RAIL ULTRASONIC FLAW DETECTION TOOL, ULTRASONIC FLAW DETECTION METHOD OF RAIL HEAD SIDE PART, RAIL QUALITY ASSURANCE METHOD, AND RAIL MANUFACTURING METHOD

• Main Authors: FUJII HISASHI, TOKUNAGA KAZUYA
• Format: Patent
• Language: English; Japanese
• Published: 29.08.2019
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

To provide a rail ultrasonic flaw detection tool, an ultrasonic flaw detection method of a rail head side part, a rail quality assurance method, and a rail manufacturing method which can stably perform ultrasonic flaw detection on a head side part of a rail.SOLUTION: A rail ultrasonic flaw detection tool 1 includes: a head side part facing portion 2 which is loaded on a head side part 71b of a rail 70, and which fixes a probe 50 of an ultrasonic flaw detection unit in a manner that an ultrasonic oscillation surface 51 contacts with a head side surface 71ba of the head side part 71b; a middle part facing portion 3 loaded on a middle part 73 of the rail 70; and a connection portion 4 for connecting the head side part facing portion 2 and the middle part facing portion 3.SELECTED DRAWING: Figure 3 【課題】レールの頭側部の超音波探傷を安定して行うことができるレール用超音波探傷治具、レールの頭側部の超音波探傷方法、レールの品質保証方法、及びレールの製造方法を提供する。【解決手段】レール用超音波探傷治具１は、レール７０の頭側部７１ｂ上に載置されるとともに、超音波発振面５１が頭側部７１ｂの頭側面７１ｂａに接触するように超音波探傷器の探触子５０を固定する頭側部対向部分２と、レール７０の腹部７３上に載置される腹部対向部分３と、頭側部対向部分２と腹部対向部分３とを接続する接続部分４とを備えている。【選択図】図３