CN106086303A - Magnesium calcium alloy core-spun yarn of Ferrous Metallurgy and preparation method thereof - Google Patents

Magnesium calcium alloy core-spun yarn of Ferrous Metallurgy and preparation method thereof Download PDF

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Publication number
CN106086303A
CN106086303A CN201610604432.2A CN201610604432A CN106086303A CN 106086303 A CN106086303 A CN 106086303A CN 201610604432 A CN201610604432 A CN 201610604432A CN 106086303 A CN106086303 A CN 106086303A
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China
Prior art keywords
core
spun yarn
alloy
magnesium
magnesium calcium
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Inventor
付建勋
李健
吴彦欣
胡德林
张明
徐杰
朱玉员
刘辉
李徐
刘思雨
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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Priority to CN201610604432.2A priority Critical patent/CN106086303A/en
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/06—Deoxidising, e.g. killing

Abstract

Magnesium calcium alloy core-spun yarn that the invention discloses a kind of Ferrous Metallurgy and preparation method thereof, it is made up of core material and crust, core material is made up of magnesium, calcium, silicon, wherein Mg:6% ~ 38%, Ca:5% ~ 30%, remaining is for silicon and prepares inevitable impurity element during raw material, is preferably controlled between 5:3 to 7.5:3 by the mass ratio of Mg/Ca.For pinion steel, automatic steel, non-hardened and tempered steel, Ca can improve Al2O3The form of field trash and MnS field trash and the cleanliness factor of raising molten steel, Mg improves the form of field trash equally and improves the cleanliness factor of molten steel, and use magnesium calcium Combined Processing can play the effect of degeneration field trash, cleaning molten steel, and Mg can significantly improve useful effect and the recovery rate of Ca simultaneously.Feed this core-spun yarn when refine, deoxidation, field trash modification, cleaning molten steel and the effect of raising steel performance can be played.

Description

Magnesium calcium alloy core-spun yarn of Ferrous Metallurgy and preparation method thereof
Technical field
The present invention relates to a kind of various additive materials added in molten steel or ferrum liquid and preparation method thereof, particularly relate to Composite additives of core-spun yarn form of a kind of Ferrous Metallurgy and preparation method thereof, is applied to metal material field trash shape The control technical field of state.
Background technology
In pinion steel, automatic steel, non-hardened and tempered steel, usually contain a certain amount of sulfur, during smelting, mainly use aluminium deoxidation, Its product Al2O3Being mingled with in tufted, its fusing point is up to 2050 DEG C, is solid-state at a temperature of steel-making, due to its inter-molecular binding force relatively Greatly, Al during continuous casting2O3Easily stick on the wall of the mouth of a river, dross is grown up in accumulation, can cause nozzle blocking；Adding man-hour at steel, it is at steel In in chain or string-like distribution, deteriorate that steel are internal and the quality on surface.Use Calcium treatment technology, Al can be made2O3It is mingled with and becomes low The calcium-aluminate of fusing point.
Calcium treatment technology can also carry out degenerative treatments to sulfide in pinion steel, automatic steel, non-hardened and tempered steel, makes sulfuration Thing form is optimised, and performance is promoted.Still for spherical or connect after processing with the sulfide that after Calcium treatment, MnS is become calcic The most spherical.So can improve the anisotropy of steel.Calcium can generate CaS with reaction of Salmon-Saxl, or plays desulphurization reaction at the outer layer of CaO Generate CaS, or with CaO Al2O3、CaO、Al2O3、SiO2Deng field trash react generation CaS, last CaS be present in these folder The outer layer of foreign material.Owing to this type impurity plasticity is low, indeformable in the course of processing, therefore sulfide will not be as MnS, owing to moulding The property course of processing fortunately can become strip or sheet.Meanwhile, steel often has some are not intended to want to steel mechanicalness Can be very difficult to remove by general chemical method with hot-working character disadvantageous trace impurity such as As, Sb, Sn, Bi, Pb etc..Calcium and this A little elements have certain affinity, therefore Calcium treatment technology can remove the impurity element that these are harmful.
