CN105821174A - Preparation method of nano-modified vanadium-nickel ductile cast iron - Google Patents
Preparation method of nano-modified vanadium-nickel ductile cast iron Download PDFInfo
- Publication number
- CN105821174A CN105821174A CN201610182709.7A CN201610182709A CN105821174A CN 105821174 A CN105821174 A CN 105821174A CN 201610182709 A CN201610182709 A CN 201610182709A CN 105821174 A CN105821174 A CN 105821174A
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- China
- Prior art keywords
- iron
- nanometer
- preparation
- molten iron
- casting
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Classifications
-
- 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
-
- 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
- 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
Abstract
The invention discloses a preparation method of nano-modified vanadium-nickel ductile cast iron and relates to the technical field of nano-modified casting. The method comprises steps as follows: vanadium-nickel cast iron is taken as a main raw material, coke, ferromanganese iron, bentonite and a nucleating agent are taken as auxiliary materials, the main raw material and the auxiliary materials are added to an electric furnace for high-temperature melting, when the temperature of molten iron reaches 1,500-1,530 DEG C, pure argon is uniformly blown into the electric furnace by an argon blowing tank for 10-15 min, nano-modifier powder is uniformly blown into the electric furnace by the aid of the argon, a mixture is left to stand for 5-10 min, then is discharged from the furnace and is subjected to casting, a nodulizing agent is added during casting, and after heat treatment, the nano-modified casting is prepared. The prepared nano-modified vanadium-nickel ductile cast iron has better mechanical properties.
Description
Technical field
The present invention relates to nanometer casting techniques field, be specifically related to a kind of nanometer and go bad the preparation side of vanadium nickel spheroidal graphite cast-iron
Method.
Background technology
Spheroidal graphite cast-iron is 20th century a kind of high-strength cast iron materials of growing up of the fifties, its combination property close to
Steel, is based on the performance of its excellence, is successfully used to cast some stress complicated, and intensity, toughness, wearability require higher
Part.Nanometer alterant has high rigidity, high temperature resistant, granularity is little and the feature of good dispersion；With metal, there is preferably knot
Make a concerted effort.The nucleus formed in crystallization process is greatly increased into brilliant quantity and reduces crystallite dimension, reaches crystal grain thinning, improves gold
Belong to material mechanical performance, processing characteristics and the purpose of serviceability.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of nanometer and go bad the preparation of vanadium nickel spheroidal graphite cast-iron
Method.
Present invention solves the technical problem that and can realize by the following technical solutions: a kind of nanometer goes bad the casting of vanadium nickel spheroidal graphite
The preparation method of ferrum, it is characterised in that with the pig iron as primary raw material, with coke, ferromanganese, bentonite, inovulant as adjuvant, adds
In electric furnace, carry out high temperature melting, when molten iron temperature reaches 1500-1530 DEG C, utilize argon winding-up tank to be blown into pure uniformly
Argon 10-15 minute, then utilizes argon to be blown into nanometer alterant powder body uniformly, comes out of the stove, water after standing 5-10 minute
Casting, during casting, adds nodulizer, then through Overheating Treatment, i.e. prepares nanometer and goes bad foundry goods.
Preferably, after described major ingredient and adjuvant mixture, the content of five big elements is: C 3.7-4.0%, Si 2.8-
3.2%, P≤0.06%, Mn 0.1-0.3%, S≤0.02%, the content of vanadium nickel element is: V0.1-0.15%, Ni0.2-
1.0%.
Preferably, described nanometer alterant powder body is made up of Si, SiC mixing, the particle diameter≤400nm of mixture.
Preferably, described nanometer alterant powder body is 1.5-2.0:1000 with the mass ratio of molten iron.
Preferably, described cast temperature is 1380 DEG C-1460 DEG C.
Preferably, during described casting, it is impossible to allow molten iron directly impact nodulizer, when molten iron is put to 2/3, block molten iron, add
Enter nodulizer, after question response, add 1/3 molten iron, cast in 5-10 minute completely.
Provide the benefit that: nanometer prepared by the present invention goes bad vanadium nickel spheroidal graphite cast-iron and do not carry out the casting pig phase that nanometer is rotten
Ratio, has preferable mechanical property.
Detailed description of the invention
The following detailed description of the preferred embodiment of the present invention.
Embodiment 1
A kind of nanometer of the present invention goes bad the detailed description of the invention of preparation method of vanadium nickel spheroidal graphite cast-iron: with the pig iron for the most former
Material, with coke, ferromanganese, bentonite, inovulant as adjuvant, join and electric furnace carry out high temperature melting, when molten iron temperature reaches
When 1500-1530 DEG C, utilize argon winding-up tank to be blown into pure argon gas 10-15 minute uniformly, then utilize argon to blow uniformly
Enter nanometer alterant powder body, come out of the stove after standing 5-10 minute, cast, during casting, add nodulizer, then through Overheating Treatment,
I.e. prepare nanometer to go bad foundry goods.
