RU2002129186A -
METHOD FOR PREPARING CENTRIFUGALLY BASED PRODUCTS FROM DIFFICULTY DEFORMABLE STEELS AND ALLOYS TO PIPE ROLLING
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METHOD FOR PREPARING CENTRIFUGALLY BASED PRODUCTS FROM DIFFICULTY DEFORMABLE STEELS AND ALLOYS TO PIPE ROLLING
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Publication number
RU2002129186A
RU2002129186ARU2002129186/02ARU2002129186ARU2002129186ARU 2002129186 ARU2002129186 ARU 2002129186ARU 2002129186/02 ARU2002129186/02 ARU 2002129186/02ARU 2002129186 ARU2002129186 ARU 2002129186ARU 2002129186 ARU2002129186 ARU 2002129186A
1. Способ подготовки центробежнолитых заготовок из труднодеформируемых марок стали и сплавов к прокатке труб, включающий механическую обработку (обточку и расточку), отличающийся тем, что центробежнолитые заготовки растачивают на величины, которые зависят от их толщины стенок и диаметров.1. A method of preparing centrifugally cast billets from hard-deformed grades of steel and alloys for pipe rolling, including machining (turning and boring), characterized in that centrifugally cast billets are bored by values that depend on their wall thickness and diameters.2. Способ по п.1, отличающийся тем, что снимаемый слой металла при расточке увеличивают с увеличением толщины стенок и уменьшают с увеличением диаметра центробежнолитых заготовок, величину которого определяют из выражения2. The method according to claim 1, characterized in that the removable metal layer during boring increases with increasing wall thickness and decreases with increasing diameter of centrifugally cast billets, the value of which is determined from the expressionΔS=S·(K1-K2·D/S),ΔS = S · (K 1 -K 2 · D / S),где ΔS - величина снимаемого слоя металла при расточке центробежнолитых заготовок, мм;where ΔS is the magnitude of the removed metal layer during the boring of centrifugally cast billets, mm;S - исходная толщина стенки заготовок, мм;S is the initial wall thickness of the workpieces, mm;D - исходный диаметр заготовок, мм;D is the initial diameter of the workpieces, mm;K1 - коэффициент, уменьшающийся в прямой зависимости от 0,0175 до 0,0165 с увеличением толщины стенок заготовок от 30 до 100 мм;K 1 - coefficient decreasing in direct proportion from 0.0175 to 0.0165 with an increase in the thickness of the walls of the workpieces from 30 to 100 mm;К2 - коэффициент, возрастающий в прямой зависимости от 0,0075 до 0,0125 для заготовок диаметром от 100 до 300 мм и с 0,009 до 0,013 для заготовок диаметром от 350 до 600 мм.K 2 is a coefficient that increases in direct proportion from 0.0075 to 0.0125 for workpieces with a diameter of 100 to 300 mm and from 0.009 to 0.013 for workpieces with a diameter of 350 to 600 mm.
RU2002129186/02A2002-10-312002-10-31Method for preparing centrifugally cast billets of hard-to-form steels and alloys to tube rolling
RU2242303C2
(en)
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