The Second Of The Traveling Wheel Casting Solutions

Option II:
1. Material: ZG35---42:
2. Processing process
(1) Casting: Casting ensures that the material is uniform and free of pores and blisters, and then annealed.
(2) When rough turning the blank on a lathe, leave a margin of 2~3mm for the inner diameter, and the outer diameter is 6~7mm smaller than the drawing size.
(3) Overlay welding: Preheat the driving wheel in advance to a temperature of 200 degrees, keep it warm for 1 to 2 hours, and then weld it out of the furnace. Use LG834 welding wire + HJ260D flux + SJ102 flux to weld the wheel tread and shoulder to ensure that there are no cracks in the welding layer. , slag inclusions and other defects.
(4) After surfacing welding, perform annealing treatment with a heating temperature of 850~860 degrees, a holding time of 5 hours, and then cooling in the furnace. When the wheel temperature is lower than 300 degrees, it can be air-cooled out of the furnace. (5) The inner and outer diameter dimensions of the fine car are as shown in the figure.