Adding magnesium in molten steel and equally play the effect of degeneration field trash, magnesium is by participating in the oxygen that deoxygenation generates Change magnesium and will generate magnesium aluminate spinel field trash with aluminium oxide, play Al2O3The effect of inclusion modification, such magnesium aluminate spinel Field trash can be the most tiny and be randomly dispersed in steel, will not impact the fatigue behaviour of steel and other performances.Meanwhile, Magnesium can strengthen and improve the useful effect of calcium, improves the recovery rate of calcium, and magnesium calcium Combined Processing has than single Calcium treatment, list Only magnesium processes more preferable effect.Such as number of patent application, to be that 201610163260.x discloses the 20MnCr of a kind of calcium-magnesium-containing sulfur easy Cutting pinion steel and preparation method thereof, number of patent application is 201610163261.4 to disclose a kind of 45MnVS containing magnesium calcium and easily cut Cutting non-hardened and tempered steel and manufacture method thereof, number of patent application is 20,161,016 3553.8 to disclose a kind of automatic steel containing magnesium calcium And production technology, number of patent application be 201210315608.4 disclose with magnalium modification be situated between thing refinement crystalline grain of steel smelting side Method.
At 1600 DEG C, the fusing point of magnesium is 649 DEG C, and boiling point is 1090 DEG C, and the fusing point of calcium is 839 DEG C, and boiling point is 1484 DEG C, Under the temperature conditions of steel-making and refine, magnesium, calcium vapour pressure the highest, directly magnesium, calcium are added in molten steel, magnesium, calcium can be made fast After fast-growing becomes steam to escape, it is impossible to be directly added in steel, and calcium, magnesium steam at high temperature contact with molten steel, can cause acutely Burning causes blast, causes molten steel splash accident, the most directly by big for consumption in magnesium, calcium addition molten steel, controls field trash Metallurgical technology cost is high, and magnesium calcium generally adds molten steel with the form of alloy claded wire, how with calcium-silicon line, Si-Mg alloy line Form adds, but with feed postition line feeding in molten metal of two kinds of alloy wires, is unfavorable for the accurate control to alloying component.
Summary of the invention
In order to solve prior art problem, it is an object of the invention to the deficiency overcoming prior art to exist, it is provided that a kind of Magnesium calcium alloy core-spun yarn of Ferrous Metallurgy and preparation method thereof, for pinion steel, automatic steel, non-hardened and tempered steel, alloy cored Ca in line can improve Al2O3The form of field trash and MnS field trash and the cleanliness factor of raising molten steel, the Mg in alloy claded wire The form of field trash can be improved equally and improve the cleanliness factor of molten steel, and it is multiple to use magnesium calcium alloy core-spun yarn of the present invention to carry out magnesium calcium Conjunction processes the effect that simultaneously can play degeneration field trash, cleaning molten steel, and Mg can significantly improve useful effect and the receipts of Ca Yield.Core-spun yarn of the present invention is fed, moreover it is possible to play deoxidation, field trash modification, cleaning molten steel and raising steel performance when refine Comprehensive function effect.
Creating purpose for reaching foregoing invention, the present invention uses following technical proposals:
The magnesium calcium alloy core-spun yarn of a kind of Ferrous Metallurgy, is made up of the composite material line with preseting length core and crust Material, it is characterised in that the chemical composition mass percent composition of the material of the core of core-spun yarn is as follows: Mg is 6 ~ 38%, Ca is 5 ~ 30%, remaining is silicon and inevitable impurity element；The crust of core-spun yarn at least uses thickness to be 0.3～3 millimeter of cold-rolled strip Make.
As currently preferred technical scheme, the Mg in the material of the core of core-spun yarn is 10 ~ 20%, and Ca is 10 ~ 25%.
As the technical scheme that the present invention is further preferred, the Mg in the material of the core of core-spun yarn is 15 ~ 20%, and Ca is 15~20%。
As the further preferred technical scheme of technique scheme, the Mg:Ca's in the material of the core of core-spun yarn Mass ratio controls between 5:3～7.5:3.
As the further preferred technical scheme of technique scheme, the Mg:Ca's in the material of the core of core-spun yarn Mass ratio controls between 5:3～6.5:3.
