CN109628823A - Silicochromium vanadium alloy and preparation method thereof - Google Patents

Silicochromium vanadium alloy and preparation method thereof Download PDF

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CN109628823A
CN109628823A CN201811613927.7A CN201811613927A CN109628823A CN 109628823 A CN109628823 A CN 109628823A CN 201811613927 A CN201811613927 A CN 201811613927A CN 109628823 A CN109628823 A CN 109628823A
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silicochromium
content
vanadium alloy
less
equal
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陈来祥
陈漪恺
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MAANSHAN ZHONGKE METALLURGICAL MATERIAL TECHNOLOGY Co Ltd
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MAANSHAN ZHONGKE METALLURGICAL MATERIAL TECHNOLOGY Co Ltd
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    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0235—Starting from compounds, e.g. oxides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/36—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese

Abstract

The invention proposes a kind of silicochromium vanadium alloy and preparation method thereof, the component including following weight percent: Si:8~26%, Cr:7~25%, V:4~20%, surplus Fe.Silicochromium vanadium alloy is that each component is prepared by roasting reduction technique.The alloy can replace silicochromium and silicon vanadium alloy simultaneously, solve the problems, such as that the problem of silicone content cascade matching and application effect are unstable.

Description

Silicochromium vanadium alloy and preparation method thereof
Technical field
The invention belongs to technical field of iron-base alloy, and in particular to a kind of silicochromium vanadium alloy and preparation method thereof.
Background technique
Usually based on manganese iron, ferrosilicon, ferrochrome etc., microalloy refers to be added the alloying of steel again on the basis of main ferroalloy Add micro niobium, vanadium, titanium etc. to form the ferroalloy of carbon nitrogen matter-element element, is widely used in producing high strength cast iron, low-alloy high-strength Spend steel and pipe line steel etc..
Above-mentioned manganese iron, ferrosilicon, ferrochrome etc. belong to ferroalloy field, and ferroalloy is commonly used for the additive made steel and cast. Disclose a kind of Silicon nitride vanadium alloy in the prior art, wherein the nitrogen of vanadium, 13~15wt% containing 52~55wt%, 6~ The silicon of 10wt%, surplus are iron and inevitable impurity, and the mass ratio of vanadium and nitrogen is 3.6~4.5, is applied to When the production of HRB500E reinforcing bar, microalloying effect is poor.CN200880001235.5 discloses a kind of iron-nickel-chromium-silicon alloy, It contains (in terms of weight %) 34 to 42% nickel, 18 to 26% chromium, 1.0 to 2.5% silicon and following additive: 0.05 to 1% Al, 0.01 to 1% Mn, 0.01 to 0.26% lanthanum, 0.0005 to 0.05% magnesium, 0.01 to 0.14% carbon, 0.01 to 0.14% nitrogen, most 0.01% sulphur, most 0.005% B, balance iron and preparation process generate common miscellaneous Matter.
Silicochromium is for as reducing agent and alloying constituent, when Refining Chromium Iron also to may be selected as reducing agent when making steel and casting. And silicon vanadium alloy for molten steel alloying constituent and optimizes its performance to chilled cast iron alloying.If silicochromium and silicon vanadium alloy join It closes and uses, application range will be widened, and can be used for alloying constituent and reducing agent when making steel and casting, can be also used for steel The alloying of water, it may also be used for the depth deoxidier of molten steel and cast steel.However, meeting is used in combination in silicochromium and silicon vanadium alloy There are the following problems:
