CN103667766B - A kind of nitro-alloy and preparation method thereof - Google Patents
A kind of nitro-alloy and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of nitro-alloy and preparation method thereof, does described nitro-alloy comprise the Si of mass percent? 8.94 ~ 11.85%, Fe? 7.82 ~ 8.21%, Mn? 58.86 ~ 61.22%, C? 0.77 ~ 1.45%, O? 1.04 ~ 2.43%, N? 16.75 ~ 18.02%.Described preparation method comprises pre-treatment, preparation process, specifically comprise: raw material silicomanganese and manganeseirom are ground respectively, mix, be bonded to the spheroid of diameter 0.5 ~ 1.5cm with binding agent, seal after inserting electrothermal oven, extract the air in stove out, blast the nitrogen of deoxidation treatment, electrified regulation electrothermal oven, be incubated when temperature reaches 1140 ~ 1160 DEG C in stove and within 5 ~ 7 hours, start cooling, after being incubated 2 ~ 4 hours when cooling to 750 ~ 850 DEG C, cooling obtains target compound.The invention provides a kind of silicomanganese and manganeseirom are mixed by a certain percentage after to produce the method for nitro-alloy with electrothermal oven heating two-part isothermal holding, achieve nitro-alloy successfully to produce, nitrogen content in its alloy can meet the needs of smelting iron and steel, and compared with traditional nitriding process, process period is short, production cost is low, and economic and social benefit is remarkable.
Description
Technical field
The invention belongs to materials science field, be specifically related to a kind of nitro-alloy and preparation method thereof.
Background technology
Nitro-alloy is in steel smelting procedure, use a kind of alloy very widely, in current Iron and Steel Production, in order to improve the intensity of steel, needing to add the alloy such as ferro-niobium or vanadium iron in the process of steel-making and reaching this effect by microalloying.In order to give full play to the V-N steel effect of niobium, vanadium, general all needs adds appropriate nitro-alloy when making steel, strong carbonitride is formed with microalloy element niobium, vanadium, improve precipitation strength and the precipitation strength effect of microalloy element, therefore, in smelting iron and steel, the use of nitro-alloy is very widely.In the stagnant situation of steel industry situation in recent years, the production cost pressure of steel is very large; The price of nitro-alloy becomes an important factor of restriction smelting iron and steel cost, therefore whether can develop the high-quality nitro-alloy that can meet needed for smelting iron and steel, become a key point that smelting iron and steel cost can be made to decline.
Summary of the invention
The first object of the present invention is to provide a kind of nitro-alloy; Second object is the preparation method providing described nitro-alloy.
The first object of the present invention is achieved in that Si8.94 ~ 11.85%, Fe7.82 ~ 8.21%, Mn58.86 ~ 61.22%, C0.77 ~ 1.45%, O1.04 ~ 2.43%, N16.75 ~ 18.02% that comprise mass percent.
The second object of the present invention is achieved in that and comprises pre-treatment, preparation process, specifically comprises:
A, pre-treatment: raw material silicomanganese and manganeseirom are ground respectively, mix, be bonded to the spheroid of diameter 0.5 ~ 1.5cm with binding agent;
B, preparation: seal after the raw material spheroid after pre-treatment is inserted electrothermal oven, extract the air in stove out, blast the nitrogen of deoxidation treatment, electrified regulation electrothermal oven, be incubated when temperature reaches 1140 ~ 1160 DEG C in stove and within 5 ~ 7 hours, start cooling, after being incubated 2 ~ 4 hours when cooling to 750 ~ 850 DEG C, cooling obtains target compound.
The invention provides a kind of silicomanganese and manganeseirom are mixed by a certain percentage after to produce the method for nitro-alloy with electrothermal oven heating two-part isothermal holding, achieve nitro-alloy successfully to produce, nitrogen content in its alloy can meet the needs of smelting iron and steel, and compared with traditional nitriding process, process period is short, production cost is low, and economic and social benefit is remarkable.The present invention is mixed in proportion after ferromanganese and silicomanganese being pulverized, and puts into electrothermal oven, air in electrothermal oven of then finding time, farthest can avoid the oxidation of hybrid alloys in heat-processed after bonding balling-up; Then in stove, pass into nitrogen after deoxidation, maintain the pressure of nitrogen between 1.7-2.0 normal atmosphere, in stove, the concentration of nitrogen is high, can add the speed of fast response, shortens the time of reacting by heating, the cost of brownout; Alloy after this method process, nitrogen content is higher, and cost is lower, economic benefit and social benefit remarkable; The nitro-alloy composition that the present invention produces can be good at meeting the needs produced in steelmaking process.
