CN107829017A - A kind of sulphur oxygen inovulant of high intensity - Google Patents
A kind of sulphur oxygen inovulant of high intensity Download PDFInfo
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- CN107829017A CN107829017A CN201711194589.3A CN201711194589A CN107829017A CN 107829017 A CN107829017 A CN 107829017A CN 201711194589 A CN201711194589 A CN 201711194589A CN 107829017 A CN107829017 A CN 107829017A
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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
- C22C33/08—Making cast-iron alloys
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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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/10—Making spheroidal graphite cast-iron
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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
- C22C33/08—Making cast-iron alloys
- C22C33/10—Making cast-iron alloys including procedures for adding magnesium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/04—Cast-iron alloys containing spheroidal graphite
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention provides a kind of sulphur oxygen inovulant of high intensity, the mass percent of element is contained by the sulphur oxygen inovulant：Si：70 76%, Ca：0.2 1.0%, Ba：0.3 0.5%, La：1.5 2.0%, Al：0.5 1.5%, S：0.3 0.9%, O：0.3 0.9%, Sb：0.5 1.5%, surplus is iron；The sulphur oxygen inovulant is prepared by the raw material of following parts by weight：24 parts of steel scrap, 130 140 parts of ferrosilicon, 1 1.4 parts of silicon barium, 1 1.8 parts of silico-calcium, pure 24 parts of lanthanum, 1.5 2.5 parts of antimony, 1.4 parts of 12 parts of FeS, FeO1.The high intensity sulphur oxygen inovulant that the present invention prepares can increase substantially the number of graphite ball in spheroidal graphite cast-iron, the intensity and toughness of cast iron can be improved, the obvious chilling tendency for reducing cast iron, improve Oxygen potential, number of graphite ball and the ferrite content of spheroidal graphite cast-iron, the contraction during casting is eliminated, the complicated casting of excellent quality can be formed.
Description
Technical field
The present invention relates to a kind of casting iron field, and in particular to a kind of sulphur oxygen inovulant of high intensity.
Background technology
Inovulant can promote graphitization, reduce chilling tendency, improve graphite form and distribution situation, increase eutectic cell
Quantity, matrix is refined, in the casting process of spheroidal graphite cast-iron, the selection of inovulant is particularly important.It is most commonly used at present
Inovulant is ferrosilicon, wherein also adding the above-mentioned member for having respond with sulphur oxygen containing metallic elements such as calcium, barium, strontium, manganese and zirconiums
Element, it is therefore an objective to make it be combined with the sulphur in iron, oxygen, effective heterogeneous crystallization nuclei is provided for graphite.But molten iron after nodularization
In active sulphur and oxygen be to be greatly reduced, thus in inovulant addition element effect and it is limited, after processing may
The quantity of the effective nucleation of formation will restrict the effect that breeds, and ferrosilicon breed the casting that the iron liquid of production obtains tension it is strong
Degree is in below 300MPa, it is impossible to meets the machinery casting requirement of some needs high tenacity.
In order to strengthen the effect bred, there is a kind of new inovulant-angstrom willing sulphur oxygen inovulant in the market, wherein
Ce, 0.75-1.25% of Ca, 1.5-2.0% containing Si, 0.75-1.25% that mass percent is 70-76% Al, micro S
And O, this new inovulant can make microscopic structure being more uniformly distributed compared with silicon iron inoculator of spheroidal graphite cast-iron, shrinkage cavity tendency compared with
Small, hardness is also relatively strong, but the tensile strength of the casting bred using this new inovulant is generally below 420MPa,
Or some needs high-intensity high-tenacity casting can not be met（Such as QT600-10）Deng requirement.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of intensity height, shrink and be inclined to small, alloying element
The small sulphur oxygen inovulant with the segregation of trace element.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of sulphur oxygen inovulant of high intensity, the mass percent of element is contained by the sulphur oxygen inovulant：Si：70-76%, Ca：
0.2-1.0%, Ba：0.3-0.5%, La：1.5-2.0%, Al：0.5-1.5%, S：0.3-0.9%, O：0.3-0.9%, Sb：0.5-
1.5%, surplus is iron；
The sulphur oxygen inovulant is prepared by the raw material of following parts by weight：
Steel scrap 2-4 parts, ferrosilicon 130-140 parts, silicon barium 1-1.4 parts, silico-calcium 1-1.8 parts, pure lanthanum 2-4 parts, antimony 1.5-2.5 parts, FeS
1-2 parts, FeO 1-1.4 parts.
