CN108034786A - A kind of nanometer goes bad the preparation method of wearable ductile iron - Google Patents
A kind of nanometer goes bad the preparation method of wearable ductile iron Download PDFInfo
- Publication number
- CN108034786A CN108034786A CN201711418731.8A CN201711418731A CN108034786A CN 108034786 A CN108034786 A CN 108034786A CN 201711418731 A CN201711418731 A CN 201711418731A CN 108034786 A CN108034786 A CN 108034786A
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- CN
- China
- Prior art keywords
- nanometer
- preparation
- iron
- goes bad
- molten iron
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Classifications
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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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials 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
Go bad the preparation method of wearable ductile iron the invention discloses a kind of nanometer, is related to nanometer and goes bad casting techniques field, and this method is made of the following steps：Using the pig iron as primary raw material, using coke, ferromanganese, bentonite, inovulant as auxiliary material, addition it is a small amount of contain chromium compound, be added in electric furnace and carry out high temperature melting, when molten iron temperature reaches 1,500 1530 DEG C, pure argon gas is uniformly blown into using argon gas injection tank 10 15 minutes, then a nanometer alterant powder is uniformly blown into using argon gas, 5 is stood and comes out of the stove after ten minutes, cast, during casting, nodulizer is added, then through Overheating Treatment, that is, nanometer is made and goes bad casting.Nanometer prepared by the present invention goes bad wearable ductile iron with good antifatigue wear-resisting property.
Description
Technical field
The present invention relates to nanometer casting techniques field, and in particular to a kind of nanometer goes bad the preparation side of wearable ductile iron
Method.
Background technology
Spheroidal graphite cast-iron is a kind of 20th century high-strength cast iron material for growing up of the fifties, its comprehensive performance close to
Steel, is based on its excellent performance, has been successfully used to cast some stress complexity, intensity, toughness, wearability are more demanding
Part.Nanometer alterant has the characteristics that high rigidity, high temperature resistant, granularity be small and good dispersion；There is preferable knot with metal
With joint efforts.The nucleus formed in crystallization process greatly increases into brilliant quantity and reduces crystallite dimension, reaches crystal grain thinning, improves gold
Belong to the purpose of material mechanical performance, processing performance and performance.
The content of the invention
In view of the deficiencies of the prior art, go bad it is an object of the invention to provide a kind of nanometer the preparation of wearable ductile iron
Method.
Present invention solves the technical problem that it can be realized using following technical scheme：A kind of nanometer goes bad the casting of wear-resisting spheroidal graphite
The preparation method of iron, it is characterised in that using the pig iron as primary raw material, using coke, ferromanganese, bentonite, inovulant as auxiliary material, addition
A small amount of contains chromium compound, is added in electric furnace and carries out high temperature melting, when molten iron temperature reaches 1500-1530 DEG C, utilizes argon
Gas injection tank is uniformly blown into pure argon gas 10-15 minutes, and a nanometer alterant powder is then uniformly blown into using argon gas, stands
Come out of the stove, cast after 5-10 minutes, during casting, add nodulizer, then through Overheating Treatment, that is, nanometer is made and goes bad casting.
Preferably, the content of five big elements is after major ingredient and the auxiliary material mixture：C 3.5-3.8%, Si 2.2-
2.6%th, P≤0.08%, Mn 0.5-0.8%, S≤0.025%.
Preferably, the nanometer alterant powder is made of Si, SiC mixing, particle diameter≤400nm of mixture.
Preferably, the mass ratio of the nanometer alterant powder and molten iron is 1-1.5:1000.
Preferably, the cast temperature is 1380 DEG C -1460 DEG C.
Preferably, during the casting, it is impossible to allow molten iron directly to impact nodulizer, when molten iron is put to 2/3, block molten iron, add
Enter nodulizer, add 1/3 molten iron after question response, it is complete in cast in 5-10 minutes.
Beneficial effect is：Nanometer prepared by the present invention, which goes bad, wearable ductile iron and does not carry out the gray cast iron phase that nanometer goes bad
Than having good antifatigue wear-resisting property.
Embodiment
The following detailed description of the preferred embodiment of the present invention.
