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1. 发明授权

US4605449A Process for producing a rolled steel product having high weldability, a high yield strength and a good notch impact toughness at very low temperatures 失效
标题翻译：具有高焊接性，高屈服强度和极低温下良好的切口冲击韧性的轧制钢产品的制造方法
公开(公告)号：US4605449A
公开(公告)日：1986-08-12
申请号：US695386
申请日：1985-01-28
申请人： Arthur Schummer , Jean de la Hamette , Guy Lessel , Jean-Paul Beck , Armand Frantz
发明人： Arthur Schummer , Jean de la Hamette , Guy Lessel , Jean-Paul Beck , Armand Frantz
IPC分类号： C21D7/13 , C21D8/08 , C21D9/52
CPC分类号： C21D8/08 , C21D7/13
摘要： A process for producing rolled steel products, especially reinforcing rod for concrete or other elements to be encased in concrete and having good weldability, a high yield strength and high energy absorption for the Charpy V impact test at very low temperatures comprising forming a silicon and aluminum containing steel whose carbon content (C), manganese content (MN), and niobium content (NB) are related by the relationship set forth below. The steel blank is rolled so that the last three passes result in more than 20% of the total cross section reduction, these rolling passes are carried out so that the temperature T1 before, the temperature T2 during, and the temperature T3 after rolling are also related to the diameter D in the manner set forth below to yield a high yield strength LE and a high energy absorption expressed as KCV at -120.degree. C. The relationships are:LE=1035+510 C+192 MN+2270 NB-0.21 T1-0.42 T2-0.48 T3-3.51 DandKCV=2202-2066 C+23.20 MN-2064 NB-0.77 T1-1.24 T2-0.23 T3-1.98 D.
摘要翻译：一种制造轧制钢产品的方法，特别是用于混凝土或其他要被包装在混凝土中并且具有良好可焊性的钢筋的加强杆，在非常低的温度下用于夏比V冲击试验的高屈服强度和高能量吸收的方法，包括形成硅和铝碳含量（C），锰含量（MN）和铌含量（NB）的含碳钢通过下述关系相关。钢坯被轧制，使最后三次通过导致总横截面减少的20％以上，这些轧制通过进行，使得轧制前的温度T1，温度T2和轧制之后的温度T3也是以下列方式与直径D相关，以产生高屈服强度LE和在-120℃下表示为KCV的高能量吸收。关系是：LE = 1035 + 510C + 192MN + 2270 NB-0.21 T1-0.42 T2-0.48 T3-3.51 D和KCV = 2202-2066 C + 23.20 MN-2064 NB-0.77 T1-1.24 T2-0.23 T3-1.98 D.

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