The sulphur oxygen inovulant of above-mentioned high intensity, wherein, the mass percent of element is contained by the sulphur oxygen inovulant：
Si：73%, Ca：0.6%, Ba：0.4%, La：1.75%, Al：1.0%, S：0.3-0.9%, O：0.3-0.9%, Sb：1.0%, surplus is
Iron；
The sulphur oxygen inovulant is prepared by the raw material of following parts by weight：
3 parts of steel scrap, 135 parts of ferrosilicon, 1.2 parts of silicon barium, 1.4 parts of silico-calcium, pure 3 parts of lanthanum, 2 parts of antimony, 1.5 parts of FeS, FeO1.2 parts.
The sulphur oxygen inovulant of above-mentioned high intensity, wherein, the steel scrap be carbon steel, wherein composition quality percentage composition such as
Under：C≤0.3, Si≤0.2, Mn≤0.3, P≤0.02, S≤0.015, surplus are iron.
The sulphur oxygen inovulant of above-mentioned high intensity, wherein, the trade mark of the ferrosilicon is by GB2272-2009 standards
FeSi75Al1.0-A or FeSi75Al1.0-B.
The sulphur oxygen inovulant of above-mentioned high intensity, wherein, the trade mark of the silicon barium is by GB/T15710-1995 standards
FeBa30Si60, its granularity are 10-50mm.
The sulphur oxygen inovulant of above-mentioned high intensity, wherein, the trade mark of the silico-calcium is by GB5051-2016 standards
Ca30Si60。
The preparation technology of the sulphur oxygen inovulant of above-mentioned high intensity, wherein, comprise the following steps：
（1）Dispensing：Steel scrap, ferrosilicon, silicon barium, silico-calcium, pure lanthanum, the antimony of above-mentioned parts by weight are weighed, is mixed；
（2）Melting：By above-mentioned raw materials at 1300-1380 DEG C melting 30-40min, then carry out metal mold ingot mould ingot casting, produce
Alloy pig；
（3）Broken, screening：By above-mentioned alloy pig crushing and screening into the grain of ferrosilicon containing lanthanum；
（4）It is blended：By step（3）In the obtained grain of ferrosilicon containing lanthanum mixed with FeS, FeO of above-mentioned parts by weight, 0.5 ~ 1h of stirring,
Produce powder.
The preparation technology of the sulphur oxygen inovulant of above-mentioned high intensity, wherein, the granularity of the grain of ferrosilicon containing lanthanum is 0.1-
0.7mm or 0.2-0.8mm.
