| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.25 ( September 1991 ) Special Issue on 'H-Shapes with Fixed Outer Dimension' and 'Steel Pipe' ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Development of On-line Wall Thickness Gauge for Small Size Seamless Tubes Tadashi Okumura, Norio Konya, Hiromu Oka, Toshiaki Kasuya |
|
Synopsis : Recently, seamless tube has been expanding its application fields. Accordingly customers want further improvement in accuracy of tube dimensions. In order to improve the wall thickness accuracy of small-sized seamless tube, an on-line wall thickness gauge has been developed right after the stretch reducing mill as a finishing rolling mill. This wall thickness gauge is a full-automatic measuring system requiring no size change. A measuring principle has been established for tube as three dimensional material using Α-rays. This development has also made clear an optimal signal processing method on the statistical noise of Α-rays. Now, the wall thickness gauge is in smooth operation and is useful to rolling control by operators. |
| TextiPDF: 6p./263kbj |