CN108456817A - 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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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0068—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only nitrides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
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- 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
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- 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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Abstract
A kind of nitro-alloy and preparation method thereof, belongs to field of metallurgy.Nitro-alloy by mass percentage as follows at being grouped as:V18~28, Mn6~18, Si6~18, S < 0.05, P < 0.01, N10~20, inevitable impurity content are no more than 1, remaining is iron, and the sum of each ingredient is 100%.The stay in grade of nitro-alloy, and nitriding result is notable.Its production method has the advantages that low cost, high yield, meets the alloying requirement of steel-making.
Description
Technical field
The present invention relates to field of metallurgy, in particular to a kind of nitro-alloy and preparation method thereof.
Background technology
Alloy has various unique performances for simple metal, is to improve metal by Alloying Treatment therefore
One of main means of performance.Since vanadium, nitrogen multiple strengthening effect excellent in steel are found, metallurgical section skilled worker
Author has carried out series of theories and practical studies.Vanadium iron and vanadium nitrogen have become micro- conjunction that high tensile reinforcement field generally uses at present
Aurification raw material.
Studies have shown that when containing appropriate v element in steel, nitrogen pick-up can reduce V (CN) particle-vanadium carbide particle, nitridation
Vanadium particle-size, hence it is evident that increase the volume fraction of tiny V (CN) precipitated phase.Correspondingly, the increase that phase amount is precipitated can be significantly
Improve the intensity of v n micro alloying reinforcing bar.In addition, when V/N ratios reach stoichiometric, vanadium can farthest be precipitated.
In existing steel industry construction(al)steel production technology, alloy additive is mainly with having VN alloy and vanadium silicon nitrogen
Alloy.VN alloy density only has 3~4g/cm3, easily float on liquid steel level due to too light, cause vanadium and nitrogen yield low;Vanadium silicon nitrogen
Ferroalloy lacks manganese element needed for molten steel alloying again, and when alloying operation increases alloy species, laborious time-consuming.
The information for being disclosed in the background technology part is merely intended to deepen understanding of the general background technology to the present invention, and
It is not construed as recognizing or implying in any form that the information constitutes the prior art known to those skilled in the art.
Invention content
Based on the deficiencies of the prior art, the present invention provides a kind of nitro-alloys and preparation method thereof, with part or all of
Ground improves, even solves problem above.
The invention is realized in this way:
In a first aspect, the embodiment of the present invention provides a kind of nitro-alloy.
Nitro-alloy by mass percentage as follows at being grouped as:V18~28, Mn6~18, Si6~18, S < 0.05,
P < 0.01, N10~20, inevitable impurity content are no more than 1, remaining is iron, and the sum of each ingredient is 100%.
In second aspect, an embodiment of the present invention provides a kind of production methods of above-mentioned nitro-alloy.
Production method includes:Vanadium silicomangan is provided, then vanadium silicomangan is made to be connect with nitrogen in pressurization, the environment heated
It touches and carries out nitridation reaction.
Advantageous effect:
The quality that aln alloy provided in an embodiment of the present invention has had, and nitriding result is notable.Preparation method is
It is added at one time in steelmaking alloy, best performance, element high income can be obtained in each alloy element efficiency.Meanwhile it making steel
Production process is simple, and production efficiency improves, and production cost reduces, and is conducive to STEELMAKING PRODUCTION tissue.
Specific implementation mode
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
It is specifically described below for the nitro-alloy and preparation method thereof of the embodiment of the present invention:
In order to make steel have desired performance, general method is its component to be adjusted, and composition regulation is usual
It can be realized for example, by microalloying.Nitro-alloy is exactly that one kind obtaining alloy material by microalloy treatment.Usually
Ground can make its microalloy element precipitation strength and precipitation strength for the intensity for making steel have.
Nitrogen and vanadium are introduced to as the additive of microalloying in steel, it can be made preferably to be reinforced (microalloy element
Precipitation and precipitation).Typically, nitrogen and vanadium can be used by way of vanadium nitride.70% vanadium is with V in VN alloy
(CN) form is precipitated, and only 20% vanadium is solid-solution in matrix, and remaining vanadium is dissolved in Fe3C.The V/N of VN alloy is bigger, profit
Increasing the combination nitrogen in steel with Si system alloy cooperation VN alloy, the V (CN) of a large amount of small and disperseds is precipitated phase amount and obviously increases,
V (CN) amount of precipitation accounts for 78% or more of total vanadium amount, to make the reinforcing effect of V be not fully exerted.
