CN107532225A - Iron metal liquation processing method - Google Patents
Iron metal liquation processing method Download PDFInfo
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- CN107532225A CN107532225A CN201680028691.3A CN201680028691A CN107532225A CN 107532225 A CN107532225 A CN 107532225A CN 201680028691 A CN201680028691 A CN 201680028691A CN 107532225 A CN107532225 A CN 107532225A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/20—Measures not previously mentioned for influencing the grain structure or texture; Selection of compositions therefor
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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
-
- 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
- C21C1/105—Nodularising additive agents
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D5/00—Heat treatments of cast-iron
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Iron metal liquation processing method, this method include following processes：As inovulant, using the Si comprising 15 ~ 80 weight %, it is used as either one in the RE weight % of purity 80 ~ 100 La or the weight % of purity 80 ~ 100 Ce, Ca and Al, the inovulant that surplus is made up of Fe and inevitable impurity, so that each component element relative to iron metal liquation addition for 0.001 ~ 0.009 weight % La or Ce, 0.001 ~ 0.02 weight % Ca, 0.001 ~ 0.02 weight % Al mode, the inovulant is added in the molten metal, inoculation thus is carried out to the molten metal of the cast iron.
Description
Technical field
The present invention relates to the molten metal processing method of cast iron (including both nodular cast iron and flake graphite cast iron).
The molten metal processing method includes：Especially effective in improving heavy wall (nodular cast iron, flake graphite cast iron)
The inoculation of engineering properties.
Background technology
In the casting of nodular cast iron and flake graphite cast iron, what is generally carried out is：By in self-thermo furnace to pouring
In bag release when, from casting ladle pour into a mould into casting mold when etc. to molten metal progress inoculation, to improve the machinery of Cast Iron Products
Property (tensile strength, elongation).
In heavy wall product, due to causing the eutectic freezing time of graphite partial crystallization elongated, therefore it is different in metal structure
The easy partial crystallization of Chang Shimo or thick graphite.The partial crystallization of abnormal graphite or thick graphite can cause the tensile strength of cast iron to reduce.
In ferrite nodular cast iron, the partial crystallization of abnormal graphite or thick graphite can cause the elongation of material to significantly reduce.
The partial crystallization of abnormal graphite and thick graphite can avoid eutectic cell increase by carrying out suitable inoculation.
With the increase of eutectic cell, graphite grain number and the increase of graphite nodule rate, micro- in flake graphite cast iron in nodular cast iron
The formation for seeing A type graphite is promoted, and any situation can improve engineering properties.
The situation of the Cast Iron Products of thin-walled is compared in casting, it is well known that：In casting ladle or pouring box, using to Fe-Si
The inovulant that addition Ca (calcium), Al (aluminium), Ba (barium), Bi (bismuth) etc. are formed in (ferrosilicon) carries out inoculation.
As described above, the eutectic freezing time is elongated when casting heavy wall product.Therefore, if will include not only has altogether
The increasing action of colony and Ca, Al, Ba, Bi etc. with graphitization facilitation common inovulant are used for heavy wall
In the casting of product, then abnormal graphite (situation of nodular cast iron is " corynebacterium graphite ") or thick graphite are possible to brilliant
Analysis.That is, it is necessary to increase Eutectic Cell Number when casting heavy wall product, while need to suppress to exceed necessary graphitization.Therefore
Think, as graphite nucleation material, preferably using rare earth element.
In the casting of the flake graphite cast iron product of heavy wall, using can fully meet above-mentioned requirements comprising rare earth member
The molten metal processing method of the inovulant of element is unknown.Remember in patent document 1 (International Publication WO2015/034062A1)
Carry：The nodulizing process of molten metal during the nodular cast iron product of manufacture heavy wall.Method disclosed herein exists
The space further improved in the microcosmicization efficiency of graphite be present.
Prior art literature
Patent document
Patent document 1：International Publication WO2015/034062A1.
