CN109957632A - A kind of nodulizer - Google Patents
A kind of nodulizer Download PDFInfo
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- CN109957632A CN109957632A CN201910219073.2A CN201910219073A CN109957632A CN 109957632 A CN109957632 A CN 109957632A CN 201910219073 A CN201910219073 A CN 201910219073A CN 109957632 A CN109957632 A CN 109957632A
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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
- C21C1/105—Nodularising additive agents
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Abstract
The present invention relates to spheroidal graphite cast-iron to produce auxiliary agent field, more specifically, it relates to a kind of nodulizer, the component including following mass fraction: magnesium powder: 30-50 parts；Ferrosilicon: 120-160 parts；Rare earth element: 6-12 parts；Calcium: 10-18 parts；Lime stone: 10-15 parts；Lime: 10-15 parts；Carburant: 4-8 parts；Iron powder: 5-10 parts；The rare earth element is yttrium；The particle size range of the ferrosilicon is in 15-20mm, in nodulizer in the lower situation of magnesium content, the desulfidation of nodulizer still can be improved, the sulfur content reduction in molten iron is conducive to anti-decaying spheroidisation, so that the roundness of the globular graphite generated is higher, while being conducive to improve Oxygen potential.
Description
Technical field
The present invention relates to spheroidal graphite cast-iron to produce auxiliary agent field, more specifically, it relates to a kind of nodulizer.
Background technique
Spheroidal graphite cast-iron is that one kind by nodularization and inoculation obtains globular graphite, effectively improves mechanical properties of cast iron,
Plasticity and toughness are especially improved, to obtain the intensity also higher than carbon steel.Mechanical Properties in Ductile Cast Iron is wear-resisting close to steel
Property, damping property be better than steel, be based on its excellent performance, it is complicated to be successfully used to some stress, intensity, toughness, wear-resisting
The more demanding part of property.So-called " with iron Dai Gang ", refers mainly to spheroidal graphite cast-iron.China's spheroidal graphite cast-iron yield is up to 1400 within 2012
Ten thousand tons, the market demand increases year by year.
Nodulizer is the critical material of spheroidal graphite cast-iron production, to the tissue of magnesium iron, performance and stable processing technique, life
Producing cost etc. has significant impact.Although there are many type of domestic and international nodulizer, at home at present using most rare earths
Magnesium class nodulizer.Chinese patent if notification number is CN103194562B discloses a kind of Nodulizing agent for nodular cast iron and its preparation
Method, the mass percent of the Nodulizing agent for nodular cast iron are as follows: Mg:7%-9%, Si:35%-40%, RE:3%-5%, Ca:
1%-1.9%, Ba:1%-2%, Sr:1%-2%, surplus Fe；The preparation method of the Nodulizing agent for nodular cast iron includes following
Step: (1) prepare raw material: matching raw material by the mass percent of above-mentioned Nodulizing agent for nodular cast iron；(2): using layering dress
The mode shove charge of furnace；(3) it melts；(4) alloy molten solution after fusing casting cooling: is poured to cooling in ingot mould；(5) it pelletizes.
Ca, Ba, Sr element substitution rare earth element is added in the present invention, changes the use for applying for that rare earth is reduced under the premise of guaranteeing nodularization effect
Amount, reduces the production cost of nodulizer.
Currently, nodulizer typically contains magnesium, silicon, iron and rare earth element, magnesium has a strong spheroidization ability, one in molten iron
As contain sulphur and oxygen.If magnesium content in nodulizer is high, reaction is fierce, in molten iron residual magnesium amount it is lower and can not in molten iron
Sulphur reacted and play desulfidation so that desulfurization effect be deteriorated, cause nodularization effect bad；But if magnesium in nodulizer
Measure lower, although reacting balance, this nodulizer is weaker to the desulfidation of this molten iron, can also weaken spheroidizing.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of nodulizer, magnesium is contained in nodulizer
It measures in lower situation, the desulfidation of nodulizer still can be improved.
To achieve the above object, the present invention provides the following technical scheme that
A kind of nodulizer, the component including following mass fraction:
Magnesium powder: 30-50 parts；
Ferrosilicon: 120-160 parts；
Rare earth element: 6-12 parts；
Calcium: 10-18 parts；
Lime stone: 10-15 parts；
Lime: 10-15 parts；
Carburant: 4-8 parts；
Iron powder: 5-10 parts；
The rare earth element is yttrium；
The ferrosilicon particle size range is in 15-20mm.
By adopting the above technical scheme, in nodulizer, magnesium powder is as the strongest element of spheroidizing in nodulizer, to molten iron
In graphite play spheroidizing；Magnesium be added molten iron when can when molten iron seethe, react it is uniform up and down, be not easy it in molten iron
It is floating, advantageously reduce the oxidation and scaling loss of magnesium；Silicon reacts to form silica under conditions of high temperature with oxygen, silica
Fluxing action is played in nodulizer, after nodulizer is put into molten iron, silica is conducive to reinforce the melting of nodulizer
Speed, and then be conducive to improve nodularization efficiency；Calcium, lime stone and lime form desulfurizing agent, and desulfurization work is played in nodulizer
With first, the chemical property of calcium is more active compared with magnesium, thus the affinity of calcium and oxygen and sulphur is stronger, when nodulizer is put into
When in molten iron, calcium promotes lime and the first sulphur and oxygen with molten iron of lime stone cooperation first to react, and then plays oxygen uptake desulfurization
Effect, under the action of carburant, it is ensured that reducing atmosphere when desulfurization is conducive to calcium, lime stone and lime and is inhaled
Oxygen desulfurization, thus can make nodulizer in the case where magnesium amount is not high, and the desulfidation of nodulizer, containing in molten iron still can be improved
Sulfur content reduction is conducive to anti-decaying spheroidisation, so that the roundness of the globular graphite generated is higher；Further, calcium is added to be conducive to
The content of magnesia in molten iron is reduced, the spheroidizing reacion for being conducive to nodulizer is more steady, second, calcium also has spheroidization ability,
The spheroidizing for being conducive to improve nodulizer, can also reduce chilling tendency；By the way that carburant is added into nodulizer, when by ball
When agent is put into molten iron, there are the heterogeneous crystallization nuclei of a large amount of Dispersed precipitates after molten iron carburetting, graphite crystal nucleus significantly increases
It is more, it may advantageously facilitate graphite and formed, be conducive to the toughness for improving the magnesium iron produced, while reducing the degree of supercooling spoken parts in traditional operas of molten iron
Tendency；By the way that rare earth element yttrium is added, due to itself fusing point height, the product that deoxidation sulphur removal generates is relatively more steady at high temperature
It is fixed, therefore the ability of anti-decaying spheroidisation is stronger, is conducive to generate the higher globular graphite of roundness.