Commerical test show Silicon vanadium nitride, ferrovanadium nitride, vanadium nitrogen, vanadium iron microalloying cost be respectively 66.60 yuan/
T, 76.80 yuan/t, 82.50 yuan/t, 144.00 yuan/t, and the mechanical property of reinforcing bar, welding performance and aging performance etc. are comprehensive surveys
Examination index is stable and has rationally more than needed.The nitrogen content of Silicon vanadium nitride is high, and the precipitation strength of vanadium in steel can be made when being used in steel
It is remarkably reinforced with refined crystalline strengthening effect, promotes and optimize the precipitation of vanadium, achieve the effect that (element silicon coordinates vanadium nitride to nitrogen pick-up drop vanadium
There are good nitrogen fixation).
III grade of reinforcing bar of HRB400 is produced mainly using the side for adding microalloy element on the basis of II grade of reinforcing bar of HRB350
Method, common micro alloying element include V, Nb, Ti etc..When with V microalloyings, using the pair rolling technique property of can be obtained by
It can qualified III grade of spiral of HRB400 stablized.V is easier to be dissolved into steel, and is easier to that microalloying member is precipitated from steel
Element.When not adding nitride, V mainly is combined to form VC with the C element in steel, and matrix and crystalline substance are present in the form of carbide
In boundary, plays the role of precipitation strength and crystal grain is inhibited to grow up.
Vfanadium compound particle can be generated because of deformation-induced precipitation during the rolling process.On the one hand austenite crystal grain length is prevented
Greatly, austenite recrystallization on the other hand can be prevented or is postponed again, austenite refined, to refine ferrite crystal grain.Addition
After ferro-silicon nitride, more N is contained in steel.After V is melted in steel, since the affinity of V and N is more than the affinity of V and C, because
This is easier to close to form VN with the N in steel, that is, firstly generates VN, then generate VC.And boron (N)-boron nitride-in steel is higher,
The V (C, N) being precipitated during rolling is more.
It does not add in nitride or the insufficient low nitrogen vanadium steel of additive amount, 56% vanadium is solid-solution in ferrite matrix, only
There is 35.5% vanadium to form V (C, N), a large amount of micro alloying element does not play precipitation strength and crystal grain is inhibited to grow up in steel
It acts on, the waste of V is larger in steel.The high nitrogen vanadium steel of the compounds such as ferro-silicon nitride is added then on the contrary, shape is precipitated in 70% or more vanadium
At V (C, N), only 20% vanadium is fused in matrix admittedly, to enhance the precipitation strength of vanadium and the effect of crystal grain thinning.In steel
Nitrogen pick-up also reduces V (C, N) particle size, increases the quantity of V (C, N) precipitated phase, to make the intensity of the reinforcing bar containing V obviously rise
It is high.
VN alloy is a kind of novel alloy additive, can substitute life of the vanadium iron for micro alloyed steel and construction(al)steel
Production.Vanadium nitride makes an addition in steel the comprehensive mechanical performances such as the intensity, toughness, ductility and thermal fatigue resistance that can improve steel, and makes
Steel has good solderability.The reason is that, in VN alloy steel, the V (C, N) being precipitated in austenite in phase transition process,
It can be used as ferritic forming core core, the formation of induction Intragranular Acicular Ferrite (IGF) that ferritic nucleation rate can be improved in micro- conjunction
In the production of aurification steel, the performance inconsistency of steel is reduced, there is more effective precipitation strength and grain refining effect and saving than vanadium iron
The advantages of 20%~40% vanadium, allows you originally to reduce production vehicle.
It pretends as a kind of most economical effective additive of Aldecor, VN alloy, which has, positive applies valence
Value.
Domestic most typical success use-case is the strip product that III grade of reinforcing bar of HRB400MPa is representative.In recent years, vanadium nitrogen
Alloying process is also applied in producing non-modulation steel high-strength thick H profile steel, GSP products and tool steel research.