1) superposition of two kinds of Silicon In Alloys contents and matching problem make to be used in combination to be restricted again.2) both conjunctions are prepared Gold generally requires purer material, material containing vanadium, chromate-containing materials, then by required composition proportion and carries out electric furnace Reduction melting, higher cost.3) alloying and composition adjustment are being carried out to middle-low alloy steel using silicon vanadium alloy, while added Ferrochrome；Silicochromium is used for the alloying constituent in steel-making and casting process, vanadium alloy is often added and carry out hydrodynamics. Be used in mixed way so often adulterated in mass production human factor and other process variables in wherein, influence application effect shakiness It is fixed.4) simple substance element is in molten steel microalloying strengthening process in silicochromium and silicon vanadium alloy, mainly solution strengthening, different Simple substance element, solid solution strengthening effect is also different.Compared with precipitation strength, the latter's effect is much excellent for another aspect solution strengthening In the former effect.Therefore, existing product silicochromium or silicon vanadium alloy be not excellent for steel microalloying strengthening effect.
Summary of the invention
The present invention proposes that a kind of silicochromium vanadium alloy, the alloy can replace silicochromium and silicon vanadium alloy simultaneously, solve The problem of silicone content cascade matching and the unstable problem of application effect.
The technical scheme of the present invention is realized as follows:
A kind of silicochromium vanadium alloy, the component including following weight percent:
Si:8~26%, Cr:7~25%, V:4~20%, surplus Fe.
It preferably, further include C and N, the content of the C is 0.2~7.5%, and the content of the N is 5~17%.
It preferably, further include Mn, Ti, B and Nb, the content of the Mn is less than or equal to 6.5%, and the content of the Ti is small In being equal to 7.0%, the content of the Nb is less than or equal to 6%, and the content of the B is less than or equal to 2.8%.
It preferably, further include Ca, Mg and Al, the content of the Ca is less than or equal to 6.8%, and the content of the Mg is less than or equal to The content of 1.9%, the Al are less than or equal to 3.6%.
It preferably, further include Ca, Mg and Al, the content of the Ca is less than or equal to 6.8%, and the content of the Mg is less than or equal to The content of 1.9%, the Al are less than or equal to 3.6%.
Preferably, the silicochromium vanadium alloy is that each component is prepared by roasting reduction technique.
It is a further object to provide a kind of preparation methods of silicochromium vanadium alloy, comprising the following steps:
1) pretreatment of raw material: weighing the raw material of each component according to the proportion, then carries out except impurity and moisture, then carry out fine grinding Differentiation, obtains powder；
2) powder of step 1), bonding agent and reducing agent are uniformly mixed, obtain mixture；The additive amount of bonding agent It is the 2~3% of powder weight, the additive amount of reducing agent is the 6~23% of powder weight；
3) it adds mixture to and carries out reduction sintering in reduction sintering furnace and be filled with protective gas into furnace, reduction sintering Temperature is 700~1580 DEG C, and slow cooling is come out of the stove to 400 DEG C or less after reduction sintering.
Preferably, the raw material is the pure metals containing component, the compound-material containing component or the simple substance containing component The mixing material of material and its compound-material.
Preferably, the bonding agent is nano material modified phenolic resins, in the nano material modified phenolic resins Tan Han Liang≤62%；The reducing agent is one or more of carbon dust, silicon powder and aluminium powder, Tan Han Liang in the carbon dust≤ 95%, silicone content Wei≤98% in the silicon powder, aluminium content Wei≤96% of the aluminium powder.
Preferably, the protective gas of the step 3) is the mixed gas of argon gas and nitrogen；Reduction sintering actual conditions Are as follows: temperature is first warming up to 700~800 DEG C, keeps the temperature 1~2h, is continuously heating to 1100~1200 DEG C, keeps the temperature 2.5~3.5h, then 1480 DEG C~1580 DEG C are warming up to, 2.5~3.5h is kept the temperature.
Beneficial effects of the present invention:
1) present invention optimizes silicochromium vanadium alloy ingredient, is replacing silicochromium respectively and is replacing the application of silicon vanadium alloy In terms of steel-making or cast iron, does not need to add vanadium-containing alloy or chrome-bearing alloy again, simplify application process, effectively widened silicochromium The application range of alloy and silicon vanadium alloy solves the problems, such as that the problem of silicone content cascade matching and application effect are unstable.