The content of the invention
It is an object of the present invention to provide can suppress the partial crystallization of abnormal graphite and thick graphite, suppress engineering properties
The molten metal processing method of reduction, especially inoculation method.
To achieve these goals, in the present invention, by the RE (rare for making the compound in inovulant as graphite nuclei
Earth, rare earth element), Ca (calcium), additions of the Al (aluminium) into molten metal optimize, to suppress due to the graphite of excess
Change effect and abnormal graphite, the thick graphite of partial crystallization.
It is (hreinafter referred to as " pregnant as graphite inovulant in the inoculation method according to an embodiment of the invention
Educate agent "), using comprising either one in 15 ~ 80% Si, La (lanthanum) or Ce (cerium), Ca and Al, surplus is by Fe (iron) and can not
The inovulant that the impurity avoided is formed, so that each component element is RE (La or Ce) relative to the addition of molten metal：0.001
~0.009%、Ca：0.001~0.02%、Al：The inovulant is added in molten metal by 0.001 ~ 0.02% mode.Need to illustrate
, in this specification, represent that the percentage of content or addition refers both to weight % in case of no particular description.
In the eutectic freezing time reaches more than 1.0ks heavy wall, RE, Ca and Al show graphitizing, help
The partial crystallization of long abnormal graphite or thick graphite.But by the way that RE, Ca and Al addition are optimized as described above and individually
Using La or Ce as RE, the partial crystallization of abnormal graphite and thick graphite can be suppressed.
If Ca, Al addition are excessive, not only encourage the partial crystallization of abnormal graphite or thick graphite but also encourage slag and float
The generation of slag.But by as described above optimizing Ca, Al addition, the molten metal of cleaning can be obtained, therefore can
To suppress slag inclusion, pin hole etc. are produced on product the defects of.
In addition, as described above, by the way that price is high and the RE of uneasiness addition is remained for price rigidity be suppressed to
It is relatively low, Master Cost can be reduced, and the sensitiveness to price fluctuation can be reduced.
Brief description of the drawings
The organization chart photo of the nodular cast iron of [Fig. 1] embodiments of the invention.
The organization chart photo of the nodular cast iron of [Fig. 2] past case.
The organization chart photo of the flake graphite cast iron of [Fig. 3] embodiments of the invention.
The organization chart photo of the flake graphite cast iron of [Fig. 4] past case.
[Fig. 5] represents the schematic diagram of pouring box method.
[Fig. 6] represents to pour in bag the schematic diagram for breeding method (sandwich method).
[Fig. 7] represents the schematic diagram of line facture.
The pouring box that [Fig. 8] is implemented with representing plyability breeds the schematic diagram with mould cavity inoculation.
The beam that pours that [Fig. 9] is implemented with representing plyability breeds the schematic diagram bred with pouring box.
Embodiment
Hereinafter, the suitable embodiment of the present invention is illustrated.
In heavy wall nodular cast iron and eutectic freezing time reach more than 1.0ks casting piece, by using this hair
Molten metal processing method involved by bright embodiment, especially inoculation method, can suppress as the short of abnormal graphite
The partial crystallization of bar-shaped graphite.
Used inovulant includes 15 ~ 80% Si, as either one in RE La or Ce, Ca and Al, and surplus is by Fe
Formed with inevitable impurity.
Inovulant can be by making RE, Ca and Al of ormal weight (referring to aftermentioned) be melted in Fe-Si alloys (ferrosilicon) metal
It is broken to granulate and make after making the solidification of molten metal in liquation.
By known Fe-Si state diagrams (referring for example to ASM handbooks (ASM HANDBOOK, trade mark or registration mark), volume 3
Deng) understand, make the content of the Si in inovulant for 15 ~ 80% be due to that can increase the Si amount of fusing within the range.In addition,
Si content is more than 80% situation, and other component elements are difficult to fuse into.In addition, make the content of the Si in inovulant for 15 ~
25% or 50 ~ 60%, in terms of the increase amount of fusing into further preferably.
