in the middle part of tube. Therefore, the cross sectional division was made dense and sparse in the end part and middle part, respectively of tube, which division could diminish the error from several percent to less than 0.1%. The static noise was compressed by the  More>>
Authors:
Okumura, T; Konya, N; Oka, H; Kasuya, T [1] 
  1. Kawasaki Steel Corp., Tokyo (Japan)
Publication Date:
Mar 01, 1991
Product Type:
Journal Article
Reference Number:
NEDO-91-920101; EDB-91-093769
Resource Relation:
Journal Name: Kawasaki Seitetsu Giho (Kawasaki Steelmaking Technical Report); (Japan); Journal Volume: 22:4
Subject:
36 MATERIALS SCIENCE; 47 OTHER INSTRUMENTATION; RADIOMETRIC GAGES; GAMMA RADIATION; THICKNESS GAGES; IN-SERVICE INSPECTION; ON-LINE MEASUREMENT SYSTEMS; PROCESS CONTROL; TUBES; ROLLING; SIZE; STEELS; ALLOYS; CONTROL; ELECTROMAGNETIC RADIATION; FABRICATION; INSPECTION; IONIZING RADIATIONS; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS WORKING; MEASURING INSTRUMENTS; ON-LINE SYSTEMS; RADIATIONS; 360101* - Metals & Alloys- Preparation & Fabrication; 440800 - Miscellaneous Instrumentation- (1990-)
OSTI ID:
5555615
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: ISSN 0368-7236; CODEN: KWSGB
Submitting Site:
NEDO
Size:
Pages: 48-52
Announcement Date:

Journal Article:

Citation Formats

Okumura, T, Konya, N, Oka, H, and Kasuya, T. Development of on-line wall thickness gauge for small size seamless tube. Shokei seamless netsukan nikuatsukei no kaihatsu. Japan: N. p., 1991. Web.
Okumura, T, Konya, N, Oka, H, & Kasuya, T. Development of on-line wall thickness gauge for small size seamless tube. Shokei seamless netsukan nikuatsukei no kaihatsu. Japan.
Okumura, T, Konya, N, Oka, H, and Kasuya, T. 1991. "Development of on-line wall thickness gauge for small size seamless tube. Shokei seamless netsukan nikuatsukei no kaihatsu." Japan.
@misc{etde_5555615,
title = {Development of on-line wall thickness gauge for small size seamless tube. Shokei seamless netsukan nikuatsukei no kaihatsu}
author = {Okumura, T, Konya, N, Oka, H, and Kasuya, T}
abstractNote = {In order to heighten the accuracy of small size seamless tube wall thickness, hot wall thickness gauge was developed to be installed, immediately behind the finishing/rolling mill, for the on-line measurement, of which the method was by the parallel-beam transmissivity of gamma-ray. The measurement unit, aiming at flexible manufacturing system (FMS), is completely automated in correcting the accuracy, changing the sizes, etc. The damping characteristics of gamma-ray beam can be expressed by a characteristic function, taking the outside diameter and wall thickness of subject tube as parameters. The functional calculation, as based on measurement of transmitted quantity of gamma-ray through the three-dimensional steel material, changes, depending upon the outside diameter, wall thickness and material specification of subject tube. System was so applied as to calculate it therefore on a case-by-case basis. Though in the vicinity of tube end, the transmitted quantity of gamma-ray is largely influenced by the horizontal dislocation, that influence is slack in the middle part of tube. Therefore, the cross sectional division was made dense and sparse in the end part and middle part, respectively of tube, which division could diminish the error from several percent to less than 0.1%. The static noise was compressed by the optimized digital filter. That gauge is presently applied for the operational administration of small size seamless tube rolling. 2 refs., 11 figs., 2 tabs.}
journal = {Kawasaki Seitetsu Giho (Kawasaki Steelmaking Technical Report); (Japan)}
volume = {22:4}
journal type = {AC}
place = {Japan}
year = {1991}
month = {Mar}
}