KR870004162A - Process for producing sulfur, oxygen and nitrogen based alloys based on iron, cobalt and nickel - Google Patents

Abstract

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Description

Process for producing sulfur, oxygen and nitrogen based alloys based on iron, cobalt and nickel

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1 shows the relationship between residual magnesium (Mg), final sulfur content, desulfurization coefficient (k) and magnesium oxide (MgO) in the basic refractory material of a container when 0.5% of aluminum metal (Al) is contained. Graf,

2 shows the amount of aluminum remaining and the time of desulfurization phenomenon when crucible and calcia (CaO) crucible composed of basic refractory materials containing different magnesium oxide are used for comparison purposes, respectively. Graf showing change.

3 is a graph showing the temporal change of deoxygenation, desulfurization and nitrogen content occurring in the molten alloys of Examples 1 and 2. FIG.

Claims (25)

Based on iron, nickel and or cobalt, with an oxygen content below 0.002%, a sulfur content below 0.002% and a nitrogen content below 0.03%, (a) 15-85% calcium oxide, 15-75% In a group consisting of iron, nickel and cobalt in a container selected from the group consisting of ladles, converters, lime crucibles and lime crucibles covered with a basic refractory containing magnesium oxide and up to 1% silicon dioxide (B) aluminum, aluminum alloy, silicon, and silicon alloy containing an alloy molten metal containing at least one main component selected, and (b) an alloy molten metal in a vacuum or a gas selected from the group consisting of a non-oxidizing gas and a vacuum. At least one additive selected from the group consisting of (c) desulfurization of the molten alloy under a gas or vacuum selected from the group consisting of a non-oxidizing gas or a vacuum Oxidization, deoxygenation and denitrification, whereby the molten alloy contains 0.005 to 7.0% of residual aluminum, 0.0001 to 0.02% of remaining calcium, and 0.0005 to 0.03% of remaining magnesium, and (d) Method for producing an alloy consisting of steps cast to a molded object. Based on iron, nickel and or cobalt, the molten alloy prior to casting contains 0.005 to 7% residual aluminum, 0.005 to 7% residual silicon, 0.0001 to 0.005% residual calcium, and 0.0005 to 0.005% residual magnesium. Method for producing an alloy to Based on iron, nickel and or cobalt, with an oxygen content of up to 0.003%, a sulfur content of 0.010% and a nitrogen content of 0.03%, (a) 15 to 85% calcium oxide, 15 to 75% oxidation Selected from the group consisting essentially of iron, nickel and cobalt in a container selected from the group consisting of ladles, converters, lime crucibles and lime crucibles covered with basic refractory materials containing magnesium and up to 1% silicon dioxide It contains an alloy molten metal containing at least one main component, and (b) is contained in an aluminum or iron shell in a line or rod form in the molten alloy in a gas or vacuum selected from the group consisting of non-oxidizing gas and vacuum. Aluminum metal calcium, metal magnesium, aluminum based alloys, calcium based alloys, and magnesium based alloys of at least one element. (C) desulfurization, deoxygenation and denitrification of the molten alloy under a gas and vacuum selected from the group consisting of a non-oxidizing gas or a vacuum, thereby adding an alloy The molten metal contains 0.005 to 7.0% of residual aluminum, 0.005 to 7.0% of remaining silicon, 0.0001 to 0.005% of remaining calcium and 0.0005 to 0.03% of remaining magnesium, and (d) casting the molten alloy into a molded article. Method for producing an alloy consisting of steps. Based on iron, nickel and or cobalt, with an oxygen content of 0.003% or less, a sulfur content of 0.010% or less and a nitrogen content of 0.03% or less, (a) 15-85% calcium oxide, 15-75% At least one selected from the group consisting of iron, nickel, and cobalt in a container selected from the group consisting of ladles, lime crucibles and lime crucibles covered with basic refractory materials containing magnesium oxide and up to 1% silicon dioxide; Filling an alloy molten metal containing one main component, and (b) Depending on the alloy molten metal in a vacuum or a gas selected from the group consisting of a non-oxidizing gas or a vacuum, the alloy molten metal into the aluminum or iron shell in the form of a line or rod A core consisting essentially of at least one of metallic aluminum, metallic calcium, metallic magnesium, an alloy based on aluminum, and an alloy based on magnesium. (C) a flux of less than 5% containing a first additive consisting of a composite bonding material having at least one compound selected from the group consisting of oxides, silicates, carbonates, carbides and halogen compounds of alkali metals and alkaline earth metals, (c) Desulfurization, deoxygenation and denitrification of the alloy melt under a gas or vacuum selected from the group consisting of a non-oxidizing gas and a vacuum, whereby the alloy melt contains 0.005 to 7.0% residual aluminum, 0.0001 to 0.005% residual