It is not (for example, being referred to as the Ce of " mischmetal " with a variety of RE alloy on RE：La=2：1 alloy) or it is mixed
The form of compound, but only individually addition Ce (cerium) or only individually addition La (lanthanum).By only by Ce or individually appropriate only by La
Addition, can obtain excellent engineering properties.In the case of Ce only is used as into RE, preferably Ce purity is 80 ~ 100 weight %.
In the case of La only is used as into RE, preferably La purity is 80 ~ 100 weight %.Mentioned component provides to be not excluded for following feelings
Condition：Such as the RE added is when being Ce, comprising failing to separate clean La from Ce as inevitable in the RE added
Impurity.
RE is preferably 0.001 ~ 0.009% relative to the addition of molten metal.Feelings of the RE addition less than 0.001%
Shape, the problem of Eutectic Cell Number is reduced is produced in flake graphite cast iron, the spheroidization of graphite obstruction element in nodular cast iron
Neutralising capacity is insufficient and produces the problem of graphite shape deteriorates.Situation of the RE addition more than 0.009%, cast in flake graphite
There is no big harmful effect in iron, but produce in nodular cast iron a large amount of partial crystallizations of corynebacterium graphite as abnormal graphite
Problem.If graphite shape is deteriorated, engineering properties can be caused to reduce.
Ca is preferably 0.001 ~ 0.020% relative to the addition of molten metal, in addition, similarly, Al melts relative to metal
The addition of liquid is preferably 0.001 ~ 0.020%.Graphite nucleation can not fully enter if Ca, Al addition are less than 0.001
OK.In addition, if Ca, Al addition is more than 0.020%, abnormal graphite or the easy partial crystallization of thick graphite, moreover, easily generation
Slag and scum silica frost, the defects of being possible to produce slag inclusion, pin hole in product.
Above-mentioned inovulant uses when can be bred in the stove that will release original liquation (first Soup), in addition,
Can be used for implementing pouring in bag the method that breeds, pouring box method, pour beam breed method, in type method, line facture etc. known institute
There is inoculation method.
It can be suitably employed in pour in bag and breed method, pouring box method, pour beam and breed the inovulant of method in method and type
Form as follows.
Si：30~80%
RE：0.1 ~ 0.6% (the weight % of purity 80 ~ 100 La or Ce)
Ca：0.1~1.3%
Al：0.1~2.0%
Surplus：Fe and inevitable impurity
The composition that the inovulant of line facture can be suitably employed in is as follows.
Si：30~60%
RE：0.3 ~ 1.8% (the weight % of purity 80 ~ 100 La or Ce)
Ca：0.1~6.0%
Al：0.1~6.0%
Surplus：Fe and inevitable impurity
In above-mentioned composition, by being that concentration that is relatively low, making other compositions element is higher by Fe, Si concentration control, even if feeding
Line amount is less can also to realize sufficient pregnant effect, therefore can shorten the inoculation time.
The situation of situation using any inoculation method and the inovulant using any composition, each component element are relative
It is set to as described above in the addition of molten metal.
Mg (magnesium) is free of in inovulant involved by present embodiment.Therefore, the situation of nodular cast iron product is cast,
Spheroidising uses the nodulizer different from the inovulant for above-mentioned inoculation, enters differently before above-mentioned inoculation
OK.Nodulizer for spheroidising can select appropriate substance migration from known nodulizer.But from making to above-mentioned
The influence of inoculation is from the viewpoint of Min., preferably nodulizer is used without RE, Ca, Al person, such as uses Fe-
Si-Mg is (for example, with weight ratio meter Fe：Si：Mg=45：45：10；Or 30：30：20；Or 45：30：5 etc.) nodulizer of system.
