大壁厚X70-X80站场用钢的研制
Development of Heavy Thickness X70-X80 Plate for Pump Station
李少坡1, 姜中行1, 白学军2, 麻庆申1
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作者单位:(1. 首钢技术研究院, 北京 100043; 2. 秦皇岛首秦金属材料有限公司, 河北 秦皇岛 066326)
中文关键字:站场用钢; 大壁厚; X70; X80; 组织形态
英文关键字:plate for pump station; heavy thickness; X70; X80; microstructure morphology
中文摘要:根据“西气东输二线”站场用钢的技术条件,首钢采用合理的成分设计和严格的控轧控冷工艺,成功开发出具有良好低温韧性的大壁厚X70-X80站场用热轧钢板。产品组织形态以细小均匀的针状铁素体为主,具有高强度、高韧性、低屈强比和良好的低温止裂韧性,用其制成的直缝埋弧焊钢管应用于“西气东输二线”站场工程。
英文摘要:According to the technical specifications of the plate for pump station of “The 2nd West-East Pipeline Project”, the heavy thickness X70-X80 plate with good toughness was developed. An acicular ferrite microstructure was obtained. The plate possesses high strength, high toughness, low ratio of Rt0.5 /Rm and excellent low temperature properties, the pipe made from the plate was applied to the pump station of “The 2nd West-East Pipeline Project ”.