Further, the nodulizer further includes the component of following mass fraction:
Alkalescent phenol resin: 3-6 parts；
Silane coupling agent: 3-6 parts.
By adopting the above technical scheme, alkalescent phenol resin plays adhesive effect in nodulizer, in cooperation silane coupling agent
Under the action of, the other components of nodulizer can be promoted to be bonded, be conducive to the production efficiency for improving nodulizer.
Further, the carburant is graphite carburant.
By adopting the above technical scheme, carburant be graphite carburant, the graphite carburant that the application uses for artificial graphite,
Artificial graphite has the advantages that phosphorus content is high, and artificial graphite is all chip, waste and old electrode and the graphite block when manufacturing graphite electrode
Etc. the material recycled, production cost is advantageously reduced.
Further, the granularity of the carburant is 0.5mm-1mm.
Further, the range of the granularity of the carburant is 0.75mm.
It by adopting the above technical scheme, the use of the carburetting process of carburant include dissolution diffusion process and oxidation loss process.
The granule size of carburant is different, and it is also just different to dissolve diffusion velocity and oxidation loss speed.And the height of carburant absorptivity
It is dependent on the comprehensive function of carburant dissolution diffusion velocity and oxidation loss speed, when the granularity of carburant is less than 0.5mm,
Solution rate is fast, and loss rate is big；When the granularity of carburant is greater than 1mm, solution rate is slow, and loss rate is small, works as carburant
Granularity in 0.5mm-1mm within the scope of this, the dissolution diffusion velocity and oxidation loss speed of carburant more balance, and work as increasing
When the granularity of carbon agent is preferably 0.75mm, the solution rate of carburant is very fast, and loss rate is smaller, and carburant is obtained
Reasonable employment, while being conducive to improve nodulizer production efficiency.
Further, the nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing the nodulizer are deployed；
(2) melting: after reaction kettle is heated to 900 DEG C, being firstly added silicon, and magnesium powder is secondly added, is eventually adding lime, stone
Lime stone, calcium, carburant, iron powder, rare earth element, alkalescent phenol resin and silane coupling agent mixing；
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, is then utilized
Inserted link made of the round steel or screw-thread steel of φ 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts；
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould；
(4) it pelletizes: broken granulation will be carried out through overcooled alloy in step (3).
Further, the smelting time in the step (2) is between 40 minutes to 50 minutes.
Further, the smelting time in the step (2) is 50 minutes.
By adopting the above technical scheme, if the raw material in furnace body is not completely melt since the time of melting was less than 40 minutes, if
Smelting time is greater than 50 minutes, be easy to cause the scaling loss amount of magnesium higher, and smelting time guaranteed that raw material is complete between 40-50 minutes
The scaling loss amount of running down and magnesium will not be higher；Smelting time is preferably 45 minutes, under conditions of ensuring that raw material is completely melt, is had
Conducive to the scaling loss amount for reducing magnesium.
Further, it in the step (4), is tentatively crushed by way of machining, by repeatedly screening
Afterwards, the nodulizer by granularity less than 10 millimeters is elected, and recycles the rotation of ball mill, and the nodulizer is crushed
For powdery nodulizer.
Further, in the step (4), manufactured powdery nodulizer particle size range is at 0.4-0.6 millimeters.
By adopting the above technical scheme, due between the particle of powdery nodulizer gap it is smaller, molten iron is not easy to pierce, and works as iron
When water reaches a certain amount of, alloy just successively melts, to extend the burst time of nodulizer, in addition, spheroidizing reacion is more
It is carried out under iron water amount state, since the distance that nodulizer particle is floated and melted in molten iron is elongated, reduces the escape of magnesium, have
Conducive to the utilization rate for improving magnesium.
In conclusion the invention has the following advantages:
1, in nodulizer, calcium, lime stone and lime form desulfurizing agent, and desulfidation is played in nodulizer, first,
Compared with magnesium, the chemical property of calcium is more active, and thus the affinity of calcium and oxygen and sulphur is stronger, when nodulizer is put into molten iron
When, calcium promotes lime and the first sulphur and oxygen with molten iron of lime stone cooperation first to react, and then plays the role of oxygen uptake desulfurization,
Under the action of carburant, it is ensured that reducing atmosphere when desulfurization is conducive to calcium, lime stone and lime and carries out oxygen uptake desulfurization,
Thus nodulizer can be made in the case where magnesium amount is not high, the desulfidation of nodulizer, the sulfur content in molten iron still can be improved
Reduction is conducive to anti-decaying spheroidisation, so that the roundness of the globular graphite generated is higher；Further, be conducive to by the way that calcium is added
The content of magnesia in molten iron is reduced, the spheroidizing reacion for being conducive to nodulizer is more steady, second, calcium also has spheroidization ability,
The spheroidizing for being conducive to improve nodulizer, can also reduce chilling tendency；
2, alkalescent phenol resin plays adhesive effect in nodulizer, under the action of cooperating silane coupling agent, can promote
The other components of goal agent are bonded, and the production efficiency for improving nodulizer is conducive to；
3, carburant is graphite carburant, has the advantages that phosphorus content is high, when artificial graphite is all manufacture graphite electrode
The material that chip, waste and old electrode and graphite block etc. recycle, advantageously reduces production cost；
It 4, the use of the carburetting process of carburant include dissolution diffusion process and oxidation loss process.The granule size of carburant
It is also just different to dissolve diffusion velocity and oxidation loss speed for difference.And to be dependent on carburant molten for the height of carburant absorptivity
The comprehensive function for solving diffusion velocity and oxidation loss speed, when the granularity of carburant is less than 0.5mm, solution rate is fast, loss
Speed is big；When the granularity of carburant is greater than 1mm, solution rate is slow, and loss rate is small, when the granularity of carburant is in 0.5mm-
1mm is within the scope of this, and the dissolution diffusion velocity and oxidation loss speed of carburant more balance, when the granularity of carburant is preferred
When for 0.75mm, the solution rate of carburant is very fast, and loss rate is smaller, enables carburant to obtain reasonable employment, favorably
In the production efficiency for improving nodulizer；
5, due between the particle of powdery nodulizer gap it is smaller, molten iron is not easy to pierce, when molten iron reaches it is a certain amount of when,
Alloy just successively melts, to extend the burst time of nodulizer, in addition, spheroidizing reacion under more iron water amount state into
Row, since the distance that nodulizer particle is floated and melted in molten iron is elongated, reduces the escape of magnesium, is conducive to the benefit for improving magnesium
With rate, be conducive to the spheroidization ability for improving nodulizer.
