DE1458391B1 - USING A NIOB IRON MASK - Google Patents
USING A NIOB IRON MASKInfo
- Publication number
- DE1458391B1 DE1458391B1 DE19641458391 DE1458391A DE1458391B1 DE 1458391 B1 DE1458391 B1 DE 1458391B1 DE 19641458391 DE19641458391 DE 19641458391 DE 1458391 A DE1458391 A DE 1458391A DE 1458391 B1 DE1458391 B1 DE 1458391B1
- Authority
- DE
- Germany
- Prior art keywords
- niobium
- iron
- manganese
- tantalum
- niob
- 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.)
- Withdrawn
Links
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 title claims description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 11
- 229910052742 iron Inorganic materials 0.000 title claims description 6
- 239000010955 niobium Substances 0.000 claims description 25
- 229910052758 niobium Inorganic materials 0.000 claims description 24
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 8
- 229910052715 tantalum Inorganic materials 0.000 claims description 7
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- JMAHHHVEVBOCPE-UHFFFAOYSA-N [Fe].[Nb] Chemical compound [Fe].[Nb] JMAHHHVEVBOCPE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 229910001336 Semi-killed steel Inorganic materials 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 239000000161 steel melt Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- -1 0.390 / Chemical compound 0.000 description 7
- 239000011572 manganese Substances 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 229910052748 manganese Inorganic materials 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 229910000640 Fe alloy Inorganic materials 0.000 description 3
- 229910000592 Ferroniobium Inorganic materials 0.000 description 3
- ZFGFKQDDQUAJQP-UHFFFAOYSA-N iron niobium Chemical compound [Fe].[Fe].[Nb] ZFGFKQDDQUAJQP-UHFFFAOYSA-N 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- ODBHMFLQVYZPDM-UHFFFAOYSA-N [Mn].[Nb].[Fe] Chemical compound [Mn].[Nb].[Fe] ODBHMFLQVYZPDM-UHFFFAOYSA-N 0.000 description 1
- WWRVXNGTXLEFLL-UHFFFAOYSA-N [Ta].[Nb].[Fe] Chemical compound [Ta].[Nb].[Fe] WWRVXNGTXLEFLL-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 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 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-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
- C22C35/00—Master alloys for iron or steel
- C22C35/005—Master alloys for iron or steel based on iron, e.g. ferro-alloys
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)
Description
Hochfeste, niobhaltige Baustähle haben sich wegen ihrer vorzüglichen mechanischen Eigenschaften gut eingeführt. Diese Baustähle sind schweißbar und enthalten im allgemeinen etwa 0,2 0/, C, 0,8 bis 1,5 0/, Mn und geringe Niobgehalte bis zu 0,0501" und sind den Baustählen St 52-3 ähnlich. Sie werden vorwiegend in Siemens-Martin-Öfen erschmolzen und halbberuhigt vergossen.High-strength, niobium-containing structural steels are well established because of their excellent mechanical properties. These structural steels can be welded and generally contain about 0.2 Ω / □, 0.8 to 1.5 Ω / □ Mn and low niobium contents of up to 0.0501 "and are similar to the structural steels St 52-3 . They are predominantly used Melted in Siemens-Martin furnaces and poured half-calmed.
Das Einlegieren von Niob erfolgt 'normalerweise mit den üblichen Ferro-Niob-Tantal- (1) oder Ferro-Niob-Legierungen (2), die folgende Zusammensetzung haben. 0/, C 01, Nb 0/, Ta % Fe 'lo Si % Al (1) 0,10 60 6 Rest 1 bis 2 1 bis 2 (2) 0,10 60 0,6 bis 2 Rest 1 bis 2 1 bis 2 Die Zugabe der Legierung erfolgt in der Pfanne. Es zeigt sich jedoch, daß die Art der Zugabe einen wesentlichen EMuß auf die gleichmäßige Verteilung und auch auf den Niobabbrand hat.The alloying of niobium is normally done with the usual ferro-niobium-tantalum (1) or ferro-niobium alloys (2), which have the following composition. 0 /, C 01, Nb 0 /, Ta % Fe 'lo Si% Al (1) 0.10 60 6 remainder 1 to 2 1 to 2 (2) 0.10 60 0.6 to 2 remainder 1 to 2 1 to 2 The alloy is added in the ladle. It turns out, however, that the type of addition has a significant influence on the uniform distribution and also on the burn-up of niobium.