In view of this, providing a kind of nitro-alloy in embodiments of the present invention.It is a kind of vanadium silicomanganese nitrogen ferroalloy, is led to
Vanadium silicomangan is crossed to nitrogenize.Nitro-alloy by mass percentage as follows at being grouped as:V18~28, Mn6~18, Si6
~18, S < 0.05, P < 0.01, N10~20, inevitable impurity content are no more than 1, remaining is iron, and the sum of each ingredient is
100%.
In some alternative examples, nitro-alloy by mass percentage as follows at being grouped as:V19~26, Mn8~
16, Si8~16, S < 0.03, P < 0.008, N12~18, inevitable impurity content are no more than 1, remaining is iron.
Alternatively, V20~24, Mn10~14, Si9~15, S < 0.01, P < 0.009, N15~17, inevitable impurity
Content is no more than 0.5, remaining is iron.Alternatively, V21~25, Mn7~13, Si8~14, S < 0.006, P < 0.005, N13~
16, inevitable impurity content is no more than 0.3, remaining is iron.
Alternatively, V22~26, Mn15~18, Si12~17, S < 0.003, P < 0.001, N12~15 are inevitably miscellaneous
Matter content is no more than 0.05, remaining is iron.
According to the difference of the component of nitro-alloy and the technique of its final molding, density can be suitably adapted, greatly
For on body, the density of nitro-alloy is 4~6g/cm3.In the example that some have adjusted component, the density of nitro-alloy
Can be 4~5g/cm3Or 5~6g/cm3。
Obtained nitro-alloy can be made as various proper shapes and size according to the demand of its specific finished product,
Such as in one example, nitro-alloy is formed as cylindrical alloy bar.A diameter of 10~20mm, highly be 20~
40mm。
The embodiment of the present invention puies forward the production method for pointedly proposing nitro-alloy, is different from existing alloy nitride
The production method of reason, in the present embodiment, the production method of nitro-alloy includes:Vanadium silicomangan is provided, then vanadium silicomanganese is made to close
Gold contacts with nitrogen in pressurization, the environment heated and carries out nitridation reaction.
In the present embodiment, the production method of nitro-alloy is mainly by using determining at the vanadium silicomangan conduct being grouped as
Matrix alloy, then it is made to carry out nitridation reaction with nitrogen, to obtain the nitro-alloy with desired composition.
The various components of the nitro-alloy of final products are mixed in the form of simple substance or compound in the prior art, then
It is reacted with nitrogen.
And in the embodiment of the present invention, it is (each with target nitro-alloy using the precursor alloy to be nitrogenized prepared
The non-nitrogen of kind, or also have some inevitable impurity), carry out nitridation reaction with nitrogen.By keeping alloy anti-with nitrogen
It answers, makes that alloy is introduced into nitrogen and vanadium therein, manganese, silicon are precipitated as microalloy element or precipitation, so as to adjust the group of alloy
At and so that it is strengthened.
When steelmaking alloy, various elements are added at one time with alloy existence form, and each alloy element efficiency can obtain
It is played to best, element high income.
In a kind of example, the aforementioned alloy (vanadium silicomangan) for needing to be nitrogenized by mass percentage at be grouped as
Under:V20~30, Mn7~20, Si7~20, S < 0.05, P < 0.01, impurity content be no more than 1, remaining is iron, respectively at point it
Be 100%.
Alternatively, V21~29, Mn8~19, Si9~18, S < 0.03, P < 0.008, inevitable impurity content does not surpass
0.5 is crossed, remaining is iron;Alternatively, V23~26, Mn10~16, Si11~16, S < 0.006, P < 0.005, inevitably miscellaneous
Matter content is no more than 0.3, remaining is iron;
Alternatively, V25~28, Mn15~17, Si12~15, S < 0.001, P < 0.002, inevitable impurity content is not
More than 0.06, remaining is iron.
It is adapted with the vanadium silicomangan of aforementioned component, it is 0.85~1.35MPa conditions that nitridation reaction, which is in nitrogen,
Lower progress, and nitridation reaction reacts in the environment of high temperature, high pressure.
