JP5300299B2 - 高s系ステンレス鋼のrh脱ガス処理における脱窒抑制方法 - Google Patents
高s系ステンレス鋼のrh脱ガス処理における脱窒抑制方法 Download PDFInfo
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- JP5300299B2 JP5300299B2 JP2008086267A JP2008086267A JP5300299B2 JP 5300299 B2 JP5300299 B2 JP 5300299B2 JP 2008086267 A JP2008086267 A JP 2008086267A JP 2008086267 A JP2008086267 A JP 2008086267A JP 5300299 B2 JP5300299 B2 JP 5300299B2
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- degassing
- stainless steel
- molten steel
- time
- denitrification
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- 238000007872 degassing Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 29
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 25
- 239000010935 stainless steel Substances 0.000 title claims abstract description 23
- 230000001629 suppression Effects 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 47
- 239000010959 steel Substances 0.000 claims abstract description 47
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000005261 decarburization Methods 0.000 abstract description 18
- 230000000452 restraining effect Effects 0.000 abstract 2
- 230000001770 denitrificating effect Effects 0.000 abstract 1
- 230000001657 nitrificating effect Effects 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000005121 nitriding Methods 0.000 description 10
- 238000007670 refining Methods 0.000 description 10
- 238000007664 blowing Methods 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 229910001566 austenite Inorganic materials 0.000 description 4
- 229910000734 martensite Inorganic materials 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229910000599 Cr alloy Inorganic materials 0.000 description 2
- 229910000604 Ferrochrome Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical compound [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
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- Treatment Of Steel In Its Molten State (AREA)
Description
Claims (2)
- 質量%で、S≧0.10%である高S系ステンレス鋼の溶製の際のRH脱ガス処理において、RH脱ガス処理の処理開始の初期の間に溶鋼中にS成分を投入することによりRH脱ガス処理時間における投入後の[S]濃度の高い時間の割合を多くすることを特徴とする高S系ステンレス鋼のRH脱ガス処理における脱窒の抑制方法。
- RH脱ガス処理の処理開始後15分以内に溶鋼中にS成分を投入することを特徴とする請求項1に記載の高S系ステンレス鋼のRH脱ガス処理における脱窒の抑制方法。
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JP2008086267A JP5300299B2 (ja) | 2008-03-28 | 2008-03-28 | 高s系ステンレス鋼のrh脱ガス処理における脱窒抑制方法 |
Publications (2)
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JP2009235550A JP2009235550A (ja) | 2009-10-15 |
JP5300299B2 true JP5300299B2 (ja) | 2013-09-25 |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6330707B2 (ja) * | 2015-03-26 | 2018-05-30 | Jfeスチール株式会社 | 低窒素鋼の溶製方法 |
CN111014298B (zh) * | 2019-12-02 | 2022-06-10 | 抚顺特殊钢股份有限公司 | 一种高硫不锈钢416半连轧用锭直接成材的轧制方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2002220618A (ja) * | 2001-01-29 | 2002-08-09 | Kobe Steel Ltd | 溶接性に優れた清浄鋼の製造方法及び清浄鋼 |
JP2006283144A (ja) * | 2005-03-31 | 2006-10-19 | Sanyo Special Steel Co Ltd | ステンレス鋼の溶製におけるrh脱ガス装置による脱炭方法 |
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