Specific embodiment
Invention is further described in detail with reference to embodiments.
Embodiment 1
A kind of nodulizer, the component including following mass fraction:
Magnesium powder: 30 parts；Silicon: 120 parts；Rare earth element: 6 parts；Calcium: 10 parts；Lime stone: 10 parts；Lime: 10 parts；Carburant:
4 parts；Iron powder: 5 parts.
In the present embodiment, rare earth element is yttrium；Carburant is graphite carburant, and the graphite carburant that the application uses is behaved
Graphite is made, the granularity of carburant is 0.5mm.
In the present embodiment, ferrosilicon granularity is 15mm.
Nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing nodulizer are deployed.
(2) melting: after reaction kettle reaction kettle is heated to 900 DEG C, being firstly added 120 parts of silicon, is secondly added 30 parts of magnesium powder,
It is eventually adding 10 parts of lime, 10 parts of lime stone, 10 parts of calcium, 4 parts of carburant, 5 parts of iron powder and 6 parts of rare earth element mixing.
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, is then utilized
Inserted link made of the round steel or screw-thread steel of φ 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts.
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould.
(4) it pelletizes: will be smashed through overcooled alloy with 4 pounds of hammers in step (3), then use broken nodulizer
Hole specification is that 10 millimeters or so of square hole screen is screened, and the nodulizer elected is passed through to the rotation or vibration of ball mill, is made
Medium carries out strong shock, grinding and stirring to raw material, and it is powdery nodulizer that block-like nodulizer, which is crushed,.
In the present embodiment, the smelting time of step (2) is 40 minutes.
Embodiment 2
A kind of nodulizer, the component including following mass fraction:
Magnesium powder: 40 parts；Silicon: 140 parts；Rare earth element: 9 parts；Calcium: 14 parts；Lime stone: 12.5 parts；Lime: 12.5 parts；Increase
Carbon agent: 6 parts；Iron powder: 7.5 parts.
In the present embodiment, rare earth element is yttrium；Carburant is graphite carburant, and the graphite carburant that the application uses is behaved
Graphite is made, the granularity of carburant is 0.75mm.
In the present embodiment, the granularity of ferrosilicon is 17.5mm.
Nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing nodulizer are deployed.
(2) melting: after reaction kettle is heated to 900 DEG C, being firstly added 140 parts of silicon, secondly be added 40 parts of magnesium powder, finally plus
Enter 12.5 parts of lime, 12.5 parts of lime stone, 14 parts of calcium, 6 parts of carburant, 7.5 parts of iron powder and 9 parts of rare earth element mixing.
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, is then utilized
Inserted link made of the round steel or screw-thread steel of φ 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts.
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould.
(4) it pelletizes: will be smashed through overcooled alloy with 4 pounds of hammers in step (3), then use broken nodulizer
Hole specification is that 10 millimeters or so of square hole screen is screened, and the nodulizer elected is passed through to the rotation or vibration of ball mill, is made
Medium carries out strong shock, grinding and stirring to raw material, and it is powdery nodulizer that block-like nodulizer, which is crushed,.
In the present embodiment, the smelting time of step (2) is 45 minutes.
Embodiment 3
A kind of nodulizer, the component including following mass fraction:
Magnesium powder: 50 parts；Silicon: 160 parts；Rare earth element: 12 parts；Calcium: 18 parts；Lime stone: 15 parts；Lime: 15 parts；Carburetting
Agent: 8 parts；Iron powder: 10 parts.
In the present embodiment, rare earth element is yttrium；Carburant is graphite carburant, and the graphite carburant that the application uses is behaved
Graphite is made, the granularity of carburant is 1mm.
In the present embodiment, the granularity of ferrosilicon is 20mm.
Nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing nodulizer are deployed.
(2) melting: after reaction kettle is heated to 900 DEG C, being firstly added 160 parts of silicon, secondly be added 50 parts of magnesium powder, finally plus
Enter 15 parts of lime, 15 parts of lime stone, 18 parts of calcium, 8 parts of carburant, 10 parts of iron powder and 12 parts of rare earth element mixing.
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, is then utilized
Inserted link made of the round steel or screw-thread steel of φ 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts.
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould.
(4) it pelletizes: will be smashed through overcooled alloy with 4 pounds of hammers in step (3), then use broken nodulizer
Hole specification is that 10 millimeters or so of square hole screen is screened, and the nodulizer elected is passed through to the rotation or vibration of ball mill, is made
Medium carries out strong shock, grinding and stirring to raw material, and it is powdery nodulizer that block-like nodulizer, which is crushed,.
In the present embodiment, the smelting time of step (2) is 50 minutes.
