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Impact toughness of high strength low alloy TMT reinforcement ribbed bar
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| | Comparing with hot-rolled bar, cold-rolled ribbed bar, a new high efficiency steel developed abroad in past decades, can reduce material consumption up to 20%. Its equipment and technique of production in both F. R. G. and Italy, as well as the characteristics, performances and standard, are introduced. | | 冷轧螺纹钢筋是国外近几十年发展起来的一种新型高效钢材。与热轧钢材相比,它可节约材料20%左右,主要用于建筑工业。本文介绍了这种产品的特点、性能和技术标准,并介绍了联邦德国和意大利两国冷轧螺纹钢筋生产的工艺与装备。 | | 文摘来源 | | The present paper discussed the behaviour of yield free occuring during the tests onClass-ⅡMn-Si ribbed bar indicating that the method for calculation of the reference yield point σ_susing yield ratio and tensile strength is both theoretically and technologically applicable to the checking and inspection on the products of the plant on condition that all other properties of the ribbed barare in conformance to the specified standards. | | 阐述了20MnSiⅡ级螺纹钢筋拉伸试验中的无屈服现象,提出在钢筋其他各项性能指标均合格的前提下,从屈强比值,利用抗拉强度计算参考屈服点σ'_s的办法,对工厂中日常的生产检验而言,从理论上、技术上都应是可行的。 | | 文摘来源 | | When smelting super high strength dented ribbed bar steel with electric arc furnace,gas content in steel is apt to the high side and thus influences the steel quality on hydrogen brittleness and aging. Through degassing by argon injection into ladle,however,We have improved the quality of steel and satisfied the performance needs of steel products. | | 用电弧炉冶炼超高强度凹间纹钢,钢中气体含量易偏高而造成氢脆和时效,从而影响钢的质量。通过冶炼工艺,采用钢包吹氩等措施,改善了钢的质量,满足了钢材的性能要求。 | | 文摘来源 | |   | | << 更多相关文摘 |
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