In some optional examples, vanadium silicomangan is provided in the form of powder, and be placed in one it is closed resistance to
High temperature, high pressure container in.When smelting, make the high-pressure atmosphere that rich nitrogen is heated and formed by injecting nitrogen in container.In this way,
With nitrogen nitridation reaction occurs for vanadium silicomangan.
Normally, nitrogen treatment carries out under conditions of constant temperature, and reaction temperature is preferably 1250~1350 DEG C.Reaction pressure
Power and reaction time can be adjusted by waiting for the dosage of nitro-alloy.Usually, 1250~1350 DEG C, 0.8~
1.3MPa isothermal reactions 3~6 hours are more appropriate.
It should be pointed out that used vanadium silicomangan is preferably handled by powdered when in use, it is clear that it has more
Big surface area, it is easier to which nitrogen combines and reaction, and is also easier to subsequently carry out shaping operation.
For example, grain size is preferably 100~300 mesh, it is highly preferred that grain size is 120~180 mesh, it is further preferred that grain size
For 140~170 mesh, most preferably, grain size is 150~160 mesh.
In order to obtain the nitro-alloy of sizing, it is convenient for secondary operation or deep processing, vanadium silicomangan is in nitridation reaction
After the completion, it is also cooled down, is preferably cooled to room temperature.Further, after being cooled to room temperature, rolling, upsetting pull, roller can be passed through again
The operations such as pressure obtain desired shape, such as cylinder nitro-alloy stick above-mentioned.
The nitro-alloy and preparation method thereof of the present invention is described in further detail with reference to embodiments.
Embodiment 1
First, vanadium silicomangan is produced.Alloying component (wt%):V20, Mn7, Si7, S are less than 0.05, P and are less than 0.01,
Impurity content is no more than 1, remaining is iron.
Then, vanadium silicomangan is crushed to 100 mesh, and alloy powder is packed into 1m3In high temperature and high pressure containers.Container is used
The outer heat supply of electricity, temperature control within the scope of 1250 DEG C, pressure 0.8MPa.Be passed through nitrogen (air pressure 0.85MPa), constant temperature 6 hours into
Row nitridation.After nitridation, power-off, pressure release, and vanadium nitride silicomangan is cooled down.Diameter is pressed into after being cooled to room temperature
The cylinder alloy material of 10mm, long 20mm.And it is for sale to fill jumbo bag warehousing.
The vanadium silicomanganese nitrogen ferroalloy finished product ingredient (wt%) produced:V18, Mn6, Si6, S are less than 0.05, P and are less than 0.01,
N20, impurity content are no more than 1, remaining is iron.Alloy density is 4g/cm3。
Embodiment 2
First, vanadium silicomangan is produced.Alloying component (wt%):V25, Mn14, Si14, S are less than less than 0.05, P
0.01, impurity content is no more than 1, remaining is iron.
Then, vanadium silicomangan is crushed to 200 mesh, and alloy powder is packed into 2m3In high temperature and high pressure containers.Container is used
The outer heat supply of electricity, temperature control within the scope of 1300 DEG C, pressure 1.1MPa.It is passed through nitrogen (air pressure 1.15MPa), constant temperature 3~6 hours
It is nitrogenized.
After nitridation, power-off, pressure release, and vanadium nitride silicomangan is cooled down.Diameter is pressed into after being cooled to room temperature
The cylinder alloy material of 15mm, long 30mm.And it is for sale to fill jumbo bag warehousing.
The vanadium silicomanganese nitrogen ferroalloy finished product ingredient (wt%) produced:V24, Mn15, Si15, S are less than less than 0.05, P
0.01, N15, impurity content is no more than 1, remaining is iron.Alloy density is 5g/cm3。
Embodiment 3
First, vanadium silicomangan is produced.Alloying component (wt%):V30, Mn20, Si20, S are less than less than 0.05, P
0.01, impurity content is no more than 1, remaining is iron.
