US3864123A - Process of Producing Manganese Cast Steel on High Impact Strength - Google Patents
Process of Producing Manganese Cast Steel on High Impact Strength Download PDFInfo
- Publication number
- US3864123A US3864123A US166958A US16695871A US3864123A US 3864123 A US3864123 A US 3864123A US 166958 A US166958 A US 166958A US 16695871 A US16695871 A US 16695871A US 3864123 A US3864123 A US 3864123A
- Authority
- US
- United States
- Prior art keywords
- steel
- manganese
- cast
- antimony
- high impact
- 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
- 238000000034 method Methods 0.000 title claims abstract description 15
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title description 11
- 229910052748 manganese Inorganic materials 0.000 title description 11
- 239000011572 manganese Substances 0.000 title description 11
- 229910000617 Mangalloy Inorganic materials 0.000 claims abstract description 18
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 14
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 239000002893 slag Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 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 4
- 235000002908 manganese Nutrition 0.000 description 10
- 229910001208 Crucible steel Inorganic materials 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 101100264195 Caenorhabditis elegans app-1 gene Proteins 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- SPCNPOWOBZQWJK-UHFFFAOYSA-N dimethoxy-(2-propan-2-ylsulfanylethylsulfanyl)-sulfanylidene-$l^{5}-phosphane Chemical compound COP(=S)(OC)SCCSC(C)C SPCNPOWOBZQWJK-UHFFFAOYSA-N 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 150000002696 manganese Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
Definitions
- ABSTRACT A process for producing austenitic Hadfield type man ganese steel of high impact resistance by adding to molten manganese steel 0.01% 0.5% antimony. Austenitic manganese steel of the Hadfield type with an antimony content of 0.01% to 0.5%.
- the latter is cast, and is austenitic.
- the present invention is directed to improvements in high manganese, cast austenitic steel, which is that steel discussed in the following two paragraphs.
- Manganese steel as set forth in Metallurgy and Its Influence On Modern Progress" by Sir Robert A. Hadfield, 1925, is steel which has a manganese content in the range of about 11 14% and a carbon content in the range of about 1.0 1.5%: such steel as cast" is austentic Hadfield U.S. Pat. No. 1,310,528 defines Manganese Steel as steel having a manganese content of about to 17% manganese, with carbon in the range of 0.75 2.0%.
- manganese cast steel is produced by a basic metallurgical process.
- a liquid metal the following non-ferrous metals are introduced: aluminum in order to deoxidize the bath and for refining the original structure, and titanium for bonding nitrogen in a stable intermetallic compounds.
- This cast steel in a crude state shows an austenitic structure with several carbide inclusions.
- cast steel is heat treated by soaking it at a temperature range of 1323 1355K and subsequently cooling it in water.
- the process of producing cast steel of high impact strength comprises melting manganese cast steel in the known manner and then modifying it with antimony in the amount of 0.01 0.5%.
- the modification can be carried out in a furnace or in a ladle.
- the slag In introducing the modifying agent into a furnace before tapping, the slag should be skimmed in order to enable the direct introduction of the antimony into the metal bath.
- the heat treatment of casting of such cast steels is carried out at the same temperatures but in considerably shortened annealing period or at lower temperatures (l223 1273K) in the same annealing period.
- the impact resistance of manganese cast steels obtained from the process according to the present invention are about 20 200% higher than that of cast steels produced according to previous techniques.
- Manganese cast steel after being heat treated shows mean impact strength of a sample without a notch as follows: without addition of Sb 254 J/cm 26 kGm/cm with addition of 0.05% Sb 490 .l/cm
- a process for producing austenitic cast steel having a high impact strength comprising adding to molten high manganese steel approximately 0.01 to 0.05% antimony.
- Austenitic cast high manganese steel having an antimony content of about 0.01 to 0.05%.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
A process for producing austenitic Hadfield type manganese steel of high impact resistance by adding to molten manganese steel 0.01% - 0.5% antimony. Austenitic manganese steel of the Hadfield type with an antimony content of 0.01% to 0.5%.
Description
United States Patent [1 1 Sakwa et al.
