CN103924035B - Titanium aluminium core cabling wire and application thereof and Ti Alloying molten steel and preparation method thereof and a kind of titaniferous steel alloy - Google Patents
Titanium aluminium core cabling wire and application thereof and Ti Alloying molten steel and preparation method thereof and a kind of titaniferous steel alloy Download PDFInfo
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Abstract
The invention provides a kind of titanium aluminium core cabling wire, this core-spun yarn comprises: the aluminium skin of sandwich layer and the described sandwich layer of parcel, described sandwich layer is titanium-iron powder. The invention provides titanium aluminium core cabling wire of the present invention in the application of preparing in Ti Alloying molten steel. The preparation method who the invention provides a kind of Ti Alloying molten steel, the method comprises: titanium aluminium core cabling wire of the present invention feeding is treated to carry out in titanium alloyed molten steel Ti Alloying. The invention provides the Ti Alloying molten steel that method of the present invention obtains. The invention provides a kind of titaniferous steel alloy, this titaniferous steel alloy is formed by Ti Alloying molten steel casting of the present invention. In the preferred embodiment of the present invention, core-spun yarn of the present invention is used for realizing molten steel Ti Alloying, and the rate of recovery of titanium is high and stable, substantially maintains between 80%-85%, has effectively improved steel quality.
Description
Technical field
The present invention relates to a kind of titanium aluminium core cabling wire and the application in molten steel Ti Alloying thereof, and a kind of titaniumAlloying molten steel and preparation method thereof, and a kind of titaniferous steel alloy.
Background technology
For ensureing various physics, the chemical property of steel, need in steel, add alloy addition that its composition is adjustedThe whole operation to prescribed limit. Element that do not have in ordinary steel or that content is less (C, Si, Mn,S or P) all belong to alloying element. Alloy addition can be both pure material (nickel, copper, aluminium, stoneInk powder etc.), can be also ferroalloy (ferromanganese, ferrosilicon, vanadium iron, ferrotianium etc.), also alloying elementCompound (oxide, carbide, nitride etc.).
The affinity of the elements such as Ni, Mo, Cu, Co and oxygen is low, can add or smelt with furnace chargeIn process, add; And Ti, V, Cr, Si, Mn, Al etc. are strong with the affinity of oxygen, are before coming out of the stove(or in ladle) has been added to fully in the molten steel of deoxidation. Can the large ferroalloy of addition in stove, itsLumpiness is easily passed slag blanket compared with great talent. In ladle, add fashionablely, it is few that ferroalloy reacts with slag, and the rate of recovery is higher,The granular iron alloy that the most handy process is broken. Ferromanganese that consumption is large, ferrosilicon, ferrochrome, nickel etc., with bulkAdd molten steel network minimal, conventionally can adopt and simply add method.
Titanium can improve the high temperature quenching degree of steel, and the effect that forms carbide tendency, crystal grain thinning is large, energyImprove intensity, hardness and ductility, join in stainless steel and can improve corrosion resistance. At present, STEELMAKING PRODUCTIONIn the time of Ti Alloying, all adopt ferro-titanium piece to add after deoxidation of molten steel completes, yield of alloy is low. CauseThis, the Ti Alloying core-spun yarn that exploitation is applicable to steel-making has very important effect.
Chinese patent application 201010545935.X discloses a kind of bismuth core-spun yarn, and this core-spun yarn is by steel bandCrust and core powder composition, diameter is the core-spun yarn of Φ 8～Φ 20 or other size diameter or other profile,The alloying component of core powder comprises Ca, Si, S, Fe, Bi, and wherein, the weight percent content of Ca is0-20%, the weight percent content of Si is 0-15%, the weight percent content of S is 0-10%, FeWeight percent content be 0-20%, the weight percent content of Bi is 50-100%.
Chinese patent application 200510019893.5 discloses aluminium-rare-earth core-spun yarn, and this core-spun yarn adopts and containsThe improvement of rare earth metal the aluminium-rare-earth heart yearn of intensity, contain the rare earth that mass percent is 0.001-3%Metal.
