Research on Technology of Aluminum Alloy Bolster Assembly Welding for Rail Vehicle
Due to the welding deformation of the aluminum alloy bolster,the flatness of bolster is out of tolerance,which is difficult to repair.In the process of bolster assembly welding,this paper put forward a new process concept of preheating the bolster as a whole,preseted anti-deformation longitudinally during the welding process,and formulated a new process flow of bolster assembly welding,the process was applied through the electric heating furnace heating technology.Production practice showed that the new process overcomed the disadvantage of the pressure limit value of the tooling positioning pressing device due to the increase of preset anti-deformation,and greatly reduced the difficulty of preset anti-deformation before welding of the bolster;the overall electric heating of bolster made the preheating temperature on the reverse side of the bolster uniform,which reduced the chance of welding defects,and the flatness of the reverse side of the bolster reached the expected value of the process by presetting reasonable anti-deformation,guaranteed the product quality greatly,reduced the difficulty of the bolster adjustment after welding,and improved the production efficiency.
bolster assembly weldingwelding deformationpreset anti-deformationthe electric heating furnace heating technology
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