SU398637A1 - Method of deoxidation of steel doped - Google Patents

Method of deoxidation of steel doped

Info

Publication number
SU398637A1
SU398637A1 SU1735061A SU1735061A SU398637A1 SU 398637 A1 SU398637 A1 SU 398637A1 SU 1735061 A SU1735061 A SU 1735061A SU 1735061 A SU1735061 A SU 1735061A SU 398637 A1 SU398637 A1 SU 398637A1
Authority
SU
USSR - Soviet Union
Prior art keywords
aluminum
deoxidation
metal
steel
doped
Prior art date
Application number
SU1735061A
Other languages
Russian (ru)
Inventor
А. Ф. Филиппов Л. К. Косырев М. М. Клюев В. С. Лактионов И. Н. Мелькумов И. С. нишников В. В. Топилин Е. Н. Банденков В. Т. Логинов
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to SU1735061A priority Critical patent/SU398637A1/en
Application granted granted Critical
Publication of SU398637A1 publication Critical patent/SU398637A1/en

Links

Landscapes

  • Treatment Of Steel In Its Molten State (AREA)

Description

Изобретение относитс  к электрометаллургии стали, в частности к производству стали, легированной азотом.This invention relates to electrometallurgy of steel, in particular to the production of steel alloyed with nitrogen.

Известен способ раскислени  стали, легированной азотом, заключаюпдийс  во вводе алюмини  в период рафинировани  за 10-60 мин до выпуска плавки.A known method of deoxidizing steel doped with nitrogen, concludes with the introduction of aluminum during the refining period 10-60 minutes before the release of smelting.

Однако наличие остаточных концентраций алюмини  при разливке в стал х и сплавах, легированных азотом, приводит к образованию стойких нитридов, а присутствие оксидных включений алюмини  - к по влению строчечных включений.However, the presence of residual concentrations of aluminum during casting in steels and alloys doped with nitrogen leads to the formation of persistent nitrides, and the presence of oxide inclusions of aluminum leads to the appearance of line inclusions.

С целью снижени  содержани  в металле неметаллических включений и кислорода и уменьшени  расхода легирующих по предложенному способу алюминий дают на шлак или в металл в период рафинировани  за 10-60 мин до выпуска металла из печи в течение 5-40 мин порци ми, содержащими 0,02-0,30% алюмини  от веса расплава, с интервалом между ними 3-30 мин.In order to reduce the content in the metal of non-metallic inclusions and oxygen and reduce the consumption of alloying materials according to the proposed method, aluminum is supplied to slag or to the metal during the refining period 10-60 minutes before the metal is released from the furnace for 5-40 minutes in portions containing 0.02 -0.30% aluminum by weight of the melt, with an interval of between 3-30 minutes.

По предложенному способу вводимый алюминий окисл етс  в результате взаимодействи  с кислородом металла, шлака и атмосферы печи. При этом алюминий поддерживаетAccording to the proposed method, the introduced aluminum is oxidized as a result of interaction with the oxygen of the metal, slag and furnace atmosphere. At the same time, aluminum supports

22

низкий окислительный потенциал металла и шлака, окислы алюмини  всплывают в шлак. Образующиес  в начальный период нитриды алю.мини  при выдержке расплава окисл ютс  (распадаютс ). Врем  выдержки расплава после введени  последней порции алюмини  10-40 мин достаточно дл  полного окислени  алюмини , что предотвращает образование нитридов. Выбор размера порций и интервала между ними определ етс  необходимостью поддержани  низкого окпслительного потенциала металла и шлака без значительных нотерь азота из расплава с нитридами алюмини , которые могут также всплыть.low oxidation potential of metal and slag, aluminum oxides float to slag. The aluminum min nitrides formed in the initial period during the aging of the melt are oxidized (decompose). The holding time of the melt after the introduction of the last portion of aluminum 10-40 minutes is sufficient for the complete oxidation of aluminum, which prevents the formation of nitrides. The choice of the size of the portions and the interval between them is determined by the need to maintain a low oxidative potential of the metal and slag without significant nitrogen losses from the melt with aluminum nitrides, which can also float.

Предмет изобретени Subject invention

Способ раскислени  стали, легированной азотом, заключающийс  во вводе алюмини  в период рафинировани  за 10-60 мин до выпуска плавки, отличающийс  тем, что, с целью спижени  содержани  в металле неметаллических включений и кислорода и уменьшени  расхода легирующих, алюминий ввод т в течение 5-40 мин порци ми, содержащими 0,02-0,30% алюмини  от веса расплава, с интервалом между порци ми 3-30 мин.The method of deoxidizing steel doped with nitrogen, which consists in introducing aluminum during the refining period 10-60 minutes before the release of smelting, characterized in that, in order to reduce the metal content of non-metallic inclusions and oxygen and reduce the consumption of alloying, aluminum is introduced over 5 40 min portions containing 0.02-0.30% aluminum by weight of the melt, with an interval between portions of 3-30 min.

SU1735061A 1972-01-06 1972-01-06 Method of deoxidation of steel doped SU398637A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1735061A SU398637A1 (en) 1972-01-06 1972-01-06 Method of deoxidation of steel doped

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1735061A SU398637A1 (en) 1972-01-06 1972-01-06 Method of deoxidation of steel doped

Publications (1)

Publication Number Publication Date
SU398637A1 true SU398637A1 (en) 1973-09-27

Family

ID=20499294

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1735061A SU398637A1 (en) 1972-01-06 1972-01-06 Method of deoxidation of steel doped

Country Status (1)

Country Link
SU (1) SU398637A1 (en)

Similar Documents

Publication Publication Date Title
SU398637A1 (en) Method of deoxidation of steel doped
GB1169874A (en) Method of Producing Low Carbon Non-Aging Deep Drawing Steel
SU435290A1 (en) METHOD OF MODIFICATION OF STEEL AND ALLOYS
SU423852A1 (en) METHOD OF MODIFICATION OF STEEL AND ALLOYS
SU448233A1 (en) The method of alloying steel with vanadium
SU438714A1 (en) Method of refining electrothermal ferrophosphorus
SU298681A1 (en) ALLOYS FOR THE DECOMPOSITION, REFINATION AND MODIFICATION OF BLACK METALS
FR2443510A1 (en) Ferrosilicon alloy for deoxidising molten steels - contg. magnesium, calcium and aluminium, to reduce amt. of non-metallic inclusions in steel
SU436862A1 (en) The method of deoxidation of steel and alloys
SU390148A1 (en) METHOD OF MANUFACTURE QUIET CARBON
SU439523A1 (en) Low carbon steel smelting process
SU622852A1 (en) Method of deoxidizing steel
SU532630A1 (en) The method of steelmaking
GB1162389A (en) Improvements in or relating to Processes of Making Steels Having Improved Machining Properties
SU428002A1 (en) METHOD OF STEEL PRODUCTION
SU691098A3 (en) Method of electroslag melting of metals and alloys
SU458592A1 (en) The method of steel and alloys
SU438717A1 (en) Smelting method of low-carbon electrical steel
RU2152440C1 (en) Pig for deoxidation of steel with aluminum
SU460304A1 (en) Method of refining ferrosilicon
SU899664A1 (en) Method for alloying steel and alloys with nitrogen
SU95348A1 (en) Method for producing pig iron with spheroidal graphite
SU403765A1 (en) ALL-UNION. Cl. C 21c 7/06 UDK 669.183 (088.8)
SU1339137A1 (en) Method of steel deoxidation
SU954440A1 (en) Method for vacuum treatment of molten steel