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Question:

What is the difference between a fine car and a semi-fine car?

What is the difference between a fine car and a semi-fine car?

Answer:

General parts of the rough size is relatively large, the processing will produce a high temperature, the product in this process will be the principle of thermal expansion and contraction.
Fine car is generally the size of the finished product, and semi-fine car is done for the fine car bedding, under normal circumstances the parts are divided into rough cars, semi-fine cars, and fine cars.
So it must wait for parts to cool after the re-processing.
There is the size of the blank is relatively large, the tool grinding and fine cars are not the same.

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