CN109482871A - Silicochromium titanium alloy and preparation method thereof - Google Patents

Silicochromium titanium alloy and preparation method thereof Download PDF

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Publication number
CN109482871A
CN109482871A CN201811615698.2A CN201811615698A CN109482871A CN 109482871 A CN109482871 A CN 109482871A CN 201811615698 A CN201811615698 A CN 201811615698A CN 109482871 A CN109482871 A CN 109482871A
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silicochromium
content
titanium alloy
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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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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/1017—Multiple heating or additional steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/1003—Use of special medium during sintering, e.g. sintering aid
    • B22F3/1007—Atmosphere
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • 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
    • 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
    • C22C38/18—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
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2201/00—Treatment under specific atmosphere
    • B22F2201/02—Nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2201/00—Treatment under specific atmosphere
    • B22F2201/10—Inert gases
    • B22F2201/11—Argon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Abstract

The invention proposes a kind of silicochromium titanium alloy and preparation method thereof, the component including following weight percent: Si:12~35%, Cr:3~19%, Ti:8~26%, surplus Fe.Silicochromium titanium alloy is that each component is prepared by roasting reduction technique.The alloy can replace ferrosilicon, ferrochrome and ferro-titanium simultaneously, solve the matching problem of alloying element content.

Description

Silicochromium titanium 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 titanium 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. The patent application of CN101984122 discloses a kind of low-alloy wear-resistant steel, and chemical composition comprises the following components in percentage by weight includes 0.38%~0.48% C, 0.9%~2.5% Si, 1.5%~2.5% Mn, 1.4%~2.0% Cr, 0.0008% ~0.003% B, 0.01%~0.04% Ce, the P no more than 0.04%, the S no more than 0.04%, surplus are Fe and not Evitable impurity.Abrasion-resistant stee hardness with higher, toughness and wearability, high comprehensive performance, can be used for sand mixer and scrape A variety of industrial wear resistant applications such as the shaft screen baffle of plate, the tup of crusher or grader.
Alloying is carried out to molten steel through common Antaciron, ferrochrome, ferro-titanium in field of steel metallurgy.If silicon Several alloys of iron, ferrochrome, ferrotianium are used in combination, and application range will be widened, and can be used for alloy when making steel and casting Agent and reducing agent, it may also be used for the microalloying hardening agent of molten steel, it may also be used for the depth deoxidier of molten steel and cast steel.However, By the meeting that is used in combination of above-mentioned alloy, there are the following problems:
1) matching problem of several alloying element contents and the comprehensive effect as alloying constituent, deoxidier and molten steel hardening agent Fruit is difficult to reach target, and makes to be used in combination and be restricted；2) ferrosilicon, ferrochrome and ferro-titanium are prepared and generally requires ratio Purer material, chromate-containing materials, titanium-containing materials, then by determining composition proportion, and carry out electric furnace reduction melting, cost compared with It is high；3) the simple substance element in ferrosilicon, ferrochrome and ferro-titanium is in molten steel microalloying strengthening process, mainly solution strengthening, Different simple substance elements Si, Cr, Ti solid solution strengthening effect are also different；Another aspect solution strengthening is compared with precipitation strength, the latter Effect is far superior to the former.And prevent ferrosilicon, ferrochrome and ferrotianium for steel V-N steel effect from fully demonstrating.
Summary of the invention
The present invention proposes that a kind of silicochromium titanium alloy, the alloy can replace ferrosilicon, ferrochrome and ferro-titanium simultaneously, solve The matching problem of alloying element content.
