EP0546351B1 - Fülldraht mit einem Inhalt an passiviertem pyrophorem Metall und dessen Verwendung - Google Patents
Fülldraht mit einem Inhalt an passiviertem pyrophorem Metall und dessen Verwendung Download PDFInfo
- Publication number
- EP0546351B1 EP0546351B1 EP92119560A EP92119560A EP0546351B1 EP 0546351 B1 EP0546351 B1 EP 0546351B1 EP 92119560 A EP92119560 A EP 92119560A EP 92119560 A EP92119560 A EP 92119560A EP 0546351 B1 EP0546351 B1 EP 0546351B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnesium
- weight
- passivated
- metal
- cored wire
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 title claims abstract description 25
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000011777 magnesium Substances 0.000 claims abstract description 28
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 7
- 239000010439 graphite Substances 0.000 claims abstract description 7
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 7
- JIHQDMXYYFUGFV-UHFFFAOYSA-N 1,3,5-triazine Chemical compound C1=NC=NC=N1 JIHQDMXYYFUGFV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910000805 Pig iron Inorganic materials 0.000 claims abstract description 4
- 150000002357 guanidines Chemical class 0.000 claims abstract description 4
- 150000002897 organic nitrogen compounds Chemical class 0.000 claims abstract description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 7
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 7
- 150000002910 rare earth metals Chemical class 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005275 alloying Methods 0.000 claims description 2
- 241001417490 Sillaginidae Species 0.000 claims 3
- 239000000463 material Substances 0.000 claims 3
- 150000002739 metals Chemical class 0.000 abstract description 12
- 239000003795 chemical substances by application Substances 0.000 abstract description 11
- 239000000155 melt Substances 0.000 abstract description 7
- 239000002318 adhesion promoter Substances 0.000 abstract description 4
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 abstract description 4
- 229940083094 guanine derivative acting on arteriolar smooth muscle Drugs 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 229910001092 metal group alloy Inorganic materials 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 239000002245 particle Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011081 inoculation Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- LWFBRHSTNWMMGN-UHFFFAOYSA-N 4-phenylpyrrolidin-1-ium-2-carboxylic acid;chloride Chemical compound Cl.C1NC(C(=O)O)CC1C1=CC=CC=C1 LWFBRHSTNWMMGN-UHFFFAOYSA-N 0.000 description 1
- 239000005997 Calcium carbide Substances 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- SQSPRWMERUQXNE-UHFFFAOYSA-N Guanylurea Chemical compound NC(=N)NC(N)=O SQSPRWMERUQXNE-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910001514 alkali metal chloride Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910001617 alkaline earth metal chloride Inorganic materials 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
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- -1 magnesium Chemical class 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000010944 pre-mature reactiony Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000161 steel melt Substances 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
- C21C1/025—Agents used for dephosphorising or desulfurising
-
- 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
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
-
- 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
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
Definitions
- the present invention relates to a cored wire for the treatment of molten metals and the use thereof.
- Pyrophoric metals such as magnesium, calcium, aluminum and corresponding alloys thereof, in particular in finely divided form, pose particular problems in their handling and use.
- the metals are used in the finely divided form for treatment, such as for the deoxidation of iron and steel melts, for the desulphurization of pig iron melts, for the production of certain alloys and others.
- DE 39 08 815 A1 and the corresponding EP-A-0 388 816 describe a process for passivating pyrophoric metals, in particular magnesium, with 0.5 to 5% by weight of an s-triazine and / or guanidine Derivatives described as passivating agents, based on the weight of the metal.
- Such passivated fine-particle metals are characterized by their favorable burning behavior and are therefore particularly suitable as treatment agents for metallurgical melts, e.g. in the desulfurization of pig iron.
- DE 39 08 815 is hereby incorporated by reference into the present disclosure.
- patent specification DE 39 24 558 C1 describes an agent in the form of a cored wire and a method for its production, the use of which consists in treating cast iron melts with a magnesium-containing silicon alloy.
