|
|
|
| TUDY AND PRACTICE OF HIGH-SPEED HEAVY RAIL WELDABILITY OF QINSHEN DEDICATED PASSENGER LINE |
| YANG Lai-shun1，OU Yang-quan2, XUE Hong-xi3 |
| 1 Chemical and Metallurgical Research Institute，China Academy of Railway Sciences;2 New Line Operation Divison, The First Engineering Bureau of China Railway; 3Track and Bridge Division，The Third Engineering Bureau of China Railway |
|
|
|
|
Abstract High-speed railway asks for strict criteria of chemical composition, physical mechanics and size deviation of rails. It also asks for superior quality of welding joint of the CWR on extra long seamless tracks. The paper，based on great number of tests carried out for rail butt weld technology, studies the weldability of high-speed heavy type mould casting PD3 steel rail made by Panzhihua Steel Mill and the gang-mould casting PD3 60 kg/m steel rail made by AnshanSteel Mill. The study has improved the quality of the rails to meet with the technical requirement of the Standard of Rail Welding Industry and the Technical Specifications of 200 km/h Rails of MOR. The random check of welds in the production base shows that the quality of weld is reliable and the property is stable.
|
|
Received: 24 June 2002
|
|
|
|
|
|
[1]童大埙.铁路轨道[M]，北京:中国铁道出版社,1988.
[2]陈伯兹.金属焊接性基础[M].北京:机械工业出版社， 1983.
[3]候启孝，候松明.接触焊轨参数逐次正交优化及其CAD [J ].铁道学报,1998,20(5).
[4]丁成钢.陈春焕，史春元.钢轨闪光对焊接头断裂的组织研究，大连铁道学报，1999,(4).
[5]邵扬道，王树青.等. 50 kg/m钢轨接触焊缝电感应正火的研究[R].铁道学会第三次金属材料及热处理学术年会论文，l 987.
|
|
|
|
2002, Vol. 19 