Accompanying drawing explanation
Fig. 1 is present invention process schematic flow sheet.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated, but limited the present invention never in any form, and any conversion done based on training centre of the present invention or replacement, all belong to protection scope of the present invention.
Nitro-alloy of the present invention comprises Si8.94 ~ 11.85%, Fe7.82 ~ 8.21%, Mn58.86 ~ 61.22%, C0.77 ~ 1.45%, O1.04 ~ 2.43%, N16.75 ~ 18.02% of mass percent.
The preparation method of nitro-alloy of the present invention, comprises pre-treatment, preparation process, specifically comprises:
A, pre-treatment: raw material silicomanganese and manganeseirom are ground respectively, mix, be bonded to the spheroid of diameter 0.5 ~ 1.5cm with binding agent;
B, preparation: seal after the raw material spheroid after pre-treatment is inserted electrothermal oven, extract the air in stove out, blast the nitrogen of deoxidation treatment, electrified regulation electrothermal oven, be incubated when temperature reaches 1140 ~ 1160 DEG C in stove and within 5 ~ 7 hours, start cooling, after being incubated 2 ~ 4 hours when cooling to 750 ~ 850 DEG C, cooling obtains target compound.
Described in step A, the mass ratio of raw material silicomanganese and manganeseirom is 2 ~ 5:5 ~ 7.
The particle diameter of the grinding described in step A is 0.5 ~ 1mm.
Binding agent described in step A is polyvinyl alcohol.
The rated output of the electrothermal oven described in step B is 2 ~ 3KW, temperature rating is 1200 ~ 1400 DEG C.
Nitrogen amount described in step B is for maintaining pressure at 1.7 ~ 2 normal atmosphere.
The speed of the intensification described in step B is 8 ~ 10 DEG C/min.
The speed of the cooling described in step B is 3 ~ 5 DEG C/min.
Nitrogen pressure in step B preparation process maintains 1.7 ~ 2 normal atmosphere always.
The invention provides a kind of ferromanganese and silicomanganese are mixed by a certain percentage after, produce the method for nitro-alloy through electrothermal oven two-part isothermal holding, prepare through following process steps:
A, technological preparation: silicomanganese and manganeseirom are ground to form the particle of diameter at 0.5-1mm respectively, then mix with the mass ratio of SiMn:MnFe=4:6, use the spheroid of polyvinyl alcohol bonding one-tenth diameter 1cm again, put into that rated output is 2.5 kilowatts, temperature rating is seal after 1300 DEG C of electrothermal ovens, then the air in stove is extracted out, then in electrothermal oven, blast the nitrogen through deoxidation treatment, maintain the pressure of nitrogen at 1.7-2.0 normal atmosphere.
B, temperature control: energising starts to heat electrothermal oven, and in stove, temperature reaches 1140-1160 DEG C and starts to be incubated, and start cooling, cool to 800 DEG C at 1140-1160 DEG C after being incubated 6 hours, then at 800 DEG C, are incubated 3 hours, then power-off cooling.Maintain the pressure of nitrogen in stove between 1.7-2.0 normal atmosphere in whole process always.
Alloy after C, taking-up nitrogenize: sampling analysis after alloy cool to room temperature.Step B altogether soaking time, greatly about 9 hours, namely obtains the following nitro-alloy of chemical composition:
Si：8.94-11.85wt%,、Fe：7.82-8.21wt%、Mn：58.86-61.22wt%、C：0.77-1.45wt%、O：1.04-2.43wt%、N：16.75-18.02wt%。
The present invention's nitrogen used, first through deoxidation treatment, reduces the oxygen level in nitrogen as far as possible.
