Shrinkage and dispersed shrinkage are the special waster of ductile iron.

缩孔和缩松是球墨铸铁特有的废品现象.

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Dispersed shrinkage is the main reason causing leakage of cylinder block of 4 DA 1.

缩松缺陷是导致4DA1型发动机气缸体螺栓孔渗漏的主要原因.

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Dispersed shrinkage is the main reason causing leakage of multi - cylinder heads of diesel engines.

摘要缩松缺陷是导致多缸柴油机缸盖铸件渗漏的主要原因.

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There are defects such as wash, blowhole, dispersed shrinkage in the butterfly type valve.

蝶阀体铸件存在冲砂 、 气孔 、 缩孔等缺陷.

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Stomatal dispersed shrinkage, shrinkage cavity, sonim and slag inclusion belong to this kind of defect.

属于这种类型的缺陷有气孔、缩松 、 缩孔 、 夹砂、夹渣等.

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