Embodiment 4
A kind of nodulizer, the component including following mass fraction:
Magnesium powder: 40 parts；Silicon: 140 parts；Rare earth element: 9 parts；Calcium: 14 parts；Lime stone: 12.5 parts；Lime: 12.5 parts；Increase
Carbon agent: 6 parts；Iron powder: 7.5 parts；Alkalescent phenol resin: 3 parts；Silane coupling agent: 3 parts.
In the present invention, alkalescent phenol resin is using model TJF-302 in Jing Zhou Tai Meng Industry Co., Ltd
Alkalescent phenol resin.
In the present invention, silane coupling agent is using model KH-550 in Guangzhou Zhong Jie Chemical Industry Science Co., Ltd
Gamma-aminopropyl-triethoxy-silane.
In the present embodiment, rare earth element is yttrium；Carburant is graphite carburant, and the graphite carburant that the application uses is behaved
Graphite is made, the granularity of carburant is 0.75mm.
In the present embodiment, the granularity of ferrosilicon is 17.5mm.
Nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing nodulizer are deployed.
(2) melting: after reaction kettle is heated to 900 DEG C, being firstly added 140 parts of silicon, secondly be added 40 parts of magnesium powder, finally plus
Enter 12.5 parts of lime, 12.5 parts of lime stone, 14 parts of calcium, 6 parts of carburant, 7.5 parts of iron powder, 9 parts of rare earth element, alkalescent phenol resin
3 parts and 3 parts of silane coupling agent mixing.
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, is then utilized
Inserted link made of the round steel or screw-thread steel of φ 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts.
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould.
(4) it pelletizes: will be smashed through overcooled alloy with 4 pounds of hammers in step (3), then use broken nodulizer
Hole specification is that 10 millimeters or so of square hole screen is screened, and the nodulizer elected is passed through to the rotation or vibration of ball mill, is made
Medium carries out strong shock, grinding and stirring to raw material, and it is powdery nodulizer that block-like nodulizer, which is crushed,.
In the present embodiment, the smelting time of step (2) is 45 minutes.
Embodiment 5
A kind of nodulizer, the component including following mass fraction:
Magnesium powder: 40 parts；Silicon: 140 parts；Rare earth element: 9 parts；Calcium: 14 parts；Lime stone: 12.5 parts；Lime: 12.5 parts；Increase
Carbon agent: 6 parts；Iron powder: 7.5 parts；Alkalescent phenol resin: 4.5 parts；Silane coupling agent: 4.5 parts.
In the present invention, alkalescent phenol resin is using model TJF-302 in Jing Zhou Tai Meng Industry Co., Ltd
Alkalescent phenol resin.
In the present invention, silane coupling agent is using model KH-550 in Guangzhou Zhong Jie Chemical Industry Science Co., Ltd
Gamma-aminopropyl-triethoxy-silane.
In the present embodiment, rare earth element is yttrium；Carburant is graphite carburant, and the graphite carburant that the application uses is behaved
Graphite is made, the granularity of carburant is 0.75mm.
In the present embodiment, the granularity of ferrosilicon is 17.5mm.
Nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing nodulizer are deployed.
(2) melting: after reaction kettle is heated to 900 DEG C, being firstly added 140 parts of silicon, secondly be added 40 parts of magnesium powder, finally plus
Enter 12.5 parts of lime, 12.5 parts of lime stone, 14 parts of calcium, 6 parts of carburant, 7.5 parts of iron powder, 9 parts of rare earth element, alkalescent phenol resin
4.5 parts and 4.5 parts of silane coupling agent mixing.
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, is then utilized
Inserted link made of the round steel or screw-thread steel of φ 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts.
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould.
(4) it pelletizes: will be smashed through overcooled alloy with 4 pounds of hammers in step (3), then use broken nodulizer
Hole specification is that 10 millimeters or so of square hole screen is screened, and the nodulizer elected is passed through to the rotation or vibration of ball mill, is made
Medium carries out strong shock, grinding and stirring to raw material, and it is powdery nodulizer that block-like nodulizer, which is crushed,.
In the present embodiment, the smelting time of step (2) is 45 minutes.
Embodiment 6
A kind of nodulizer, the component including following mass fraction:
Magnesium powder: 40 parts；Silicon: 140 parts；Rare earth element: 9 parts；Calcium: 14 parts；Lime stone: 12.5 parts；Lime: 12.5 parts；Increase
Carbon agent: 6 parts；Iron powder: 7.5 parts；Alkalescent phenol resin: 6 parts；Silane coupling agent: 6 parts.
In the present invention, alkalescent phenol resin is using model TJF-302 in Jing Zhou Tai Meng Industry Co., Ltd
Alkalescent phenol resin.
In the present invention, silane coupling agent is using model KH-550 in Guangzhou Zhong Jie Chemical Industry Science Co., Ltd
Gamma-aminopropyl-triethoxy-silane.
In the present embodiment, rare earth element is yttrium；Carburant is graphite carburant, and the graphite carburant that the application uses is behaved
Graphite is made, the granularity of carburant is 0.75mm.
In the present embodiment, the granularity of ferrosilicon is 17.5mm.
Nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing nodulizer are deployed.
(2) melting: after reaction kettle is heated to 900 DEG C, being firstly added 140 parts of silicon, secondly be added 40 parts of magnesium powder, finally plus
Enter 12.5 parts of lime, 12.5 parts of lime stone, 14 parts of calcium, 6 parts of carburant, 7.5 parts of iron powder, 9 parts of rare earth element, alkalescent phenol resin
6 parts and 6 parts of silane coupling agent mixing.
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, is then utilized
Inserted link made of the round steel or screw-thread steel of φ 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts.
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould.
(4) it pelletizes: will be smashed through overcooled alloy with 4 pounds of hammers in step (3), then use broken nodulizer
Hole specification is that 10 millimeters or so of square hole screen is screened, and the nodulizer elected is passed through to the rotation or vibration of ball mill, is made
Medium carries out strong shock, grinding and stirring to raw material, and it is powdery nodulizer that block-like nodulizer, which is crushed,.
