摘要
分析了大直径连轧管机芯棒的使用条件,提出了连轧管机芯棒用钢的化学成分,芯棒热处理工艺和芯棒表面镀铬层质量控制措施。研制出的芯棒用H13钢的主要理化指标符合北美压铸协会NADCA207-2006《优质和超级H13钢材和热处理验收》标准对优质热作模具钢的质量要求。芯棒的组织、性能、寿命均达到了国际先进水平,其制造成本比进口芯棒降低了28%左右。
Operational conditions of the mandrel of the large-sized MPM are analyzed,resulting in determi-nation of the MPM mandrel-purpose steel,the heat treatment process for the mandrel and control measures for quality of the mandrel surface chromium-coating. The main physiochemical targeted values of the H13 Steel as developed for making the said MPM mandrel have been up to the requirements for quality of the hot-work die steel as specified under Specification NADCA 207-2006——Quality Super H13 Steel and Heat Treatment A cceptance. As a result, the structure, properties and service span of the mandrel have also been up to relevant advanced international level, whereas manufacture cost thereof is 28% lower than that of the imported ones.
出处
《钢管》
CAS
2009年第5期67-69,共3页
Steel Pipe
基金
国家发明专利3项(申请号:200910059502.0等)
实用新型专利3项(申请号:200920081475.2等)
关键词
大直径连轧管机
芯棒
成套制造加工
使用效果
Large-sized MPM
Mandrel
Package production
Operational effectiveness