Known inoculation passes through the time point at the time point for being as closely as possible to be poured into molten metal in casting mold
Progress can obtain higher effect, and the Mg as the element for contributing to nodularization, ball are not included in present embodiment, in inovulant
Change processing to carry out using there is other nodulizer, after spheroidising, carry out inoculation before it will be poured into a mould into type, thus
Pregnant effect can be improved.
The situation of flake graphite cast iron product is cast, as long as adding above-mentioned inovulant in molten metal.
Fig. 6 represents to pour in bag the schematic diagram for the method that breeds.The situation of method is bred for pouring in bag of generally using mostly,
Inovulant is filled in the reactive channel (bag, pocket) of casting ladle bottom, 1400 ~ 1500 DEG C of original liquation is released into this pours
Inoculation is carried out in bag.
In the molten metal processing of nodular cast iron, above-mentioned inovulant is configured to covering and is filled in reactive channel
Nodulizer surface, it is also possible to the coverture that carries out of the reacting balance for making to make Mg ground.If Mg addition is more, reaction becomes
It is fierce, but by by Ca in above-mentioned optimum range (all relative to molten metal, to be 0.001 ~ 0.02 weight %) interior volumes
Add, carry out while reacting balance can be made.
Fig. 7 represents the schematic diagram of line facture.Inoculation can effectively be carried out in a short time by being handled by line.
Fig. 8 implements pouring box with representing plyability and breeds schematic diagram with mould cavity inoculation.Also can only implement pouring box to breed
Or mould cavity inoculation.Generally, by can will further improve the mechanicalness of moulding to being bred before casting-up
Matter.In addition, as shown in Fig. 9 schematic diagram, it can implement to pour that beam breeds and pouring box breeds with plyability.
In addition, from after self-thermo furnace is released into casting ladle, untill the cast into casting mold terminates during, it is also preferred that will
Into casting ladle the breeding of molten metal, that pouring box breeds, mould cavity inoculation and 2 combination of the above pouring during beam breeds are come is repeatedly right
Molten metal is bred, and by so operating, can further improve the engineering properties of moulding.It should be noted that entering
In the case of row Multi inoculation, make each component element adding up in foregoing scope relative to molten metal.
It is preferred that the above-mentioned inoculation that carried out (situation of nodular cast iron, then in addition to inoculation, is also entered
Row spheroidising) molten metal be poured at 1300 ~ 1400 DEG C in casting mold, by so operating, can obtain with good
The heavy wall moulding of good engineering properties.The shape of moulding is not particularly limited, on involved by above-mentioned embodiment
Inoculation method, in the case of more than 1.0ks wall thickness is reached with the eutectic freezing time, show especially excellent effect
Fruit.In moulding for larger or heavy wall so in the case of the eutectic freezing time becomes longer, it is slightly lower to make cast temperature
1280 ~ 1360 DEG C, this is preferred in terms of the good engineering properties for ensuring moulding.It should be noted that in nodular cast iron
In the case of, preferably spheroidization treatment temperature is 1400 ~ 1500 DEG C.
Embodiment
The inovulant as embodiments of the invention and the inovulant as comparative example is used to carry out flake graphite casting respectively
The casting experiment of iron product and nodular cast iron product.In this experiment, it is designed to being used for for 1.2ks using by the eutectic freezing time
Cast the casting mold of wall thickness 100mm test film.In this way, the eutectic freezing time is longer, then abnormal graphite and thick graphite are easily brilliant
Analysis, therefore it is suitable for the effect that checking is bred.
In an experiment, as previously described, using the inovulant by making as follows：By making ormal weight (after referring to
State) RE, Ca and Al be dissolved in Fe-50%Si alloys (ferrosilicon) molten metal, after making the solidification of molten metal, be broken into
It is granular.Relative to original liquation 30kg, the inovulant is added using pouring box method, makes it relative to molten metal (original liquation)
Addition respectively as described in No.1 ~ 20 of table 1 below.When casting nodular cast iron product, the reactive channel at casting ladle bottom
Bottom configuration different from inovulant nodulizer, spheroidising is carried out in the lump with breeding.No.1, No.11 are without breeding.Having
In the test film bred, Ca addition is any in 0.003%, 0.012%, 0.03%, Al addition is 0.003%,
0.012%th, any in 0.03%, RE addition are any in 0.002%, 0.008%, 0.020%.
