Are crankshafts cast or forged?

Cast crankshafe is one-time shaping process, while forged crankshaft need to be forged many times. And further heat treatment processes are also not the same. From the side of internal organization,th

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Cast crankshafe is one-time shaping process, while forged crankshaft need to be forged many times. And further heat treatment processes are also not the same. From the side of internal organization,the performance of forged crankshaft is more stable than that of cast ctankshaft.

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