Chinese patent application 201120149390.0 discloses core-spun yarn, and this core-spun yarn comprises by vanadium nitride and closingThe sandwich layer that gold is made and be wrapped in outside exodermis, complies with between described sandwich layer and exodermis from inside to outsideInferior mesh-supported layer and the fluorite layer of being enclosed with.
Chinese patent application 201120507605.1 discloses core-spun yarn, and this core-spun yarn comprises sandwich layer and bagBe rolled in the sheetmetal layer of described sandwich layer outside, described sandwich layer is titanium silicon layer. In addition described titanium silicon,Between layer and sheetmetal layer, be enclosed with successively from inside to outside mesh-supported layer and alloy of vanadium nitride layer. By line feedingCore-spun yarn is fed molten steel depths by machine, can effectively improve the rate of recovery of titanium, can make the stable control of the rate of recovery of titaniumBuilt in more than 75%, also can carry out the alloying of vanadium to molten steel simultaneously.
Chinese patent application 201120090988.7 discloses core-spun yarn, comprises crust and core material, and core material is tightClosely be filled in outer intracutaneous, crust comprises the metal level of outer field steel disc layer and internal layer, and crust both sides are at crustInterface inwardly turns down, and extruding is fixing, and described metal level fusing point is less than steel, and described metal layer thickness is0.2mm, described steel disc layer thickness is 0.2mm.
Chinese patent application 201220604949.9 discloses high magnesium core-spun yarn, and heart yearn body is by cylindrical shape bagHeart yearn shell and the pure magnesium grain and the associated alloys powder that are filled in this core-spun yarn shell form, wherein, and instituteState core-spun yarn shell by the mild steel roll coil of strip and form, its wire diameter is 12mm-12.5mm, described mild steelThe thickness of band is 0.8-1mm.
Chinese patent application 201120163155.9 discloses cored wire of boron-iron alloy, and core is ferro-boron powder,Described jacket thickness is 0.2-0.8mm, and ferro-boron grain weight amount accounts for the 30%-60% of core-spun yarn gross weight.
Chinese patent application 200910273016.9 discloses micro-alloying compound cored wire for high-strength steel,Inner core composition is: Ca23%-28%, and Si51%-55%, Mg0.65%-1.5%, Ba1.3%-2.5%,Re0.6%-1.0%，B0.6%-1.2%，Zr1.6%-3.5%，Ti1.3%-2.8%，Nb0.6%-1.2%Surplus is iron and inevitable impurity.
Chinese patent application 200610023557.2 discloses low-nitrogen ferrotitanium and manufacture method and core-spun yarn,Described low-nitrogen ferrotitanium is 70Fe-Ti alloy, contains the impurity elements such as nitrogen, aluminium, silicon, carbon, phosphorus, sulphur,Described nitrogen, aluminium content is respectively≤0.15% and < 3%. Described titanium, iron, silicon, carbon, phosphorus, sulphur aluminium contentBe respectively: titanium 60-80%, silicon≤0.5%, carbon≤0.1%, phosphorus≤0.04%, and sulphur≤0.03%, surplus isIron.
Chinese patent application 201120506301.3 discloses a kind of low-nitrogen ferrotitanium core-spun yarn, and core material is brokenTo the low-nitrogen ferrotitanium powder that is less than 2mm, low-nitrogen ferrotitanium line material directly enters crowded after heating by diathermic furnacePress, continuously extruded one-tenth solid wire material, becomes core-spun yarn by the direct winding of core cabling wire machine and steel band, guaranteesLow-nitrogen ferrotitanium line material and air are short time of contact, make that line material is not oxidized, not efflorescence.
Chinese patent application 200810249804.X disclose a kind of ferro-boron and ferrotianium composite core-spun yarn andIts application, the powder of composite core-spun yarn is ferro-boron and ferrotianium, the boron content of described ferro-boron is not less than 9wt%,The titaniferous amount of ferrotianium is not less than 25wt%, and the mixed proportion of ferro-boron and ferrotianium is determined as required. Adopt boronThe composite core-spun yarn of iron and ferrotianium feeds in molten steel ferrotianium and ferro-boron simultaneously, simplifies closing of smelting boron steelThe control of boron content in aurification operation and stabilized steel.
As can be seen here, the core material of the core-spun yarn of prior art research is mainly the elements such as calcium, niobium, vanadium, boron,And it is very few to the research of the core-spun yarn that contains titanium.