The preparation method of the magnesium calcium alloy core-spun yarn of a kind of Ferrous Metallurgy of the present invention, uses magnesium material, calcium material and silicon Material, as raw material, is carried out as follows according to the main chemical compositions mass percent of the material of the core of core-spun yarn to be prepared and joins Material: Mg is 6 ~ 38%, and Ca is 5 ~ 30%, and remaining raw material is mainly silicon, colds pressing after magnesium material, calcium material and silicon materials raw material being mixed Becoming magnesium calcium alloy base, then preheat, then through being hot extruded into the tinsel of magnesium calcium alloy, finally using thickness is 0.3～3 millis The cold-rolled strip of rice, is rolled into real core metal core-spun yarn by the tinsel of magnesium calcium alloy.
The mass ratio of the Mg:Ca in the material of the core of core-spun yarn is preferably controlled between 5:3～7.5:3.
Preferably employ Si-Mg alloy and Si-Ca alloy as raw material, or preferably employ Si-Mg alloy, Si-Ca alloy With the industrial silica fume that silicon content is 99.0 ~ 99.995wt.% as raw material.
The present invention compared with prior art, has and the most obviously highlights substantive distinguishing features and remarkable advantage:
1. when using core-spun yarn of the present invention, it is possible to ensure just to start to melt when core-spun yarn can be inserted into molten steel depths, add core Time of contact between material and pending molten steel, thus improve the recovery rate of effective ingredient；
Ca in core-spun yarn the most of the present invention can improve the form of field trash and improve the cleanliness factor of molten steel, core-spun yarn of the present invention In Mg improve the form of field trash equally and improve the cleanliness factor of molten steel, and better more longlasting, and can improve The useful effect of Ca, improves the recovery rate of Ca.Si can improve the intensity of solid solution in steel and cold work hardening degree makes steel Toughness and plasticity reduce, and Si and Ca, Mg play combined deoxidation effect, can also strengthen the ductility of steel simultaneously, improve The anti-wear performance of steel；
3. using after core-spun yarn of the present invention smelts, its product can form polynary mutual solution, reduce deoxidation products activity and Fusing point, beneficially deoxidation are carried out, and make molten steel purifying effect more preferable, and Mg, Ca can make the inclusion modification in steel be low melting point The gathering of magnesium aluminate spinel and calcium-aluminate, beneficially field trash is floated and is removed, thus improves the performance of steel.
Accompanying drawing explanation
Fig. 1 is metallograph and the inclusion distribution thereof of untreated steel sample.
Fig. 2 is metallograph and the inclusion distribution thereof of the steel sample of Calcium treatment in example one by contrast.
Fig. 3 is metallograph and the inclusion distribution thereof of the steel sample that magnesium processes in example two by contrast.
Fig. 4 be through the embodiment of the present invention one magnesium calcium alloy core-spun yarn carry out magnesium calcium Combined Processing steel sample metallograph and Inclusion distribution.
Detailed description of the invention
Details are as follows for the preferred embodiments of the present invention:
Embodiment one:
In the present embodiment, the preparation method of the magnesium calcium alloy core-spun yarn of a kind of Ferrous Metallurgy, use Si-Mg alloy, Si-Ca Alloy and industrial silica fume that silicon content is 99wt.% are as raw material, according to mainization of material of the core of core-spun yarn to be prepared Learning Ingredient percent and being carried out as follows dispensing: Mg is 6%, and Ca is 5%, and remaining raw material is mainly silicon, by Si-Mg alloy, Si-Ca It is cold-pressed into magnesium calcium alloy base after alloy and industrial silica fume mixing, then preheats, then through being hot extruded into the metal of magnesium calcium alloy Silk, the cold-rolled strip finally using thickness to be 0.3 millimeter, the tinsel of magnesium calcium alloy is rolled into real core metal core-spun yarn.
Comparative example one:
In the present embodiment, the preparation method of the calcium alloy core-spun yarn of a kind of Ferrous Metallurgy, use Si-Ca alloy and silicon content For the industrial silica fume of 99wt.% as raw material, according to the main chemical compositions quality hundred of material of the core of core-spun yarn to be prepared It is 5% that proportion by subtraction is carried out as follows dispensing: Ca, and remaining raw material is mainly silicon, is cold-pressed into calcium after Si-Ca alloy and industrial silica fume being mixed Alloy preform, then preheat, then through being hot extruded into the tinsel of calcium alloy, the cold-rolled steel finally using thickness to be 0.3 millimeter Band, is rolled into real core metal core-spun yarn by the tinsel of calcium alloy.