The present invention is advantageous in that：
Product composition of the present invention is reasonable in design, and a variety of alloying elements are added while Si is added（Ca、Ba、La、Sb、Al）With one
Determine the nonmetalloid of concentration（S and O）, after respond strong Ca, Ba, La and S, O effects, more graphite wafer will be produced
Core, enhances pregnant effect, and the present invention utilizes La characteristic：La elements form the free energy of formation of compound than Ce members with S, O
The free energy of formation negative value that element forms compound with S, O is big, so La and S, O affinity are stronger, is advantageous to spheroidizing
It is stable；La oxygen reaction of Salmon-Saxl product and the mismatch of graphitiferous are 1.2%, and Ce for 2.9%, the iron of lanthanum rare earth inovulant processing
Water heterogeneous nuclei is accordingly more, and the graphite nodule of generation is more thinner, and the increase of ball number adds the volume fraction of casting premature coagulation
Greatly, crystal grain perimeter region degree of segregation mitigates, and the residual liquid of intergranular is reduced, and terminates eutectic freezing in advance, so as to prevent carbide
Produce.Less La residual volumes can play the illeffects for neutralizing tension-active element, and rare earth segregation tendency is reduced, and reduces deformity
The generation of graphite.Lanthanum element is present in liquid molten iron, suppresses growing up for austenite dendrites, can make spheroidal graphite cast-iron final set area
The Feeding channel in domain is smooth, and the carbon that may advantageously facilitate austenite precipitation is built up to the small graphite nodule of final set, forms graphitization
Expansion, offset shrinkage porosite and shrinkage cavity volume；During inoculation, Ca is primary reactive element, is had to eutectic graphite life core conclusive
Effect, balanced La content, can neutralize the effect of harmful element, produce stable intermetallic compound, and have to S and O compared with
Strong affinity, so as to produce highly stable oxide, sulfide and oxysulfide, and then promote the generation of graphite nodule, carry
High ferritic content.The generation that appropriate Sb promotes pearlite is added, ferrite and content of pearlite in alloy are balanced, so as to reach ball
Black cast iron improves intensity and the double action of high-elongation；Specifically, affecting laws of the inventor according to each element to cast iron, lead to
The optimum chemical composition that lot of experiments determines inovulant is crossed, wherein：
Si：It is the main component of inovulant, degree of supercooling can be reduced, promotes graphite forming core, change form and the refinement of graphite
Degree, promote graphitization, reduce chilling tendency, but silicon inoculation fade is rapid, it is necessary to add other alloying elements and nonmetallic
For element to play the effect of its is maximum, the content of silicon is 70-76%；
Ca：It is addition element important in various inovulants, has conclusive effect to eutectic graphite life core, stone can be obviously promoted
Mo Hua, increase number of graphite ball, reduce chilling tendency, there is desulfurization, a deoxidizing capacity, but the content of calcium is that have a range of, is contained
Measure it is too high increase chilling tendency on the contrary, consider, the content of calcium is 0.2-1.0%；
Ba：Silicon atom can be suppressed to spread in molten iron, the high silicon area concentration around graphite nucleation site is kept for the long period,
Fall time can effectively be extended, prevent from failing, while barium has very strong nucleation ability, can dramatically increase number of graphite ball, refinement
Crystal grain, improve graphite form, the inovulant of baric easily absorbed, and scum silica frost is few during processing, and barium can also effectively facilitate ferrite
Formation, but addition is excessive, and the ferrite content in tissue can be reduced on the contrary, be considered, and the content of barium is 0.3-0.5%；
La：Rare earth element（RE）Metalline is in positive trivalent, 15 elements of group of the lanthanides, as atomic number increase has atom（From
Son）The lanthanide contract phenomenon of reduced radius.Metal activity is successively decreased by lanthanum to lutetium, and lanthanum is most active, is needed when iron liquid solidifies a large amount of
Graphite crystallization nucleus.Oxide, sulfide, oxysulfide and the intermetallic compound of rare earth generation form a large amount of graphite wafers
Core, beneficial to increase number of graphite ball, improve Oxygen potential.Magnesium, rare earth act on cast iron chilling tendency strong and weak order and are：Pr→Dy→Nd
→ Ce → Mg → Y → Sm → Tb → Yb → Lu → Ho → La, La chilling tendency are minimum, lanthanum generation LaPb, La2Pb、LaSb、
La3Sb2、La2Sb、LaSb2, consider, the content of lanthanum is 1.5-2.0%；
Sb：Promote the generation of pearlite, balance ferrite and content of pearlite in alloy, intensity and Gao Yan are improved so as to reach spheroidal graphite cast-iron
The double action of rate is stretched, is considered, the content of antimony is 0.5-1.5%；
Al：It is important addition element in various inovulants, pregnant effect can be strengthened, in iron liquid, aluminium can reacts with oxygen, be formed
Dystectic compound, turn into the core of graphite crystallization, moreover, after adding the inovulant containing aluminium, part can be formed in iron liquid
Silicon-rich microcell, be advantageous to the precipitation of graphite, still, the aluminium content in iron liquid again can not be too high, due to aluminium element have it is very strong
Oxygen uptake characteristic, add 0.01% aluminium element, it is possible to cause casting to produce subcutaneous blowhole, consider, the content of aluminium is
0.5-1.5%；
S and O：After respond strong Ca, Ba, La and S, O effects, more graphite crystal nucleus will be produced, enhances and breeds effect
Fruit, and La has stronger affinity to S and O, so as to produce highly stable oxide, sulfide and oxysulfide, and silicon
Can be reacted with oxygen can form substrate of the particles such as silicate as graphite forming core, increase graphite nuclei quantity, refining eutectic
Group, adds eutectic graphite number, enhances pregnant effect, and still, S and O are appropriate, S and O constituent contents are excessive, can hinder again
Graphite balling-up, considers, and S and O content are respectively：S：0.3-0.9%；O：0.3-0.9%.
