MANUFACTURING METHOD OF SEAMLESS HOT-ROLLED TUBES ON PIPE ROLLING UNITS WITH PILGER MILLS FOR STEAM BOILERS, STEAM LINES AND HEADERS OF UNITS WITH HIGH AND SUPERCRITICAL STEAM PARAMETERS

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...

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Hauptverfasser: NIKITIN KIRILL NIKOLAEVICH, SAF'JANOV ANATOLIJ VASIL'EVICH, DUDKA GRIGORIJ ANATOL'EVICH, OSADCHIJ VLADIMIR JAKOVLEVICH, KLIMOV NIKOLAJ PETROVICH, FEDOROV ALEKSANDR ANATOL'EVICH, BUBNOV KONSTANTIN EHDUARDOVICH, TARARAKSIN GEORGIJ KONSTANTINOVICH, SHMAKOV EVGENIJ JUR'EVICH, SKOROBOGATYKH VLADIMIR NIKOLAEVICH, SAF'JANOV ALEKSANDR ANATOL'EVICH, MATJUSHIN ALEKSANDR JUR'EVICH
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creator NIKITIN KIRILL NIKOLAEVICH
SAF'JANOV ANATOLIJ VASIL'EVICH
DUDKA GRIGORIJ ANATOL'EVICH
OSADCHIJ VLADIMIR JAKOVLEVICH
KLIMOV NIKOLAJ PETROVICH
FEDOROV ALEKSANDR ANATOL'EVICH
BUBNOV KONSTANTIN EHDUARDOVICH
TARARAKSIN GEORGIJ KONSTANTINOVICH
SHMAKOV EVGENIJ JUR'EVICH
SKOROBOGATYKH VLADIMIR NIKOLAEVICH
SAF'JANOV ALEKSANDR ANATOL'EVICH
MATJUSHIN ALEKSANDR JUR'EVICH
description 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 Изобретение относится к трубопрокатному и металлургическому производствам. Полые слитки-заготовки ЭШП нагревают до температуры пластичности и прокатывают на пилигримовом стане. Прокатку производят в валках с диаметром бочки 1150 мм с получением труб размером 610×32-90 или 630×28-80 мм. Разность между внутренним диаметром полого слитка-заготовки и диаметром дорна при прокатке труб с отношением диаметра к толщине стенки D/S≥18 принимают равной 10-15 мм, а при отношении D/S≤18 - равной 15-20 мм. Прокатку труб с отношением D/S≥15 производят с коэффициентом полировки 3,0-3,5, а труб с отношением D/S≤15 - с коэффициентом полировки 2,5-3,0. Обеспечивается снижение поперечной и продольной разностенности, снижение расходного коэффициента металла. 1 з.п. ф-лы, 1 табл.
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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 Изобретение относится к трубопрокатному и металлургическому производствам. Полые слитки-заготовки ЭШП нагревают до температуры пластичности и прокатывают на пилигримовом стане. Прокатку производят в валках с диаметром бочки 1150 мм с получением труб размером 610×32-90 или 630×28-80 мм. Разность между внутренним диаметром полого слитка-заготовки и диаметром дорна при прокатке труб с отношением диаметра к толщине стенки D/S≥18 принимают равной 10-15 мм, а при отношении D/S≤18 - равной 15-20 мм. Прокатку труб с отношением D/S≥15 производят с коэффициентом полировки 3,0-3,5, а труб с отношением D/S≤15 - с коэффициентом полировки 2,5-3,0. Обеспечивается снижение поперечной и продольной разностенности, снижение расходного коэффициента металла. 1 з.п. ф-лы, 1 табл.</description><language>eng ; rus</language><subject>MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL ; PERFORMING OPERATIONS ; PUNCHING METAL ; ROLLING OF METAL ; TRANSPORTING</subject><creationdate>2015</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20150410&amp;DB=EPODOC&amp;CC=RU&amp;NR=2545942C2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20150410&amp;DB=EPODOC&amp;CC=RU&amp;NR=2545942C2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NIKITIN KIRILL NIKOLAEVICH</creatorcontrib><creatorcontrib>SAF'JANOV ANATOLIJ VASIL'EVICH</creatorcontrib><creatorcontrib>DUDKA GRIGORIJ ANATOL'EVICH</creatorcontrib><creatorcontrib>OSADCHIJ VLADIMIR JAKOVLEVICH</creatorcontrib><creatorcontrib>KLIMOV NIKOLAJ PETROVICH</creatorcontrib><creatorcontrib>FEDOROV ALEKSANDR ANATOL'EVICH</creatorcontrib><creatorcontrib>BUBNOV KONSTANTIN EHDUARDOVICH</creatorcontrib><creatorcontrib>TARARAKSIN GEORGIJ KONSTANTINOVICH</creatorcontrib><creatorcontrib>SHMAKOV EVGENIJ JUR'EVICH</creatorcontrib><creatorcontrib>SKOROBOGATYKH VLADIMIR NIKOLAEVICH</creatorcontrib><creatorcontrib>SAF'JANOV ALEKSANDR ANATOL'EVICH</creatorcontrib><creatorcontrib>MATJUSHIN ALEKSANDR JUR'EVICH</creatorcontrib><title>MANUFACTURING METHOD OF SEAMLESS HOT-ROLLED TUBES ON PIPE ROLLING UNITS WITH PILGER MILLS FOR STEAM BOILERS, STEAM LINES AND HEADERS OF UNITS WITH HIGH AND SUPERCRITICAL STEAM PARAMETERS</title><description>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 Изобретение относится к трубопрокатному и металлургическому производствам. Полые слитки-заготовки ЭШП нагревают до температуры пластичности и прокатывают на пилигримовом стане. Прокатку производят в валках с диаметром бочки 1150 мм с получением труб размером 610×32-90 или 630×28-80 мм. Разность между внутренним диаметром полого слитка-заготовки и диаметром дорна при прокатке труб с отношением диаметра к толщине стенки D/S≥18 принимают равной 10-15 мм, а при отношении D/S≤18 - равной 15-20 мм. Прокатку труб с отношением D/S≥15 производят с коэффициентом полировки 3,0-3,5, а труб с отношением D/S≤15 - с коэффициентом полировки 2,5-3,0. 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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 Изобретение относится к трубопрокатному и металлургическому производствам. Полые слитки-заготовки ЭШП нагревают до температуры пластичности и прокатывают на пилигримовом стане. Прокатку производят в валках с диаметром бочки 1150 мм с получением труб размером 610×32-90 или 630×28-80 мм. Разность между внутренним диаметром полого слитка-заготовки и диаметром дорна при прокатке труб с отношением диаметра к толщине стенки D/S≥18 принимают равной 10-15 мм, а при отношении D/S≤18 - равной 15-20 мм. Прокатку труб с отношением D/S≥15 производят с коэффициентом полировки 3,0-3,5, а труб с отношением D/S≤15 - с коэффициентом полировки 2,5-3,0. Обеспечивается снижение поперечной и продольной разностенности, снижение расходного коэффициента металла. 1 з.п. ф-лы, 1 табл.</abstract><oa>free_for_read</oa></addata></record>
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subjects MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
title MANUFACTURING METHOD OF SEAMLESS HOT-ROLLED TUBES ON PIPE ROLLING UNITS WITH PILGER MILLS FOR STEAM BOILERS, STEAM LINES AND HEADERS OF UNITS WITH HIGH AND SUPERCRITICAL STEAM PARAMETERS
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