After described major ingredient and adjuvant mixture, the content of five big elements is: C 3.7-4.0%, Si 2.8-3.2%, P≤
0.06%, Mn 0.1-0.3%, S≤0.02%, the content of vanadium nickel element is: V0.1-0.15%, Ni0.2-1.0%.
Described nanometer alterant powder body is made up of Si, SiC 5:1 in mass ratio mixing, the particle diameter≤400nm of mixture.
Described nanometer alterant powder body is 1.5:1000 with the mass ratio of molten iron.
Described cast temperature is 1380 DEG C-1460 DEG C.
During described casting, it is impossible to allow molten iron directly impact nodulizer, when molten iron is put to 2/3, block molten iron, add nodularization
Agent, adds 1/3 molten iron after question response, cast in 5-10 minute completely.
The go bad tension of vanadium nickel spheroidal graphite cast-iron of nanometer is measured strong with reference to GB/T 1348-2009 nodular iron casting national standard
Degree and elongation percentage, and and do not carry out the rotten casting pig of nanometer (in addition to being not added with nanometer alterant, remaining preparation method is homogeneous
Together) performance compares, see table:
| Kind | Tensile strength MPa | Elongation percentage % |
| Non-nanometer goes bad casting pig | 520 | 13.5 |
| Nanometer goes bad casting pig | 588 | 14.3 |
Embodiment 2
A kind of nanometer of the present invention goes bad the detailed description of the invention of preparation method of vanadium nickel spheroidal graphite cast-iron: be main with the pig iron
Raw material, with coke, ferromanganese, bentonite, inovulant as adjuvant, join and electric furnace carry out high temperature melting, when molten iron temperature reaches
When 1500-1530 DEG C, utilize argon winding-up tank to be blown into pure argon gas 10-15 minute uniformly, then utilize argon to blow uniformly
Enter nanometer alterant powder body, come out of the stove after standing 5-10 minute, cast, during casting, add nodulizer, then through Overheating Treatment,
I.e. prepare nanometer to go bad foundry goods.
After described major ingredient and adjuvant mixture, the content of five big elements is: C 3.7-4.0%, Si 2.8-3.2%, P≤
0.06%, Mn 0.1-0.3%, S≤0.02%, the content of vanadium nickel element is: V0.1-0.15%, Ni0.2-1.0%.
Described nanometer alterant powder body is made up of Si, SiC 4:1 in mass ratio mixing, the particle diameter≤400nm of mixture.
Described nanometer alterant powder body is 1.6:1000 with the mass ratio of molten iron.
Described cast temperature is 1380 DEG C-1460 DEG C.
During described casting, it is impossible to allow molten iron directly impact nodulizer, when molten iron is put to 2/3, block molten iron, add nodularization
Agent, adds 1/3 molten iron after question response, cast in 5-10 minute completely.
The go bad tension of vanadium nickel spheroidal graphite cast-iron of nanometer is measured strong with reference to GB/T 1348-2009 nodular iron casting national standard
Degree and elongation percentage, and and do not carry out the rotten casting pig of nanometer (in addition to being not added with nanometer alterant, remaining preparation method is homogeneous
Together) performance compares, see table:
| Kind | Tensile strength MPa | Elongation percentage % |
| Non-nanometer goes bad casting pig | 513 | 13.8 |
| Nanometer goes bad casting pig | 582 | 14.9 |
Embodiment 3
A kind of nanometer of the present invention goes bad the detailed description of the invention of preparation method of vanadium nickel spheroidal graphite cast-iron: with the pig iron for the most former
Material, with coke, ferromanganese, bentonite, inovulant as adjuvant, join and electric furnace carry out high temperature melting, when molten iron temperature reaches
When 1500-1530 DEG C, utilize argon winding-up tank to be blown into pure argon gas 10-15 minute uniformly, then utilize argon to blow uniformly
Enter nanometer alterant powder body, come out of the stove after standing 5-10 minute, cast, during casting, add nodulizer, then through Overheating Treatment,
I.e. prepare nanometer to go bad foundry goods.
After described major ingredient and adjuvant mixture, the content of five big elements is: C 3.7-4.0%, Si 2.8-3.2%, P≤
0.06%, Mn 0.1-0.3%, S≤0.02%, the content of vanadium nickel element is: V0.1-0.15%, Ni0.2-1.0%.
Described nanometer alterant powder body is made up of Si, SiC 6:1 in mass ratio mixing, the particle diameter≤400nm of mixture.
Described nanometer alterant powder body is 1.8:1000 with the mass ratio of molten iron.
Described cast temperature is 1380 DEG C-1460 DEG C.
During described casting, it is impossible to allow molten iron directly impact nodulizer, when molten iron is put to 2/3, block molten iron, add nodularization
Agent, adds 1/3 molten iron after question response, cast in 5-10 minute completely.
