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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： | A. O., Okonkwo; F. C., Robles Hernandez |
| 关键词： | Cladding; Cracking; Defects; Heat Affected Zone (haz); Laser Cladding; Laser Materials; Powder Composition; Railroad Tracks; Thermite Field Welds; Transportation Safety; Welded Rail |
| 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. |
| 报告类型： | 科技报告 |
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