Summary of the invention
The object of the present invention is to provide one can be used in and produce titaniferous steel alloy, and the rate of recovery of titanium is highAnd stable titanium aluminium core cabling wire.
Molten steel alloying should be accomplished low consumption, high efficiency, high-quality. Therefore, most suitable alloy addsWhen agent is selected, should consider the height of different additive totle drilling cost, also will consider that its purity or impurity element containAmount. Conventionally, at a low price in ferroalloy, impurity content is higher, and most of impurity element all will increase and meltThe consumption of agent and cleanser, and quantity of slag increase, yield reducation, energy consumption are strengthened. Therefore, select alloyWhen additive, also need to consider steelmaking process material balance and energy balance, consider the fusion range of additive,And the rate of dissolution of prior additive. For example, though the fusing point of titanium more than 1700 DEG C, titaniumNot reach fusion temperature to be just dissolvable in water in steel. The chemical composition of additive and structure, in steel-making temperatureUnder thermal capacity and capacity of heat transmission and additive add fashionable physical state and lumpiness etc. all to dissolvingSpeed exerts an influence. Density, the mode that adds of additive also have important to stabilizing and increasing of the rate of recoveryMeaning.
Amid all these factors analyze and consider, the application's applicant tests through long-term groping and is theoreticalDerive and find, in the time carrying out alloying in the face of the core-spun yarn that need to use titaniferous, using aluminium skin as crust energyThe rate of recovery of the titanium while enough improving core-spun yarn for alloying.
For realizing aforementioned object, according to a first aspect of the invention, the invention provides a kind of titanium aluminium coredLine, this core-spun yarn comprises: the aluminium skin of sandwich layer and the described sandwich layer of parcel, described sandwich layer is titanium-iron powder.
According to a second aspect of the invention, the invention provides titanium aluminium core cabling wire of the present invention in preparationApplication in Ti Alloying molten steel.
According to a third aspect of the invention we, the invention provides a kind of preparation method of Ti Alloying molten steel,The method comprises: titanium aluminium core cabling wire feeding of the present invention is treated in titanium alloyed molten steel, carrying out titanium closesAurification.
According to a forth aspect of the invention, the invention provides the titanium alloy that method of the present invention obtainsChange molten steel.
According to a fifth aspect of the invention, the invention provides a kind of titaniferous steel alloy, wherein, this titaniferousSteel alloy is formed by Ti Alloying molten steel casting of the present invention.
In the preferred embodiment of the present invention, core-spun yarn of the present invention is used for realizing molten steel Ti Alloying,The rate of recovery of titanium is high and stable, substantially maintains between 80%-85%, has effectively improved steel quality. AndAdopt core-spun yarn of the present invention to carry out obtaining after Ti Alloying molten steel casting that molten steel Ti Alloying obtainsTitanium alloy steel yield strength and tensile strength are high.
Other features and advantages of the present invention are described in detail the detailed description of the invention part subsequently.
Detailed description of the invention
Below the specific embodiment of the present invention is elaborated. Should be understood that, retouch in this placeThe detailed description of the invention of stating only, for description and interpretation the present invention, is not limited to the present invention.
The invention provides a kind of titanium aluminium core cabling wire, wherein, this core-spun yarn comprises: described in sandwich layer and parcelThe aluminium skin of sandwich layer, described sandwich layer is titanium-iron powder.
Adopt aforementioned core-spun yarn to carry out molten steel Ti Alloying, titanium recovery rate is high and stable, and the titanium obtainingThe titanium alloy steel yield strength and the tensile strength that after alloying molten steel casting, obtain are high.
According to core-spun yarn of the present invention, the weight ratio of preferred described titanium-iron powder and aluminium skin is 5-10:1. AdoptAforementioned core-spun yarn carries out molten steel Ti Alloying, and titanium recovery rate is high and stable, and the Ti Alloying steel obtainingThe titanium alloy steel yield strength and the tensile strength that after water casting, obtain are high.