Brief description of the drawings
Fig. 1 is the metallographic structure schematic diagram of experimental group test block；
Fig. 2 is the metallographic structure schematic diagram of control group test block；
Fig. 3 is structure signal of the test block of experimental group Jing Guo 3% nital etch；
Fig. 4 is structure signal of the test block of control group Jing Guo 3% nital etch.
Embodiment
Embodiment 1
A kind of sulphur oxygen inovulant of high intensity, the mass percent of element is contained by the sulphur oxygen inovulant：Si：70-76%, Ca：
0.2-1.0%, Ba：0.3-0.5%, La：1.5-2.0%, Al：0.5-1.5%, S：0.3-0.9%, O：0.3-0.9%, Sb：0.5-
1.5%, surplus is iron；
The sulphur oxygen inovulant is prepared by the raw material of following parts by weight：
Steel scrap 2-4 parts, ferrosilicon 130-140 parts, silicon barium 1-1.4 parts, silico-calcium 1-1.8 parts, pure lanthanum 2-4 parts, antimony 1.5-2.5 parts, FeS
1-2 parts, FeO 1-1.4 parts.
The preparation technology of the sulphur oxygen inovulant of above-mentioned high intensity, comprises the following steps：
（1）Dispensing：Steel scrap, ferrosilicon, silicon barium, silico-calcium, pure lanthanum, the antimony of above-mentioned parts by weight are weighed, is mixed；
（2）Melting：Above-mentioned raw materials are added into medium-frequency induction furnace melting 30-40min, then metal at 1300-1380 DEG C
Type ingot mould ingot casting, produces alloy pig；
（3）Broken, screening：Ferrosilicon containing lanthanum by above-mentioned alloy pig crushing and screening into granularity for 0.1-0.7mm or 0.2-0.8mm
Grain；
（4）It is blended：By step（3）In the obtained grain of ferrosilicon containing lanthanum and above-mentioned parts by weight FeS, FeO, mix, 0.5 ~ 1h of stirring,
Produce powder.
The steel scrap is carbon steel, wherein under composition quality percentage composition such as table：C≤0.3, Si≤0.2, Mn≤0.3, P
≤ 0.02, S≤0.015, surplus are iron；
The trade mark of the ferrosilicon presses the FeSi75Al1.0-A or FeSi75AL1.0-B of GB2272-2009 standards；
The trade mark of the silicon barium presses the FeBa30Si60 of GB/T15710-1995 standards, and its granularity is 10-50mm；
The trade mark of the silico-calcium presses the Ca30Si60 of GB5051-2016 standards.
Embodiment 2
A kind of sulphur oxygen inovulant of high intensity, the mass percent of element is contained by the sulphur oxygen inovulant：Si：73%, Ca：
0.6%, Ba：0.4%, La：1.75%, Al：1.0%, S：0.6%, O：0.6%, Sb：1.0%, surplus is iron；
The sulphur oxygen inovulant is prepared by the raw material of following parts by weight：
3 parts of steel scrap, 135 parts of ferrosilicon, 1.2 parts of silicon barium, 1.4 parts of silico-calcium, pure 3 parts of lanthanum, 2 parts of antimony, 1.5 parts of FeS, FeO1.2 parts.
