Research on Production Technology of R260Mn European Standard Steel Rail
R260Mn belongs to the European standard hot-rolled steel rails,with product performance indicators similar to R260,and can be used as high-speed train rails.According to the requirements of EN13674.1-2011 standard,the main performance indicators of R260Mn product include tensile strength ≥ 880 MPa,elongation A ≥ 10％,and rail tread center hardness(HBW)range of 260～300.In terms of oxide cleanliness,when the order quantity is less than 5 000 tons,95％of the samples have an oxide cleanliness K3 value of less than 10.Through theoretical analysis and comparison of production inspection data,the composition design range of R260Mn steel rails has been preliminarily determined,and a production technology plan that meets customer standard requirements has been formed through small-scale production,finished product performance inspection and verification during the production process.
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