Comparative example two:
In the present embodiment, the preparation method of the Mg alloy cored wine of a kind of Ferrous Metallurgy, use Si-Mg alloy and silicon content For the industrial silica fume of 99wt.% as raw material, according to the main chemical compositions quality hundred of material of the core of core-spun yarn to be prepared It is 6% that proportion by subtraction is carried out as follows dispensing: Mg, and remaining raw material is mainly silicon, is cold-pressed into magnesium after Si-Mg alloy and industrial silica fume being mixed Alloy preform, then preheat, then through being hot extruded into the tinsel of magnesium alloy, the cold-rolled steel finally using thickness to be 0.3 millimeter Band, is rolled into real core metal core-spun yarn by the tinsel of magnesium alloy.
Experimental test and analysis:
In conjunction with the embodiments one with comparative example one and comparative example two, in order to verify the right of magnesium calcium alloy core-spun yarn prepared by embodiment one The treatment effect of Control and Inclusion Removal, has carried out the experiment of metal material, after 4 parts of identical steel samples that the trade mark is X1215 are melted, It is respectively adopted the magnesium calcium alloy core-spun yarn of embodiment one preparation, the calcium alloy core-spun yarn of comparative example one preparation and comparative example two preparation Mg alloy cored wine, 3 parts of steel sample melts therein are carried out different process respectively, with the steel sample melt one being not handled by And solidify the steel ingot obtaining 4 pieces of heterogeneities, then the steel ingot obtained is cut, the longitudinal section at surface 1/2 of adjusting the distance Carry out grinding and polishing process, then by metallograph and the inclusion distribution thereof of observation by light microscope steel sample.
See Fig. 1～4, by field trash typical case's pattern it has been observed that the metallograph of Fig. 1 untreated steel sample is mingled with Thing size is relatively big, and major part be spherical, and also having is corynebacterium on a small quantity, overall distribution embody slightly along Grain Boundary Character.Fig. 2 warp The calcium alloy core-spun yarn of comparative example one preparation carries out in the steel sample of Calcium treatment inclusion size relative to the inclusion size in Fig. 1 Having reduced, the field trash of corynebacterium form increases.The Mg alloy cored wine of Fig. 3 example two by contrast preparation carries out the steel of magnesium process In sample, inclusion size is obviously reduced, and corynebacterium the amount of inclusions increases, and has the trend along crystal boundary distribution.And Fig. 4 is through embodiment It is the most relatively fine that the magnesium calcium alloy core-spun yarn of one preparation carries out inclusion size in the steel sample of magnesium calcium Combined Processing, wherein ellipsoid and The ratio of stub shape has increased, and shows as obviously along the feature of crystal boundary distribution.This proves that embodiment one is made Standby magnesium calcium alloy core-spun yarn is respond well to field trash modification in molten steel, is conducive to improving the performance of steel.Use this enforcement After example one core-spun yarn, its product can form polynary mutual solution, and the activity and the fusing point, beneficially deoxidation that reduce deoxidation products are carried out, Make molten steel purifying effect more preferable, magnesium aluminate spinel that Mg, Ca can make the inclusion modification in steel be low melting point and calcium-aluminate, The gathering being conducive to field trash is floated and is removed, thus improves the performance of steel.
Embodiment two:
The present embodiment is essentially identical with embodiment one, is particular in that:
In the present embodiment, the preparation method of the magnesium calcium alloy core-spun yarn of a kind of Ferrous Metallurgy, use Si-Mg alloy, Si-Ca Alloy and industrial silica fume that silicon content is 99wt.% are as raw material, according to mainization of material of the core of core-spun yarn to be prepared Learning Ingredient percent and being carried out as follows dispensing: Mg is 38%, and Ca is 30%, and remaining raw material is mainly silicon, by Si-Mg alloy, Si- It is cold-pressed into magnesium calcium alloy base after Ca alloy and industrial silica fume mixing, then preheats, then through being hot extruded into the gold of magnesium calcium alloy Belong to silk, the cold-rolled strip finally using thickness to be 3 millimeters, the tinsel of magnesium calcium alloy is rolled into real core metal core-spun yarn.Warp It is the most relatively fine, wherein that magnesium calcium alloy core-spun yarn prepared by the present embodiment carries out inclusion size in the steel sample of magnesium calcium Combined Processing The ratio of ellipsoid and stub shape has increased, and shows as obviously along the feature of crystal boundary distribution.For this enforcement Example steel sample, Ca can improve Al2O3The form of field trash and MnS field trash and improve the cleanliness factor of molten steel, Mg improves equally and is mingled with The form of thing and the cleanliness factor of raising molten steel, and use magnesium calcium Combined Processing can play degeneration field trash, cleaning molten steel simultaneously Effect, and Mg can significantly improve useful effect and the recovery rate of Ca.Feed this core-spun yarn when refine, can play de- The modification of oxygen, field trash, cleaning molten steel and the effect of raising steel performance.