The preparation technology of the sulphur oxygen inovulant of above-mentioned high intensity, comprises the following steps：
（1）Dispensing：Steel scrap, ferrosilicon, silicon barium, silico-calcium, pure lanthanum, the antimony of above-mentioned parts by weight are weighed, is mixed；
（2）Melting：By above-mentioned raw materials add medium-frequency induction furnace at 1340 DEG C melting 35min, then carry out water cooling ingot mould
Ingot casting, produce alloy pig；
（3）Broken, screening：The grain of ferrosilicon containing lanthanum by above-mentioned alloy pig crushing and screening into granularity for 0.1-0.7mm；
（4）It is blended：By step（3）In the obtained grain of ferrosilicon containing lanthanum mixed with FeS, FeO of above-mentioned parts by weight, stirring 0.75h, i.e.,
Obtain powder.
The steel scrap is carbon steel, wherein under composition quality percentage composition such as table：C≤0.3, Si≤0.2, Mn≤0.3, P
≤ 0.02, S≤0.015, surplus are iron；
The trade mark of the ferrosilicon presses the FeSi75Al1.0-B of GB2272-2016 standards；
The trade mark of the silicon barium presses the FeBa30Si60 of GB/T15710-1995 standards, and its granularity is 10-50mm；
The trade mark of the silico-calcium presses the Ca30Si60 of GB5051-2016 standards.
The high intensity sulphur oxygen inovulant that the present invention prepares can increase substantially the number of graphite ball in spheroidal graphite cast-iron, can
Improve the intensity and toughness of cast iron, hence it is evident that reduce the chilling tendency of cast iron, improve the Oxygen potential, number of graphite ball and iron of spheroidal graphite cast-iron
Ferritic amount, the contraction during casting is eliminated, the complicated casting of excellent quality can be formed.
Application example of the high intensity sulphur oxygen inovulant in spheroidal graphite cast-iron：
The preparation method of spheroidal graphite cast-iron is as follows：
（1）Burden process：Raw material and the parts by weight of raw materials proportioning of selection are high-purity steel scrap and dragon and phoenix mountain Q10 high-purity pig irons, same to material
Matter foundry returns, permanent profit is come nodulizer Mg8Re3 1-1.4 parts for producing；
（2）Melting process：Melting is carried out using medium-frequency induction furnace, the pig iron, foundry returns are added into electricity by above-mentioned raw materials parts by weight
In stove, melting is carried out, treats that raw material is melting down；Skimmed after 1550-1570 DEG C of molten iron temperature, chemical composition in sampling detection stove, according to
Testing result determines the addition of nodulizer, sulphur oxygen inovulant, Si-Ca-Ba inovulant to be finely adjusted to chemical composition in molten iron；
（3）Spheroidising, inoculation：By step（2）In molten iron come out of the stove to nodularization bag, tapping temperature is 1530-1550 DEG C,
The nodulizer Mg8Re3 of above-mentioned parts by weight is placed at nodularization bag bottom, and the silicon of 0.3-0.8 parts by weight is then covered on nodulizer
Calcium inovulant, by step（2）In molten iron pour into nodularization bag, carry out nodularization, the composition after nodularization is shown in Table 1.
（4）Pour into a mould process：25 millimeters of one piece of Y-shaped ball iron test blocks are poured into a mould, pouring temperature is controlled at 1380-1440 DEG C, cast
Shi Suiliu adds the high intensity sulphur oxygen inovulant of 0.1-0.2 parts by weight, ensures that iron liquid is steadily uninterruptedly filled with cast iron；
（5）Postprocessing working procedures：Casting cools down, and carries out that mechanical castings and optics detect.
This experiment is divided into experimental group and control group, wherein, in step in experimental group（4）Middle addition is 0.1-0.2 weights
The high intensity sulphur oxygen inovulant that the embodiment of the present invention 2 of part produces is measured, control group is in step（4）Middle addition is 0.1-0.2 weights
Angstrom willing sulphur oxygen inovulant of part is measured, other steps are identical with raw material.Wherein essential element C, Si of the medium cast iron of table 1, Mn, P,
S is the result of smelting technology dispensing, and Mg and Re are that cast iron nodulizer addition and sulphur content of base iron determine.Control group and reality
Test influence of the sulphur oxygen inovulant of group to spheroidal graphite cast-iron graphite features parameter and be shown in Table 2.