2) present invention selects roasting reduction to the optimization of silicochromium vanadium alloy reasonable composition and preparation method, not to the raw material used It is harsh compared with the purity requirement as traditional silicochromium with silicon vanadium alloy again.The present invention can select or add containing Si, Cr, The byproduct of V compound either slag charge, makes its manufacturing cost sharp fall, overall cost is than silicochromium and silicon vanadium alloy Reduce by 40% or more, while providing new effective way to the fixed-end forces in certain process of producing product, safety and environmental protection without Waste discharge.
Specific embodiment
Technical solution of the present invention is described in further detail below.
The technical solution of taproot of the present invention are as follows: a kind of silicochromium vanadium alloy, the component including following weight percent:
Si:8~26%, Cr:7~25%, V:4~20%, surplus Fe.
In some preferred embodiments, we select addition C and N, it is proposed that the content of C is that the content of 0.2~7.5%, N is 5~17%.This is because suitable C, N, significantly increase the performance of Si, Cr, V strengthening effect in alloy.C, N simultaneously with Si, Cr, V are acted in roasting reduction furnace, not only form nitride and carbonitride, but also form polynary complex nitride and carbon Nitride, and phase structure is uniform.
In some preferred embodiments, we select face addition Mn, Ti and Nb or individually addition on the basis of C and N Mn, Ti and Nb, it is proposed that the content of Mn is that content less than or equal to 6.5%, Ti is that content less than or equal to 7.0%, Nb is less than etc. In 6%.
In some preferred embodiments, we select face addition Ca, Mg and Al or individually addition on the basis of C and N Ca, Mg and Al, it is proposed that the content of Ca less than or equal to 6.8%, Mg content less than or equal to 1.9%, Al content be less than or equal to 3.6%.Silicochromium vanadium alloy has suitable in alloy as the reducing agent or deoxidier in molten steel or cast iron and cast steel alloy process Ca, Mg, Ti, Al are highly beneficial, while limited content and ensure that silicochromium vanadium alloy in other aspects in a certain range again Using unaffected.
Silicochromium vanadium alloy of the invention is that each component is prepared by roasting reduction technique.
In some preparation embodiments, bonding agent selects nano material modified phenolic resins, and the C content of the bonding agent is >=62%.Select such bonding agent mainly to consider as follows: 1) nanometer materials good dispersion, bond strength are uniform.2) nanometer The agglutinating property of grade material during the late stages of developmet is good, and the compactness and intensity of novel alloy can be improved.3) carbon in bonding agent can be complete It is utilized entirely.4) bonding agent is seldom to the subsidiary impurity of the final products of alloy.
It is to adopt as Si, Cr and V of host element and other auxiliary elements in entire preparation embodiment of the invention Segmentation selective reduction is taken, and is realized in same furnace with its continuous technical process.According to the thermodynamic behaviour of each element, go after profit or gain Evil is kept away, being precisely controlled for its ingredient is reached.
In entire preparation embodiment of the invention, the selection of reducing agent also has one's own knack.If C is general reducing agent, It is usually the endothermic reaction in reduction process, it is excessively high to the temperature requirement of certain element compounds reduction, but C reduction elements oxide Good to the sensibility of reducing atmosphere vacuum degree, its easily controllable vacuum degree reaches target.If Si and Al are partially strong reduction Agent is usually exothermic reaction in reduction process, local reduction temperature can be made to reach very high in reduction process, to most elements Oxide can make its reduction, the present invention is by several reducing agent reasonable selections of C, Si, Al simultaneously to temperature in burner hearth and vacuum Degree is controlled, and guarantees that silicochromium vanadium alloy ingredient accurately reaches target value.
