山东冶金
山東冶金
산동야금
SHANDONG METALLURY
2015年
1期
6-8,10
,共4页
张开广%童明伟%陈颜堂%范巍%郑静
張開廣%童明偉%陳顏堂%範巍%鄭靜
장개엄%동명위%진안당%범외%정정
高层建筑用钢%Q420GJC%性能%金相组织%屈强比
高層建築用鋼%Q420GJC%性能%金相組織%屈彊比
고층건축용강%Q420GJC%성능%금상조직%굴강비
high construction steel%Q420GJC%performance%microstructure%yield/tension ratio
利用Nb、Ti等元素微合金化，配合控轧控冷工艺，开发了低屈强比、高强度Q420GJC钢。对其工业性试制钢板进行了拉伸、冲击、组织结构检验及焊接性能试验，结果显示，研制的钢种组织为铁素体+珠光体且铁素体比例占50%以上，具有优良的综合性能，屈强比≤0.81，Rm≥560 MPa，满足高层建筑用钢技术要求，已成功实现工程应用。
利用Nb、Ti等元素微閤金化，配閤控軋控冷工藝，開髮瞭低屈彊比、高彊度Q420GJC鋼。對其工業性試製鋼闆進行瞭拉伸、遲擊、組織結構檢驗及銲接性能試驗，結果顯示，研製的鋼種組織為鐵素體+珠光體且鐵素體比例佔50%以上，具有優良的綜閤性能，屈彊比≤0.81，Rm≥560 MPa，滿足高層建築用鋼技術要求，已成功實現工程應用。
이용Nb、Ti등원소미합금화，배합공알공랭공예，개발료저굴강비、고강도Q420GJC강。대기공업성시제강판진행료랍신、충격、조직결구검험급한접성능시험，결과현시，연제적강충조직위철소체+주광체차철소체비례점50%이상，구유우량적종합성능，굴강비≤0.81，Rm≥560 MPa，만족고층건축용강기술요구，이성공실현공정응용。
The new high-rise buildings steel Q420GJC with low yield/tension ratio and high strength were developed using Nb-Ti microalloying as well as controlled rolling and cooling process. The performances of the tensile, impact, microstructure and welding of the steel were tested. The results showed that the microstructure of the steel is composed of more than 50%ferrite and pearlite, the steel has excellent comprehensive properties:the yield/tension ratio is less than 0.81, the Rm is more than 560 MPa and can meet the requirements of high-rise buildings structure steel. The steel has been successfully implemented in engineering.
