CN109136727A - A kind of high performance spheroidal graphite cast-iron - Google Patents
A kind of high performance spheroidal graphite cast-iron Download PDFInfo
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- CN109136727A CN109136727A CN201810778634.8A CN201810778634A CN109136727A CN 109136727 A CN109136727 A CN 109136727A CN 201810778634 A CN201810778634 A CN 201810778634A CN 109136727 A CN109136727 A CN 109136727A
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- iron
- spheroidal graphite
- graphite cast
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Classifications
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- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D5/00—Heat treatments of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
- C22C33/10—Making cast-iron alloys including procedures for adding magnesium
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of high performance spheroidal graphite cast-iron, the weight percent of its each chemical constituent are as follows: carbon 3.4-3.7%, silicon 1.8-2.4%, manganese 0.1-0.3%, magnesium 0.04-0.07%, tungsten 0.2-0.3%, molybdenum 0.2-0.5%, tin 0.02-0.04%, bismuth 0.005-0.01%, rare earth 0.04-0.08%, P≤0.04%, S≤0.02%, surplus are Fe and inevitable impurity.The present invention by melting, casting, heat treatment and etc. be made, improved by reasonable technological parameter and formula composition, spheroidal graphite cast-iron obtained has good high temperature resistant, corrosion resistant performance, and has good intensity and toughness, good combination property.
Description
Technical field
The present invention relates to casting technology fields, more particularly to a kind of high performance spheroidal graphite cast-iron.
Background technique
Spheroidal graphite cast-iron is a kind of 20th century high strength cast iron material for growing up of the fifties, comprehensive performance close to
Steel.Phosphorus content is at least 3% in spheroidal graphite cast-iron, obtains globular graphite after nodularization and inoculation, effectively improves ball milling
The mechanical performance of cast iron, in particular improves plasticity and toughness, to obtain the intensity also higher than carbon steel, has been successfully used to cast
It is complicated to make some stress, the more demanding part of intensity, toughness, wearability.However, with the development of industry, existing ball milling casting
The performance indicator of iron has been unable to meet the demand of modern production.
Summary of the invention
In order to make up the defect of prior art, the present invention provides a kind of high performance spheroidal graphite cast-iron.
The technical problems to be solved by the invention are achieved by the following technical programs:
A kind of high performance spheroidal graphite cast-iron, the weight percent of each chemical constituent are as follows: carbon 3.4-3.7%, silicon 1.8-2.4%, manganese
0.1-0.3%, magnesium 0.04-0.07%, tungsten 0.2-0.3%, molybdenum 0.2-0.5%, tin 0.02-0.04%, bismuth 0.005-0.01%, rare earth
0.04-0.08%, P≤0.04%, S≤0.02%, surplus are Fe and inevitable impurity.
Further, preparation method includes the following steps:
S1. raw material melting: carrying out ingredient according to the component of alloy and content, is first fitted into carburant, the pig iron, steel scrap, ferrotungsten
It in frequency electric induction furnace, removed the gred, skimmed after being all melt into iron liquid, being kept the temperature, spectral component analysis, when bonded hard ferrite magnet rises to
Manganese iron, ferrosilicon, molybdenum-iron are added at 1440 DEG C -1480 DEG C；
S2. spheroidising and inoculation: being added nodulizer in nodularization packet, and covering accounts for iron liquid total weight 0.3- on nodulizer
0.5% the first inovulant covers iron filings on the first inovulant, and consolidation pours iron liquid, and bonded hard ferrite magnet is 1420-1450 DEG C, complete
After spheroidising and Bao Nei inoculation, add pregnant in the second inovulant carry out type of iron liquid total weight 0.4%-0.6%
It educates；
S3. be poured: be poured, casting while be added iron liquid total weight 0.2%-0.3% random inoculant carry out with
Stream is bred；
S4. be heat-treated: the casting after casting complete is heat-treated: 660 DEG C ± 10 DEG C of annealing temperature, heat preservation 3h is simultaneously cold with furnace
But, when furnace temperature is down to 200 DEG C, casting is come out of the stove natural cooling.
Further, the nodulizer is made of following weight percent composition: magnesium 10.0-12.0%, rare earth 2.0-
3.0%, silicon 40.0-45.0%, calcium 2-3%, barium 2.5-2.9%, Al < 1.5%, Fe is surplus.
Further, first inovulant is made of following weight percent composition: rare earth 5-10%, silicon 55-65%,
Strontium: 0.5-1%, barium 0.2-0.5%, zirconium 0.3-0.6%, manganese 2-3%, surplus is iron.
Further, second inovulant is made of following weight percent composition: silicon 60-70%, barium 2-6%, calcium
0.5-2.0%, aluminium 1-2%, surplus are iron.
Further, the random inoculant is made of following weight percent composition: silicon 70-75%, aluminium 3.5-
4.5%, calcium 0.5-1.5%, surplus are iron.