- the advantage of the flux cored wire described can be seen in the shifting of the excretion form of the cast iron carbon in the direction of spheroidal graphite by adding 5-30% by weight of pure magnesium and 0.1-5% by weight of rare earth metals, as well as in the reduction of the process steps desulfurization, magnesium treatment and Inoculating cast iron melts on a single treatment measure to be carried out simultaneously.
- EP-A-0 066 305 describes the use of passivated magnesium or calcium as a wire filling.
- the passivation of these metals is achieved with a surface coating that consists essentially of Aluminum oxide, magnesium oxide, finely divided silica, graphite or coke powder.
- the premature reaction of the reactive agent is suppressed only during the treatment process, e.g. the premature melting and evaporation of the magnesium core is to be overcome.
- the process has serious disadvantages, such as afterglow or afterburning of the wire, and the release of harmful metal oxides during and after the treatment.
- the present invention was based on the object of providing a cored wire with improved internal forces for the treatment of molten metals.
- a finely divided pyrophoric metal namely magnesium
- a passivating agent based on organic nitrogen compounds, preferably organic NCN compounds from the series of the s-triazines and / or guanidine derivatives.
- organic nitrogen compounds preferably organic NCN compounds from the series of the s-triazines and / or guanidine derivatives.
- a passivating agent based on organic nitrogen compounds, preferably organic NCN compounds from the series of the s-triazines and / or guanidine derivatives.
- melamine or melamine cyanurate guanylurea or guanylurea phosphate is preferably used.
- Cyanoguanidine (dicyandiamide) is particularly preferably used as a passivating agent.
- the passivating agent is used in an amount of 0.5 to 5% by weight, preferably 3% by weight, based on the weight of the pyrophoric metal, namely magnesium, and is applied to the metal with the aid of an adhesion promoter. Viscous mineral oils, vegetable oils or preferably silicone oils are used as adhesion promoters. Adhesion promoters of this type are generally used in an amount of 0.1 to 0.5% by weight, based on the metal to be coated (see published patent application DE 39 08 815 A1).
- the particle size of the passivating agent is 5 to 60 ⁇ m, preferably less than 10 ⁇ m.
- wires filled with the passivated metal particles described above has the advantage over the wires filled with non-passivated pyrophoric metals that the yield of reactive component is higher and incorrect treatment and rejects are excluded.
- cored wires also contribute to operational and occupational safety and environmental protection, since after the winding process has ended they neither glow nor burn and do not release any, possibly harmful, metal oxides into the environment.
- the cored wire according to the invention also contains 60 to 40% by weight of ferrosilicon.
- additional components in the form of ferrosilicon containing rare earth metals can be added to the passivated pyrophoric metal, namely magnesium.
- a preferred wire filling, which in addition to passivated magnesium contains further treatment agents for the purpose of desulfurization and inoculation, is, for example, a mixture of 40 to 60% by weight of passivated magnesium with 60 to 40% by weight of ferrosilicon, with a content of 0.3 to 1.3% by weight of rare earth metals.
- such a wire filling consists of 49% by weight of magnesium and 51% by weight of ferrosilicon, optionally with a content of 0.5 to 1% by weight, preferably 0.9%. %, Rare earth metal.
- a cored wire which also alloys the treated metal, contains, in addition to the desulfurizing and inoculating components, alloying elements such as copper, manganese or tin in appropriate proportions.
- the wire filling can also contain non-metallic components, e.g. Calcium carbide, carbon or silicon dioxide. These components are used for desulfurization, carburization or as a filler to dampen the reaction. Their amount generally depends on the sulfur content of the base iron, the amount of carbon required or the intended degree of reaction damping.
- non-metallic components e.g. Calcium carbide, carbon or silicon dioxide.
- the particle size of the passivated pyrophoric metal is preferably between 0.1 to 2 mm and is particularly preferably 0.2 to about 0.7 mm.
