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首页> 外国专利> METHOD hot rolled seamless pipe size 610 × 630 × 32-90 and 28-80 mm on pipe-rolling installation with pilger for steam boilers, steam pipelines and manifolds applications with high and supercritical steam parameters

METHOD hot rolled seamless pipe size 610 × 630 × 32-90 and 28-80 mm on pipe-rolling installation with pilger for steam boilers, steam pipelines and manifolds applications with high and supercritical steam parameters

机译：方法采用皮尔格轧制的热轧无缝管，尺寸为610×630×32-90和28-80 mm，用于具有高和超临界蒸汽参数的蒸汽锅炉，蒸汽管道和歧管应用

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FIELD: metallurgy.;SUBSTANCE: hollow electroslag remelting cakes are heated to ductility temperature and rolled on a pilger mill. Rolling is performed in rolls with a body diameter of 1150 mm so that tubes with dimensions of 610×32-90 or 630×28-80 mm are obtained. Difference between inner diameter of a hollow cake and diameter of a mandrel at tube rolling with the ratio of diameter to thickness of the wall of D/S≥18 is assumed as equal to 10-15 mm, and at D/S≤18 ratio it is equal to 15-20 mm. Tube rolling with D/S≥15 ratio is performed using a polishing coefficient of 3.0-3.5, and for tubes with D/S≤15 ratio -with polishing coefficient of 2.5-3.0.;EFFECT: reducing transverse and longitudinal thickness variation and reducing metal consumption coefficient.;2 cl, 1 tbl
机译：领域：冶金;物质：将空心电渣重熔饼加热至延展温度，并在皮尔杰轧机上轧制。在具有1150mm的主体直径的辊中进行轧制，从而获得尺寸为610×32-90或630×28-80mm的管。 D / S≥18的壁厚与壁厚之比的空心管内径与心轴直径之差假定为10-15 mm，D / S≤18时它等于15-20毫米。 D / S≥15的管材轧制使用的抛光系数为3.0-3.5，D / S≤15的管材轧制的抛光系数为2.5-3.0;效果：减小横向和纵向厚度变化并减小金属消耗系数。; 2 cl，1 tbl

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