Da diese Baustähle üblicherweise im Siemens-Martin-Ofen erschmolzen werden, sind der Temperatur des flüssigen Stahls Grenzen gezogen. Um eine möglichst gute Niob-Ausbeute zu erhalten, kommt es darauf an, daß die Niob-Eisen-Legierungen sich gut im Stahl lösen und dazu einen verhältnismäßig niedrigen Schmelzbereich aufweisen. Die Schmelzbereiche handelsüblicher Niob-Eisen-Tantal- bzw. Niob-Eisen-Legierungen liegen über 1530'C und reichen bis 1580'C sowie sogar 1600'C, wenn ein besonders hoher Niob-Gehalt vorliegt.Since these structural steels are usually melted in the Siemens-Martin furnace, there are limits to the temperature of the liquid steel. In order to obtain the best possible niobium yield, it is important that the niobium-iron alloys dissolve well in the steel and also have a relatively low melting range. The melting ranges of commercially available niobium-iron-tantalum or niobium-iron alloys are above 1530'C and reach up to 1580'C and even 1600'C if the niobium content is particularly high.
Es hat sich nun gezeigt, daß es möglich ist, Niob-Eisen-Legierungen zu verwenden, die wesentlich niedrigere Schmelzbereiche aufweisen und sich im Stahlbad unter geringem Niobabbrand lösen. Erfindungsgemäß trifft dies für eine zu verwendende Legierung mit 10 bis 45 0/0, vorzugsweise 10 bis 30 0/0, Mangan 55 bis 75 0/" vorzugsweise 65 bis 70 0/0, Niob Rest Eisen zu, die rohstoffbedingte Gehalte an Tantal, Aluminium, Silicium und Kohlenstoff enthält. Die Legierung soll als Vorlegierung zum Zulegieren von Niob zu halbberuhigten Stahlschmelzen verwendet werden. In dieser Vorlegierung hat das Mangan die Eigenschaft, das Niob vor Oxydation und Verschlackung zu schützen und so eine gute Ausbeute an Niob zu gewährleisten. Besonders wirksam ist das Mangan daher dort, wo es in starker Masse darauf ankommt, daß Niob nicht verschlackt, z. B. bei halbberuhigtem Stahl. Bekanntlich findet sich in jedem Niob-Erz auch Tantal, so daß sich praktisch in jeder niobhaltigen Legierung geringe Mengen Tantal befinden, die je nach Herkunft zwischen 2 bis 6 0/0 betragen. Der Schmelzbereich dieser Legierungen ist von 1490 bis 15300C. Die USA.-Patentschrift 2 999 749 beschreibt ein Verfahren zur Herstellung von unberuhigten Stählen, und die der Stahlschmelze zuzusetzende Manganlegierung mit mindestens 25 0/0 Mangan soll mindestens eines der Elemente Niob, Tantal, Vanadium und Bor enthalten.It has now been shown that it is possible to use niobium-iron alloys which have significantly lower melting ranges and which dissolve in the steel bath with little niobium erosion. According to the invention, this applies to an alloy to be used with 10 to 45 0/0, preferably 10 to 30 0/0, manganese 55 to 75 0/0, preferably 65 to 70 0/0, niobium, remainder iron, the raw material-related tantalum content, Contains aluminum, silicon and carbon. The alloy is intended to be used as a master alloy for adding niobium to semi-killed steel melts. In this master alloy, the manganese has the property of protecting the niobium from oxidation and slagging and thus ensuring a good yield of niobium. Especially Manganese is therefore effective where it is very important that niobium does not form slag, e.g. in semi-killed steel.As is well known, tantalum is also found in every niobium ore, so that practically every niobium-containing alloy contains small amounts of tantalum are, the amount depending on the origin between 2 and 6 0/0. the melting range of these alloys is from 1490 to 15300C. the USA. Patent 2,999,749 describes a process for Hers The manufacture of non-killed steels, and the manganese alloy with at least 25 % manganese to be added to the molten steel should contain at least one of the elements niobium, tantalum, vanadium and boron.
