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Question:

How is the train wheel made?

How is the train wheel made?

Answer:

Beyond my professional range, do not understand ah. Need to please bogie professional for two.
This need to go to Taiyuan, the wheel of the factory to look at the field to answer.
I remember the casting and then use the lathe to tread the car into the exact size, and perhaps also heat treatment, do not understand the mechanical aspects of the limited knowledge only so much.

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