According to core-spun yarn of the present invention, Ti content > 25 % by weight in preferred described titanium-iron powder, C content< 5 % by weight, S content < 0.05 % by weight, surplus is Fe, more preferably in described titanium-iron powder, contains 40-85The Ti of % by weight, preferably contains the Ti of 50-70 % by weight, the C of < 5 % by weight, < 0.05 % by weightS, surplus is Fe. Adopt aforementioned core-spun yarn to carry out molten steel Ti Alloying, titanium recovery rate is high and stable, andAnd the titanium alloy steel yield strength and the tensile strength that after the Ti Alloying molten steel casting obtaining, obtain are high.
According to core-spun yarn of the present invention, preferably Al content > 90 % by weight in aluminium skin. Adopt aforementioned bagHeart yearn carries out molten steel Ti Alloying, and titanium recovery rate is high and stable, and the Ti Alloying molten steel casting obtainingAfter the titanium alloy steel yield strength and the tensile strength that obtain high.
According to core-spun yarn of the present invention, the preferably granularity≤1.5mm of titanium-iron powder. Adopt aforementioned core-spun yarn to enterRow molten steel Ti Alloying, titanium recovery rate is high and stable, and obtains after the Ti Alloying molten steel casting obtainingTitanium alloy steel yield strength and tensile strength high.
According to the preferred embodiment of the present invention, described titanium-iron powder is the titanium-iron powder (grain of trade mark FeTi70Degree≤1.5mm, the Ti that contains 67 % by weight, the C of < 0.5 % by weight, the S of < 0.05 % by weight, more thanAmount is Fe), titanium-iron powder (granularity≤1.5mm, the Ti that contains 58 % by weight, the < of trade mark FeTi60The C of 0.5 % by weight, the S of < 0.05 % by weight, surplus is Fe), the titanium-iron powder (grain of trade mark FeTi55Degree≤1.5mm, the Ti that contains 55 % by weight, the C of < 0.4 % by weight, the S of < 0.05 % by weight, more thanAmount is Fe).
According to one of the present invention preferred embodiment, described aluminium skin is the aluminium (Al by trade mark 1050AContent is 98.5 % by weight, and surplus is Si < 0.25 % by weight, Fe < 0.45 % by weight etc.) make.
According to core-spun yarn of the present invention, the thickness of preferred described aluminium skin is 0.8-1.5mm. Adopt aforementioned bagHeart yearn carries out molten steel Ti Alloying, and titanium recovery rate is high and stable, and the Ti Alloying molten steel casting obtainingAfter the titanium alloy steel yield strength and the tensile strength that obtain high.
According to core-spun yarn of the present invention, the diameter of preferred described core-spun yarn is 12-20mm. Adopt aforementioned bagHeart yearn carries out molten steel Ti Alloying, and titanium recovery rate is high and stable, and the Ti Alloying molten steel casting obtainingAfter the titanium alloy steel yield strength and the tensile strength that obtain high.
The core-spun yarn with aforementioned component of the present invention all can be realized object of the present invention, and its preparation method canSelect for the routine of this area, the present invention is not described in detail at this.
The invention provides titanium aluminium core cabling wire of the present invention in the application of preparing in Ti Alloying molten steel.
The preparation method who the invention provides a kind of Ti Alloying molten steel, the method comprises: by institute of the present inventionThe titanium aluminium core cabling wire feeding of stating treats to carry out in titanium alloyed molten steel Ti Alloying.
Preparation in accordance with the present invention, treats that titanium alloyed molten steel is for carbon silicomangan described in preferablyChange molten steel, and described in treat that the temperature of titanium alloyed molten steel is 1550-1600 DEG C.
Preparation in accordance with the present invention, feeds in molten steel fast in order to be conducive to core-spun yarn, simultaneously forImprove yield strength and the tensile strength of titanium alloy steel, preferably under dynamic condition, carry out Ti Alloying, movingState condition can be by rocking ladle or rotating and realize, for example can be at core-spun yarn by line feedingIn molten steel in device feeding ladle time, ladle is rocked.
Preparation in accordance with the present invention, wherein, carrying out in Ti Alloying process, preferably by coredWhen line feeds in the molten steel in ladle by Yarn feeding device, to the contact area spray of core-spun yarn and molten steelBlown inert gas.
In the present invention, inert gas can be that the routine of this area is selected, for example, can be argon gas.
