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在厂修C50型敞车时,根据以钢代木的要求,敞车的地板和端、墙板均须改为钢结构。这将显著地增加焊接工作量,每辆车的焊缝长度约450米,需用电焊条约120公斤。其电焊工作量约为整个车体钢结构检修量的37％。这样大的焊接工作量,如不采用合理的工艺方法控制变形,就会严重影响车辆底体架的尺寸精度和结构强度,从而使修车质量下降。由于端、墙板采用预制后组装的方法,对底体架的变形影响很小。本文仅对焊接地板引起的变形进行分析与研究。
In the factory repair C50 gondola, according to the requirements of steel on behalf of wood, gondola floor and end, wall panels must be changed to steel. This will significantly increase the amount of work required for welds, with a weld length of about 450 meters for each vehicle and about 120 kg of welding wire required. The welding workload is about 37% of the whole body steel structure overhaul. Such a large amount of welding work, such as not using a reasonable process control deformation, will seriously affect the vehicle body frame dimensional accuracy and structural strength, so that the quality of the car repair. As the end, wall panels using prefabricated assembly method, the deformation of the body frame has little effect. This article only on the welding floor deformation caused by analysis and research.