The invention has the following beneficial effects:
The present invention by melting, casting, heat treatment and etc. be made, improved by reasonable technological parameter and formula composition, system
The spheroidal graphite cast-iron obtained has good high temperature resistant, corrosion resistant performance, and has good intensity and toughness, good combination property.
Specific embodiment
The present invention will now be described in detail with reference to examples, and the examples are only preferred embodiments of the present invention,
It is not limitation of the invention.
Embodiment 1
A kind of high performance spheroidal graphite cast-iron, the weight percent of each chemical constituent are as follows: carbon 3.5%, silicon 2%, manganese 0.1-0.3%, magnesium
0.06%, tungsten 0.25%, molybdenum 0.3%, tin 0.03%, bismuth 0.008%, rare earth 0.06%, P≤0.04%, S≤0.02%, surplus be Fe and
Inevitable impurity.
Preparation method includes the following steps:
S1. raw material melting: carrying out ingredient according to the component of alloy and content, is first fitted into carburant, the pig iron, steel scrap, ferrotungsten
It in frequency electric induction furnace, removed the gred, skimmed after being all melt into iron liquid, being kept the temperature, spectral component analysis, when bonded hard ferrite magnet rises to
Manganese iron, ferrosilicon, molybdenum-iron are added at 1460 DEG C；
S2. spheroidising and inoculation: being added nodulizer in nodularization packet, and covering accounts for iron liquid total weight 0.4% on nodulizer
The first inovulant, iron filings are covered on the first inovulant, consolidation pours iron liquid, and bonded hard ferrite magnet is 1420-1450 DEG C, completes ball
In changing processing and wrapping after inoculation, the second inovulant for adding iron liquid total weight 0.5% carries out mould cavity inoculation；
S3. it is poured: being poured, the random inoculant progress that iron liquid total weight 0.25% is added while casting is pregnant with flowing
It educates；
S4. be heat-treated: the casting after casting complete is heat-treated: 660 DEG C ± 10 DEG C of annealing temperature, heat preservation 3h is simultaneously cold with furnace
But, when furnace temperature is down to 200 DEG C, casting is come out of the stove natural cooling.
Wherein, the nodulizer is made of following weight percent composition: magnesium 11%, rare earth 2.5%, silicon 42%, calcium
2.5%, barium 2.6%, Al < 1.5%, Fe are surplus；First inovulant is made of following weight percent composition: rare earth
7%, silicon 60%, strontium: 0.8%, barium 0.3%, zirconium 0.4%, manganese 2.5%, surplus is iron；Second inovulant is by following weight hundred
Point than at being grouped as: silicon 65%, barium 4%, calcium 1.2%, aluminium 1.5%, surplus are iron；The random inoculant is by following weight percent
At being grouped as: silicon 72%, aluminium 4%, calcium 1%, surplus are iron.
Embodiment 2
A kind of high performance spheroidal graphite cast-iron, the weight percent of each chemical constituent are as follows: carbon 3.4%, silicon 1.8-%, manganese 0.1%, magnesium
0.04%, tungsten 0.2%, molybdenum 0.2%, tin 0.02%, bismuth 0.005%, rare earth 0.04-0.08%, P≤0.04%, S≤0.02%, surplus are
Fe and inevitable impurity.
Preparation method includes the following steps:
S1. raw material melting: carrying out ingredient according to the component of alloy and content, is first fitted into carburant, the pig iron, steel scrap, ferrotungsten
It in frequency electric induction furnace, removed the gred, skimmed after being all melt into iron liquid, being kept the temperature, spectral component analysis, when bonded hard ferrite magnet rises to
Manganese iron, ferrosilicon, molybdenum-iron are added at 1440 DEG C；
S2. spheroidising and inoculation: being added nodulizer in nodularization packet, and covering accounts for iron liquid total weight 0.3% on nodulizer
The first inovulant, iron filings are covered on the first inovulant, consolidation pours iron liquid, and bonded hard ferrite magnet is 1420-1450 DEG C, completes ball
In changing processing and wrapping after inoculation, the second inovulant for adding iron liquid total weight 0.4% carries out mould cavity inoculation；
S3. it is poured: being poured, the random inoculant that iron liquid total weight 0.2% is added while casting carries out current-following inoculation；
S4. be heat-treated: the casting after casting complete is heat-treated: 660 DEG C ± 10 DEG C of annealing temperature, heat preservation 3h is simultaneously cold with furnace
But, when furnace temperature is down to 200 DEG C, casting is come out of the stove natural cooling.
Wherein, the nodulizer is made of following weight percent composition: magnesium 10.0%, rare earth 2.0%, silicon
40.05.0%, calcium 2%, barium 2.5%, Al < 1.5%, Fe are surplus；First inovulant is by following weight percent composition
Composition: rare earth 5%, silicon 55%, strontium: 0.5%, barium 0.2%, zirconium 0.3%, manganese 2%, surplus is iron；Second inovulant by with
Lower weight percent composition composition: silicon 60%, barium 2%, calcium 0.5%, aluminium 1%, surplus are iron；The random inoculant is by following weight
Percent composition composition: silicon 70%, aluminium 3.5%, calcium 0.5%, surplus are iron.
