在普通液压式粉末成形机上压制成形同步器齿毂压坯的过程中，对压坯常见的裂缝进行了剖析，并提出了避免裂缝的措施，以提高其批产合格率。
Compact cracks in guide pieces caused by ordinary hydraulic forming press have been analyzed. Countermeasure to avoid cracks has been proposed for improving the qualification rate in mass production.
本研究测定的48批次样品，合格率为75%。
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