In some preparation embodiments, protective gas selection argon gas and nitrogen etc. can be used as protective gas, the present invention It is preferred that hybrid protection gas is mixed in a certain ratio one of use, superior effect is achieved.
In some preparation embodiments, raw material is the mixing material of pure metals and its compound-material containing component, tool Body are as follows: SiO2: 18~46%, Cr2O3: 11~35%, V2O5: 8~36%, contain suitable CaO, MgO, Al2O3、TiO2、MnO、 NbO、B2O3, surplus Fe, Fe2O3And impurity.
Embodiment 1
A kind of silicochromium vanadium alloy, the component including following weight percent:
Si:8%, Cr:25%, V:4%, surplus Fe.
The preparation method of silicochromium vanadium alloy:
1) pretreatment of raw material: weighing the raw material of each component according to the proportion, then carries out except impurity and moisture, then carry out fine grinding Differentiation, obtains powder；Raw material is the pure metals containing component；
2) powder of step 1), bonding agent and reducing agent are uniformly mixed, obtain mixture, blocky or ball is made Group；The additive amount of bonding agent is the 2% of powder weight, and the additive amount of reducing agent is the 13% of powder weight；
3) it adds mixture in reduction sintering furnace and carries out reduction sintering and be filled with protective gas (protectiveness gas into furnace Body is the mixed gas of argon gas and nitrogen), temperature is first warming up to 700 DEG C, keeps the temperature 2h, is continuously heating to 1100 DEG C, heat preservation 3.5h, then be warming up to 1580 DEG C keeps the temperature 2.5h, and slow cooling is come out of the stove to 400 DEG C or less after sintering.
Bonding agent is nano material modified phenolic resins, Tan Han Liang≤62% in nano material modified phenolic resins；Also Former agent is carbon dust, silicon powder and aluminium powder, Tan Han Liang≤95% in carbon dust, silicone content Wei≤98% in silicon powder, and the aluminium content of aluminium powder is ≤ 96%.
Embodiment 2
A kind of silicochromium vanadium alloy, the component including following weight percent:
Si:20%, Cr:19%, V:18%, C:0.2%, N:17%, surplus Fe.
The preparation method of silicochromium vanadium alloy, comprising the following steps:
1) pretreatment of raw material: weighing the raw material of each component according to the proportion, then carries out except impurity and moisture, then carry out fine grinding Differentiation, obtains powder；Raw material is the pure metals containing component；
2) powder of step 1), bonding agent and reducing agent are uniformly mixed, obtain mixture；The additive amount of bonding agent It is the 3% of powder weight, the additive amount of reducing agent is the 6% of powder weight；
3) it adds mixture in reduction sintering furnace and carries out reduction sintering and be filled with protective gas (protectiveness gas into furnace Body is the mixed gas of argon gas and nitrogen), temperature is first warming up to 800 DEG C, keeps the temperature 1h, is continuously heating to 1100 DEG C, heat preservation 2.5h, then be warming up to 1480 DEG C keeps the temperature 3.5h, and slow cooling is come out of the stove to 400 DEG C or less after sintering.
Bonding agent is nano material modified phenolic resins, Tan Han Liang≤62% in nano material modified phenolic resins；Also Former agent is carbon dust, silicon powder and aluminium powder, Tan Han Liang≤95% in carbon dust, silicone content Wei≤98% in silicon powder, and the aluminium content of aluminium powder is ≤ 96%.
Embodiment 3
A kind of silicochromium vanadium alloy, the component including following weight percent:
Si:26%, Cr:7%, V:20%, C:5%, N:10%, Mn:4%, Ti:6%, Ca:4.6%, Mg:1.9%, Al:3.6%, B:0.5%, surplus Fe.
The preparation method of silicochromium vanadium alloy:
1) pretreatment of raw material: weighing the raw material of each component according to the proportion, then carries out except impurity and moisture, then carry out fine grinding Differentiation, obtains powder；Raw material specifically: SiO2: 18~46%, Cr2O3: 11~35%, V2O5: 8~36%, containing few CaO, MgO、Al2O3、TiO2, MnO, surplus Fe, Fe2O3And impurity.
2) powder of step 1), bonding agent and reducing agent are uniformly mixed, obtain mixture, blocky or ball is made Group；The additive amount of bonding agent is the 2% of powder weight, and the additive amount of reducing agent is the 20% of powder weight；