Then, vanadium silicomangan is crushed to 300 mesh, and alloy powder is packed into 3m3In high temperature and high pressure containers.Container is used
The outer heat supply of electricity, temperature control within the scope of 1350 DEG C, pressure 1.3MPa.Be passed through nitrogen (air pressure 1.35MPa), constant temperature 3 hours into
Row nitridation.After nitridation, power-off, pressure release, and vanadium nitride silicomangan is cooled down.Diameter is pressed into after being cooled to room temperature
The cylinder alloy material of 20mm, long 40mm.And it is for sale to fill jumbo bag warehousing.
Vanadium silicomanganese nitrogen ferroalloy ingredient (wt%):V28, Mn18, Si18, S are less than 0.05, P and are less than 0.01, N10, and impurity contains
Amount is no more than 1, remaining is iron.Alloy density is 6g/cm3。
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of nitro-alloy, which is characterized in that the nitro-alloy by mass percentage as follows at being grouped as:V18~
28, Mn6~18, Si6~18, S < 0.05, P < 0.01, N10~20, inevitable impurity content are no more than 1, remaining is
Iron, the sum of each ingredient are 100%.
2. nitro-alloy according to claim 1, which is characterized in that the ingredient of the nitro-alloy by mass percentage
Composition is as follows:V19~26, Mn8~16, Si8~16, S < 0.03, P < 0.008, N12~18, inevitable impurity content
No more than 1, remaining is iron;
Preferably, V20~24, Mn10~14, Si9~15, S < 0.01, P < 0.009, N15~17, inevitable impurity contain
Amount is no more than 0.5, remaining is iron;
More preferably, V21~25, Mn7~13, Si8~14, S < 0.006, P < 0.005, N13~16, inevitable impurity
Content is no more than 0.3, remaining is iron;
Further preferably, V22~26, Mn15~18, Si12~17, S < 0.003, P < 0.001, N12~15, unavoidably
Impurity content be no more than 0.05, remaining is iron.
3. nitro-alloy according to claim 1 or 2, which is characterized in that the density of the nitro-alloy is 4~6g/cm3,
Preferably 4~5g/cm3, more preferably 5~6g/cm3。
4. nitro-alloy according to claim 1, which is characterized in that the nitro-alloy is the alloy bar of cylinder, excellent
A diameter of 10~20mm of the alloy bar, selection of land is highly 20~40mm.
5. a kind of production method of nitro-alloy as described in any one of Claims 1 to 4, which is characterized in that the system
Include as method:Vanadium silicomangan is provided, then so that the vanadium silicomangan is contacted with nitrogen in pressurization, the environment heated and goes forward side by side
Row nitridation reaction.
6. the production method of nitro-alloy according to claim 5, which is characterized in that the vanadium silicomangan presses quality hundred
Score meter it is as follows at being grouped as:V20~30, Mn7~20, Si7~20, S < 0.05, P < 0.01, impurity content are no more than 1,
Remaining is iron, and the sum of each ingredient is 100%;
Preferably, V21~29, Mn8~19, Si9~18, S < 0.03, P < 0.008, inevitable impurity content is no more than
0.5, remaining is iron;
More preferably, V23~26, Mn10~16, Si11~16, S < 0.006, P < 0.005, inevitable impurity content is not
More than 0.3, remaining is iron;
Further preferably, V25~28, Mn15~17, Si12~15, S < 0.001, P < 0.002, inevitable impurity contains
Amount is no more than 0.06, remaining is iron.
7. the production method of nitro-alloy according to claim 5, which is characterized in that the vanadium silicomangan is with powder
Form be provided, grain size is preferably 100~300 mesh, it is highly preferred that grain size is 120~180 mesh, it is further preferred that grain
Diameter is 140~170 mesh, and most preferably, grain size is 150~160 mesh.
8. the production method of nitro-alloy according to claim 5, which is characterized in that the environment for pressurizeing, heating
Condition is:1250~1350 DEG C of temperature, 0.8~1.3MPa of pressure.
9. the production method of nitro-alloy according to claim 8, which is characterized in that the nitrogen be with 0.85~
The air pressure of 1.35MPa is input in the environment of the pressurization, heating, and nitrogen treatment has carried out 3~6 under conditions of constant temperature
Hour.
10. the production method of nitro-alloy according to claim 5, which is characterized in that after the completion of the nitridation reaction,
It is also cooled down, is preferably cooled to room temperature.
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