- the additional components are in a particle size of preferably 0.05 to 2.0 mm, particularly preferably 0.1 to 1.6 mm.
- a typical cored wire sheathing consists of folded steel, rare copper tape, the wall of which is a thickness of 0.25 or 0.4 mm; Such cored wires with a total diameter of 5.9 and 13 mm are used.
- the cored wire used according to the invention is characterized by a safe application, a high yield of the reactive component and by being environmentally friendly. Due to the constant burn-up conditions and the good reproducibility of the reactive component, there is a significant quality improvement in the treated metal melts. For example, in the production of spheroidal graphite cast iron using a cored wire filled with passivated magnesium particles, this has less oxidized magnesium on the bath surface after the treatment has ended. As a result, the reject rate caused by surface defects (Dross) is significantly reduced.
- Magnesium powder (99.8% Mg) with a particle size of 0.2 to 0.7 mm was mixed with 0.3% by weight of silicone oil and passivated with 3% by weight of dicyandiamide with a particle size of 98% ⁇ 10 ⁇ m by coating.
- the precipitated graphite showed a proportion of> 90% in spherical form in a cast Y2 sample (25 mm).
- the number of Spärolites of 250 balls / mm 2 corresponded to the inoculation power of this type of wire.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Metal Extraction Processes (AREA)
- Resistance Heating (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Wire Bonding (AREA)
- Conductive Materials (AREA)
- Luminescent Compositions (AREA)
- Ropes Or Cables (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4138231A DE4138231C1 (cg-RX-API-DMAC7.html) | 1991-11-21 | 1991-11-21 | |
| DE4138231 | 1991-11-21 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0546351A2 EP0546351A2 (de) | 1993-06-16 |
| EP0546351A3 EP0546351A3 (en) | 1993-12-29 |
| EP0546351B1 true EP0546351B1 (de) | 1996-12-27 |
Family
ID=6445240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92119560A Expired - Lifetime EP0546351B1 (de) | 1991-11-21 | 1992-11-16 | Fülldraht mit einem Inhalt an passiviertem pyrophorem Metall und dessen Verwendung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5264023A (cg-RX-API-DMAC7.html) |
| EP (1) | EP0546351B1 (cg-RX-API-DMAC7.html) |
| JP (1) | JPH05222427A (cg-RX-API-DMAC7.html) |
| AT (1) | ATE146822T1 (cg-RX-API-DMAC7.html) |
| DE (2) | DE4138231C1 (cg-RX-API-DMAC7.html) |
| TR (1) | TR26635A (cg-RX-API-DMAC7.html) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4236727C2 (de) * | 1992-10-30 | 1997-02-06 | Sueddeutsche Kalkstickstoff | Mittel zur Behandlung von Metallschmelzen und dessen Verwendung |
| DE4324494C2 (de) * | 1993-07-21 | 1995-04-20 | Sueddeutsche Kalkstickstoff | Verfahren zum Behandeln von Gußeisenschmelzen |
| US6328943B1 (en) | 1998-07-09 | 2001-12-11 | Betzdearborn Inc. | Inhibition of pyrophoric iron sulfide activity |
| US6063347A (en) * | 1998-07-09 | 2000-05-16 | Betzdearborn Inc. | Inhibition of pyrophoric iron sulfide activity |
| RU2317337C2 (ru) * | 2006-02-20 | 2008-02-20 | Открытое Акционерное Общество "Завод "Универсальное Оборудование" | Порошковая проволока для присадки магния в расплавы на основе железа |