The technical scheme of the present invention is realized as follows:
A kind of silicochromium titanium alloy, the component including following weight percent
Si:12~35%, Cr:3~19%, Ti:8~26%, surplus Fe.
It preferably, further include C and N, the content of the C is 0.1~7.0%, and the content of the N is 4~21%.
Preferably, further include B, Nb, V and Mn, the content of the B be less than or equal to 4.7%, the content of the Nb be less than Equal to 5.0%, the content of the V is less than or equal to 6%, and the content of the Mn is less than or equal to 6.5%
It preferably, further include Ca, Mg and Al, the content of the Ca is less than or equal to 3.5%, and the content of the Mg is less than or equal to The content of 1.8%, the Al are less than or equal to 4.5%.
It preferably, further include Ca, Mg and Al, the content of the Ca is less than or equal to 3.5%, and the content of the Mg is less than or equal to The content of 1.8%, the Al are less than or equal to 4.5%.
Preferably, the silicochromium titanium 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 titanium 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 10~26% of powder weight；
3) it adds mixture in reduction sintering furnace and carries out reduction sintering and be filled with protective gas, sintering temperature into furnace It is 800~1550 DEG C, slow cooling is come out of the stove to 300 DEG C or less after 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；The reducing agent is in carbon dust, silicon powder and aluminium powder One or more, Tan Han Liang≤95% in the carbon dust, silicone content Wei≤98% in the silicon powder, the aluminium of the aluminium powder contains Liang Wei≤96%.
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 800~900 DEG C, keeps the temperature 2~3h, is continuously heating to 1150~1250 DEG C, keeps the temperature 3~4h, then heat up To 1450 DEG C~1550 DEG C, 2.5~3.5h is kept the temperature.
Beneficial effects of the present invention:
1) present invention optimizes silicochromium titanium alloy component, while replacing ferrosilicon, ferrochrome and ferro-titanium, simplifies and answers With process, the application range of silicochromium and silicon vanadium alloy is effectively widened, the matching problem of alloying element content is solved, reaches Desired effect is arrived.
2) present invention selects roasting reduction to silicochromium titanium alloy component reasonably optimizing and preparation method, not to the raw material used Purity requirement is harsher as conventional alloys again.The present invention can select or add the by-product containing Si, Cr, Ti compound Product either slag charge, makes its manufacturing cost sharp fall, and overall cost is reduced than single ferrosilicon, ferrochrome, ferro-titanium 50% or more, while new effective way is provided to the fixed-end forces in certain process of producing product, safety and environmental protection is without discarded Object 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 titanium alloy, the component including following weight percent:
Si:12~35%, Cr:3~19%, Ti:8~26%, 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 0.1~7.0%, N is 4~21%.This is because suitable C, N, make to form Si, Cr, Ti complex nitride and carbonitride in alloy, not only form nitrogen Compound and carbonitride, and form polynary complex nitride and carbonitride, and phase structure is uniform, to Si in alloy, The performance of Cr and Ti strengthening effect significantly increases.
In some preferred embodiments, we select B, Nb, V and Mn or individually add that face is added on the basis of C and N Add B, Nb, V and Mn, it is proposed that the content of B is that content less than or equal to 4.7%, Nb is that content less than or equal to 5.0%, V is less than etc. In 6%, Mn content be less than or equal to 6.5%.The reinforcing of steel mechanical performance is played containing suitable B, Nb, V, Mn in alloy Effective humidification.
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 3.5%, Mg content less than or equal to 1.8%, Al content be less than or equal to 4.5%.If silicochromium titanium alloy is as the reducing agent or deoxidier during molten steel or cast steel alloy, have in alloy suitable Ca, Mg and Al are highly beneficial, while limited content and ensure that silicochromium titanium alloy answering in other aspects in a certain range again With unaffected.
