Defect analysis in cylinder sleeve with high performance by centrifugal casting in metallic mold is made. Measure to technological improvement and effect obtained are introduced.

对金属型离心铸造高性能气缸套的缺陷进行了分析，介绍了工艺改进措施及取得的效果。

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The disc wall defect is treated with a laser and radiofrequency probe. The foramen and nerves are inspected to confirm successful decompression. The instruments and sleeve are removed.

椎间盘壁的缺损处用激光或射频探头处理。检查椎间孔和神经，确认减压充分。去除工具和工作套管。

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The air entrapment of the liquid metal flow in the shot sleeve during the slow shot phase is one of the factors resulting in this kind of defect.

气孔是压铸生产中的常见问题，导致这一缺陷的原因之一就是在慢压射过程中压室内的金属液流动卷入了气体。

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