高炭素鋼の溶接継手に関する基礎的研究(第4報) -レール溶接継手の疲れ特性について-

概要

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In order to make a long rail of high carbon steel for railroad, about 300m long rails are prepared in shop of JNR by flash butt welding. After that enclosed are welding or telmit welding are used in the field but in some case only enclosed are welding is used to build up a long rail. The life of heat-treated rail is three to five times of as rolled rail. Today, commonly speaking, only as rolled rails are used to make a long rail. However, heat-treated long rails are desired at private railways. Therefore, fatigue characteristics of both as rolled and heat-treated rails are investigated and the latter showed better fatigue properties. Impact properties of as rolled rails are reported in the previous report and those of heat-treated rails are investigated now. Impact properties of heat-treated rails seem to be better than those of as rolled ones. These results will be reported in the next paper.
津山工業高等専門学校の論文
1978-10-20