CN105821285A - Method for preparing nanometer modified vanadium-titanium nodular cast iron - Google Patents
Method for preparing nanometer modified vanadium-titanium nodular cast iron Download PDFInfo
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- CN105821285A CN105821285A CN201610182188.5A CN201610182188A CN105821285A CN 105821285 A CN105821285 A CN 105821285A CN 201610182188 A CN201610182188 A CN 201610182188A CN 105821285 A CN105821285 A CN 105821285A
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- nanometer
- iron
- nodular cast
- cast iron
- molten iron
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
-
- 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)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a method for preparing nanometer modified vanadium-titanium nodular cast iron and relates to the technical field of nanometer modified castings. The method includes the following steps that vanadium-titanium pig iron adopted as the main raw material and coke, ferromanganese iron, bentonite and a nucleating agent adopted as auxiliary materials are added into an electric furnace so as to be melted at a high temperature, when the temperature of molten iron reaches 1500-1530 DEG C, pure argon is uniformly blown into the electric furnace through an argon injection tank for 10-15 minutes, and then nanometer modificator powder is evenly blown into the electric furnace through the argon; a product is discharged out of the electric furnace after standing for 5-10 minutes, and then casting is carried out; and during casting, a nodulizing agent is added, and after thermal treatment, a nanometer modified casting is obtained. The nanometer modified vanadium-titanium nodular cast iron prepared through the method has the good mechanical property.
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 V Ti nodular 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 V Ti nodular 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 titanium 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 3.6-3.8%, Si 2.4-
2.7%, P≤0.08%, Mn 0.2-0.4%, S≤0.025%, the content of vanadium titanium elements is: V0.15-0.2%, Ti0.08-
0.15%.
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 V Ti nodular 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 V Ti nodular 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 3.6-3.8%, Si 2.4-2.7%, P≤
0.08%, Mn 0.2-0.4%, S≤0.025%, the content of vanadium titanium elements is: V0.15-0.2%, Ti0.08-0.15%.
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 V Ti nodular 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 V Ti nodular cast iron:
With the pig iron as primary raw material, with coke, ferromanganese, bentonite, inovulant as adjuvant, join and electric furnace carries out high temperature
Fusing, when molten iron temperature reaches 1500-1530 DEG C, utilizes argon winding-up tank to be blown into pure argon gas 10-15 minute uniformly, so
After utilize argon to be blown into nanometer alterant powder body uniformly, come out of the stove after standing 5-10 minute, cast, during casting, add goal
Agent, then through Overheating Treatment, i.e. prepares nanometer and goes bad foundry goods.
After described major ingredient and adjuvant mixture, the content of five big elements is: C 3.6-3.8%, Si 2.4-2.7%, P≤
0.08%, Mn 0.2-0.4%, S≤0.025%, the content of vanadium titanium elements is: V0.15-0.2%, Ti0.08-0.15%.
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 V Ti nodular 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 V Ti nodular 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 3.6-3.8%, Si 2.4-2.7%, P≤
0.08%, Mn 0.2-0.4%, S≤0.025%, the content of vanadium titanium elements is: V0.15-0.2%, Ti0.08-0.15%.
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 V Ti nodular 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 V Ti nodular cast iron, it is characterised in that with vanadium titanium 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 V Ti nodular cast iron, it is characterised in that described major ingredient
With the content of after adjuvant mixture five big elements it is: C 3.6-3.8%, Si 2.4-2.7%, P≤0.08%, Mn 0.2-
0.4%, S≤0.025%, the content of vanadium titanium elements is: V0.15-0.2%, Ti0.08-0.15%.
A kind of nanometer goes bad the preparation method of V Ti nodular 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 V Ti nodular 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 V Ti nodular 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 V Ti nodular 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 |
|---|---|---|---|
| CN201610182188.5A CN105821285A (en) | 2016-03-28 | 2016-03-28 | Method for preparing nanometer modified vanadium-titanium nodular cast iron |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610182188.5A CN105821285A (en) | 2016-03-28 | 2016-03-28 | Method for preparing nanometer modified vanadium-titanium nodular cast iron |
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| CN105821285A true CN105821285A (en) | 2016-08-03 |
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| CN201610182188.5A Pending CN105821285A (en) | 2016-03-28 | 2016-03-28 | Method for preparing nanometer modified vanadium-titanium nodular cast iron |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106367676A (en) * | 2016-11-03 | 2017-02-01 | 广西大学 | Vanadium-titanium wear resistant cast iron and preparation method thereof |
Citations (5)
| 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 |
| CN103952620A (en) * | 2014-05-26 | 2014-07-30 | 四川省富邦钒钛制动鼓有限公司 | Vanadium-titanium ferritic nodular cast iron and preparation method thereof |
-
2016
- 2016-03-28 CN CN201610182188.5A patent/CN105821285A/en active Pending
Patent Citations (5)
| 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 |
| CN103952620A (en) * | 2014-05-26 | 2014-07-30 | 四川省富邦钒钛制动鼓有限公司 | Vanadium-titanium ferritic nodular cast iron and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106367676A (en) * | 2016-11-03 | 2017-02-01 | 广西大学 | Vanadium-titanium wear resistant cast iron and preparation method thereof |
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