In the present embodiment, the smelting time of step (2) is 45 minutes.
Embodiment 7
A kind of nodulizer, the component including following mass fraction:
Magnesium powder: 40 parts；Silicon: 140 parts；Rare earth element: 9 parts；Calcium: 14 parts；Lime stone: 12.5 parts；Lime: 12.5 parts；Increase
Carbon agent: 6 parts；Iron powder: 7.5 parts；Alkalescent phenol resin: 4.5 parts；Silane coupling agent: 4.5 parts.
In the present invention, alkalescent phenol resin is using model TJF-302 in Jing Zhou Tai Meng Industry Co., Ltd
Alkalescent phenol resin.
In the present invention, silane coupling agent is using model KH-550 in Guangzhou Zhong Jie Chemical Industry Science Co., Ltd
Gamma-aminopropyl-triethoxy-silane.
In the present embodiment, rare earth element is yttrium；Carburant is graphite carburant, and the graphite carburant that the application uses is behaved
Graphite is made, the granularity of carburant is 0.75mm.
In the present embodiment, the granularity of ferrosilicon is 17.5mm.
Nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing nodulizer are deployed.
(2) melting: after reaction kettle is heated to 900 DEG C, being firstly added 140 parts of silicon, secondly be added 40 parts of magnesium powder, finally plus
Enter 12.5 parts of lime, 12.5 parts of lime stone, 14 parts of calcium, 6 parts of carburant, 7.5 parts of iron powder, 9 parts of rare earth element, alkalescent phenol resin
4.5 parts and 4.5 parts of silane coupling agent mixing.
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, is then utilized
Inserted link made of the round steel or screw-thread steel of φ 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts.
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould.
(4) it pelletizes: will be smashed through overcooled alloy with 4 pounds of hammers in step (3), then use broken nodulizer
Hole specification is that 10 millimeters or so of square hole screen is screened, and the nodulizer elected is passed through to the rotation or vibration of ball mill, is made
Medium carries out strong shock, grinding and stirring to raw material, and it is powdery nodulizer that block-like nodulizer, which is crushed,.
In the present embodiment, the smelting time in step (2) is 45 minutes.
In the present embodiment, the grain diameter of nodulizer is 0.4 millimeter in step (4).
Embodiment 8
A kind of nodulizer, the component including following mass fraction:
Magnesium powder: 40 parts；Silicon: 140 parts；Rare earth element: 9 parts；Calcium: 14 parts；Lime stone: 12.5 parts；Lime: 12.5 parts；Increase
Carbon agent: 6 parts；Iron powder: 7.5 parts；Alkalescent phenol resin: 4.5 parts；Silane coupling agent: 4.5 parts.
In the present invention, alkalescent phenol resin is using model TJF-302 in Jing Zhou Tai Meng Industry Co., Ltd
Alkalescent phenol resin.
In the present invention, silane coupling agent is using model KH-550 in Guangzhou Zhong Jie Chemical Industry Science Co., Ltd
Gamma-aminopropyl-triethoxy-silane.
In the present embodiment, rare earth element is yttrium；Carburant is graphite carburant, and the graphite carburant that the application uses is behaved
Graphite is made, the granularity of carburant is 0.75mm.
In the present embodiment, the granularity of ferrosilicon is 17.5mm.
Nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing nodulizer are deployed
(2) melting: after reaction kettle is heated to 900 DEG C, being firstly added 140 parts of silicon, secondly be added 40 parts of magnesium powder, finally plus
Enter 12.5 parts of lime, 12.5 parts of lime stone, 14 parts of calcium, 6 parts of carburant, 7.5 parts of iron powder, 9 parts of rare earth element, alkalescent phenol resin
4.5 parts and 4.5 parts of silane coupling agent mixing；
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, is then utilized
Inserted link made of the round steel or screw-thread steel of φ 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts.
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould.
(4) it pelletizes: will be smashed through overcooled alloy with 4 pounds of hammers in step (3), then use broken nodulizer
Hole specification is that 10 millimeters or so of square hole screen is screened, and the nodulizer elected is passed through to the rotation or vibration of ball mill, is made
Medium carries out strong shock, grinding and stirring to raw material, and it is powdery nodulizer that block-like nodulizer, which is crushed,.
In the present embodiment, the smelting time in step (2) is 45 minutes.
In the present embodiment, the grain diameter of nodulizer is 0.5 millimeter in step (4).
Embodiment 9
A kind of nodulizer, the component including following mass fraction:
Magnesium powder: 40 parts；Silicon: 140 parts；Rare earth element: 9 parts；Calcium: 14 parts；Lime stone: 12.5 parts；Lime: 12.5 parts；Increase
Carbon agent: 6 parts；Iron powder: 7.5 parts；Alkalescent phenol resin: 4.5 parts；Silane coupling agent: 4.5 parts.
In the present invention, alkalescent phenol resin is using model TJF-302 in Jing Zhou Tai Meng Industry Co., Ltd
Alkalescent phenol resin.
In the present invention, silane coupling agent is using model KH-550 in Guangzhou Zhong Jie Chemical Industry Science Co., Ltd
Gamma-aminopropyl-triethoxy-silane.
In the present embodiment, rare earth element is yttrium；Carburant is graphite carburant, and the graphite carburant that the application uses is behaved
Graphite is made, the granularity of carburant is 0.75mm.
In the present embodiment, the granularity of ferrosilicon is 17.5mm.
Nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing nodulizer are deployed.
(2) melting: after reaction kettle is heated to 900 DEG C, being firstly added 140 parts of silicon, secondly be added 40 parts of magnesium powder, finally plus
Enter 12.5 parts of lime, 12.5 parts of lime stone, 14 parts of calcium, 6 parts of carburant, 7.5 parts of iron powder, 9 parts of rare earth element, alkalescent phenol resin
4.5 parts and 4.5 parts of silane coupling agent mixing.
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, is then utilized
Inserted link made of the round steel or screw-thread steel of φ 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts.
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould.
