有色金属科学与工程2023，Vol.14Issue(6)：816-824,9.DOI:10.13264/j.cnki.ysjskx.2023.06.009
新型MG700高强锚杆用钢控轧控冷工艺研究
Research on the controlled rolling and controlled colling processes of steel for new MG700 high-strength anchor steel
摘要
Abstract
Based on the thermal simulation and phase transformation tests,the reasonably controlled rolling and controlled cooling processes of vanadium microalloyed MG700 high-strength anchor steel were designed.The details were as follows.For the controlled rolling processes,rough and intermediate rolling at 970～1 050℃ and finishing rolling at 800～840℃ were adopted.For the controlled cooling processes,water cooling was adopted between intermediate rolling and finishing rolling,the final cooling temperature was controlled at 820～850℃and air cooling was used after finishing rolling.The above industrial trial results showed that the yield strength of MG700 anchor steel was stable at 720～760 MPa,its tensile strength was stable at 885～925 MPa,its elongation after fracture was stable at 17.5％～19.0％ so that its comprehensive mechanical properties were excellent.The microstructure of MG700 anchor steel was mainly composed of ferrite and pearlite.The range of ferrite grain diameter was between 0.60 μm and 13.64 μm with an average diameter of about 3.86 μm.The mechanical properties and microstructure characteristics of the newly developed MG700 high-strength anchor steel met the requirements of the relevant standards for anchor steel in the coal industry,which could provide theoretical support and practical experiences for the development of similar products.关键词
MG700锚杆钢/合金化/控轧控冷/力学性能Key words
MG700 anchor steel/alloying/thermo-mechanical control process/mechanical properties分类
矿业与冶金引用本文复制引用
张红旭,王奇凯,任志峰,潘丽芳,刘光明,王敏..新型MG700高强锚杆用钢控轧控冷工艺研究[J].有色金属科学与工程,2023,14(6):816-824,9.基金项目
中央引导地方科技发展资金资助项目(YDZJSX2022C028) （YDZJSX2022C028）