Embodiment three:
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, the preparation method of the magnesium calcium alloy core-spun yarn of a kind of Ferrous Metallurgy, use Si-Mg alloy, Si-Ca Alloy and industrial silica fume that silicon content is 99wt.% are as raw material, according to mainization of material of the core of core-spun yarn to be prepared Learning Ingredient percent and being carried out as follows dispensing: Mg is 10%, and Ca is 10%, and remaining raw material is mainly silicon, by Si-Mg alloy, Si- It is cold-pressed into magnesium calcium alloy base after Ca alloy and industrial silica fume mixing, then preheats, then through being hot extruded into the gold of magnesium calcium alloy Belong to silk, the cold-rolled strip finally using thickness to be 0.3 millimeter, the tinsel of magnesium calcium alloy is rolled into real core metal core-spun yarn. Comparing embodiment one, the magnesium calcium alloy core-spun yarn prepared through the present embodiment carries out inclusion size in the steel sample of magnesium calcium Combined Processing The most tiny, wherein the ratio of ellipsoid and stub shape has increased, and shows as obviously being distributed along crystal boundary Feature.
Embodiment four:
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, the preparation method of the magnesium calcium alloy core-spun yarn of a kind of Ferrous Metallurgy, use Si-Mg alloy, Si-Ca Alloy and industrial silica fume that silicon content is 99wt.% are as raw material, according to mainization of material of the core of core-spun yarn to be prepared Learning Ingredient percent and being carried out as follows dispensing: Mg is 20%, and Ca is 25%, and remaining raw material is mainly silicon, by Si-Mg alloy, Si- It is cold-pressed into magnesium calcium alloy base after Ca alloy and industrial silica fume mixing, then preheats, then through being hot extruded into the gold of magnesium calcium alloy Belong to silk, the cold-rolled strip finally using thickness to be 3 millimeters, the tinsel of magnesium calcium alloy is rolled into real core metal core-spun yarn.Phase Ratio embodiment one, it is bright that the magnesium calcium alloy core-spun yarn prepared through the present embodiment carries out inclusion size in the steel sample of magnesium calcium Combined Processing Aobvious more tiny, wherein the ratio of ellipsoid and stub shape has increased, and shows as obviously along crystal boundary distribution Feature.
Embodiment five:
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, the preparation method of the magnesium calcium alloy core-spun yarn of a kind of Ferrous Metallurgy, use Si-Mg alloy, Si-Ca Alloy and industrial silica fume that silicon content is 99wt.% are as raw material, according to mainization of material of the core of core-spun yarn to be prepared Learning Ingredient percent and being carried out as follows dispensing: Mg is 15%, and Ca is 15%, and remaining raw material is mainly silicon, by Si-Mg alloy, Si- It is cold-pressed into magnesium calcium alloy base after Ca alloy and industrial silica fume mixing, then preheats, then through being hot extruded into the gold of magnesium calcium alloy Belong to silk, the cold-rolled strip finally using thickness to be 0.3 millimeter, the tinsel of magnesium calcium alloy is rolled into real core metal core-spun yarn. Comparing embodiment three, the magnesium calcium alloy core-spun yarn prepared through the present embodiment carries out inclusion size in the steel sample of magnesium calcium Combined Processing The most tiny, wherein the ratio of ellipsoid and stub shape has increased, and shows as obviously being distributed along crystal boundary Feature.
