大型铸锻件
大型鑄鍛件
대형주단건
HEAVY CASTING AND FORGING
2013年
5期
35-37,44
,共4页
大型钢锭%铸造缺陷%非金属夹杂物%粗大晶粒
大型鋼錠%鑄造缺陷%非金屬夾雜物%粗大晶粒
대형강정%주조결함%비금속협잡물%조대정립
heavy ingot%casting defects%nonmetallic inclusions%coarse grains
主要研究了380 t级30Cr2Ni4MoV钢大型钢锭的铸造缺陷状况。通过对水口部位解剖材料进行金相分析，掌握了钢锭铸造缺陷的类型及形貌。实验结果表明，30Cr2Ni4MoV钢大型钢锭的典型铸造缺陷主要表现为非金属夹杂物和粗大晶粒，缺陷尺寸达到毫米级别。此外，在水口材料的显微组织中还观察到了不同程度的缩孔和疏松。
主要研究瞭380 t級30Cr2Ni4MoV鋼大型鋼錠的鑄造缺陷狀況。通過對水口部位解剖材料進行金相分析，掌握瞭鋼錠鑄造缺陷的類型及形貌。實驗結果錶明，30Cr2Ni4MoV鋼大型鋼錠的典型鑄造缺陷主要錶現為非金屬夾雜物和粗大晶粒，缺陷呎吋達到毫米級彆。此外，在水口材料的顯微組織中還觀察到瞭不同程度的縮孔和疏鬆。
주요연구료380 t급30Cr2Ni4MoV강대형강정적주조결함상황。통과대수구부위해부재료진행금상분석，장악료강정주조결함적류형급형모。실험결과표명，30Cr2Ni4MoV강대형강정적전형주조결함주요표현위비금속협잡물화조대정립，결함척촌체도호미급별。차외，재수구재료적현미조직중환관찰도료불동정도적축공화소송。
The casting defects of 380tlevel 30Cr2Ni4MoV heavy ingot are researched in the paper .The type and morphology of casting defects are obtained by metallographic analysis of the materials dissected from the casting nozzle . The experimental results show that the typical casting defects of 30Cr2Ni4MoV heavy ingot are millimeter level non-metallic inclusions and coarse grains .Moreover , various degrees of shrinkage cavities and porosities can be observed in the microstructure of nozzle material .