The composition of nodular cast iron molten metal is C：3.5~3.7%、Si：2.4~2.6%、Mn：0.5 ~ 1.0%, sheet stone
The composition of black iron metal liquation is C：3.1~3.2%、Si：1.5~1.7%、Mn：0.8~0.9%.
For the test film of gained, tension test is carried out, determines tensile strength and elongation at break, while carry out tissue sight
Examine.
Result of the test is shown in table 1.
[table 1]
No.1 ~ 10 of table 1 are nodular cast iron, No.11 ~ 20 are flake graphite cast iron.No.11 ~ 20 represent flake graphite casting
The engineering properties and condition of iron.
Confirm following content for the tensile strength of nodular cast iron.Without breed situation (No.1), RE Ce
+ La (using mischmetal as RE) situation (No.2 ~ 4) is even and if RE is La independent or the single situations of Ce but RE adds
Dosage is 0.02% situation (No.7,10), and tensile strength is less than 450MPa.But other situations (No.5,6,8,9) are implemented
Example, tensile strength is more than 450MPa.Confirm following content for the elongation of nodular cast iron.Individually addition La or
Individually addition Ce is embodiment for relatively low situation (No.5,6,8,9) as RE, and by the control of RE, Ca, Al addition, is compared
Comparative example (No.1,2 ~ 4,7,10), shows significantly high elongation.
Tensile strength on flake graphite cast iron confirms following content.Any sample shows more than 300MPa
Tensile strength.By being bred, the increase of tensile strength is confirmed.If by RE, Ca, Al addition identical sample that
This is compared, then compared with RE sample is added in the form of mischmetal, individually adds La or individually add Ce as RE
Sample show higher tensile strength.If independent addition La is compared each other as RE sample, with RE, Ca,
The higher sample of Al additions (No.17) is compared, and RE, Ca, Al addition are suppressed into relatively low sample (No.15,16) display
Go out higher tensile strength.If independent addition Ce is compared each other as RE sample, with RE, Ca, Al addition compared with
High sample (No.20) is compared, and RE, Ca, Al addition are suppressed into relatively low sample (No.18,19) shows higher drawing
Stretch intensity.For the elongation of flake graphite cast iron, whether there is breed, RE, Ca, Al addition is almost without result in difference.
Fig. 1 is the embodiment of the nodular cast iron of the present invention, and Fig. 2 is that the organization chart of the nodular cast iron of past case shines
Piece.Fig. 3 is the embodiment of the flake graphite cast iron of the present invention, and Fig. 4 is the organization chart photo of the flake graphite cast iron of past case.It is logical
Cross and bred, the graphite grain number increase of nodular cast iron, the graphite structure of flake graphite cast iron is able to microcosmicization.By making
With the inovulant that RE, Ca, Al are optimised quantity is made, the improvement of tissue can confirm that.
Claims (10)
1. iron metal liquation processing method, this method includes following processes：
As inovulant, using the Si comprising 15 ~ 80 weight %, as RE the weight % of purity 80 ~ 100 La or purity 80 ~ 100
In weight % Ce either one, Ca and Al, the inovulant that surplus is made up of Fe and inevitable impurity so that each composition is first
Element relative to the addition of iron metal liquation be 0.001 ~ 0.009 weight % La or Ce, 0.001 ~ 0.02 weight % Ca,
0.001 ~ 0.02 weight % Al mode, the inovulant is added in the molten metal, thus to the gold of the cast iron
Belong to liquation and carry out inoculation.