calcium, And 0.0005 to 0.03% of residual magnesium, and (d) casting the molten alloy into a molded article. Based on iron, nickel and or cobalt, with an oxygen content of up to 0.003%, a sulfur content of up to 0.010% and a nitrogen content of up to 0.03%, (a) 15 to 85% calcium oxide, 15 to 75% Consisting essentially of iron, nickel, and cobalt in a vessel selected from the group consisting of ladles, converters, lime crucibles, lime crucibles, etc., covered with a basic refractory containing magnesium oxide and up to 1% silicon dioxide Filling an alloy melt containing at least one component selected from the group, and (b) aluminium, aluminum alloy, titanium in the alloy melt, depending on the alloy melt in a vacuum or a gas selected from the group consisting of a non-oxidizing gas and a vacuum. At least one additive selected from the group consisting of, zirconium, niobium boron and rare earth elements, oxides, silicates, carbonates, carbides and alkali metals and alkaline earths 5% or less of flux containing at least one compound selected from the group consisting of halogen compounds of the metals and the like is added, and (c) desulfurization of the molten alloy under a gas or vacuum selected from the group consisting of non-oxidizing gases and vacuum. And deoxygenation and denitrification, whereby the molten alloy contains 0.005 to 7.0% of remaining aluminum, 0.0001 to 0.005% of remaining calcium, and 0.0005 to 0.03% of remaining magnesium, and (d) forming the molten alloy. Method for producing an alloy consisting of casting to an object. Based on iron, nickel and or cobalt, with an oxygen content of up to 0.003%, a sulfur content of up to 0.010% and a nitrogen content of up to 0.010%, (a) 15 to 85% calcium oxide, 15 to 7% Iron, nickel, and cobalt in a container selected from the group consisting of ladles, converters, lime crucibles, lime crucibles, etc., covered with a basic refractory containing magnesium oxide, and up to 1% silicon dioxide. Melting an alloy containing at least one main component selected from the group consisting of (b) aluminum, aluminum alloy, titanium, zirconium, niobium, boron, depending on the alloy melt in a gas or vacuum selected from the group consisting of non-oxidizing gases and vacuum. And at least one additive selected from the group consisting of rare earth elements and the like, (c) deoiling the molten alloy under a vacuum or a gas consisting of a non-oxidizing gas and a vacuum; Oxidizing, deoxygenating and denitrifying, whereby the molten alloy contains 0.005 to 7.0% of remaining aluminum, 0.0001 to 0.005% of remaining calcium, and 0.0005 to 0.03% of remaining magnesium, and (d) Method for producing an alloy consisting of the step of casting into a molded object. Based on iron, nickel and or cobalt, with an oxygen content of 0.003% or less, a sulfur content of 0.010% or less and a nitrogen content of 0.010% or less, (a) 15-75% calcium oxide, 15-75% Selected from the group consisting essentially of iron, nickel and cobalt in a vessel selected from the group consisting of ladles, converters, lime crucibles and lime crucibles covered with a basic refractory containing magnesium oxide and up to 1% silicon dioxide (B) aluminum, aluminum alloy, titanium, zirconium, and niobium, which melt at least one main component and (b) in the alloy melt, in a gas or vacuum selected from the group consisting of a non-oxidizing gas and a vacuum. At least one additive selected from the group consisting of, boron and rare earth elements, oxides, silicates, carbonates, carbides and alkali and alkaline earth metals; 5% or less of flux containing at least one compound selected from the group consisting of alumina halogen compounds, etc. is added, and (c) desulfurization of the molten alloy under a gas or vacuum selected from the group consisting of non-oxidizing gases and vacuum. And carbonization and denitrification, whereby the molten alloy contains 0.005 to 7.0% of remaining aluminum, 0.0005 to 0.005% of remaining calcium and 0.0005 to 0.03% of magnesium, and (d) Method for producing an alloy consisting of the step of casting. Based on iron, nickel and or cobalt, with an oxygen content of 0.003% or less, a sulfur content of 0.010% or less and a nitrogen content of 0.010% or less, and (a) 15-75% of calcium oxide of 15-85% In a group consisting essentially of iron, nickel and cobalt in a vessel selected from the group consisting of ladle, converter, lime crucible and lime crucible, covered with magnesium oxide and basic refractory containing less than 1% silicon dioxide A molten alloy containing at least one main component selected, and (b) in a gas or vacuum selected from the group consisting of a non-oxidizing gas and a vacuum, depending on the alloy melt, in the group consisting of aluminum and an aluminum alloy Adding a first additive selected and a second additive selected from the group consisting of titanium, zirconium, niobium, boron and rare earth elements, (c) non-oxidizing gases and vacuum Desulfurization, carbonation and denitrification of the molten alloy under a gas or vacuum selected from the group consisting of: alloy molten metal is 0.005 to 7.0% residual aluminum, 0.0001 