(4) it pelletizes: will be smashed through overcooled alloy with 4 pounds of hammers in step (3), then use broken nodulizer
Hole specification is that 10 millimeters or so of square hole screen is screened, and the nodulizer elected is passed through to the rotation or vibration of ball mill, is made
Medium carries out strong shock, grinding and stirring to raw material, and it is powdery nodulizer that block-like nodulizer, which is crushed,.
In the present embodiment, the smelting time in step (2) is 45 minutes.
In the present embodiment, the grain diameter of nodulizer is 0.6 millimeter in step (4).
Comparative example 1
The Chinese patent document that following nodulizer component is CN103194562B from Authorization Notice No..
The nodulizer, including following mass percent:
Mg:8 parts, Si:38 parts, RE:4 parts, Ca:1.9 parts, Ba:2 parts, Sr:2 parts, Fe:44.1 parts.
(1) prepare raw material according to above-mentioned raw material and its parts by weight.
Wherein, Mg element is selected from MAG block, and Si element and other elements are selected from ferrosilicon, foundry return and rare earth ferrosilicon alloy.
(2) shove charge: by the way of being layered shove charge, rare earth ferrosilicon alloy is first occupied one layer in furnace bottom, ferrosilicon is covered
On rare earth ferrosilicon alloy, then MAG block is gathered and is placed on above ferrosilicon middle position, foundry return is finally covered on MAG block
Above, and by MAG block surrounding it fills up.
(3) it melts: quickly heating, in heating process, plug in pricker furnace charge top surface with drill rod, the ferrosilicon to the covering of MAG block surface is in
Shiny red and when starting to adhere to drill rod, stirring covers a small amount of ferrosilicon on surface and continues to heat up, stir if alloy is sticky after stirring
It mixes, operates according to this, until alloy molten solution is no longer sticky and is all added to remaining ferrosilicon in furnace several times.
(4) alloy molten solution after fusing: being poured cooling by casting cooling in ingot mould, and ingot mould used makes when being used continuously
Pressure cooling, and ingot mould wall thickness: ingot mould thickness >=1:1 should be carried out before.
(5) it pelletizes: broken granulation will be carried out through overcooled alloy in step (4).
Comparative example 2
A kind of nodulizer, the component including following mass fraction:
Magnesium powder: 40 parts；Silicon: 140 parts；Rare earth element: 9 parts；Iron powder: 7.5 parts.
Rare earth element is yttrium；Silicon uses silicon content for 75% ferrosilicon, and particle size range is in 17.5mm.
Nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing nodulizer are deployed.
(2) melting: after reaction kettle is heated to 900 DEG C, being firstly added 140 parts of silicon, secondly be added 40 parts of magnesium powder, finally plus
Enter 7.5 parts of iron powder and 9 parts of rare earth element mixing.
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, is then utilized
Inserted link made of the round steel or screw-thread steel of φ 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts.
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould.
(4) it pelletizes: will be smashed through overcooled alloy with 4 pounds of hammers in step (3), then use broken nodulizer
Hole specification is that 10 millimeters or so of square hole screen is screened, and the nodulizer elected is passed through to the rotation or vibration of ball mill, is made
Medium carries out strong shock, grinding and stirring to raw material, and it is powdery nodulizer that block-like nodulizer, which is crushed,.
Wherein, the smelting time of step (2) is 45 minutes.
Comparative example 3
A kind of nodulizer, the component including following mass fraction:
Magnesium powder: 40 parts；Silicon: 140 parts；Rare earth element: 9 parts；Calcium: 5 parts；Lime stone: 5 parts；Lime: 5 parts；Carburant: 3
Part；Iron powder: 7.5 parts.
In the present embodiment, rare earth element is yttrium；Carburant is graphite carburant, and the graphite carburant that the application uses is behaved
Graphite is made, the granularity of carburant is 0.75mm.
In the present embodiment, the granularity of ferrosilicon is 17.5mm.
Nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing nodulizer are deployed.
(2) melting: after reaction kettle is heated to 900 DEG C, being firstly added 140 parts of silicon, secondly be added 40 parts of magnesium powder, finally plus
Enter 5 parts of lime, 5 parts of lime stone, 5 parts of calcium, 3 parts of carburant, 7.5 parts of iron powder and 9 parts of rare earth element mixing.
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, is then utilized
Inserted link made of the round steel or screw-thread steel of φ 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts.
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould.
(4) it pelletizes: will be smashed through overcooled alloy with 4 pounds of hammers in step (3), then use broken nodulizer
Hole specification is that 10 millimeters or so of square hole screen is screened, and the nodulizer elected is passed through to the rotation or vibration of ball mill, is made
Medium carries out strong shock, grinding and stirring to raw material, and it is powdery nodulizer that block-like nodulizer, which is crushed,.
Wherein, the smelting time of step (2) is 45 minutes.
Comparative example 4
A kind of nodulizer, the component including following mass fraction:
Magnesium powder: 40 parts；Silicon: 140 parts；Rare earth element: 9 parts；Calcium: 23 parts；Lime stone: 20 parts；Lime: 20 parts；Carburant:
12 parts；Iron powder: 7.5 parts.
Rare earth element is yttrium；Carburant is graphite carburant, and the graphite carburant that the application uses is artificial graphite, carburetting
The granularity of agent is 0.75mm.
The granularity of ferrosilicon is 17.5mm.
Nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing nodulizer are deployed.
(2) melting: after reaction kettle is heated to 900 DEG C, being firstly added 140 parts of silicon, secondly be added 40 parts of magnesium powder, finally plus
Enter 20 parts of lime, 20 parts of lime stone, 23 parts of calcium, 12 parts of carburant, 7.5 parts of iron powder and 9 parts of rare earth element mixing.
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, is then utilized
Inserted link made of the round steel or screw-thread steel of φ 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts.
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould.
(4) it pelletizes: will be smashed through overcooled alloy with 4 pounds of hammers in step (3), then use broken nodulizer
Hole specification is that 10 millimeters or so of square hole screen is screened, and the nodulizer elected is passed through to the rotation or vibration of ball mill, is made
Medium carries out strong shock, grinding and stirring to raw material, and it is powdery nodulizer that block-like nodulizer, which is crushed,.