2. the iron metal liquation processing method described in claim 1, wherein, the content of the Si in the inovulant for 30 ~
The content that 80%, the weight % of purity 80 ~ 100 La or the weight %Ce of purity 80 ~ 100 content are 0.1 ~ 0.6 weight %, Ca is 0.1 ~
1.3 weight %, Al content is 0.1 ~ 2.0 weight %.
3. the iron metal liquation processing method described in claim 1, wherein, the content of the Si in the inovulant for 30 ~
The content that 60%, the weight % of purity 80 ~ 100 La or the weight %Ce of purity 80 ~ 100 content are 0.3 ~ 1.8 weight %, Ca is 0.1 ~
6.0 weight %, Al content is 0.1 ~ 6.0 weight %.
4. the iron metal liquation processing method described in any one of claim 1 ~ 3, wherein, the inovulant be particle diameter 1 ~
5mm's is granular.
5. the iron metal liquation processing method described in any one of claim 1 ~ 3, wherein, the inovulant is that length is
5 ~ 70mm bulk.
6. the iron metal liquation processing method described in any one of claim 1 ~ 3, wherein, the inovulant is by particle diameter
0.1 ~ 1.0mm grain is formed, and the grain is to be fed into the state for continuously including online core in molten metal.
7. the iron metal liquation processing method described in any one of claim 1 ~ 6, wherein, further comprise using difference
In the process that the other nodulizer of the foregoing inovulant carries out spheroidization of graphite processing, the processing temperature of the spheroidization of graphite processing
Spend for 1400 ~ 1500 DEG C, the pouring temperature into casting mold is 1270 ~ 1370 DEG C.
8. iron metal liquation processing method, wherein, for casting once, usage right is required described in 1 ~ 6 any one
Inovulant, carry out spheroidising and after breeding using the method that breeds is poured in bag, it is any in casting ladle, pouring box, casting mold
More than at one, further bred using once inovulant described above.
9. the iron metal liquation processing method described in claim 8, wherein, will be to casting as the method for carrying out Multi inoculation
Beam breeds, mould cavity inoculation, pouring box breed combination for pouring of being carried out when being poured into a mould in type.
10. the iron metal liquation processing method described in any one of claim 1 ~ 9, wherein, and based on the inovulant
Inoculation dividually use spheroidising agent comprising magnesium to carry out spheroidising.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015100908 | 2015-05-18 | ||
| JP2015-100908 | 2015-05-18 | ||
| PCT/JP2016/064548 WO2016186094A1 (en) | 2015-05-18 | 2016-05-17 | Method for processing molten cast iron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107532225A true CN107532225A (en) | 2018-01-02 |
| CN107532225B CN107532225B (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680028691.3A Active CN107532225B (en) | 2015-05-18 | 2016-05-17 | Molten cast iron treatment method |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20180148805A1 (en) |
| JP (1) | JP6728150B2 (en) |
| KR (1) | KR102107888B1 (en) |
| CN (1) | CN107532225B (en) |
| DE (1) | DE112016002243T5 (en) |
| WO (1) | WO2016186094A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20172064A1 (en) | 2017-12-29 | 2019-07-01 | Elkem Materials | Cast iron inoculant and method for production of cast iron inoculant |
| CN110496958B (en) * | 2019-09-05 | 2023-09-22 | 中船海洋动力部件有限公司 | Inoculating and shunting casting system and inoculating and casting method adopting same |
| CN113278758A (en) * | 2021-04-19 | 2021-08-20 | 成都宏源铸造材料有限公司 | Inoculant for thin-wall ferrite nodular cast iron and preparation method thereof |
