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首页> 外文会议>Iron Steel Supplement 2005 vol.40: The Joint International Conference of HSLA Steels 2005 and ISUGS 2005 >The Application of Microalloyed HSLA Steel in the Russian Construction Industry
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The Application of Microalloyed HSLA Steel in the Russian Construction Industry

机译：微合金HSLA钢在俄罗斯建筑业中的应用

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Actually civil, industrial and transportation constructions in Russia ask for a big variety of properties: ①Steel plates with yield strength of ≥ 345 or ≥ 390 MPa and thickness up to 100 mm are the common materialsapplied for welded constructions. ②In order to guarantee a crack free weldment the reduction of area in thickness direction Ψ_z ≥ 35% is specified as well as a carbon equivalent CE ≤ 0,42-0,45%. ③The reliability and safety of a steel construction is guaranteed by the toughness of the steel. According to new technical standards the Charpy-V-notch impact toughness increased from 29 up to 69 J/cm~2 and the testing temperature decreased to a minus 60°C. ④For some structures (e.g. multi storage buildings) requirements on fire resistance are also common. Traditional steels do not provide this combination of technical requirements and new steel grades of steel and processing technologies in steelmaking and rolling had to be introduced. By use of the naturally alloyed iron (from chromium, nickel and cobalt containing iron ore), modern steel-making technologies, niobium microalloying and thermomechanical rolling or normalizing adequate mechanical, technological and service properties have been achieved. Compared to traditional steel the impact toughness at low temperatures increased by a factor of 2 to 5, the impact toughness of the weldment by a factor of 4 and the fire resistance by a factor of 2 to 3 times. Furthermore, the ductile to brittle fracture transition temperature got lowered from minus 20 down to minus 70°C. Several unique structures have been made using these modern steels including multi storage buildings (up to 340m), automobile and railway bridges with a span width up to 408 m over the rivers Ob, Kama, Don, Volga, Voronezh and Amur; bridge structures at Moscow Ring Road, the covering the shopping mall 'Gostinniy Dvor', the stand of stadium 'Locomotive' in Moscow, industrial buildings in Yakutia, etc.
机译：实际上，俄罗斯的民用，工业和运输建筑要求多种性能：①屈服强度≥345或≥390 MPa且厚度最大为100 mm的钢板是用于焊接结构的常用材料。 ②为了保证无裂纹的焊缝，规定了厚度方向Ψ_z≥35％的面积减小，碳当量CE≤0.42-0.45％。 ③钢的坚韧性保证了钢结构的可靠性和安全性。根据新技术标准，夏比-V型缺口的冲击韧性从29提高到69 J / cm〜2，测试温度降低到负60°C。 ④对于某些结构（例如多层存储建筑物），耐火性要求也很普遍。传统钢无法提供技术要求的组合，因此必须引入新的钢种以及炼钢和轧制中的加工技术。通过使用天然合金铁（含铬，镍和钴的铁矿石），现代炼钢技术，铌微合金化和热机械轧制，或实现了正常的机械，工艺和使用性能正常化。与传统钢相比，低温下的冲击韧性提高了2到5倍，焊件的冲击韧性提高了4倍，耐火性提高了2到3倍。此外，韧性至脆性断裂的转变温度从负20降低到负70℃。使用这些现代钢制成了几种独特的结构，包括多层存储建筑物（最大340m），跨过鄂毕河，卡马河，唐河，伏尔加河，沃罗涅日河和阿穆尔河的跨度最大为408 m的汽车和铁路桥梁;莫斯科环城公路上的桥梁结构，购物商场“ Gostinniy Dvor”，莫斯科体育场“ Locomotive”的展台，雅库特的工业建筑等。

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