The present invention has the following advantages and effect: be mixed in proportion after ferromanganese and silicomanganese being pulverized, put into electrothermal oven, air in electrothermal oven of then finding time, farthest can avoid the oxidation of hybrid alloys in heat-processed after bonding balling-up; Then in stove, pass into nitrogen after deoxidation, maintain the pressure of nitrogen between 1.7-2.0 normal atmosphere, in stove, the concentration of nitrogen is high, can add the speed of fast response, shortens the time of reacting by heating, the cost of brownout; Alloy after this method process, nitrogen content is higher, and cost is lower, economic benefit and social benefit remarkable; The nitro-alloy composition that the present invention produces can be good at meeting the needs produced in steelmaking process.
Embodiment 1
A, technological preparation: silicomanganese and manganeseirom are ground to form the particle of diameter at 0.5-1mm respectively, then mix with the mass ratio of SiMn:MnFe=4:6, use the spheroid of polyvinyl alcohol bonding one-tenth diameter 1cm again, seal after putting into electrothermal oven, then the air in stove is extracted out, then in electrothermal oven, blast the nitrogen through deoxidation treatment, maintain the pressure of nitrogen at 1.7 normal atmosphere.
B, temperature control: energising starts to heat electrothermal oven, and in stove, temperature reaches 1150 DEG C and starts to be incubated, and start cooling, cool to 800 DEG C at 1150 DEG C after being incubated 6 hours, then at 800 DEG C, are incubated 3 hours, then power-off cooling.Maintain the pressure of nitrogen in stove at 1.7 normal atmosphere in whole process always.
Sampling analysis after C, alloy cool to room temperature.Step B altogether soaking time, greatly about 9 hours, namely obtains the following nitro-alloy of chemical composition:
Si：11.64wt%,、Fe：8.21wt%、Mn：58.86wt%、C：1.73wt%、O：1.48wt%、N：17.51wt%。
Embodiment 2
A, technological preparation: silicomanganese and manganeseirom are ground to form the particle of diameter at 0.5-1mm respectively, then mix with the mass ratio of SiMn:MnFe=4:6, use the spheroid of polyvinyl alcohol bonding one-tenth diameter 1cm again, seal after putting into electrothermal oven, then the air in stove is extracted out, then in electrothermal oven, blast the nitrogen through deoxidation treatment, maintain the pressure of nitrogen at 2.0 normal atmosphere.
B, temperature control: energising starts to heat electrothermal oven, and in stove, temperature reaches 1160 DEG C and starts to be incubated, and start cooling, cool to 800 DEG C at 1160 DEG C after being incubated 6 hours, then at 800 DEG C, are incubated 3 hours, then power-off cooling.Maintain the pressure of nitrogen in stove at 2.0 normal atmosphere in whole process always.
Sampling analysis after C, alloy cool to room temperature.Step B altogether soaking time, greatly about 9 hours, namely obtains the following nitro-alloy of chemical composition:
Si：8.94wt%,、Fe：7.82wt%、Mn：60.95wt%、C：0.77wt%、O：2.43wt%、N：18.02wt%。
Embodiment 3
A, technological preparation: silicomanganese and manganeseirom are ground to form the particle of diameter at 0.5-1mm respectively, then mix with the mass ratio of SiMn:MnFe=4:6, use the spheroid of polyvinyl alcohol bonding one-tenth diameter 1cm again, seal after putting into electrothermal oven, then the air in stove is extracted out, then in electrothermal oven, blast the nitrogen through deoxidation treatment, maintain the pressure of nitrogen at 1.8 normal atmosphere.
B, temperature control: energising starts to heat electrothermal oven, and in stove, temperature reaches 1140 DEG C and starts to be incubated, and start cooling, cool to 800 DEG C at 1140 DEG C after being incubated 6 hours, then at 800 DEG C, are incubated 3 hours, then power-off cooling.Maintain the pressure of nitrogen in stove at 1.8 normal atmosphere in whole process always.