| US20080314199A1 (en) * | 2007-05-17 | 2008-12-25 | Leslie Wade Niemi | Enhanced Alloy Recovery In Molten Steel Baths Utilizing Cored Wires Doped With Deoxidants |
| JP5600639B2 (ja) * | 2011-04-28 | 2014-10-01 | 株式会社神戸製鋼所 | Ｒｅｍ添加用ワイヤー |
| US9045809B2 (en) | 2012-05-05 | 2015-06-02 | Nu-Iron Technology, Llc | Reclaiming and inhibiting activation of DRI fines |
| DE102012013662A1 (de) * | 2012-07-10 | 2014-01-16 | Mechthilde Döring-Freißmuth | Füllldraht und Verfahren zur Behandlung von Eisenschmelzen |
| RU2614915C1 (ru) * | 2015-10-16 | 2017-03-30 | Общество с ограниченной ответственностью "РЕГИОНАЛЬНАЯ ДИЛЕРСКАЯ КОМПАНИЯ" | Порошковая проволока для внепечной обработки чугуна в ковше |
| US10513753B1 (en) | 2019-01-03 | 2019-12-24 | 2498890 Ontario Inc. | Systems, methods, and cored wires for treating a molten metal |
| RU2723863C1 (ru) * | 2019-08-05 | 2020-06-17 | Общество с ограниченной ответственностью Новые перспективные продукты Технология | Проволока с наполнителем для внепечной обработки металлургических расплавов |
| JP7423079B2 (ja) * | 2021-06-21 | 2024-01-29 | 株式会社エコ・プロジェクト | 消臭剤の製造方法 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3915693A (en) * | 1972-06-21 | 1975-10-28 | Robert T C Rasmussen | Process, structure and composition relating to master alloys in wire or rod form |
| US3881913A (en) * | 1974-02-19 | 1975-05-06 | Ivan Andreevich Barannik | Method of producing granules of magnesium and its alloys |
| US3998625A (en) * | 1975-11-12 | 1976-12-21 | Jones & Laughlin Steel Corporation | Desulfurization method |
| WO1979000398A1 (en) * | 1977-12-16 | 1979-07-12 | Foseco Int | Desulphurisation of ferrous metals |
| US4174962A (en) * | 1978-04-27 | 1979-11-20 | Caterpillar Tractor Co. | Filled tubular article for controlled insertion into molten metal |
| US4279641A (en) * | 1978-08-25 | 1981-07-21 | The Dow Chemical Company | Salt-coated magnesium granules |
| US4186000A (en) * | 1978-08-25 | 1980-01-29 | The Dow Chemical Company | Salt-coated magnesium granules |
| DE3121089A1 (de) * | 1981-05-27 | 1982-12-16 | Metallgesellschaft Ag, 6000 Frankfurt | Drahtfoermiges mittel zum behandeln von metallschmelzen |
| DE3739156A1 (de) * | 1987-11-19 | 1989-06-01 | Sueddeutsche Kalkstickstoff | Stickstoffhaltiges zusatzmittel fuer stahlschmelzen |
| DE8915539U1 (de) * | 1989-03-17 | 1990-10-04 | Skw Trostberg Ag, 8223 Trostberg | Passiviertes pyrophores Metall |
-
1991
- 1991-11-21 DE DE4138231A patent/DE4138231C1/de not_active Expired - Lifetime
-
1992
- 1992-11-16 AT AT92119560T patent/ATE146822T1/de not_active IP Right Cessation
- 1992-11-16 DE DE59207767T patent/DE59207767D1/de not_active Expired - Fee Related
- 1992-11-16 EP EP92119560A patent/EP0546351B1/de not_active Expired - Lifetime
- 1992-11-20 TR TR92/1130A patent/TR26635A/xx unknown
- 1992-11-20 JP JP4311855A patent/JPH05222427A/ja active Pending
- 1992-11-20 US US07/979,218 patent/US5264023A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE4138231C1 (cg-RX-API-DMAC7.html) | 1992-10-22 |
| DE59207767D1 (de) | 1997-02-06 |
| JPH05222427A (ja) | 1993-08-31 |
| US5264023A (en) | 1993-11-23 |
| TR26635A (tr) | 1995-03-15 |
| EP0546351A3 (en) | 1993-12-29 |
| ATE146822T1 (de) | 1997-01-15 |
| EP0546351A2 (de) | 1993-06-16 |
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