Wherein, the smelting time of step (2) is 45 minutes.
The detection data part table 1-6 of each embodiment and comparative example.
Experiment 1
Before preparing spheroidal graphite cast-iron using the nodulizer of the application, measures the sulfur content a in molten iron and record related data.
Experiment 2
After experiment 1, the sulfur content b in molten iron is measured, record related data and calculates desulfurization degree c=(a-b)/a.
Experiment 3
The spheroidal graphite cast-iron that the trade mark is QT400-18 is prepared using the nodulizer of the application, according to GB/T1348-2009 " spheroidal graphite
Cast-iron body " standard, test the Oxygen potential (%) of spheroidal graphite cast-iron.
1 embodiment 1- embodiment 9 of table carry out experiment 1- experiment 3 measurement cast iron meltings before and after sulfur content, desulfurization degree and
Oxygen potential detection data
2 comparative example 1- comparative example 4 of table carry out experiment 1- experiment 3 measurement cast iron meltings before and after sulfur content, desulfurization degree and
Oxygen potential detection data
Experiment 4
The spheroidal graphite cast-iron that the trade mark is QT400-18 is prepared using the nodulizer of the application, using GB/T228-2002 " metal
Material-tensile test at room temperature ", the tensile strength (N/mm of detection test spheroidal graphite cast-iron2), yield strength (N/mm2) and elongation percentage
(%).
Experiment 5
The spheroidal graphite cast-iron that the trade mark is QT400-18 is prepared using the nodulizer of the application, according to GB/T229-2007 " metal
Material-Charpy pendulum impact test method " standard, single casting test block V-notch sample shock-testing record is carried out to spheroidal graphite cast-iron
Room temperature impact toughness (the J/cm of spheroidal graphite cast-iron2) average value and low temperature (- 20 ± 2 DEG C) impact toughness (J/cm2) be averaged
Value.
3 embodiment 1- embodiment 9 of table carries out experiment 4 and experiment 5 measures the physical property detection of QT400-18 spheroidal graphite cast-iron
Data
4 comparative example 1- comparative example 4 of table carries out experiment 4 and experiment 5 measures the physical property detection of QT400-18 spheroidal graphite cast-iron
Data
Experiment 6
Nodulizer raw material, material content, melting utensil and smelting temperature under the same conditions, measurement production nodulizer
Production efficiency (%).
5 embodiment 1- embodiment 9 of table carries out the nodulizer production efficiency test data of 6 measurement of experiment
| Production efficiency (%) | |
| Embodiment 1 | 90.1 |
| Embodiment 2 | 90.3 |
| Embodiment 3 | 90.6 |
| Embodiment 4 | 92.4 |
| Embodiment 5 | 95.6 |
| Embodiment 6 | 96.4 |
| Embodiment 7 | 93.4 |
| Embodiment 8 | 94.6 |
| Embodiment 9 | 95.5 |
6 comparative example 1- comparative example 4 of table carries out the nodulizer production efficiency test data of 6 measurement of experiment
| Production efficiency (%) | |
| Comparative example 1 | 89.9 |
| Comparative example 2 | 90.0 |
| Comparative example 3 | 89.4 |
| Comparative example 4 | 89.0 |
It can be obtained according to the data of embodiment 1-3 in table 1-4 and comparative example 1-2, calcium, lime stone and lime form desulfurization
Desulfidation is played in agent in nodulizer, first, the chemical property of calcium is more active compared with magnesium, thus calcium and oxygen and sulphur
Affinity is stronger, and when nodulizer is put into molten iron, calcium promotes lime and lime stone cooperation first and sulphur and oxygen in molten iron
It first reacts, and then plays the role of oxygen uptake desulfurization, while reducing sulphur to the consumption of magnesium, more magnesium is enabled to play nodularization work
With；Meanwhile the content that calcium advantageously reduces magnesia in molten iron is added, the spheroidizing reacion for being conducive to nodulizer is more steady；Its
Two, under the action of carburant, it is ensured that it is de- to be conducive to calcium, lime stone and lime progress oxygen uptake for reducing atmosphere when desulfurization
Sulphur, thus can make nodulizer in the case where magnesium amount is not high, and the desulfidation of nodulizer, the sulfur-bearing in molten iron still can be improved
Amount, which reduces, is conducive to anti-decaying spheroidisation, so that the roundness of the globular graphite generated is higher, while improving the anti-of nodular iron casting
Tensile strength and elongation percentage；Third, the spheroidization ability of calcium is stronger, is conducive to the spheroidizing for improving nodulizer, improves Oxygen potential,
Chilling tendency can also be reduced.
It can be obtained according to the data of embodiment 1-3 in table 1-4 and comparative example 3-4, when calcium, lime stone and the stone in nodulizer
When the amount of ash is too low, the amount of calcium, lime stone and lime is not enough to consume the sulphur in molten iron, when calcium, lime stone and lime quilt
After completely consuming, the sulphur in molten iron is reacted with the magnesium in nodulizer, if the sulfur content at this time in molten iron is still very high, nodularization
Magnesium in agent is easy largely to be consumed, so that the content of magnesium that can play spheroidizing in nodulizer reduces, and then affects nodulizer
Nodularization effect, and influence Oxygen potential to a certain extent；When the amount of calcium, lime stone and lime in nodulizer is excessively high,
After the reaction of Salmon-Saxl in calcium, lime stone and lime and molten iron in nodulizer, remaining calcium plays spheroidizing, to a certain degree
On be conducive to improve Oxygen potential, but if the residual volume of calcium is excessively high, be easy so that the spoken parts in traditional operas for the spheroidal graphite cast-iron produced is inclined
To increasing, it is unfavorable for subsequent to spheroidal graphite cast-iron processing.