Embodiment six:
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, the preparation method of the magnesium calcium alloy core-spun yarn of a kind of Ferrous Metallurgy, use Si-Mg alloy, Si-Ca Alloy and industrial silica fume that silicon content is 99wt.% are as raw material, according to mainization of material of the core of core-spun yarn to be prepared Learning Ingredient percent and being carried out as follows dispensing: Mg is 20%, and Ca is 20%, and remaining raw material is mainly silicon, by Si-Mg alloy, Si- It is cold-pressed into magnesium calcium alloy base after Ca alloy and industrial silica fume mixing, then preheats, then through being hot extruded into the gold of magnesium calcium alloy Belong to silk, the cold-rolled strip finally using thickness to be 3 millimeters, the tinsel of magnesium calcium alloy is rolled into real core metal core-spun yarn.Phase Ratio embodiment three, it is bright that the magnesium calcium alloy core-spun yarn prepared through the present embodiment carries out inclusion size in the steel sample of magnesium calcium Combined Processing Aobvious more tiny, wherein the ratio of ellipsoid and stub shape has increased, and shows as obviously along crystal boundary distribution Feature.
Embodiment seven:
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, the preparation method of the magnesium calcium alloy core-spun yarn of a kind of Ferrous Metallurgy, use Si-Mg alloy, Si-Ca Alloy and industrial silica fume that silicon content is 99wt.% are as raw material, according to mainization of material of the core of core-spun yarn to be prepared Learning Ingredient percent, to be carried out as follows dispensing: Mg be 8.33%, and Ca is 5%, and remaining raw material is mainly silicon, by Si-Mg alloy, It is cold-pressed into magnesium calcium alloy base after Si-Ca alloy and industrial silica fume mixing, then preheats, then through being hot extruded into magnesium calcium alloy Tinsel, the cold-rolled strip finally using thickness to be 0.3 millimeter, the tinsel of magnesium calcium alloy is rolled into real core metal cored Line.Comparing embodiment one, the magnesium calcium alloy core-spun yarn prepared through the present embodiment carries out field trash in the steel sample of magnesium calcium Combined Processing Size is the most tiny, and wherein the ratio of ellipsoid and stub shape has increased, and shows as obviously along crystal boundary The feature of distribution.
Embodiment eight:
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, the preparation method of the magnesium calcium alloy core-spun yarn of a kind of Ferrous Metallurgy, use Si-Mg alloy, Si-Ca Alloy and industrial silica fume that silicon content is 99wt.% are as raw material, according to mainization of material of the core of core-spun yarn to be prepared Learning Ingredient percent, to be carried out as follows dispensing: Mg be 38%, and Ca is 22.8%, and remaining raw material is mainly silicon, by Si-Mg alloy, It is cold-pressed into magnesium calcium alloy base after Si-Ca alloy and industrial silica fume mixing, then preheats, then through being hot extruded into magnesium calcium alloy Tinsel, the cold-rolled strip finally using thickness to be 3 millimeters, the tinsel of magnesium calcium alloy is rolled into real core metal core-spun yarn. Comparing embodiment one, the magnesium calcium alloy core-spun yarn prepared through the present embodiment carries out inclusion size in the steel sample of magnesium calcium Combined Processing The most tiny, wherein the ratio of ellipsoid and stub shape has increased, and shows as obviously being distributed along crystal boundary Feature.
Embodiment nine:
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, the preparation method of the magnesium calcium alloy core-spun yarn of a kind of Ferrous Metallurgy, use Si-Mg alloy, Si-Ca Alloy and industrial silica fume that silicon content is 99wt.% are as raw material, according to mainization of material of the core of core-spun yarn to be prepared Learning Ingredient percent, to be carried out as follows dispensing: Mg be 12.5%, and Ca is 5%, and remaining raw material is mainly silicon, by Si-Mg alloy, It is cold-pressed into magnesium calcium alloy base after Si-Ca alloy and industrial silica fume mixing, then preheats, then through being hot extruded into magnesium calcium alloy Tinsel, the cold-rolled strip finally using thickness to be 0.3 millimeter, the tinsel of magnesium calcium alloy is rolled into real core metal cored Line.Comparing embodiment one, the magnesium calcium alloy core-spun yarn prepared through the present embodiment carries out field trash in the steel sample of magnesium calcium Combined Processing Size is the most tiny, and wherein the ratio of ellipsoid and stub shape has increased, and shows as obviously along crystal boundary The feature of distribution.