Preparation in accordance with the present invention, by core-spun yarn and molten steel contact area winding-up inert gas,The mobility of the slag in this region can be improved on the one hand, this region slag in addition can be prevented on the other handFlow and collect towards this region, can improve yield strength and the tensile strength of titanium alloy steel simultaneously, especially existLadle is rocked in process, and the slag in other region is likely towards core-spun yarn Flow Structure Nearby, by coredNear line, winding-up inert gas, can effectively ensure the quick feeding of core-spun yarn.
Preparation in accordance with the present invention, wherein, preferably the speed of core-spun yarn feeding is 3-10 meter per second.
The invention provides the Ti Alloying molten steel that method of the present invention obtains.
The invention provides a kind of titaniferous steel alloy, wherein, this titaniferous steel alloy is by titanium of the present inventionAlloying molten steel casting forms.
Below in conjunction with detailed description of the invention, the present invention is further described, but can not therefore limit the present inventionScope.
In the present invention, Ti content adopts chromotropic acid photometry to record.
Titanium recovery rate is by measuring the forward and backward Ti content of molten steel feeding core-spun yarn, then in conjunction with core-spun yarn instituteTotal titanium amount of bringing into, by calculating, is specially: titanium recovery rate=(after molten steel feeding core-spun yarnTi content before Ti content-molten steel feeding core-spun yarn) × tap/core-spun yarn total titanium amount of bringing into.
In the present invention, tensile property is according to GB/T228(metal material tensile testing at ambient temperature) carry out,Detect respectively yield strength ReL, tensile strength Rm.
In the present invention, the powder of target particles granularity can will sieve by standard screen after crushing materialArrive.
Embodiment 1
A kind of core-spun yarn A1(external diameter is 12mm), comprise sandwich layer and the aluminium skin that wraps up sandwich layer, described coreLayer is titanium-iron powder (trade mark FeTi70, granularity≤1.5mm, the Ti that contains 67 % by weight, < 0.5 weightThe C of %, the S of < 0.05 % by weight, surplus is Fe), aluminium skin is that (Al content is by the aluminium of 1050A98.5 % by weight, surplus is Si < 0.25 % by weight, Fe < 0.45 % by weight etc.) make (thick 0.8mm),The weight ratio of described titanium-iron powder and aluminium skin is 5:1.
Embodiment 2
A kind of core-spun yarn A2(external diameter is 12mm), comprise sandwich layer and the aluminium skin that wraps up sandwich layer, described coreLayer is titanium-iron powder (trade mark FeTi60, granularity≤1.5mm, the Ti that contains 58 % by weight, < 0.5 weightThe C of %, the S of < 0.05 % by weight, surplus is Fe), by the aluminium of 1050A, (Al content is 98.5 to aluminium skin% by weight, surplus is Si < 0.25 % by weight, Fe < 0.45 % by weight etc.) make (thick 1mm), described inThe weight ratio of titanium-iron powder and aluminium skin is 8:1.
Embodiment 3
A kind of core-spun yarn A3(external diameter is 12mm), comprise sandwich layer and the aluminium skin that wraps up sandwich layer, described coreLayer is titanium-iron powder (trade mark FeTi55, granularity≤1.5mm, the Ti that contains 55 % by weight, < 0.4 weightThe C of %, the S of < 0.05 % by weight, surplus is Fe), by the aluminium of 1050A, (Al content is 98.5 to aluminium skin% by weight, surplus is Si < 0.25 % by weight, Fe < 0.45 % by weight etc.) make (thick 1.5mm), described inThe weight ratio of titanium-iron powder and aluminium powder is 10:1.
Embodiment 4
Identical with the core-spun yarn of embodiment 1, different, the weight ratio of titanium-iron powder and aluminium skin is 13:1.
Embodiment 5
Identical with the core-spun yarn of embodiment 1, different, the thickness of aluminium skin is 2mm.
Embodiment 6
Identical with the core-spun yarn of embodiment 1, different, aluminium skin is by the aluminium (aluminium (Al of the trade mark 1100Content is 98 % by weight, and surplus is Si < 0.3 % by weight, Fe < 0.5 % by weight etc.) make.
