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Laser Cladding of Welds to Improve Railroad Track Safety.
| 题名： | Laser Cladding of Welds to Improve Railroad Track Safety. |
| 作者： | Robles Hernandez, F. C.; Okonkwo, A. O. |
| 关键词： | Laser materials, Railroad tracks, Transportation safety, Cladding, Welded rail, Defects, Cracking, Powder composition, Laser cladding, Thermite field welds, Heat Affected Zone (HAZ), Test welds |
| 摘要： | The purpose of this project was to explore the use of a laser-based technology, laser cladding, to reduce surface and near-surface defects resulting from thermite field welds of rail. Thermite field welds are often used to splice together continuous welded rail segments or to replace damaged sections of rail. Thermite welds, however, often experience plastic deformation, or batter, along the heat affected zone (HAZ) of the weld. The objective of this project was to develop a procedure to prevent excessive plastic deformation along the HAZ by means of laser cladding coatings. Such a procedure has the potential to increase the life of thermite field welds and thereby reduce track maintenance costs and enhance rail safety. |
| 总页数： | Robles Hernandez, F. C.; Okonkwo, A. O. |
| 报告类型： | 科技报告 |
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