rail and rail maintenance
Holland, in cooperation with Sumitomo, implemented a narrow heataffected zone weld along with a web post-weld heat treat process in the Stockton, Calif., long rail plant.
Robot welding
achieved in R&D welds,” said Hefer. “The welding portions are characterized by low visual reactivity with extremely stable weld metal chemistry
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and hardness. Significantly reduced susceptibility for welding defects, such as hot tears, has also been observed with R&D test welds.”
Plasser American Corporation has automated the welding process with its APT 1500 R welding robot, which is available on rail bound, hi-rail truck, or container platforms. The company says this automation rules out operator errors and results in high reliability and documented welds of consistent high quality. The welding head automatically aligns the height and running surface, as well as crowns the rail, while the automatic centering device measures rail alignment via distance transducers located in the weld head. Plasser states that a record of each weld is created and stored and the measurements are saved for quality assurance reasons.
RT&S Track Buyer’s Guide
2017