简介了空气锤锤砧锤模联接方式改进前后的使用状况。

The brief introduction involves the operational performances of the pneumatic hammer before and after modification of the anvil-die connection.

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液压支架中的缸底生产批量不是太大，外形多变，所以它多在锤上用镶块模开式模锻成形。

So, it is always formed on the die-forging hammer by the open-die forging with insert mode.

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