Embodiment 7
Identical with the core-spun yarn of embodiment 1, different, titanium-iron powder be (trade mark FeTi35, granularity≤2.5mm, the Ti that contains 33 % by weight, the C of < 0.5 % by weight, the S of < 0.05 % by weight, surplus isFe）。
Comparative example 1
Identical with the core-spun yarn of embodiment 1, different, the sheetmetal of the weight such as aluminium Pi You and equal thickness is (coldRolling band steel (trade mark St12) makes) replace.
Preparation example
Ton LF stove refining furnace+6 machine 6 flows square billet even 120 tons of converter+120 to adopt core-spun yarn A1-A7On casting machine, produce C content 0.15-0.20 % by weight, Mn content 0.30-0.50 % by weight, Si content0.15-0.35 % by weight, Ti content 0.04-0.06 % by weight, phosphorus content is not more than 0.025 % by weight, sulphurContent is not more than the Q345B steel of 0.015 % by weight, specifically carries out as follows:
First in converter, add 140 tons of molten iron, utilize the function of the de-C of Converter Oxigen Blowing, molten iron is just refinedBecome molten steel, the C in molten steel taps in ladle when just refining is to 0.06 % by weight, and now actual tap is133 tons (in the first refining process of converter, the raw material of approximately 5 % by weight is burnt). In tapping process, in molten steel, addEnter that FeSi, FeMn alloy and anthracite carry out Si, Mn and C is element alloyed, molten steel after alloyingMiddle C content is 0.16 % by weight, and Mn content is 0.45 % by weight, and Si content is 0.30 % by weight, PContent is 0.015 % by weight, and S content is 0.010 % by weight, now in molten steel, samples the examination of taking-upTi content in the cooling rear mensuration steel of sample is 0.001 % by weight.
Molten steel starts electrical heating after arriving LF stove, stops heating in the time that liquid steel temperature is heated to 1575 DEG C,Feed core-spun yarn by feeding wire machine and also rock ladle simultaneously, simultaneously the contact area winding-up to core-spun yarn and molten steelInert gas (inert gas is argon gas), to prepare the Ti Alloying molten steel of required Ti content, this processTitanium recovery rate (the results are shown in Table 1); Then flow on billet caster Ti Alloying molten steel is watered at 6 machines 6Cast 180mm × 1530mm strand, after rolling, become a useful person for thick for 16mm, wide 2000mmFinished steel plate, its Ti content is 0.05 % by weight, yield strength and tensile strength are in table 1.
Preparation comparative example 1
Method according to preparation example is prepared finished steel, different, uses core-spun yarn D1 to be prepared phaseWith the steel of Ti content.
Preparation comparative example 2
Ton LF stove refining furnace+6 machine 6 flows billet caster 120 tons of converter+120 to adopt core-spun yarn D1Upper production C content 0.15-0.20 % by weight, Mn content 0.30-0.50 % by weight, Si content 0.15-0.35% by weight, Ti content 0.04-0.06 % by weight, phosphorus content is not more than 0.025 % by weight, and sulfur content is littleIn the Q345B of 0.015 % by weight steel, specifically carry out as follows:
First in converter, add 140 tons of molten iron, utilize the function of the de-C of Converter Oxigen Blowing, molten iron is just refinedBecome molten steel, the C in molten steel taps in ladle when just refining is to 0.06 % by weight, and now actual tap is133 tons (in the first refining process of converter, the raw material of approximately 5 % by weight is burnt). In tapping process, in molten steel, addEnter that FeSi, FeMn alloy and anthracite carry out Si, Mn and C is element alloyed, molten steel after alloyingMiddle C content is 0.16 % by weight, and Mn content is 0.45 % by weight, and Si content is 0.30 % by weight, PContent is 0.015 % by weight, and S content is 0.010 % by weight, now in molten steel, samples the examination of taking-upTi content in the cooling rear mensuration steel of sample is 0.001 % by weight.
