在本研究中，采用线切割沿热轧钢板横向切取直径为8mm的比例拉伸试样，在配备电加热炉的万能拉伸试验机上，将拉伸试样加热至600℃保温3小时之后，按照国标GB/T 228.2-2015的标准进行高温拉伸试验，测得钢板的高温屈服强度值，抗拉强度为478MPa，屈服强度为419MPa。

In this study, linear cutting was used to transverse cut the 8mm diameter proportional tensile sample along the hot rolled steel plate. After heating the tensile sample to 600℃ for 3 hours on a universal tensile test machine equipped with an electric heating furnace, high-temperature tensile test was conducted according to the national standard GB/T 228.2-2015 to measure the high-temperature yield strength of the steel plate. The tensile strength is 478MPa and the yield strength is 419MPa.