The go bad tension of vanadium nickel spheroidal graphite cast-iron of nanometer is measured strong with reference to GB/T 1348-2009 nodular iron casting national standard
Degree and elongation percentage, and and do not carry out the rotten casting pig of nanometer (in addition to being not added with nanometer alterant, remaining preparation method is homogeneous
Together) performance compares, see table:
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that the content of bright description is made convert, or are directly or indirectly used in other relevant technology necks
Territory, is the most in like manner included in the scope of patent protection of the present invention.
Claims (6)
1. a nanometer goes bad the preparation method of vanadium nickel spheroidal graphite cast-iron, it is characterised in that with the vanadium nickel pig iron as primary raw material, with Jiao
Charcoal, ferromanganese, bentonite, inovulant are adjuvant, join and carry out high temperature melting in electric furnace, when molten iron temperature reaches 1500-1530
DEG C time, utilize argon winding-up tank be blown into pure argon gas 10-15 minute uniformly, then utilize argon be blown into uniformly nanometer go bad
Agent powder body, comes out of the stove after standing 5-10 minute, casts, and during casting, adds nodulizer, then through Overheating Treatment, i.e. prepares nanometer
Rotten foundry goods.
A kind of nanometer goes bad the preparation method of vanadium nickel spheroidal graphite cast-iron, it is characterised in that described major ingredient
With the content of after adjuvant mixture five big elements it is: C 3.7-4.0%, Si 2.8-3.2%, P≤0.06%, Mn 0.1-
0.3%, S≤0.02%, the content of vanadium nickel element is: V0.1-0.15%, Ni0.2-1.0%.
A kind of nanometer goes bad the preparation method of vanadium nickel spheroidal graphite cast-iron, it is characterised in that described nanometer
Alterant powder body is made up of Si, SiC mixing, the particle diameter≤400nm of mixture.
A kind of nanometer goes bad the preparation method of vanadium nickel spheroidal graphite cast-iron, it is characterised in that described nanometer
Alterant powder body is 1.5-2.0:1000 with the mass ratio of molten iron.
A kind of nanometer goes bad the preparation method of vanadium nickel spheroidal graphite cast-iron, it is characterised in that described casting
Temperature is 1380 DEG C-1460 DEG C.
A kind of nanometer goes bad the preparation method of vanadium nickel spheroidal graphite cast-iron, it is characterised in that described casting
Time, it is impossible to allow molten iron directly impact nodulizer, when molten iron is put to 2/3, block molten iron, add nodulizer, add after question response
1/3 molten iron, cast in 5-10 minute completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610182709.7A CN105821174A (en) | 2016-03-28 | 2016-03-28 | Preparation method of nano-modified vanadium-nickel ductile cast iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610182709.7A CN105821174A (en) | 2016-03-28 | 2016-03-28 | Preparation method of nano-modified vanadium-nickel ductile cast iron |
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| CN105821174A true CN105821174A (en) | 2016-08-03 |
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| CN201610182709.7A Pending CN105821174A (en) | 2016-03-28 | 2016-03-28 | Preparation method of nano-modified vanadium-nickel ductile cast iron |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557654A (en) * | 2017-08-14 | 2018-01-09 | 宁国市华丰耐磨材料有限公司 | A kind of boron-containing high-chromium cast-iron grinding ball preparation method through nanometer Metamorphism treatment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0080590B1 (en) * | 1981-12-01 | 1986-05-28 | Goetze Ag | Wear-resistant cast iron containing spheroidal graphite, and process for its manufacture |
| GB2265154A (en) * | 1992-02-18 | 1993-09-22 | Cofap | Nodular cast iron and method for making it |
| CN103484592A (en) * | 2013-09-02 | 2014-01-01 | 遵义市红花岗区自强铸造有限责任公司 | High-strength inoculated casting and manufacturing method thereof |
| CN103937925A (en) * | 2014-04-30 | 2014-07-23 | 芜湖市和蓄机械股份有限公司 | Preparation method for nano-modified casting |
-
2016
- 2016-03-28 CN CN201610182709.7A patent/CN105821174A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0080590B1 (en) * | 1981-12-01 | 1986-05-28 | Goetze Ag | Wear-resistant cast iron containing spheroidal graphite, and process for its manufacture |
| GB2265154A (en) * | 1992-02-18 | 1993-09-22 | Cofap | Nodular cast iron and method for making it |
| CN103484592A (en) * | 2013-09-02 | 2014-01-01 | 遵义市红花岗区自强铸造有限责任公司 | High-strength inoculated casting and manufacturing method thereof |
| CN103937925A (en) * | 2014-04-30 | 2014-07-23 | 芜湖市和蓄机械股份有限公司 | Preparation method for nano-modified casting |
Non-Patent Citations (1)
| Title |
|---|
| 郝石坚: "《现代铸铁学》", 31 March 2009, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557654A (en) * | 2017-08-14 | 2018-01-09 | 宁国市华丰耐磨材料有限公司 | A kind of boron-containing high-chromium cast-iron grinding ball preparation method through nanometer Metamorphism treatment |
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Application publication date: 20160803 |