L450MS+No8825复合不锈钢板轧制工艺研究

在生产试验条件下，采用控轧控冷工艺试制了L450MS管线钢+No8825奥氏体镍基合金复合板。通过加大道次变形量，提高轧后钢板冷却速率，保证了L450MS管线钢综合性能，其屈服强度达484～542 MPa，抗拉强度达544～593 MPa，伸长率达45%～50%，-30℃纵向冲击功达300 J以上，同时No8825奥氏体镍基合金与L450MS管线钢基体复合良好，既保留了不锈钢的耐蚀、耐磨、抗磁性能以及外表美观的特点，又兼具管线钢良好的可焊性、成形性、拉伸性、导热性的特点，提高了设备的抗腐蚀能力，延长了设备的使用寿命，降低了企业生产成本。

Research on rolling technology for L450MS+No8825 clad stainless steel plate

In a production test conditions, L450MS pipeline steel plate+No8825 austenitic nickel- based alloys clad plate was developed by TMCP technology. Through increasing the amount of pass deformation and the cooling rate after rolling of plate, the composite property of L450MS pipeline steel plate was assured, which yield strength was 484-542 MPa, tensile strength was 544-593 MPa, elongation rate was 45%-50% ， and -30 ℃ longitudinal impact energy was more than 300 J. Meanwhile, L450MS pipeline steel plate + No8825 austenitic nickel- based alloys was clad good, not only retained the corrosion resistance, abrasion resistance, anti- magnetic properties as well as aesthetically pleasing features of stainless steel, but also had good weldability, formability, stretch, thermal characteristics of pipeline steel. The corrosion resistance property, service life of equipment were improved, and the production cost was reduced.