RU2004138416A - METHOD FOR RESTORING PIG-IRON ROLLING ROLLS WITH DAMAGED NECK - Google Patents

METHOD FOR RESTORING PIG-IRON ROLLING ROLLS WITH DAMAGED NECK Download PDF

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Publication number
RU2004138416A
RU2004138416A RU2004138416/02A RU2004138416A RU2004138416A RU 2004138416 A RU2004138416 A RU 2004138416A RU 2004138416/02 A RU2004138416/02 A RU 2004138416/02A RU 2004138416 A RU2004138416 A RU 2004138416A RU 2004138416 A RU2004138416 A RU 2004138416A
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RU
Russia
Prior art keywords
layers
rolling rolls
pig
restoring
neck
Prior art date
Application number
RU2004138416/02A
Other languages
Russian (ru)
Other versions
RU2281846C1 (en
Inventor
Владимир Васильевич Гейер (RU)
Владимир Васильевич Гейер
Владимир Сергеевич Овчинников (RU)
Владимир Сергеевич Овчинников
ткин Роман Викторович В (RU)
Роман Викторович Вяткин
Владимир Константинович Колобов (RU)
Владимир Константинович Колобов
паев Олег В чеславович Т (RU)
Олег Вячеславович Тяпаев
Александр Иванович Трайно (RU)
Александр Иванович Трайно
Original Assignee
Открытое акционерное общество "Северсталь" (RU)
Открытое акционерное общество "Северсталь"
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Application filed by Открытое акционерное общество "Северсталь" (RU), Открытое акционерное общество "Северсталь" filed Critical Открытое акционерное общество "Северсталь" (RU)
Priority to RU2004138416/02A priority Critical patent/RU2281846C1/en
Publication of RU2004138416A publication Critical patent/RU2004138416A/en
Application granted granted Critical
Publication of RU2281846C1 publication Critical patent/RU2281846C1/en

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  • Arc Welding In General (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Claims (1)

Способ восстановления чугунных прокатных валков с поврежденными шейками, включающий механический съем поврежденного слоя, многослойную электродуговую наплавку вращаемого валка по месту съема с подачей стального проволочного электрода в зону сварки и последующее самопроизвольное охлаждение наплавленной шейки, отличающийся тем, что первые три-четыре слоя наплавки производят проволочным электродом из стали аустенитного класса при окружной скорости вращения валка 25...30 м/ч, плотности электрического тока 40...60 А/мм2 и напряжением на дуге 30...34 В, а остальные слои наплавляют проволочным электродом перлитного класса с окружной скоростью вращения валка 30...40 м/ч, плотности электрического тока 60...80 А/мм2 и напряжением на дуге 30...34 В, причем температуру шейки поддерживают на первых трех-четырех слоях не выше 300°С, а на последующих слоях не выше 450°С.A method of recovering cast iron rolling rolls with damaged necks, including mechanical removal of the damaged layer, multilayer arc welding of the rotatable roll at the place of removal with the supply of a steel wire electrode to the welding zone and subsequent spontaneous cooling of the weld neck, characterized in that the first three or four layers of surfacing are made by wire an electrode made of austenitic steel at a peripheral roll speed of 25 ... 30 m / h, electric current density of 40 ... 60 A / mm 2 and arc voltage 3 0 ... 34 V, and the remaining layers are fused with a pearlite-grade wire electrode with a peripheral roll speed of 30 ... 40 m / h, an electric current density of 60 ... 80 A / mm 2 and an arc voltage of 30 ... 34 C, the neck temperature being maintained on the first three or four layers no higher than 300 ° C, and on subsequent layers no higher than 450 ° C.
RU2004138416/02A 2004-12-27 2004-12-27 Method for restoring cast iron rolling rolls with damaged journals RU2281846C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2004138416/02A RU2281846C1 (en) 2004-12-27 2004-12-27 Method for restoring cast iron rolling rolls with damaged journals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2004138416/02A RU2281846C1 (en) 2004-12-27 2004-12-27 Method for restoring cast iron rolling rolls with damaged journals

Publications (2)

Publication Number Publication Date
RU2004138416A true RU2004138416A (en) 2006-06-10
RU2281846C1 RU2281846C1 (en) 2006-08-20

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RU2004138416/02A RU2281846C1 (en) 2004-12-27 2004-12-27 Method for restoring cast iron rolling rolls with damaged journals

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103192224A (en) * 2013-04-20 2013-07-10 韶关市龙润工业技术有限公司 Metallurgical continuous casting machine roller repairing method
CN115283942A (en) * 2022-06-28 2022-11-04 重庆大学 Roller manufacturing and repairing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103192224A (en) * 2013-04-20 2013-07-10 韶关市龙润工业技术有限公司 Metallurgical continuous casting machine roller repairing method
CN115283942A (en) * 2022-06-28 2022-11-04 重庆大学 Roller manufacturing and repairing method

Also Published As

Publication number Publication date
RU2281846C1 (en) 2006-08-20

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