Molten steel starts electrical heating after arriving LF stove, stops heating in the time that liquid steel temperature is heated to 1575 DEG C,To adding aluminium powder in molten steel, (aluminium kind is identical with preparation example 1, the aluminium amount phase of bringing in aluminium powder and preparation example 1With), simultaneously with feeding wire machine feeding core-spun yarn D1 and rock ladle simultaneously, simultaneously to core-spun yarn and molten steelContact area winding-up inert gas (inert gas is argon gas), to prepare the Ti Alloying of required Ti contentMolten steel, the titanium recovery rate (the results are shown in Table 1) of this process; Then flow on billet caster titanium at 6 machines 6Alloying molten steel casting becomes 180mm × 1530mm strand, after rolling, become a useful person for thick for 16mm,The finished steel plate of wide 2000mm, its Ti content is 0.05%, yield strength and tensile strength are in table 1.
Table 1
In table 1, be all at C content, Mn content, calcium content, each finished steel under the identical condition of silicone contentThe contrast of performance data and the contrast of titanium recovery rate.
Data by table 1 can find out, core-spun yarn of the present invention is for realizing the alloying of titanium, the returning of titaniumYield high and stable (basic guarantee is between 80%-85%). And adopt core-spun yarn of the present invention to carry out steelThe titanium alloy steel yield strength and the tension that after the Ti Alloying molten steel casting that water Ti Alloying obtains, obtain are strongSpend high.
More than describe the preferred embodiment of the present invention in detail, still, the present invention is not limited to above-mentioned realityExecute the detail in mode, within the scope of technical conceive of the present invention, can be to technical side of the present inventionCase is carried out multiple simple variant, and these simple variant all belong to protection scope of the present invention.
It should be noted that in addition each the concrete technology spy described in above-mentioned detailed description of the inventionLevy, in reconcilable situation, can combine by any suitable mode.
In addition, between various embodiment of the present invention, also can be combined, as long as itsWithout prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (5)
1. a preparation method for Ti Alloying molten steel, is characterized in that, the method comprises: dynamicallyUnder condition, titanium aluminium core cabling wire feeding is treated to carry out in titanium alloyed molten steel Ti Alloying, and fed at core-spun yarnWhen entering to treat in titanium alloyed molten steel, to the contact area winding-up indifferent gas of core-spun yarn and described molten steelBody, wherein, described in treat that titanium alloyed molten steel is the molten steel of carbon silicomangan, and described in treat titaniumThe temperature of the molten steel of alloying is 1550-1600 DEG C, and described core-spun yarn comprises: sandwich layer and the described core of parcelThe aluminium skin of layer, described sandwich layer is titanium-iron powder, the weight ratio of described titanium-iron powder and aluminium skin is 5-10:1, described inGranularity≤the 1.5mm of titanium-iron powder, the thickness of described aluminium skin is 0.8-1.5mm.
2. preparation method according to claim 1, wherein, contains 40-85 in described titanium-iron powderThe Ti of % by weight, the C of < 5 % by weight, the S of < 0.05 % by weight; Al content > 90 weights in aluminium skinAmount %.
3. preparation method according to claim 1, wherein, the diameter of described core-spun yarn is12-20mm。
4. the Ti Alloying molten steel that in claim 1-3, the method described in any one obtains.
5. a titaniferous steel alloy, is characterized in that, this titaniferous steel alloy is by claimed in claim 4Ti Alloying molten steel casting forms.
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| CN1213704A (en) * | 1998-08-28 | 1999-04-14 | 江苏江南铁合金厂 | Method of preparing high titanium ferroally powder |
| JP2008506837A (en) * | 2004-07-16 | 2008-03-06 | トランジション インターナショナル リミテッド | Products for increasing titanium content in steel |
| CN202369603U (en) * | 2011-12-07 | 2012-08-08 | 上海马腾新型材料厂 | Low nitrogen titanium iron core-spun yarn |
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| CN101503746A (en) * | 2009-03-19 | 2009-08-12 | 新余钢铁股份有限公司 | Method for producing boron steel by converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213704A (en) * | 1998-08-28 | 1999-04-14 | 江苏江南铁合金厂 | Method of preparing high titanium ferroally powder |
| JP2008506837A (en) * | 2004-07-16 | 2008-03-06 | トランジション インターナショナル リミテッド | Products for increasing titanium content in steel |
| CN202369603U (en) * | 2011-12-07 | 2012-08-08 | 上海马腾新型材料厂 | Low nitrogen titanium iron core-spun yarn |
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