观察和分析了液态模锻钢平法兰热裂纹的形貌与组织特征.发现裂纹一旦形成,其扩展经历四个阶段,表现为裂纹开展面上具有四个明显的特征区、裂纹的扩展程度与钢液质量、凝固条件及制件受力状态等工艺因素有关
The morphology and feature of hot cracks in liquid forged steel flat frangeshave been observed. Once the cracks occur, they will propagate throguh 4 stages, and revealthemselves obviously as 4 featured zones. The growth of the hot cracks seems to be depen-dent upon certain technological factors, such as: liquid steel quality, solidification and stressedstate on workpieces, etc.
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