任利国,傅万堂,张皓,周岩,温瑞洁,赵德利,王宝忠

• 1:亚稳材料制备技术与科学国家重点实验室
• 2:燕山大学材料科学与工程学院
• 3:天津重型装备工程研究有限公司
• 4:中国第一重型机械股份公司

摘要(Abstract)：

采用电渣重熔钢锭，经开坯锻造后，通过热挤压制备高品质坯料，随后在专用模具内进行胎模锻造成形，研制出国内首支外径15.5米、重量15吨的快堆支撑环1/6弧段316H不锈钢锻件，突破了超大规格快堆支撑环锻件制造技术瓶颈。结果表明：锻件各部位晶粒度、拉伸性能均匀一致且无各向异性，疲劳性能完全满足ASME设计曲线标准要求。所采用的近净成形制造工艺大大缩短了产品制造周期，提高了经济效益，实现了同类产品的国产化制造。

关键词(KeyWords)： 316H不锈钢锻件;晶粒度;拉伸性能;疲劳性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 任利国,傅万堂,张皓,周岩,温瑞洁,赵德利,王宝忠

DOI: 10.13289/j.issn.1009-6264.2023-0554

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