Die letztgenannten Elemente werden als gleichwirkend betrachtet und es konnte daher der Fachmann hieraus nicht die Lehre ziehen, daß Niob und Mangan in vorteilhafter Weise als Nilob-Eisen-Vorlegierung in dem erfindungsgemäßen Bereich verwendet werden. Hierzu bedurfte es der neuartigen Erkenntnis, daß im Dreistoffsystein Eisen-Mangan-Niob nur zwei geeignete niedrigschmelzende Konzentrationsbereiche vorliegen, von denen der mit vergleichsweise niedrigem Mangangehalt verwendet werden soll.The latter elements are considered to have the same effect and the skilled person could therefore not draw the lesson from this that niobium and manganese advantageously as a nilob iron master alloy in the range according to the invention be used. This required the new knowledge that in the three-substance system Iron-Manganese-Niobium only have two suitable low-melting concentration ranges, of which the one with a comparatively low manganese content should be used.
Die Wirksamkeit des Mangangehaltes der erfindungsgemäß zu verwendenden Legierung wird aus den nachfolgend wiedergegebenen Vergleichsschmelzen aus einem Versuchsofen deutlich.The effectiveness of the manganese content to be used according to the invention Alloy is made from the comparative melts shown below from a Experimental oven clearly.
Beispiel 1 Im Induktionsofen wurden zwei Schmelzen mit je 20 kg Stahlschrott eingeschmolzen, mit 50 g Aluminium desoxydiert und 15,4 g Ferro-Niob mit 65,2 01, Niob, 0,390/, Tantal, 3,8"/, Aluminium, 2,680/, Silicium, 0,220/0 Kohlenstoff (Schmelztemperatur des Ferro-Niob allein 1530 bis 1600'C) zulegiert. Erhalten wurde ein Stahl mit 0,040 0/0 Niob, das entspricht einer Niobausbeute von 720/0. Der Niobgehalt des vorgeschmolzenen Stahlschrottes wurde bei der Ausbeuterechnung berücksichtigt.Example 1 In the induction furnace, two melts with 20 kg of steel scrap each were melted down, deoxidized with 50 g of aluminum and 15.4 g of ferro-niobium with 65.2 01, niobium, 0.390 /, tantalum, 3.8 "/, aluminum, 2.680 / , Silicon, 0.220 / 0 carbon (melting temperature of ferro-niobium alone 1530 to 1600 ° C.) A steel with 0.040 % niobium was obtained, which corresponds to a niobium yield of 720/0 Yield calculation taken into account.
B e i s p i e 1 2 Im Induktionsofen wurden wie im Beispiel 1 drei Stablschmelzen gemacht, desoxydiert, danach jeder Schmelze 14 g Ferromanganniob mit 70,9 0/,) Niob, 2,55 0/, Tantal, 10,0 0/, Mangan, 14,9 0/0 Eisen, 0,44 0/0 Aluminium, 0,690/, Silicium, 0,01501, Kohlenstoff zugesetzt (Schmelztemperatur des Ferromanganniobs 1500 bis 1530'C). Es wurde ein Stahl mit 0,0470/, Niob, entsprechend einer Niob-Ausbeute von 860/" erhalten.B ice p y 1 2 In the induction furnace were made as in Example 1, three Stablschmelzen, deoxidized, and then each melt 14 g Ferromanganniob 70.9 0 /,) niobium, 2.55 0 /, tantalum, 10.0 0 /, manganese , 14.9 0/0 iron, 0.44 0/0 aluminum, 0.690 /, silicon, 0.01501, carbon added (melting temperature of the ferromanganniobe 1500 to 1530'C). A steel with 0.0470 / niobium, corresponding to a niobium yield of 860 / ", was obtained.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG0042029 | 1964-11-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1458391B1 true DE1458391B1 (en) | 1971-10-14 |
Family
ID=7126840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19641458391 Withdrawn DE1458391B1 (en) | 1964-11-16 | 1964-11-16 | USING A NIOB IRON MASK |
Country Status (3)
| Country | Link |
|---|---|
| AT (1) | AT259604B (en) |
| BR (1) | BR6574785D0 (en) |