3) it adds mixture in reduction sintering furnace and carries out reduction sintering and be filled with protective gas (protectiveness gas into furnace Body is the mixed gas of argon gas and nitrogen), temperature is first warming up to 700 DEG C, keeps the temperature 2h, is continuously heating to 1100 DEG C, heat preservation 3.5h, then be warming up to 1580 DEG C keeps the temperature 2.5h, and slow cooling is come out of the stove to 400 DEG C or less after sintering.
Bonding agent is nano material modified phenolic resins, Tan Han Liang≤62% in nano material modified phenolic resins；Also Former agent is carbon dust, silicon powder and aluminium powder, Tan Han Liang≤95% in carbon dust, silicone content Wei≤98% in silicon powder, and the aluminium content of aluminium powder is ≤ 96%.
Embodiment 4
A kind of silicochromium vanadium alloy, the component including following weight percent:
Si:12%, Cr:10%, V:8%, C:4%, N:5%, Mn:6.5%, Ti:7%, Nb:6%, B:2.8%, surplus For Fe.
The preparation method of silicochromium vanadium alloy, comprising the following steps:
1) pretreatment of raw material: weighing the raw material of each component according to the proportion, then carries out except impurity and moisture, then carry out fine grinding Differentiation, obtains powder；Raw material is the mixing material of pure metals and its compound-material containing component.
2) powder of step 1), bonding agent and reducing agent are uniformly mixed, obtain mixture；The additive amount of bonding agent It is the 3% of powder weight, the additive amount of reducing agent is the 13% of powder weight；
3) it adds mixture in reduction sintering furnace and carries out reduction sintering and be filled with protective gas (protectiveness gas into furnace Body is the mixed gas of argon gas and nitrogen), temperature is first warming up to 750 DEG C, keeps the temperature 1.2h, is continuously heating to 1160 DEG C, heat preservation 3h, then be warming up to 1520 DEG C keeps the temperature 3h, and slow cooling is come out of the stove to 400 DEG C or less after sintering.
Bonding agent is nano material modified phenolic resins, Tan Han Liang≤62% in nano material modified phenolic resins；Also Former agent is carbon dust, silicon powder and aluminium powder, Tan Han Liang≤95% in carbon dust, silicone content Wei≤98% in silicon powder, and the aluminium content of aluminium powder is ≤ 96%.
Embodiment 5
A kind of silicochromium vanadium alloy, the component including following weight percent:
Si:14%, Cr:16%, V:10%, C:7.5%, N:8%, Ca:6.8%, Mg:1%, Al:2%, surplus Fe.
The preparation method of silicochromium vanadium alloy, comprising the following steps:
1) pretreatment of raw material: weighing the raw material of each component according to the proportion, then carries out except impurity and moisture, then carry out fine grinding Differentiation, obtains powder；Raw material is the mixing material of pure metals and its compound-material containing component.
2) powder of step 1), bonding agent and reducing agent are uniformly mixed, obtain mixture, blocky or ball is made Group；The additive amount of bonding agent is the 2% of powder weight, and the additive amount of reducing agent is the 23% of powder weight；
3) it adds mixture in reduction sintering furnace and carries out reduction sintering and be filled with protective gas (protectiveness gas into furnace Body is the mixed gas of argon gas and nitrogen), temperature is first warming up to 700 DEG C, keeps the temperature 2h, is continuously heating to 1200 DEG C, heat preservation 3.5h, then be warming up to 1580 DEG C keeps the temperature 3.0h, and slow cooling is come out of the stove to 400 DEG C or less after sintering.
Bonding agent is nano material modified phenolic resins, Tan Han Liang≤62% in nano material modified phenolic resins；Also Former agent is carbon dust, silicon powder and aluminium powder, Tan Han Liang≤95% in carbon dust, silicone content Wei≤98% in silicon powder, and the aluminium content of aluminium powder is ≤ 96%.
Test example
Using 3 silicochromium vanadium alloy of embodiment as experimental group, silicochromium+silicon vanadium alloy is that control group carries out being separately employed in molten steel Deoxidation, molten steel alloying and steel microalloying, the former deoxidation effect is good and stablizes, and yield of alloy is high and stablizes, and steel is strong It is excellent and stable to change effect, concrete outcome is shown in Table 1.
Table 1