Silicochromium titanium 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.Select such bonding agent master Consider as follows: 1) nanometer materials good dispersion, bond strength are uniform.2) agglutinating property of nanometer materials during the late stages of developmet It is good, the compactness and intensity of novel alloy can be improved.3) carbon in bonding agent can be utilized completely.4) bonding agent is to alloy The subsidiary impurity of final products is seldom.
It is to adopt as Si, Cr and Ti 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 titanium alloy component 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, the either slag charge of the byproduct containing Si, Cr, Ti compound is selected or added, is made Its manufacturing cost sharp fall, overall cost reduces by 50% or more than single ferrosilicon, ferrochrome, ferro-titanium, while giving certain Fixed-end forces in a little process of producing product provide new effective way.
In some preparation embodiments, metallic silicon main component are as follows: Si >=98%, ferrosilicon main component are Si >=65%, Chrome green main component: Cr2O3>=80%, titanium oxide mainly becomes: TiO2>=85%.
In some preparation embodiments, contain silicon, chromium, the slag charge of titanium and by-product containing element compounds such as Si, Cr, Ti Product main component are as follows: SiO2: 22~35%, Cr2O3: 14~26%, TiO:30~50%, while also suitable CaO, MgO, Al2O3、B2O3、NbO、V2O5Equal substances.
Embodiment 1
A kind of silicochromium titanium alloy, the component including following weight percent:
Si:12%, Cr:3%, Ti:26%, surplus Fe.
The preparation method of silicochromium titanium 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 10% 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 900 DEG C, keeps the temperature 2h, is continuously heating to 1150 DEG C, keeps the temperature 4h, It is warming up to 1550 DEG C again, keeps the temperature 2.5h, slow cooling is come out of the stove to 300 DEG C or less after sintering.
Bonding agent is nano material modified phenolic resins；Reducing agent is carbon dust, silicon powder and aluminium powder, Tan Han Liang in carbon dust≤ 95%, silicone content Wei≤98% in silicon powder, aluminium content Wei≤96% of aluminium powder.
Embodiment 2
A kind of silicochromium titanium alloy, the component including following weight percent:
Si:21%, Cr:12%, Ti:18%, C:0.1%, N:4%, surplus Fe.
The preparation method of silicochromium titanium 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 16% 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 3h, is continuously heating to 1200 DEG C, keeps the temperature 3h, It is warming up to 1480 DEG C again, keeps the temperature 3.5h, slow cooling is come out of the stove to 300 DEG C or less after sintering.
Bonding agent is nano material modified phenolic resins；Reducing agent is carbon dust, silicon powder and aluminium powder, Tan Han Liang in carbon dust≤ 95%, silicone content Wei≤98% in silicon powder, aluminium content Wei≤96% of aluminium powder.
Embodiment 3
A kind of silicochromium titanium alloy, the component including following weight percent:
Si:30%, Cr:19%, Ti:21%, C:5%, N:13%, B:3%, Nb:5.0%, V:4%, Mn:6.5%, Ca:3.5%, Mg:1.8%, Al:1.0%, surplus Fe.
The preparation method of silicochromium titanium 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: contain silicon, chromium, the slag charge of titanium and byproduct containing element compounds such as Si, Cr, Ti Main component are as follows: SiO2: 22~35%, Cr2O3: 14~26%, TiO:30~50%, simultaneously containing CaO≤7.5%, MgO≤ 5%, Al2O3≤ 3%, B2O3≤ 10%, NbO≤9.5%, V2O5≤ 8%.
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 3% of powder weight, and the additive amount of reducing agent is the 12% 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), 850 DEG C are first warming up to, keeps the temperature 2h, then be warming up to 1200 DEG C, keeps the temperature 3h, then be warming up to 1550 DEG C, 3.5h is kept the temperature, slow cooling is come out of the stove to 300 DEG C or less after sintering.
Bonding agent is nano material modified phenolic resins；Reducing agent is carbon dust, silicon powder and aluminium powder, Tan Han Liang in carbon dust≤ 95%, silicone content Wei≤98% in silicon powder, aluminium content Wei≤96% of aluminium powder.
Embodiment 4
A kind of silicochromium titanium alloy, the component including following weight percent:
Si:35%, Cr:5%, Ti:8%, C:3%, N:21%, B:4.7%, Nb:3.2%, V:6.0%, Mn:5%, it is remaining Amount is Fe.
