山东冶金
山東冶金
산동야금
SHANDONG METALLURY
2013年
5期
6-8
,共3页
裴建华%翟正龙%袁淑君%李小雄
裴建華%翟正龍%袁淑君%李小雄
배건화%적정룡%원숙군%리소웅
钩尾框用钢%热轧圆钢%25MnCrNiMoA%冲击性能%脆性转变温度
鉤尾框用鋼%熱軋圓鋼%25MnCrNiMoA%遲擊性能%脆性轉變溫度
구미광용강%열알원강%25MnCrNiMoA%충격성능%취성전변온도
hook tail frame steel%hot rolled rounds%25MnCrNiMoA%impact property%DBTT
针对钩尾框恶劣的使用条件，对其用钢25MnCrNiMoA的开发制定了严格的技术要求。通过控制钢的化学成分，采用合理的冶炼（电炉→LF→VD）、连铸、轧制工艺，获得了纯净的钢质和良好的组织，检验表明，圆钢屈服强度≥750 MPa，抗拉强度≥890 MPa，脆性转变温度为-50℃，目前已形成小批量生产，产品质量稳定可靠，各项性能指标满足技术协议及客户使用要求。
針對鉤尾框噁劣的使用條件，對其用鋼25MnCrNiMoA的開髮製定瞭嚴格的技術要求。通過控製鋼的化學成分，採用閤理的冶煉（電爐→LF→VD）、連鑄、軋製工藝，穫得瞭純淨的鋼質和良好的組織，檢驗錶明，圓鋼屈服彊度≥750 MPa，抗拉彊度≥890 MPa，脆性轉變溫度為-50℃，目前已形成小批量生產，產品質量穩定可靠，各項性能指標滿足技術協議及客戶使用要求。
침대구미광악렬적사용조건，대기용강25MnCrNiMoA적개발제정료엄격적기술요구。통과공제강적화학성분，채용합리적야련（전로→LF→VD）、련주、알제공예，획득료순정적강질화량호적조직，검험표명，원강굴복강도≥750 MPa，항랍강도≥890 MPa，취성전변온도위-50℃，목전이형성소비량생산，산품질량은정가고，각항성능지표만족기술협의급객호사용요구。
According to the bad using condition of hook tail frame, the strict technical requirements of developing 25MnCrNiMoA steel for hook tail frame was made. By controlling the chemical composition and adopting reasonable processes (EAF→LF→VD→CC→CR), developed 25MnCrNiMoA steel have high cleanliness and good microstructure. The test showed that the yield strength (Rp0.2)≥750 MPa, the Rm≥890 MPa and the ductile brittle transition temperature(DBTT) is-50℃. At present, the 25MnCrNiMoA steel has formed a small batch production, the product quality is stable and reliable, and each performance index meets the technical agreement and customer requirements.