Embodiment ten:
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, the preparation method of the magnesium calcium alloy core-spun yarn of a kind of Ferrous Metallurgy, use Si-Mg alloy, Si-Ca Alloy and industrial silica fume that silicon content is 99wt.% are as raw material, according to mainization of material of the core of core-spun yarn to be prepared Learning Ingredient percent, to be carried out as follows dispensing: Mg be 10.83%, and Ca is 5%, and remaining raw material is mainly silicon, by Si-Mg alloy, It is cold-pressed into magnesium calcium alloy base after Si-Ca alloy and industrial silica fume mixing, then preheats, then through being hot extruded into magnesium calcium alloy Tinsel, the cold-rolled strip finally using thickness to be 0.3 millimeter, the tinsel of magnesium calcium alloy is rolled into real core metal cored Line.Comparing embodiment nine, the magnesium calcium alloy core-spun yarn prepared through the present embodiment carries out field trash in the steel sample of magnesium calcium Combined Processing Size is the most tiny, and wherein the ratio of ellipsoid and stub shape has increased, and shows as obviously along crystal boundary The feature of distribution.
Above in conjunction with accompanying drawing, the embodiment of the present invention is illustrated, but the invention is not restricted to above-described embodiment, it is also possible to The purpose of the innovation and creation according to the present invention makes multiple change, under all spirit according to technical solution of the present invention and principle The change made, modify, substitute, combine or simplify, all should be the substitute mode of equivalence, as long as meeting the goal of the invention of the present invention, The know-why of the magnesium calcium alloy core-spun yarn without departing from Ferrous Metallurgy of the present invention and preparation method thereof and inventive concept, all Belong to protection scope of the present invention.

Claims (8)

1. a magnesium calcium alloy core-spun yarn for Ferrous Metallurgy, is made up of the composite material line with preseting length core and crust Material, it is characterised in that the chemical composition mass percent composition of the material of the core of core-spun yarn is as follows: Mg is 6 ~ 38%, Ca is 5 ~ 30%, remaining is silicon and inevitable impurity element；The crust of core-spun yarn at least uses thickness to be 0.3～3 millimeter of cold-rolled strip Make.
The magnesium calcium alloy core-spun yarn of Ferrous Metallurgy the most according to claim 1, it is characterised in that: the material of the core of core-spun yarn Mg in material is 10 ~ 20%, and Ca is 10 ~ 25%.
The magnesium calcium alloy core-spun yarn of Ferrous Metallurgy the most according to claim 2, it is characterised in that: the material of the core of core-spun yarn Mg in material is 15 ~ 20%, and Ca is 15 ~ 20%.
4. according to the magnesium calcium alloy core-spun yarn of Ferrous Metallurgy described in any one in claims 1 to 3, it is characterised in that: bag The mass ratio of the Mg:Ca in the material of the core of heart yearn controls between 5:3～7.5:3.
The magnesium calcium alloy core-spun yarn of Ferrous Metallurgy the most according to claim 4, it is characterised in that: the material of the core of core-spun yarn The mass ratio of the Mg:Ca in material controls between 5:3～6.5:3.
6. the preparation method of the magnesium calcium alloy core-spun yarn of Ferrous Metallurgy described in a claim 1, it is characterised in that: use magnesium Material, calcium material and silicon materials are as raw material, according to the main chemical compositions quality of material of the core of core-spun yarn to be prepared It is 6 ~ 38% that percentage ratio is carried out as follows dispensing: Mg, and Ca is 5 ~ 30%, and remaining raw material is mainly silicon, by magnesium material, calcium material and silicon material It is cold-pressed into magnesium calcium alloy base after material raw material mixing, then preheats, then through being hot extruded into the tinsel of magnesium calcium alloy, finally adopt With the cold-rolled strip that thickness is 0.3～3 millimeter, the tinsel of magnesium calcium alloy is rolled into real core metal core-spun yarn.
The preparation method of the magnesium calcium alloy core-spun yarn of Ferrous Metallurgy the most according to claim 6, it is characterised in that: core-spun yarn Core material in the mass ratio of Mg:Ca control between 5:3～7.5:3.
8. according to the preparation method of the magnesium calcium alloy core-spun yarn of Ferrous Metallurgy described in claim 6 or 7, it is characterised in that: adopt With Si-Mg alloy and Si-Ca alloy as raw material, or use Si-Mg alloy, Si-Ca alloy and silicon content be 99.0 ~ The industrial silica fume of 99.995wt.% is as raw material.
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JP7060113B2 (en) 2019-06-17 2022-04-26 Ｊｆｅスチール株式会社 Method of adding Ca to molten steel

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