[ 51 Feb.4,1975
22 Filed: July 28, 1971 21 App1.No.: 166,958
Related US. Application Data [63] Continuation-impart of Ser. No. 771,619, Oct. 29,
1968, abandoned.
[30] Foreign Application Priority Data Oct. 31, 1967 Poland 123320 [52] US. Cl 75/129, 75/123 A, 75/123 N [51] Int. Cl... C22c 33/00, C22c 39/30, C22c 39/54 [58] Field of Search... 75/123 J, 129, 123 A, 123 N,
75/126 N, 126 B, 128 A, 128 R [56] References Cited UNITED STATES PATENTS Hodson 75/123 A' 2,334,870 11/1943 Franks 75/126 N X 2,867,531 1/1959 Holzwarth et al. 75/123 A 3,113,861 12/1963 Norman 1. 75/1231 FOREIGN PATENTS OR APPLICATIONS 1,213,418 11/1970 Great Britain 75/123 A 663,986 5/1963 Canada 75/123 N OTHER PUBLICATIONS A Dictionary of Metallurgy by A. D Merriman, 1958, pp iii & 179.
Primary Examiner-L. Dewayne Rutledge Assistant Examiner-Peter D. Rosenberg [57] ABSTRACT A process for producing austenitic Hadfield type man ganese steel of high impact resistance by adding to molten manganese steel 0.01% 0.5% antimony. Austenitic manganese steel of the Hadfield type with an antimony content of 0.01% to 0.5%.
5 Claims, No Drawings PROCESS OF PRODUCING MANGANESE CAST STEEL ON HIGH IMPACT STRENGTH CROSS REFERENCE TO RELATED APPLICATION This application 'is a Continuation-ln-Part Application of US. Pat. Ser. No. 771,619, filed Oct. 29, 1968 now abandoned.
Manganese is well known as an alloying component in steel making. Authorities recognize two classes of manganese steel:
1. low manganese steel where the manganese content is up to about 2%, and
2. high manganese steel where the manganese content is about ll% to 14%.
The latter is cast, and is austenitic. The present invention is directed to improvements in high manganese, cast austenitic steel, which is that steel discussed in the following two paragraphs.
Manganese steel, as set forth in Metallurgy and Its Influence On Modern Progress" by Sir Robert A. Hadfield, 1925, is steel which has a manganese content in the range of about 11 14% and a carbon content in the range of about 1.0 1.5%: such steel as cast" is austentic Hadfield U.S. Pat. No. 1,310,528 defines Manganese Steel as steel having a manganese content of about to 17% manganese, with carbon in the range of 0.75 2.0%.
In a former technique manganese cast steel is produced by a basic metallurgical process. Into a liquid metal the following non-ferrous metals are introduced: aluminum in order to deoxidize the bath and for refining the original structure, and titanium for bonding nitrogen in a stable intermetallic compounds.
This cast steel in a crude state shows an austenitic structure with several carbide inclusions.
In order to obtain a uniformaustenitic structure, without the presence of carbides, cast steel is heat treated by soaking it at a temperature range of 1323 1355K and subsequently cooling it in water.
The process of producing cast steel of high impact strength according to the invention comprises melting manganese cast steel in the known manner and then modifying it with antimony in the amount of 0.01 0.5%.
The modification can be carried out in a furnace or in a ladle. In introducing the modifying agent into a furnace before tapping, the slag should be skimmed in order to enable the direct introduction of the antimony into the metal bath.
Owing to this modification an austenitic structure with small amounts of carbide inclusions can be obtained.
The heat treatment of casting of such cast steels is carried out at the same temperatures but in considerably shortened annealing period or at lower temperatures (l223 1273K) in the same annealing period.
The impact resistance of manganese cast steels obtained from the process according to the present invention are about 20 200% higher than that of cast steels produced according to previous techniques.
Manganese cast steel after being heat treated (soaked for 1 hour at the temperature of 1323K) shows mean impact strength of a sample without a notch as follows: without addition of Sb 254 J/cm 26 kGm/cm with addition of 0.05% Sb 490 .l/cm
- 50 kGm/cm We claim:
l. A process for producing austenitic cast steel having a high impact strength comprising adding to molten high manganese steel approximately 0.01 to 0.05% antimony.