| CN113523205B (en) * | 2021-07-06 | 2023-10-13 | 武汉武重铸锻有限公司 | Spheroidizing inoculation method |
| CN114012046B (en) * | 2021-09-29 | 2022-12-27 | 武汉武重铸锻有限公司 | Casting ladle with spheroidizing chamber and inoculation chamber and manufacturing method and using method thereof |
| CN115418556A (en) * | 2022-08-25 | 2022-12-02 | 宁夏新顺成特种合金有限公司 | Inoculant for nodular cast iron and preparation method thereof |
| CN115537643A (en) * | 2022-10-18 | 2022-12-30 | 山东湖西王集团铸业有限公司 | Preparation method and system for stably producing low-temperature impact nodular cast iron in cast state |
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| CN104087819A (en) * | 2014-07-09 | 2014-10-08 | 上海圣德曼铸造有限公司 | As-cast low-temperature strong-toughness ferritic ductile iron material for car steering knuckles and preparation method thereof |
| CN104328239A (en) * | 2014-11-28 | 2015-02-04 | 南通宏德机电有限公司 | Method for improving structure homogeneity and performance of large-section nodular cast iron |
| CN104812922A (en) * | 2012-11-14 | 2015-07-29 | 菲赫贝姆简化股份公司 | Inoculant alloy for thick cast-iron parts |
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| JPS5585616A (en) * | 1978-12-25 | 1980-06-27 | Toyota Motor Corp | Inoculating agent for cast iron |
| JPS63282206A (en) * | 1987-05-15 | 1988-11-18 | Meika Giken Kk | Inoculant for high grade cast iron and inoculating method therefor |
| GB9600807D0 (en) * | 1996-01-16 | 1996-03-20 | Foseco Int | Composition for inoculating low sulphur grey iron |
| NO306169B1 (en) * | 1997-12-08 | 1999-09-27 | Elkem Materials | Cast iron grafting agent and method of making grafting agent |
| US6508981B1 (en) * | 2001-05-24 | 2003-01-21 | Wescast Industries, Inc. | High temperature oxidation resistant ductile iron |
| KR101071767B1 (en) * | 2004-11-29 | 2011-10-11 | 현대자동차주식회사 | Inoculant for manufacturing cast iron |
| KR101708583B1 (en) | 2013-09-06 | 2017-02-20 | 도시바 기카이 가부시키가이샤 | Method for spheroidizing molten metal of spheroidal graphite cast iron |
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2016
- 2016-05-17 JP JP2017519367A patent/JP6728150B2/en active Active
- 2016-05-17 DE DE112016002243.3T patent/DE112016002243T5/en active Pending
- 2016-05-17 WO PCT/JP2016/064548 patent/WO2016186094A1/en active Application Filing
- 2016-05-17 KR KR1020177035909A patent/KR102107888B1/en active IP Right Grant
- 2016-05-17 CN CN201680028691.3A patent/CN107532225B/en active Active
- 2016-05-17 US US15/575,044 patent/US20180148805A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704070A (en) * | 2009-12-16 | 2010-05-12 | 南京铸峰国际贸易有限公司 | Iron silicon lanthanum nucleating agent |
| CN104812922A (en) * | 2012-11-14 | 2015-07-29 | 菲赫贝姆简化股份公司 | Inoculant alloy for thick cast-iron parts |
| CN103614612A (en) * | 2013-12-06 | 2014-03-05 | 郑州机械研究所 | High-strength low stress cast nodular cast iron with high elasticity modulus and manufacturing method thereof |
| CN104087819A (en) * | 2014-07-09 | 2014-10-08 | 上海圣德曼铸造有限公司 | As-cast low-temperature strong-toughness ferritic ductile iron material for car steering knuckles and preparation method thereof |
| CN104328239A (en) * | 2014-11-28 | 2015-02-04 | 南通宏德机电有限公司 | Method for improving structure homogeneity and performance of large-section nodular cast iron |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112016002243T5 (en) | 2018-02-08 |
| JP6728150B2 (en) | 2020-07-22 |
| JPWO2016186094A1 (en) | 2018-04-12 |
| KR20180008612A (en) | 2018-01-24 |
| CN107532225B (en) | 2020-10-23 |
| WO2016186094A1 (en) | 2016-11-24 |
| US20180148805A1 (en) | 2018-05-31 |
| KR102107888B1 (en) | 2020-05-07 |
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