SU1424947A1 - Method of working semikilled steel being cast - Google Patents
Method of working semikilled steel being cast Download PDFInfo
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- SU1424947A1 SU1424947A1 SU864182390A SU4182390A SU1424947A1 SU 1424947 A1 SU1424947 A1 SU 1424947A1 SU 864182390 A SU864182390 A SU 864182390A SU 4182390 A SU4182390 A SU 4182390A SU 1424947 A1 SU1424947 A1 SU 1424947A1
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Abstract
Изобретение относитс к черной металлургии , в частности к обработке жидкого металла во врем разливки в изложницы. Цель изобретени - улучшение структуры стали. Обработку стали провод т магниевым шламом в количестве 0,0005-0,0025% от массы стали, начина с одной третьей наполнени изложницы по высоте и заканчива при наполнении двух третей изложницы .The invention relates to ferrous metallurgy, in particular to the processing of molten metal during casting into molds. The purpose of the invention is to improve the structure of the steel. The steel treatment is carried out with magnesium sludge in an amount of 0.0005-0.0025% by weight of steel, starting with one third of the height of the mold and ending with the filling of two thirds of the mold.
Description
N3N3
4 СО 4 4 CO 4
Изобретение относитс к черной металлургии , а именно к обработке полуспокойной стали во врем разливки в изложницы.The invention relates to ferrous metallurgy, in particular to the processing of semi-quiescent steel during casting into molds.
Целью изобретени вл етс улучшение структуры стали.The aim of the invention is to improve the structure of the steel.
Способ осуществл етс следующим образом.The method is carried out as follows.
В процессе разливки стали в изложницу после наполнени ее на 1/3 высоты и не позднее 2/3 высоты изложницы ввод т магниевый щлам в количестве 0,0005- 0,0025% от массы стали. Магниевый шлам, содержащий галогены, имеет следующий состав мас.%: магний 5-50; MgCl2 5-15; MgO 10-20; NaCl, KCl, CaClj. 15-25.In the process of steel casting, after filling it to 1/3 of the height and no later than 2/3 of the height of the mold, magnesium gaps in the amount of 0.0005-0.0025% by weight of steel are introduced. Magnesium sludge containing halogens, has the following composition in wt.%: Magnesium 5-50; MgCl2 5-15; MgO 10-20; NaCl, KCl, CaClj. 15-25.
При введении магниевого шлама в полуспокойную сталь резко снижаетс выделение пузырьков окиси углерода вследствие уменьшени концентрации кислорода в расплаве, в то же врем возрастает выделение пузырьков хлор дов магни , натри , кали и каль10When magnesium sludge is introduced into quiescent steel, the release of carbon monoxide bubbles decreases dramatically due to a decrease in the oxygen concentration in the melt, while the release of bubbles of magnesium, sodium, potassium and calcium chlorides increases.
1515
Предложенный способ обработки полуспокойной стали при разливке позвол ет улучщить качество слитка за счет снижени содержаний неметаллических включений в среднем в 1,5 раза, уменьшени величины усадочных дефектов в головной части слитка и повышени выхода годного металла в прокатке на 0,5-0,7%.The proposed method of treating semi-quiescent steel during casting allows improving the quality of the ingot by reducing the content of non-metallic inclusions by an average of 1.5 times, reducing the size of shrinkage defects in the head part of the ingot and increasing the yield of the suitable metal in rolling by 0.5-0.7% .
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU864182390A SU1424947A1 (en) | 1986-11-18 | 1986-11-18 | Method of working semikilled steel being cast |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU864182390A SU1424947A1 (en) | 1986-11-18 | 1986-11-18 | Method of working semikilled steel being cast |
Publications (1)
Publication Number | Publication Date |
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SU1424947A1 true SU1424947A1 (en) | 1988-09-23 |
Family
ID=21280870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU864182390A SU1424947A1 (en) | 1986-11-18 | 1986-11-18 | Method of working semikilled steel being cast |
Country Status (1)
Country | Link |
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SU (1) | SU1424947A1 (en) |
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1986
- 1986-11-18 SU SU864182390A patent/SU1424947A1/en active
Non-Patent Citations (1)
Title |
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Авторское свидетельство СССР № 818730, кл. В 22 D 7/00, 1981. Авторское свидетельство СССР № 710765, кл. В 22 D 7/00, 1980. Патент US № 3436209, кл. 75-53, 1965. * |
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