The graphite nodule number of experimental group and Oxygen potential are above control group as can be seen from Table 2.And pass through mechanics
The test of performance, the intensity of experimental group is 455Mpa, and elongation percentage 21.5%, the intensity of control group is 425Mpa, and elongation percentage is
20.0%, it can be seen that the intensity and toughness of experimental group increase compared with control group.
Further, Fig. 1 is the metallographic structure schematic diagram of experimental group test block, and Fig. 2 is that the metallographic structure of control group test block is shown
It is intended to, as can be seen from Figure 1 the high-sulfur oxygen inovulant of the invention graphite nodule in test block is obvious in bimodal distribution, graphite nodule
Number 250 or so, and as can be seen from Figure 2 angstrom willing sulphur oxygen inovulant part graphite nodule in test block is obvious in bimodal distribution, stone
Tampon number 220 or so.Fig. 3 and Fig. 4 is that 3% nital etch is passed through in the test block of experimental group and control group respectively
Structure is illustrated, it can be seen that the content of pearlite in alloy 3-8% in Fig. 3, warp higher relative to the content of pearlite in alloy 0-5% in Fig. 4
The test of mechanical property is crossed, the extension property for as a result illustrating to have been taken into account spheroidal graphite cast-iron using high intensity sulphur oxygen inovulant is carried again
High spheroidal graphite cast-iron intensity, reaches the purpose of the present invention.
Claims (8)
1. the sulphur oxygen inovulant of a kind of high intensity, it is characterised in that the mass percent of element is contained by the sulphur oxygen inovulant：
Si：70-76%, Ca：0.2-1.0%, Ba：0.3-0.5%, La：1.5-2.0%, Al：0.5-1.5%, S：0.3-0.9%, O：0.3-
0.9%, Sb：0.5-1.5%, surplus are iron；
The sulphur oxygen inovulant is prepared by the raw material of following parts by weight：
Steel scrap 2-4 parts, ferrosilicon 130-140 parts, silicon barium 1-1.4 parts, silico-calcium 1-1.8 parts, pure lanthanum 2-4 parts, antimony 1.5-2.5 parts, FeS
1-2 parts, FeO1-1.4 parts.
2. the sulphur oxygen inovulant of high intensity as claimed in claim 1, it is characterised in that element contained by the sulphur oxygen inovulant
Mass percent is：Si：73%, Ca：0.6%, Ba：0.4%, La：1.75%, Al：1.0%, S：0.3-0.9%, O：0.3-0.9%,
Sb：1.0%, surplus is iron；
The sulphur oxygen inovulant is prepared by the raw material of following parts by weight：
3 parts of steel scrap, 135 parts of ferrosilicon, 1.2 parts of silicon barium, 1.4 parts of silico-calcium, pure 3 parts of lanthanum, 2 parts of antimony, 1.2 parts of 1.5 parts of FeS, FeO.
3. the sulphur oxygen inovulant of the high intensity as described in claim any one of 1-2, it is characterised in that the steel scrap is carbon
Steel, wherein composition quality percentage composition are as follows：C≤0.3, Si≤0.2, Mn≤0.3, P≤0.02, S≤0.015, surplus are iron.
4. the sulphur oxygen inovulant of the high intensity as described in claim any one of 1-2, it is characterised in that the trade mark of the ferrosilicon is pressed
The FeSi75Al1.0-A or FeSi75Al1.0-B of GB2272-2009 standards.
5. the sulphur oxygen inovulant of the high intensity as described in claim any one of 1-2, it is characterised in that the trade mark of the silicon barium is pressed
The FeBa30Si60 of GB/T15710-1995 standards, its granularity are 10-50mm.
6. the sulphur oxygen inovulant of the high intensity as described in claim any one of 1-2, it is characterised in that the trade mark of the silico-calcium is pressed
The Ca30Si60 of GB5051-2016 standards.