to 0.005% residual calcium, 0.0005 to 0.005% Containing remaining magnesium, (d) The method of producing an alloy comprising the step of casting the molten alloy into a molded article. Based on iron, nickel and or cobalt, with an oxygen content of 0.003% or less, a sulfur content of 0.010% or less and a nitrogen content of 0.010% or less, (a) 15-75% magnesium oxide, 15-85% At least one selected from the group consisting of iron, nickel and cobalt in a container selected from the group consisting of ladles, converters, lime crucibles and lime crucibles covered with a basic refractory material consisting of calcium oxide and less than 1% silicon dioxide (B) in the group consisting of aluminum, aluminum alloy, silicon and silicon alloy in the alloy melt according to the alloy melt in a gas or vacuum selected from the group consisting of non-oxidizing gas and vacuum; Selected first additives and second additives selected from the group consisting of titanium, zirconium, niobium, boron and rare earth elements and oxides, silicates, carbonates, carbides and eggs 5% or less flux containing at least one compound selected from lye metals, alkali earth metals and halogen compounds of alumina is added, and (c) deoxidizing the molten alloy under a gas or vacuum selected from the group consisting of non-oxidizing gas and vacuum. Sulfurization, carbonation and denitrification, whereby the molten alloy contains 0.005 to 7.0% of remaining aluminum, 0.0001 to 0.005% of remaining calcium and 0.0005 to 0.005% of magnesium, and (d) forming the molten alloy. Method of producing an alloy consisting of casting to an object. Based on iron, nickel and or cobalt, with an oxygen content of up to 0.003%, a sulfur content of up to 0.010% and a nitrogen content of up to 0.010%, (a) 15-75% magnesium oxide and 15-85% Group consisting essentially of iron, nickel and cobalt in a vessel selected from the group consisting of ladles, converters, lime crucibles and lime crucibles covered with basic refractory materials containing calcium oxide and up to 1% silicon dioxide (B) filling an alloy molten alloy containing at least one main component selected from (b) in a gas or vacuum selected from the group consisting of a non-oxidizing gas and a vacuum, depending on the alloy molten metal, aluminum, aluminum alloy, titanium, At least one additive selected from the group consisting of zirconium, niobium, boron and rare earth elements, oxides, silicate carbonates, carbides and alkali metals and alkalis A flux of 5% or less containing at least one compound selected from the group consisting of halogenated compounds of the lithometals is added, and (c) desulfurization of the molten alloy under a gas or vacuum selected from the group consisting of non-oxidizing gases and vacuum. Oxidizing, deoxygenating and denitrifying, whereby the molten alloy contains 0.005 to 7.0% of remaining aluminum, 0.0001 to 0.005% of remaining calcium, and 0.0005 to 0.005% of magnesium, and (d) forming the molten alloy. Method of producing an alloy consisting of casting to an object. The method according to any one of claims 1 to 10, wherein the non-oxidizing gaseous environment is made of argon gas. The method according to any one of claims 1 to 3, wherein the flux consists of calcium oxide and calcium fluoride. A process according to any one of claims 2 and 10, wherein said flux consists of calcium oxide, calcium fluoride and aluminum oxide. Essentially 0.005 to 7.0% aluminum, 0.005 to 7.0% silicon, 0.0005 to 0.005% magnesium, 0.0001 to 0.005% calcium, 0.0001 to 0.002% oxygen, 0.0001 to 0.002% sulfur and 0.0005 to 0.003% nitrogen And an alloy based on iron. Essentially 0.005 to 7.0% aluminum, 0.005 to 7.0% silicon, 0.0005 to 0.005% magnesium, 0.0001 to 0.005% calcium, 0.0001 to 0.002% oxygen, 0.0001 to 0.002% sulfur and 0.0005 to 0.003% nitrogen Alloys containing nickel and the like. Essentially 0.005 to 7.0% aluminum, 0.005 to 7.0% silicon, 0.0005 to 0.005% magnesium, 0.0001 to 0.005% calcium, 0.0001 to 0.002% oxygen, 0.0001 to 0.002% sulfur and 0.0005 to 0.003% nitrogen An alloy based on cobalt. A process for producing an alloy based on iron, nickel and or cobalt, generally the same as described in the above examples. A process for producing an alloy based on iron, nickel and or cobalt, generally the same as described above with reference to the accompanying drawings. The alloy of claim 14 which is based on substantially the same iron as described in the above examples. The alloy of claim 14 based on substantially the same iron as described above with reference to the accompanying drawings. The alloy of claim 15 which is based substantially on nickel as described in the examples above. The alloy of claim 15 based on nickel generally the same as described above with reference to the accompanying drawings. The alloy of claim 15 based on cobalt as substantially the same as described in the above examples. The alloy of claim 16 based on cobalt as generally as described above with reference to the accompanying drawings. An alloy based on iron, nickel or cobalt and made by the method of any one of claims 1 to 13. ※ Note: The disclosure is based on the initial application.