| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.16 ( June 1987 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Development of Machine Diagnostic Apparatus
for Threaders and Upsetters of Tubes Tadashi Okamura, Yutaka Funyu, Toshihisa Tane |
| Synopsis: Machine diagnosis techniques in the OCTG finishing line, especially those on the threading machine and tube upsetter, are necessary for quality control and improvement. This paper mainly describes the diagnosis logic. For the threading machine, we developed the "ratio change method" of each power spectrum according to the threading phase. For the upsetter, we developed the "pattern change method" for both upsetting force and displacement. Conventional operations will be shifted to more scientific operations by these diagnosis techniques in the OCTG finishing line. |
| TextiPDF: 8p./360kbj |