7. the preparation technology of the sulphur oxygen inovulant of the high intensity as described in claim any one of 1-6, it is characterised in that including such as
Lower step：
（1）Dispensing：Steel scrap, ferrosilicon, silicon barium, silico-calcium, pure lanthanum, the antimony of above-mentioned parts by weight are weighed, is mixed；
（2）Melting：By above-mentioned raw materials at 1300-1380 DEG C melting 30-40min, then carry out metal mold ingot mould ingot casting, produce
Alloy pig；
（3）Broken, screening：By above-mentioned alloy pig crushing and screening into the grain of ferrosilicon containing lanthanum；
（4）It is blended：By step（3）In the obtained grain of ferrosilicon containing lanthanum mixed with FeS, FeO of above-mentioned parts by weight, 0.5 ~ 1h of stirring,
Produce powder.
8. the preparation technology of the sulphur oxygen inovulant of high intensity as claimed in claim 7, it is characterised in that described ferrosilicon containing lanthanum
The granularity of grain is 0.1-0.7mm or 0.2-0.8mm.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108950120A (en) * | 2018-06-29 | 2018-12-07 | 石家庄北科德瑞冶金材料有限公司 | A kind of cast iron silicon-lanthanum-strontium inovulant and preparation method thereof |
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| CN110983165A (en) * | 2019-12-31 | 2020-04-10 | 三祥新材股份有限公司 | Inoculant for nodular cast iron and preparation method thereof |
| CN111321266A (en) * | 2020-04-28 | 2020-06-23 | 含山县朝霞铸造有限公司 | Spheroidizing inoculation process for nodular cast iron |
| CN112475240A (en) * | 2020-11-26 | 2021-03-12 | 溧阳市万盛铸造有限公司 | Brake head casting method for avoiding edge thin-wall white notch |
| CN113106186A (en) * | 2021-04-21 | 2021-07-13 | 江苏亚峰合金材料有限公司 | Preparation method of inoculant for tough cast iron |
| CN115029495A (en) * | 2022-06-15 | 2022-09-09 | 宜昌佳晟鑫铁合金有限公司 | Pearlite inoculant formula |
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| US11486011B2 (en) | 2017-12-29 | 2022-11-01 | Elkem Asa | Cast iron inoculant and method for production of cast iron inoculant |
| WO2019132669A1 (en) * | 2017-12-29 | 2019-07-04 | Elkem Asa | Cast iron inoculant and method for production of cast iron inoculant |
| US11932913B2 (en) | 2017-12-29 | 2024-03-19 | Elkem Asa | Cast iron inoculant and method for production of cast iron inoculant |
| US11708618B2 (en) | 2017-12-29 | 2023-07-25 | Elkem Asa | Cast iron inoculant and method for production of cast iron inoculant |
| US11486012B2 (en) | 2017-12-29 | 2022-11-01 | Elkem Asa | Cast iron inoculant and method for production of cast iron inoculant |
| US11479828B2 (en) | 2017-12-29 | 2022-10-25 | Elkem Asa | Cast iron inoculant and method for production of cast iron inoculant |
| CN108950120A (en) * | 2018-06-29 | 2018-12-07 | 石家庄北科德瑞冶金材料有限公司 | A kind of cast iron silicon-lanthanum-strontium inovulant and preparation method thereof |
| CN110983165A (en) * | 2019-12-31 | 2020-04-10 | 三祥新材股份有限公司 | Inoculant for nodular cast iron and preparation method thereof |
| CN111321266A (en) * | 2020-04-28 | 2020-06-23 | 含山县朝霞铸造有限公司 | Spheroidizing inoculation process for nodular cast iron |
| CN112475240A (en) * | 2020-11-26 | 2021-03-12 | 溧阳市万盛铸造有限公司 | Brake head casting method for avoiding edge thin-wall white notch |
| CN113106186A (en) * | 2021-04-21 | 2021-07-13 | 江苏亚峰合金材料有限公司 | Preparation method of inoculant for tough cast iron |
| CN115029495A (en) * | 2022-06-15 | 2022-09-09 | 宜昌佳晟鑫铁合金有限公司 | Pearlite inoculant formula |
| CN115896604A (en) * | 2022-11-15 | 2023-04-04 | 宜昌佳晟鑫铁合金有限公司 | Silicon-based inoculant material proportioning method |
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