The preparation method of silicochromium titanium 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 26% 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 850 DEG C, keeps the temperature 2.5h, is continuously heating to 1160 DEG C, heat preservation 3h, then be warming up to 1500 DEG C keeps the temperature 3h, and slow cooling is come out of the stove to 300 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 titanium alloy, the component including following weight percent:
Si:21%, Cr:19%, Ti:13%, C:7.0%, N:17%, Ca:2.0%, Mg:1%, Al:4.5%, surplus For Fe.
The preparation method of silicochromium titanium 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 16% 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 900 DEG C, keeps the temperature 2h, is continuously heating to 1250 DEG C, heat preservation 3.5h, then be warming up to 1550 DEG C keeps the temperature 2.5h, and slow cooling is come out of the stove to 300 DEG C or less after sintering.
Bonding agent is nano material modified phenolic resins；Reducing agent is carbon dust, silicon powder and aluminium powder, Tan Han Liang in carbon dust≤ 95%, silicone content Wei≤98% in silicon powder, aluminium content Wei≤96% of aluminium powder.
Test example
Using 3 silicochromium titanium alloy of embodiment as experimental group, silicochromium+silicotitanium 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 titanium alloy, which is characterized in that the component including following weight percent:
Si:12~35%, Cr:3~19%, Ti:8~26%, surplus Fe.
2. silicochromium titanium alloy according to claim 1, which is characterized in that it further include C and N, the content of the C is 0.1~ The content of 7.0%, the N are 4~21%.
3. silicochromium titanium alloy according to claim 1 or 2, which is characterized in that further include B, Nb, V and Mn, the B's contains Amount is, less than or equal to 4.7%, the content of the Nb is less than or equal to 5.0%, and the content of the V is less than or equal to 6%, the Mn's Content is less than or equal to 6.5%.
4. silicochromium titanium 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 3.5%, and the content of the Mg is less than or equal to 1.8%, and the content of the Al is less than or equal to 4.5%.
5. silicochromium titanium 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 3.5%, the content of the Mg is less than or equal to 1.8%, and the content of the Al is less than or equal to 4.5%.
6. silicochromium titanium alloy according to claim 1, which is characterized in that the silicochromium titanium alloy is that each component is passed through to roasting Reducing process is burnt to be prepared.
7. the preparation method of the silicochromium titanium 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 10~26% of powder weight；
3) it adds mixture in reduction sintering furnace and carries out reduction sintering and be filled with protective gas into furnace, sintering temperature is 800~1550 DEG C, slow cooling is come out of the stove to 300 DEG C or less after sintering.
8. the preparation method of silicochromium titanium 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 titanium alloy according to claim 7, which is characterized in that the bonding agent is nano material Phenol-formaldehyde resin modified；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.
10. the preparation method of silicochromium titanium 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 800~900 DEG C, heat preservation 2 ~3h is continuously heating to 1150~1250 DEG C, keeps the temperature 3~4h, then be warming up to 1450 DEG C~1550 DEG C, keeps the temperature 2.5~3.5h.
CN201811615698.2A 2018-12-27 2018-12-27 Silicochromium titanium alloy and preparation method thereof Pending CN109482871A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110952030A (en) * 2019-12-24 2020-04-03 凌源钢铁股份有限公司 Multi-element nitralloy and application thereof in preparation of hot-rolled ribbed steel bars
CN113351874A (en) * 2021-04-28 2021-09-07 攀钢集团攀枝花钢铁研究院有限公司 Preparation method of vanadium-chromium-titanium powder

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CN110952030A (en) * 2019-12-24 2020-04-03 凌源钢铁股份有限公司 Multi-element nitralloy and application thereof in preparation of hot-rolled ribbed steel bars
CN110952030B (en) * 2019-12-24 2021-10-08 凌源钢铁股份有限公司 Multi-element nitralloy and application thereof in preparation of hot-rolled ribbed steel bars
CN113351874A (en) * 2021-04-28 2021-09-07 攀钢集团攀枝花钢铁研究院有限公司 Preparation method of vanadium-chromium-titanium powder
CN113351874B (en) * 2021-04-28 2022-05-17 攀钢集团攀枝花钢铁研究院有限公司 Preparation method of vanadium-chromium-titanium powder

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Application publication date: 20190319