| DE (1) | DE1458391B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992022675A1 (en) * | 1991-06-14 | 1992-12-23 | Niobium Products Company, Inc. | Niobium ferroalloy and niobium additive for steels, cast irons, and other metallic alloys |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE639143A (en) * | 1963-10-29 | |||
| US2999749A (en) * | 1958-09-17 | 1961-09-12 | Union Carbide Corp | Method for producing non-aging rimmed steels |
| FR1274747A (en) * | 1960-10-15 | 1961-10-27 | Birmingham Small Arms Co Ltd | Niobium-based alloy and its production process |
-
1964
- 1964-11-16 DE DE19641458391 patent/DE1458391B1/en not_active Withdrawn
-
1965
- 1965-11-12 BR BR17478565A patent/BR6574785D0/en unknown
- 1965-11-16 AT AT1030765A patent/AT259604B/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2999749A (en) * | 1958-09-17 | 1961-09-12 | Union Carbide Corp | Method for producing non-aging rimmed steels |
| FR1274747A (en) * | 1960-10-15 | 1961-10-27 | Birmingham Small Arms Co Ltd | Niobium-based alloy and its production process |
| BE639143A (en) * | 1963-10-29 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992022675A1 (en) * | 1991-06-14 | 1992-12-23 | Niobium Products Company, Inc. | Niobium ferroalloy and niobium additive for steels, cast irons, and other metallic alloys |
Also Published As
| Publication number | Publication date |
|---|---|
| BR6574785D0 (en) | 1973-08-14 |
| AT259604B (en) | 1968-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE1508314B2 (en) | Use of a hard alloy in the form of additional wires, welding rods or tapes for the production of highly heat-resistant armoring resistant to oxidizing and reducing media | |
| DE1458391B1 (en) | USING A NIOB IRON MASK | |
| DE2244092A1 (en) | NICKEL-MAGNESIUM ALLOY | |
| DE1458391C (en) | Use of a niobium-iron master alloy | |
| DE2528588C2 (en) | Process for the large-scale production of austenitic steels or alloys with nitrogen contents above the maximum solubility at atmospheric pressure | |
| DE4124159C2 (en) | Master alloy for the treatment of cast iron melts | |
| DE69705691T2 (en) | Process for the production of sulfurized steel with a fine austenitic grain | |
| DE1295196B (en) | Use of an iron-silicon-metal alloy as a master alloy for the production of alloyed steels | |
| DE1458810C3 (en) | Process for the production of an iron-silicon alloy with an oxygen content of about 0.0025% | |
| DE939155C (en) | Steel melting process | |
| DE1190015B (en) | Cleaning agent for iron and steel melts | |
| AT105032B (en) | Process for the production of stainless chromium steel and other iron alloys. | |
| DE2222959A1 (en) | CAST IRON WITH SPHERICAL GRAPHITE, WHICH HAS INCREASED MECHANICAL PROPERTIES AND ITS MANUFACTURING PROCESS | |
| DE595777C (en) | Master alloy composed of vanadium, aluminum, silicon and iron | |
| DE857062C (en) | Ferro alloy | |
| DE595749C (en) | Process for the production of low-oxygen copper | |
| DE682348C (en) | Process for the production of permanent magnet alloys | |
| DE1608409B2 (en) | Cast iron alloy with nitrogen additive | |
| AT147781B (en) | Process for the production of ferrous alloys for permanent magnets. | |
| DE972798C (en) | Master alloy for the manufacture of spheroidal graphite cast iron and process for their manufacture | |
| DE1758455C3 (en) | Process for refining alloyed carbonaceous iron melts | |
| DE815810C (en) | Process for the production of iron-aluminum alloys | |
| DE302862C (en) | ||
| DE1181921B (en) | Process for treating melts made from alloys with a high copper content | |
| DE656329C (en) | Process for removing bismuth from copper-containing substances when blowing in the converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| E77 | Valid patent as to the heymanns-index 1977 | ||
| EHJ | Ceased/non-payment of the annual fee |