Sampling analysis after C, alloy cool to room temperature.Step B altogether soaking time, greatly about 9 hours, namely obtains the following nitro-alloy of chemical composition:
Si：9.85wt%,、Fe：8.13wt%、Mn：61.22wt%、C：1.45wt%、O：1.04wt%、N：16.75wt%。
Claims (3)
1. a nitro-alloy preparation method, is characterized in that described nitro-alloy comprises Si8.94 ~ 11.85%, Fe7.82 ~ 8.21%, Mn58.86 ~ 61.22%, C0.77 ~ 1.45%, O1.04 ~ 2.43%, N16.75 ~ 18.02% of mass percent; The preparation method of described nitro-alloy comprises pre-treatment, preparation process, specifically comprises:
A, pre-treatment: raw material silicomanganese and manganeseirom are ground respectively, mix, be bonded to the spheroid of diameter 0.5 ~ 1.5cm with binding agent polyvinyl alcohol; The mass ratio of raw material silicomanganese and manganeseirom is 2 ~ 5:5 ~ 7, and grinding particle diameter is 0.5 ~ 1mm;
B, preparation: seal after the raw material spheroid after pre-treatment is inserted electrothermal oven, extract the air in stove out, blast the nitrogen of deoxidation treatment, and nitrogen amount is for maintaining pressure at 1.7 ~ 2 normal atmosphere; Electrified regulation electrothermal oven, in stove, temperature is with 8 ~ 10 DEG C/min ramp to 1140 ~ 1160 DEG C, is incubated and within 5 ~ 7 hours, starts cooling, cool to 750 ~ 850 DEG C with 3 ~ 5 DEG C/min speed, is incubated cooling after 2 ~ 4 hours and obtains target compound.
2. nitro-alloy preparation method according to claim 1, is characterized in that the rated output of electrothermal oven described in step B is 2 ~ 3kW, temperature rating is 1200 ~ 1400 DEG C.
3. nitro-alloy preparation method according to claim 1, is characterized in that in step B preparation process, nitrogen pressure maintains 1.7 ~ 2 normal atmosphere always.
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104593632B (en) * | 2015-01-23 | 2016-10-12 | 武钢集团昆明钢铁股份有限公司 | A kind of preparation method of niobium nitride ferroalloy |
| CN105400927B (en) * | 2015-12-24 | 2017-11-21 | 马鞍山中科冶金材料科技有限公司 | A kind of multielement nitro-alloy core-spun yarn and its application and methods for using them in HRB400 steel grade strengthening treatment process |
| CN105441631A (en) * | 2015-12-24 | 2016-03-30 | 马鞍山中科冶金材料科技有限公司 | Multielement nitralloy cored wire, application of multielement nitralloy cored wire, and production method of HRB500E high-strength aseismic steel |
| CN105463287B (en) * | 2015-12-24 | 2017-07-28 | 马鞍山中科冶金材料科技有限公司 | A kind of multielement nitro-alloy material and its preparation method and application |
| CN108456817A (en) * | 2018-04-24 | 2018-08-28 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of nitro-alloy and preparation method thereof |
| CN110343943B (en) * | 2019-07-01 | 2021-02-02 | 山东钢铁股份有限公司 | High-nitrogen alloy enhancer and application thereof |
| CN110387494B (en) * | 2019-08-30 | 2021-07-13 | 攀钢集团攀枝花钢铁研究院有限公司 | Nitrogen-rich manganese-silicon-titanium-based material and preparation method thereof |
| CN110408884B (en) * | 2019-08-30 | 2021-09-14 | 攀钢集团攀枝花钢铁研究院有限公司 | Nitrogen-rich manganese-based material and preparation method thereof |
| CN110526717B (en) * | 2019-08-30 | 2021-09-14 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation method of nitrogen-rich manganese-silicon-titanium-based material |
| CN110512126B (en) * | 2019-08-30 | 2021-08-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation method of nitrogen-rich manganese-based material |
| CN110386821B (en) * | 2019-08-30 | 2022-07-05 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation method of nitrogen-rich manganese-silicon-based material |
| CN110387479B (en) * | 2019-08-30 | 2021-07-13 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation method of nitrogen-rich manganese-titanium-based material |
| CN115354116A (en) * | 2022-06-27 | 2022-11-18 | 武汉鑫能科技有限公司 | Reinforcing agent for steel making for improving performance of threaded steel bar and preparation and use methods thereof |
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