Embodiment 1
A kind of nanometer of the present invention go bad wearable ductile iron preparation method embodiment：Using the pig iron to be main former
Material, using coke, ferromanganese, bentonite, inovulant as auxiliary material, add it is a small amount of contain chromium compound, be added in electric furnace and carry out high temperature
Fusing, when molten iron temperature reaches 1500-1530 DEG C, is uniformly blown into pure argon gas 10-15 minutes, so using argon gas injection tank
Uniformly it is blown into a nanometer alterant powder using argon gas afterwards, comes out of the stove, cast after standing 5-10 minute, during casting, addition ball
Agent, then through Overheating Treatment, that is, be made nanometer and go bad casting.
The content of five big elements is after major ingredient and the auxiliary material mixture：C 3.5-3.8%, Si2.2-2.6%, P≤
0.08%th, Mn 0.5-0.8%, S≤0.025%.
The nanometer alterant powder is by Si, SiC in mass ratio 5：1 mixing composition, particle diameter≤400nm of mixture.
The mass ratio of the nanometer alterant powder and molten iron is 1.2:1000.
The cast temperature is 1380 DEG C -1460 DEG C.
During the casting, it is impossible to allow molten iron directly to impact nodulizer, when molten iron is put to 2/3, block molten iron, add nodularization
Agent, after question response plus 1/3 molten iron, in cast in 5-10 minute completely.
With reference to GB/T 1348-2009 nodular iron castings national standard measure nanometer go bad wearable ductile iron tension it is strong
Degree and hardness, and and do not carry out the gray cast iron that nanometer goes bad (in addition to nanometer alterant is not added with, remaining preparation method is homogeneous
Performance is compared together), see the table below：
| Species | Tensile strength MPa | Hardness HBW |
| Non- nanometer goes bad gray cast iron | 730 | 2.6 |
| The rotten gray cast iron of nanometer | 961 | 3.3 |
Embodiment 2
A kind of nanometer of the present invention go bad wearable ductile iron preparation method embodiment：Using the pig iron to be main former
Material, using coke, ferromanganese, bentonite, inovulant as auxiliary material, add it is a small amount of contain chromium compound, be added in electric furnace and carry out high temperature
Fusing, when molten iron temperature reaches 1500-1530 DEG C, is uniformly blown into pure argon gas 10-15 minutes, so using argon gas injection tank
Uniformly it is blown into a nanometer alterant powder using argon gas afterwards, comes out of the stove, cast after standing 5-10 minute, during casting, addition ball
Agent, then through Overheating Treatment, that is, be made nanometer and go bad casting.
The content of five big elements is after major ingredient and the auxiliary material mixture：C 3.5-3.8%, Si2.2-2.6%, P≤
0.08%th, Mn 0.5-0.8%, S≤0.025%.
The nanometer alterant powder is by Si, SiC in mass ratio 4：1 mixing composition, particle diameter≤400nm of mixture.
The mass ratio of the nanometer alterant powder and molten iron is 1.4:1000.
The cast temperature is 1380 DEG C -1460 DEG C.
During the casting, it is impossible to allow molten iron directly to impact nodulizer, when molten iron is put to 2/3, block molten iron, add nodularization
Agent, after question response plus 1/3 molten iron, in cast in 5-10 minute completely.
With reference to GB/T 1348-2009 nodular iron castings national standard measure nanometer go bad wearable ductile iron tension it is strong
Degree and hardness, and and do not carry out the gray cast iron that nanometer goes bad (in addition to nanometer alterant is not added with, remaining preparation method is homogeneous
Performance is compared together), see the table below：
| Species | Tensile strength MPa | Hardness HBW |
| Non- nanometer goes bad gray cast iron | 745 | 2.5 |
| The rotten gray cast iron of nanometer | 978 | 3.4 |
Embodiment 3
A kind of nanometer of the present invention go bad wearable ductile iron preparation method embodiment：Using the pig iron to be main former
Material, using coke, ferromanganese, bentonite, inovulant as auxiliary material, add it is a small amount of contain chromium compound, be added in electric furnace and carry out high temperature
Fusing, when molten iron temperature reaches 1500-1530 DEG C, is uniformly blown into pure argon gas 10-15 minutes, so using argon gas injection tank
Uniformly it is blown into a nanometer alterant powder using argon gas afterwards, comes out of the stove, cast after standing 5-10 minute, during casting, addition ball
Agent, then through Overheating Treatment, that is, be made nanometer and go bad casting.
