US3356493A - Alloys for nitriding steel and method of nitriding steel - Google Patents
Alloys for nitriding steel and method of nitriding steel Download PDFInfo
- Publication number
- US3356493A US3356493A US425922A US42592265A US3356493A US 3356493 A US3356493 A US 3356493A US 425922 A US425922 A US 425922A US 42592265 A US42592265 A US 42592265A US 3356493 A US3356493 A US 3356493A
- Authority
- US
- United States
- Prior art keywords
- steel
- nitrogen
- weight
- alloys
- alloy
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title description 45
- 239000010959 steel Substances 0.000 title description 45
- 229910045601 alloy Inorganic materials 0.000 title description 21
- 239000000956 alloy Substances 0.000 title description 21
- 238000005121 nitriding Methods 0.000 title description 8
- 238000000034 method Methods 0.000 title description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 53
- 229910052757 nitrogen Inorganic materials 0.000 claims description 27
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 8
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000007792 addition Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- MVXMNHYVCLMLDD-UHFFFAOYSA-N 4-methoxynaphthalene-1-carbaldehyde Chemical compound C1=CC=C2C(OC)=CC=C(C=O)C2=C1 MVXMNHYVCLMLDD-UHFFFAOYSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229910001021 Ferroalloy Inorganic materials 0.000 description 2
- 229910000616 Ferromanganese Inorganic materials 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 2
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 229910000655 Killed steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910001327 Rimmed steel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- 238000006902 nitrogenation reaction Methods 0.000 description 1
- -1 silicon or aluminum Chemical compound 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
Definitions
- This invention relates to a family of alloys which are introduced into molten steel and impart to the steel a nitrogen content in predictable, given amounts.
- this gaseous layer might be reduced by introduction of nitrogen combined with a strong reducing agent such as aluminum.
- a strong reducing agent such as aluminum.
- aluminum nitride due to its lightness in weight, aluminum nitride is unsuitable because it floats on top of the metal surface, is not wetted by the steel bath and remains more or less coated with slag. The result is an extremely low and most irregular nitrogen yield in the steel.
- Our present invention relates to:
- They may also contain other components or impurities generally found in industrial manganese alloys.
- the alloys are relatively dense and they are wetted by liquid steels at normal steel making temperatures and are most soluble therein. Their melting point is definitely lower than that of steel. Significantly, the presence of aluminum renders the nitrogen dissolution in steel easier and reduces the nitrogen losses during the dissolution.
- the alloys are made by known industrial processes and they are utilized as homogeneous, crushed or sintered lumps. They are added to the steel either in the furnace before casting, or in the runner, the feeding head sprue, or in the ladle before or during casting.
- the nitrogen yield during its introduction into the steel is very high and remarkably regular for similar operating conditions.
- the nitrogen yield in the steel was 81%.
- Example 2 A killed steel was also nitrided to obtain a steel of the following composition:
- the nitrogen yield in the steel was 89%.
- a metal alloy consisting essentially of about 40.0- 90.0% by weight manganese, about 0.50-10.0% by weight aluminum, about 0.50-10.0% by weight nitrogen and up to 8% by weight carbon.
- a metal alloy for nitriding steel consisting essentially of about-70.0-90.0% by weight manganese, about 2.04.0% by weight aluminum, about 4.06.0% by weight nitrogen, up to 3% by weight carbon, up to 2% by weight silicon and balance iron.
- a method of nitriding steel comprising introducing into molten steel an alloy consisting essentially of about 40.0-90.0% by weight manganese, about 0.50-10.0% by weight aluminum, about 0.50-10.0% by weight nitrogen and up to 8% by weight carbon.
- a method of nitriding steel comprising introducing into molten steel an alloy consisting essentially of 70.0- 90.0% by weight manganese, about 2.04.0% by weight aluminum, about 4.06.0% by weight nitrogen, up to 3% by weight carbon, up to 2% by weight silicon and balance iron.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR961173A FR1391109A (fr) | 1964-01-22 | 1964-01-22 | Alliages nitrurés à l'aluminium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3356493A true US3356493A (en) | 1967-12-05 |
Family
ID=8821466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US425922A Expired - Lifetime US3356493A (en) | 1964-01-22 | 1965-01-15 | Alloys for nitriding steel and method of nitriding steel |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3356493A (en)) |
| BE (1) | BE658099A (en)) |
| DE (1) | DE1238221B (en)) |
| ES (1) | ES308236A1 (en)) |
| FR (1) | FR1391109A (en)) |
| GB (1) | GB1036502A (en)) |
| NL (1) | NL6500494A (en)) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4623402A (en) * | 1980-01-25 | 1986-11-18 | Nauchno-Issledovatelsky Institut Prikladnoi Matematiki Pri Tomskom Gosudarstvennov Universitete | Metal composition and process for producing same |
| US4875933A (en) * | 1988-07-08 | 1989-10-24 | Famcy Steel Corporation | Melting method for producing low chromium corrosion resistant and high damping capacity Fe-Mn-Al-C based alloys |
| CN104263876A (zh) * | 2014-09-22 | 2015-01-07 | 山东钢铁股份有限公司 | 一种用于高强度钢生产的增氮增锰方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US415832A (en) * | 1889-11-26 | Manganese bronze and alloy of commerce | ||
| US2696433A (en) * | 1951-01-11 | 1954-12-07 | Armco Steel Corp | Production of high nitrogen manganese alloy |
| US3304175A (en) * | 1964-07-14 | 1967-02-14 | Shieldalloy Corp | Nitrogen-containing alloy and its preparation |
-
1964
- 1964-01-22 FR FR961173A patent/FR1391109A/fr not_active Expired
-
1965
- 1965-01-11 BE BE658099D patent/BE658099A/xx not_active IP Right Cessation
- 1965-01-15 US US425922A patent/US3356493A/en not_active Expired - Lifetime
- 1965-01-15 NL NL6500494A patent/NL6500494A/xx unknown
- 1965-01-16 ES ES0308236A patent/ES308236A1/es not_active Expired
- 1965-01-18 GB GB2165/65A patent/GB1036502A/en not_active Expired
- 1965-01-21 DE DES95088A patent/DE1238221B/de active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US415832A (en) * | 1889-11-26 | Manganese bronze and alloy of commerce | ||
| US2696433A (en) * | 1951-01-11 | 1954-12-07 | Armco Steel Corp | Production of high nitrogen manganese alloy |
| US3304175A (en) * | 1964-07-14 | 1967-02-14 | Shieldalloy Corp | Nitrogen-containing alloy and its preparation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4623402A (en) * | 1980-01-25 | 1986-11-18 | Nauchno-Issledovatelsky Institut Prikladnoi Matematiki Pri Tomskom Gosudarstvennov Universitete | Metal composition and process for producing same |
| US4875933A (en) * | 1988-07-08 | 1989-10-24 | Famcy Steel Corporation | Melting method for producing low chromium corrosion resistant and high damping capacity Fe-Mn-Al-C based alloys |
| CN104263876A (zh) * | 2014-09-22 | 2015-01-07 | 山东钢铁股份有限公司 | 一种用于高强度钢生产的增氮增锰方法 |
| CN104263876B (zh) * | 2014-09-22 | 2015-11-11 | 山东钢铁股份有限公司 | 一种用于高强度钢生产的增氮增锰方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6500494A (en)) | 1965-07-23 |
| ES308236A1 (es) | 1965-04-16 |
| BE658099A (en)) | 1965-04-30 |
| DE1238221B (de) | 1967-04-06 |
| GB1036502A (en) | 1966-07-20 |
| FR1391109A (fr) | 1965-03-05 |
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