It can be obtained according to the data of embodiment 4-6 in table 1-6, alkalescent phenol resin plays adhesive effect in nodulizer,
Under the action of cooperating silane coupling agent, the other components of nodulizer can be promoted to be bonded, be conducive to the life for improving nodulizer
Efficiency is produced, in addition, not sulfurizing and phosphorus in alkalescent phenol resin, is thus contained the sulphur in molten iron will not be increased during cast iron
The defects of measuring, sulphur and phosphorus avoided to cause bad structure of cast iron, stomata, crackle to a certain extent.
It can be obtained according to the data of embodiment 7-9 in table 1-4, since gap is smaller between the particle of powdery nodulizer, molten iron
Be not easy to pierce, when molten iron reaches it is a certain amount of when, alloy just successively melts, to extend the burst time of nodulizer, in addition, ball
Change reaction to carry out under more iron water amount state, since the distance that nodulizer particle is floated and melted in molten iron is elongated, subtract
The small escape of magnesium is conducive to the utilization rate for improving magnesium, is conducive to the spheroidization ability for improving nodulizer, so that tensile strength, bending
It takes intensity and elongation percentage improves, while the absorptivity of nodulizer can reach 60% or more, meet environmental requirements.
Above-described embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
It can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as in this hair
All by the protection of Patent Law in bright scope of the claims.
Claims (10)
1. a kind of nodulizer, it is characterized in that: including the component of following mass fraction:
Magnesium powder: 30-50 parts；
Ferrosilicon: 120-160 parts；
Rare earth element: 6-12 parts；
Calcium: 10-18 parts；
Lime stone: 10-15 parts；
Lime: 10-15 parts；
Carburant: 4-8 parts；
Iron powder: 5-10 parts；
The rare earth element is yttrium；
The ferrosilicon particle size range is in 15-20mm.
2. a kind of nodulizer according to claim 1, it is characterized in that: the nodulizer further includes following mass fraction
Component:
Alkalescent phenol resin: 3-6 parts；
Silane coupling agent: 3-6 parts.
3. a kind of nodulizer according to claim 1, it is characterized in that: the carburant is graphite carburant.
4. a kind of nodulizer according to claim 1, it is characterized in that: the granularity of the carburant is 0.5mm-1mm.
5. a kind of nodulizer according to claim 4, it is characterized in that: the range of the granularity of the carburant is
0.75mm。
6. a kind of nodulizer according to claim 1, it is characterized in that: the nodulizer preparation step is as follows:
(1) prepare raw material: the component and mass fraction for preparing the nodulizer are deployed；
(2) melting: after reaction kettle is heated to 900 DEG C, being firstly added silicon, and magnesium powder is secondly added, is eventually adding lime, lime
Stone, calcium, carburant, iron powder, rare earth element, alkalescent phenol resin and silane coupling agent mixing；
Reaction kettle power is adjusted to 175KW, after magnesium powder is completely melt, reaction kettle power is adjusted to 160KW, then utilizes φ
Inserted link made of the round steel or screw-thread steel of 18- φ 22 is every 3-6 minutes plug in prickers once until raw material all melts；
(3) alloy molten solution after step (2) fusing casting cooling: is poured cooling in ingot mould；
(4) it pelletizes: broken granulation will be carried out through overcooled alloy in step (3).
7. a kind of nodulizer according to claim 6, it is characterized in that: the smelting time in the step (2) was at 40 minutes
To between 50 minutes.
8. a kind of nodulizer according to claim 7, it is characterized in that: the smelting time in the step (2) is 50 minutes.
9. a kind of nodulizer according to claim 6, it is characterized in that: in the step (4), by way of machining
Tentatively be crushed, after repeatedly screening, the nodulizer by granularity less than 10 millimeters is elected, and recycles ball mill
Rotation, it is powdery nodulizer that the nodulizer, which is crushed,.
10. a kind of nodulizer according to claim 9, it is characterized in that: in the step (4), manufactured powdery nodularization
Agent particle size range is at 0.4-0.6 millimeters.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846205A (en) * | 2021-10-10 | 2021-12-28 | 济南市酉金工贸有限公司 | Spheroidized filament and preparation method thereof |
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| JPS5399022A (en) * | 1977-02-10 | 1978-08-30 | Japan Metals & Chem Co Ltd | Additive for steel |
| CN1427086A (en) * | 2001-12-21 | 2003-07-02 | 包头文鑫实业有限公司 | High efficiency environmental protection nodulizer and its preparation method |
| CN102094102A (en) * | 2009-12-15 | 2011-06-15 | 宁波康发铸造有限公司 | Method for casting nodular cast iron with large section |
| CN102373361A (en) * | 2010-08-20 | 2012-03-14 | 沈阳福铝科技有限公司 | Method for extending initiation time of nodulizer, environment-friendly nodulizer and preparation method thereof |
| CN103194562A (en) * | 2013-04-03 | 2013-07-10 | 山东汇丰铸造科技股份有限公司 | Nodulizing agent for nodular cast iron and preparation method of nodulizing agent |
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2019
- 2019-03-21 CN CN201910219073.2A patent/CN109957632A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5399022A (en) * | 1977-02-10 | 1978-08-30 | Japan Metals & Chem Co Ltd | Additive for steel |
| CN1427086A (en) * | 2001-12-21 | 2003-07-02 | 包头文鑫实业有限公司 | High efficiency environmental protection nodulizer and its preparation method |
| CN102094102A (en) * | 2009-12-15 | 2011-06-15 | 宁波康发铸造有限公司 | Method for casting nodular cast iron with large section |
| CN102373361A (en) * | 2010-08-20 | 2012-03-14 | 沈阳福铝科技有限公司 | Method for extending initiation time of nodulizer, environment-friendly nodulizer and preparation method thereof |
| CN103194562A (en) * | 2013-04-03 | 2013-07-10 | 山东汇丰铸造科技股份有限公司 | Nodulizing agent for nodular cast iron and preparation method of nodulizing agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113846205A (en) * | 2021-10-10 | 2021-12-28 | 济南市酉金工贸有限公司 | Spheroidized filament and preparation method thereof |
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Application publication date: 20190702 |