The content of five big elements is after major ingredient and the auxiliary material mixture：C 3.5-3.8%, Si2.2-2.6%, P≤
0.08%th, Mn 0.5-0.8%, S≤0.025%.
The nanometer alterant powder is by Si, SiC in mass ratio 6：1 mixing composition, particle diameter≤400nm of mixture.
The mass ratio of the nanometer alterant powder and molten iron is 1.5:1000.
The cast temperature is 1380 DEG C -1460 DEG C.
During the casting, it is impossible to allow molten iron directly to impact nodulizer, when molten iron is put to 2/3, block molten iron, add nodularization
Agent, after question response plus 1/3 molten iron, in cast in 5-10 minute completely.
With reference to GB/T 1348-2009 nodular iron castings national standard measure nanometer go bad wearable ductile iron tension it is strong
Degree and hardness, and and do not carry out the gray cast iron that nanometer goes bad (in addition to nanometer alterant is not added with, remaining preparation method is homogeneous
Performance is compared together), see the table below：
| Species | Tensile strength MPa | Hardness HBW |
| Non- nanometer goes bad gray cast iron | 751 | 2.1 |
| The rotten gray cast iron of nanometer | 1013 | 3.2 |
The foregoing is merely the embodiment of the present invention, is not intended to limit the scope of the invention, every to utilize this hair
The equivalent structure or equivalent flow shift that bright description is made, is directly or indirectly used in other relevant technology necks
Domain, is included within the scope of the present invention.
Claims (6)
- The preparation method of wearable ductile iron 1. a kind of nanometer goes bad, it is characterised in that using the pig iron as primary raw material, with coke, Ferromanganese, bentonite, inovulant are auxiliary material, add it is a small amount of contain chromium compound, be added in electric furnace and carry out high temperature melting, work as molten iron When temperature reaches 1500-1530 DEG C, uniformly it is blown into pure argon gas 10-15 minutes using argon gas injection tank, then utilizes argon gas It is uniform to be blown into a nanometer alterant powder, come out of the stove, cast after standing 5-10 minute, during casting, addition nodulizer, then pass through Heat treatment, that is, be made nanometer and go bad casting.
- 2. a kind of nanometer goes bad the preparation method of wearable ductile iron according to claim 1, it is characterised in that the major ingredient Content with five big elements after auxiliary material mixture is：C 3.5-3.8%, Si 2.2-2.6%, P≤0.08%, Mn 0.5- 0.8%th, S≤0.025%.
- 3. a kind of nanometer goes bad the preparation method of wearable ductile iron according to claim 1, it is characterised in that the nanometer Alterant powder is made of Si, SiC mixing, particle diameter≤400nm of mixture.
- 4. a kind of nanometer goes bad the preparation method of wearable ductile iron according to claim 1, it is characterised in that the nanometer The mass ratio of alterant powder and molten iron is 1-1.5:1000.
- 5. a kind of nanometer goes bad the preparation method of wearable ductile iron according to claim 1, it is characterised in that the casting Temperature is 1380 DEG C -1460 DEG C.
- 6. a kind of nanometer goes bad the preparation method of wearable ductile iron according to claim 1, it is characterised in that the casting When, it is impossible to allow molten iron directly to impact nodulizer, when molten iron is put to 2/3, block molten iron, add nodulizer, add after question response 1/3 molten iron, it is complete in cast in 5-10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711418731.8A CN108034786A (en) | 2017-12-25 | 2017-12-25 | A kind of nanometer goes bad the preparation method of wearable ductile iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711418731.8A CN108034786A (en) | 2017-12-25 | 2017-12-25 | A kind of nanometer goes bad the preparation method of wearable ductile iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108034786A true CN108034786A (en) | 2018-05-15 |
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ID=62100947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711418731.8A Pending CN108034786A (en) | 2017-12-25 | 2017-12-25 | A kind of nanometer goes bad the preparation method of wearable ductile iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108034786A (en) |
-
2017
- 2017-12-25 CN CN201711418731.8A patent/CN108034786A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180515 |