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1. 发明专利

JPS59182919A Production of high-tensile low-alloy steel pipe 失效
标题翻译：生产高强度低合金钢管
公开(公告)号：JPS59182919A
公开(公告)日：1984-10-17
申请号：JP5646683
申请日：1983-03-31
申请人： Sumitomo Metal Ind Ltd
发明人： YAMAMOTO TAISHI , KUBOTA MINORU , KATOU SHINICHIROU , TAGUCHI NORIMICHI
IPC分类号： C22C38/00 , C21D8/10
CPC分类号： C21D8/10
摘要： PURPOSE:To produce stably a high-tensile low-alloy seamless steel pipe exhibiting high strength of 95-120kgf/mm. tensile strength at a good yield by heating a high-tensile low-alloy steel regulated in component compsn. in accordance with a conventional method and subjecting the steel to piercing, rolling then reheating and finish rolling in a specific finishing temp. range. CONSTITUTION:A high-tensile alloy steel contg., by wt%, 0.30-0.45 C, 0.10-0.50 Si, 1.30-2.00 Mn, 0.60-1.50 Cr, 0.30-0.80 Ni, 0.15-0.50 Mo, 0.05-0.40 V, 0.20- 0.50 Cu, 0.010-0.080 SolAl, 0.0020-0.0200 N and unavoidable impurities regulated respectively in content to a specific value or below is prepd. Such alloy steel is heated in accordance with the conventional method and is subjected to piercing and rolling and thereafter the steel is once cooled to
摘要翻译：目的：通过加热组分组成中调节的高拉伸低合金钢，稳定生产高强度95-120kgf / mm的高强度低合金无缝钢管，良好的拉伸强度。根据常规方法，并对钢进行穿孔，轧制，然后在特定的精轧温度下进行再加热和精轧。范围。构成：高强度合金钢，重量％，0.30-0.45℃，0.10-0.50Si，1.30-2.00Mn，0.60-1.50Cr，0.30-0.80Ni，0.15-0.50Mo，0.05-0.40V， 0.20〜0.50Cu，0.010-0.080 SolAl，0.0020-0.0200N，并且将含量分别规定为特定值以下的不可避免的杂质制备。这种合金钢根据常规方法被加热并进行穿孔和轧制，然后钢被冷却至<= 650℃，然后再加热至奥氏体化温度。为950-1050摄氏度再加热后的合金钢管在精轧温度下进行精轧。为860-900℃，由此可以得到所需的高拉伸低合金钢管。

2. 发明专利

JPS59179717A Manufacture of high-tension low-alloy steel pipe with high weldability 失效
标题翻译：具有高可焊性的高强度低合金钢管的制造
公开(公告)号：JPS59179717A
公开(公告)日：1984-10-12
申请号：JP5245083
申请日：1983-03-30
申请人： Sumitomo Metal Ind Ltd
发明人： YAMAMOTO TAISHI , KUBOTA MINORU , KATOU SHINICHIROU , TAGUCHI NORIMICHI
IPC分类号： C22C38/00 , C21D1/28 , C21D9/08
CPC分类号： C21D1/28
摘要： PURPOSE:To manufacture a high-tension low-alloy steel pipe with superior weldability by subjecting a low-alloy steel pipe contg. specified percentages of C, Si, Mn, Cr, Mo and V to heating, normalizing and tempering under specified conditions. CONSTITUTION:A low-alloy steel pipe consisting of 0.25-0.35% C, 0.40-0.80% Si, 0.40-1.00% Mn, 0.9-1.60% Cr, 0.30-0.70% Mo, 0.10-0.40% V and the balance Fe is heated to about 900-950 deg.C to austenitize the structure. The pipe is normalized at 3,000-6,500 deg.C/hr cooling rate, and it is tempered at 500-650 deg.C. A high-tension low-alloy steel pipe having favorable surface properties, high dimensional accuracy and superior tensile strength such as >=120kg/mm. is obtd.
摘要翻译：目的：通过低合金钢管接头制造出具有优异焊接性能的高压低合金钢管。规定的C，Si，Mn，Cr，Mo和V的百分比加热，在规定条件下正火和回火。构成：由0.25-0.35％C，0.40-0.80％Si，0.40-1.00％Mn，0.9-1.60％Cr，0.30-0.70％Mo，0.10-0.40％V和余量为Fe组成的低合金钢管是加热至约900-950℃以奥氏体化结构。管道以3000-6,500度/小时冷却速度归一化，并在500-650℃回火。具有良好的表面性能，高尺寸精度和优异的拉伸强度如> = 120kg / mm。<2>的高压低合金钢管。

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