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Genesis Analysis and Countermeasures on UST Defect in DID6 Hull Plate
Author(s): 
Pages: 46-49
Year: Issue:  4
Journal: BAOSTEEL TECHNOLOGY

Keyword:  DH36船板超声波探伤厚板;
Abstract: 超声波探伤不合是DH36船板钢的主要缺陷之一.通过低倍酸洗试验、金相分析、断面形貌分析,发现了船板内部缺陷的成因,即钢板中存在过量的氢.分析了造成钢板内部氢致裂纹的原因.为消除DH36船板氢致裂纹,有针对性地提出了以RH精炼为主的全流程控氢、降低板坯偏析程度、采用钢板轧制后缓冷等措施.实施后,氢致缺陷消除,钢板质量明显提高.
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