2. The process of claim 1, wherein said molten high manganese steel is in a furnace and has slag thereon, and wherein said slag is skimmed off and said antimony is introduced directly into the molten steel bath.
3. The process of claim 1, wherein said antimony is added to said steel while said steel is in a ladle.
4. The process of claim 1, wherein said high manganese steel contains approximately 10 to 17% manganese, approximately 0.75% 2.0% carbon and is sub stantially austenitic when cast.
5. Austenitic cast high manganese steel having an antimony content of about 0.01 to 0.05%.
=l l l
Claims (4)
- 2. The process of claim 1, wherein said molten high manganese steel is in a furnace and has slag thereon, and wherein said slag is skimmed off and said antimony is introduced directly into the molten steel bath.
- 3. The process of claim 1, wherein said antimony is added to said steel while said steel is in a ladle.
- 4. The process of claim 1, wherein said high manganese steel contains approximately 10 to 17% manganese, approximately 0.75% -2.0% carbon and is substantially austenitic when cast.
- 5. Austenitic cast high manganese steel having an antimony content of about 0.01 to 0.05%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US166958A US3864123A (en) | 1967-10-31 | 1971-07-28 | Process of Producing Manganese Cast Steel on High Impact Strength |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL123320A PL57671B1 (en) | 1967-10-31 | ||
| US77161968A | 1968-10-29 | 1968-10-29 | |
| US166958A US3864123A (en) | 1967-10-31 | 1971-07-28 | Process of Producing Manganese Cast Steel on High Impact Strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3864123A true US3864123A (en) | 1975-02-04 |
Family
ID=27354017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US166958A Expired - Lifetime US3864123A (en) | 1967-10-31 | 1971-07-28 | Process of Producing Manganese Cast Steel on High Impact Strength |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3864123A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4377422A (en) * | 1980-09-12 | 1983-03-22 | Queen's University At Kingston | Hadfield's steel containing 2% vanadium |
| DE102015111866A1 (en) * | 2015-07-22 | 2017-01-26 | Salzgitter Flachstahl Gmbh | Formable lightweight structural steel with improved mechanical properties and process for the production of semi-finished products from this steel |
| CN106893798A (en) * | 2017-04-02 | 2017-06-27 | 首钢总公司 | A kind of corrosion-resisting steel adds the smelting process of antimony |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1861568A (en) * | 1929-05-10 | 1932-06-07 | Frank S Hodson | Silicon iron castings and method of making the same |
| US2334870A (en) * | 1942-02-04 | 1943-11-23 | Electro Metallurg Co | Austenitic chromium-nickel and/or manganese steels |
| US2867531A (en) * | 1957-01-31 | 1959-01-06 | Gen Motors Corp | Corrosion-resistant low alloy steel |
| US3113861A (en) * | 1961-05-16 | 1963-12-10 | American Metal Climax Inc | Austenitic steel alloy |
-
1971
- 1971-07-28 US US166958A patent/US3864123A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1861568A (en) * | 1929-05-10 | 1932-06-07 | Frank S Hodson | Silicon iron castings and method of making the same |
| US2334870A (en) * | 1942-02-04 | 1943-11-23 | Electro Metallurg Co | Austenitic chromium-nickel and/or manganese steels |
| US2867531A (en) * | 1957-01-31 | 1959-01-06 | Gen Motors Corp | Corrosion-resistant low alloy steel |
| US3113861A (en) * | 1961-05-16 | 1963-12-10 | American Metal Climax Inc | Austenitic steel alloy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4377422A (en) * | 1980-09-12 | 1983-03-22 | Queen's University At Kingston | Hadfield's steel containing 2% vanadium |
| DE102015111866A1 (en) * | 2015-07-22 | 2017-01-26 | Salzgitter Flachstahl Gmbh | Formable lightweight structural steel with improved mechanical properties and process for the production of semi-finished products from this steel |
| CN106893798A (en) * | 2017-04-02 | 2017-06-27 | 首钢总公司 | A kind of corrosion-resisting steel adds the smelting process of antimony |
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