Claims (10)

1. a kind of silicochromium vanadium alloy, which is characterized in that the component including following weight percent:
Si:8~26%, Cr:7~25%, V:4~20%, surplus Fe.
2. silicochromium vanadium alloy according to claim 1, which is characterized in that it further include C and N, the content of the C is 0.2~ The content of 7.5%, the N are 5~17%.
3. silicochromium vanadium alloy according to claim 1 or 2, which is characterized in that it further include Mn, Ti, B and Nb, the Mn's Content is less than or equal to 6.5%, and the content of the Ti is less than or equal to 7.0%, and the content of the Nb is less than or equal to 6%, the B Content is less than or equal to 2.8%.
4. silicochromium vanadium alloy according to claim 1 or 2, which is characterized in that further include Ca, Mg and Al, the Ca's contains Amount is less than or equal to 6.8%, and the content of the Mg is less than or equal to 1.9%, and the content of the Al is less than or equal to 3.6%.
5. silicochromium vanadium alloy according to claim 3, which is characterized in that further include Ca, Mg and Al, the content of the Ca is small In being equal to 6.8%, the content of the Mg is less than or equal to 1.9%, and the content of the Al is less than or equal to 3.6%.
6. silicochromium vanadium alloy according to claim 1, which is characterized in that the silicochromium vanadium alloy is that each component is passed through to roasting Reducing process is burnt to be prepared.
7. the preparation method of the silicochromium vanadium alloy as described in claim 1 to 6 any one, which is characterized in that including following step It is rapid:
1) pretreatment of raw material: weighing the raw material of each component according to the proportion, then carries out except impurity and moisture, then carries out fine grinding point Change, obtains powder；
2) powder of step 1), bonding agent and reducing agent are uniformly mixed, obtain mixture；The additive amount of bonding agent is powder Expect the 2~3% of weight, the additive amount of reducing agent is the 6~23% of powder weight；
3) it adds mixture to and carries out reduction sintering in reduction sintering furnace and be filled with protective gas into furnace, restore sintering temperature It is 700~1580 DEG C, slow cooling is come out of the stove to 400 DEG C or less after reduction sintering.
8. the preparation method of silicochromium vanadium alloy according to claim 7, which is characterized in that the raw material is the list containing component The mixing material of material, the compound-material containing component or the pure metals containing component and its compound-material.
9. the preparation method of silicochromium vanadium alloy according to claim 7, which is characterized in that the bonding agent is nano material Phenol-formaldehyde resin modified, Tan Han Liang≤62% in the nano material modified phenolic resins；The reducing agent be carbon dust, silicon powder with One or more of aluminium powder, Tan Han Liang≤95% in the carbon dust, silicone content Wei≤98% in the silicon powder, the aluminium powder Aluminium content Wei≤96%.
10. the preparation method of silicochromium vanadium alloy according to claim 7, which is characterized in that the protectiveness of the step 3) Gas is the mixed gas of argon gas and nitrogen；Reduction sintering actual conditions are as follows: temperature is first warming up to 700~800 DEG C, heat preservation 1 ~2h is continuously heating to 1100~1200 DEG C, keeps the temperature 2.5~3.5h, then be warming up to 1480 DEG C~1580 DEG C, and heat preservation 2.5~ 3.5h。
CN201811613927.7A 2018-12-27 2018-12-27 Silicochromium vanadium alloy and preparation method thereof Pending CN109628823A (en)

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CN111440988A (en) * 2020-05-21 2020-07-24 中冶东方工程技术有限公司 Silicon-vanadium alloy production method and silicon-vanadium alloy
TWI829129B (en) * 2021-03-30 2024-01-11 挪威商艾爾坎股份有限公司 Ferrosilicon vanadium and/or niobium alloy, production of a ferrosilicon vanadium and/or niobium alloy, and the use thereof

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CN107686353A (en) * 2017-08-22 2018-02-13 东北大学 A kind of preparation method of high-strength conducting carbonization ferrosilicon composite porous ceramic

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CN111020358A (en) * 2019-12-30 2020-04-17 马鞍山中科冶金材料科技有限公司 Rare earth silicon-nitrogen alloy and preparation method and application thereof
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