Embodiment 3
A kind of high performance spheroidal graphite cast-iron, the weight percent of each chemical constituent are as follows: carbon 3.7%, silicon 2.4%, manganese 0.3%, magnesium
0.07%, tungsten 0.3%, molybdenum 0.5%, tin 0.04%, bismuth 0.01%, rare earth 0.08%, P≤0.04%, S≤0.02%, surplus is for Fe and not
Evitable impurity.
Preparation method includes the following steps:
S1. raw material melting: carrying out ingredient according to the component of alloy and content, is first fitted into carburant, the pig iron, steel scrap, ferrotungsten
It in frequency electric induction furnace, removed the gred, skimmed after being all melt into iron liquid, being kept the temperature, spectral component analysis, when bonded hard ferrite magnet rises to
Manganese iron, ferrosilicon, molybdenum-iron are added at 1480 DEG C；
S2. spheroidising and inoculation: being added nodulizer in nodularization packet, and covering accounts for iron liquid total weight 0.5% on nodulizer
The first inovulant, iron filings are covered on the first inovulant, consolidation pours iron liquid, and bonded hard ferrite magnet is 1450 DEG C, completes spheroidising
After wrapping interior inoculation, the second inovulant for adding iron liquid total weight 0.6% carries out mould cavity inoculation；
S3. it is poured: being poured, the random inoculant that iron liquid total weight 0.3% is added while casting carries out current-following inoculation；
S4. be heat-treated: the casting after casting complete is heat-treated: 660 DEG C ± 10 DEG C of annealing temperature, heat preservation 3h is simultaneously cold with furnace
But, when furnace temperature is down to 200 DEG C, casting is come out of the stove natural cooling.
Wherein, the nodulizer is made of following weight percent composition: magnesium 12.0%, rare earth 3.0%, silicon 45.0%,
Calcium 3%, barium 2.9%, Al < 1.5%, Fe are surplus；First inovulant is made of following weight percent composition: rare earth
10%, silicon 65%, strontium 1%, barium 0.5%, zirconium 0.6%, manganese 3%, surplus is iron；Second inovulant is by following weight percent
At being grouped as: silicon 70%, barium 6%, calcium 2.0%, aluminium 2%, surplus are iron；The random inoculant is by following weight percent composition group
At: silicon 75%, aluminium 4.5%, calcium 1.5%, surplus are iron.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not
Therefore limitations on the scope of the patent of the present invention are interpreted as, as long as skill obtained in the form of equivalent substitutions or equivalent transformations
Art scheme should all be fallen within the scope and spirit of the invention.
Claims (6)
1. a kind of high performance spheroidal graphite cast-iron, the weight percent of each chemical constituent are as follows: carbon 3.4-3.7%, silicon 1.8-2.4%,
Manganese 0.1-0.3%, magnesium 0.04-0.07%, tungsten 0.2-0.3%, molybdenum 0.2-0.5%, tin 0.02-0.04%, bismuth 0.005-0.01%, rare earth
0.04-0.08%, P≤0.04%, S≤0.02%, surplus are Fe and inevitable impurity.
2. spheroidal graphite cast-iron as described in claim 1, which is characterized in that preparation method includes the following steps:
S1. raw material melting: carrying out ingredient according to the component of alloy and content, is first fitted into carburant, the pig iron, steel scrap, ferrotungsten
It in frequency electric induction furnace, removed the gred, skimmed after being all melt into iron liquid, being kept the temperature, spectral component analysis, when bonded hard ferrite magnet rises to
Manganese iron, ferrosilicon, molybdenum-iron are added at 1440 DEG C -1480 DEG C；
S2. spheroidising and inoculation: being added nodulizer in nodularization packet, and covering accounts for iron liquid total weight 0.3- on nodulizer
0.5% the first inovulant covers iron filings on the first inovulant, and consolidation pours iron liquid, and bonded hard ferrite magnet is 1420-1450 DEG C, complete
After spheroidising and Bao Nei inoculation, add pregnant in the second inovulant carry out type of iron liquid total weight 0.4%-0.6%
It educates；
S3. be poured: be poured, casting while be added iron liquid total weight 0.2%-0.3% random inoculant carry out with
Stream is bred；
S4. be heat-treated: the casting after casting complete is heat-treated: 660 DEG C ± 10 DEG C of annealing temperature, heat preservation 3h is simultaneously cold with furnace
But, when furnace temperature is down to 200 DEG C, casting is come out of the stove natural cooling.
3. spheroidal graphite cast-iron as claimed in claim 2, which is characterized in that the nodulizer is by following weight percent composition group
At: magnesium 10.0-12.0%, rare earth 2.0-3.0%, silicon 40.0-45.0%, calcium 2-3%, barium 2.5-2.9%, Al < 1.5%, Fe
For surplus.
4. spheroidal graphite cast-iron as claimed in claim 2, which is characterized in that first inovulant is by following weight percent composition
Composition: rare earth 5-10%, silicon 55-65%, strontium: 0.5-1%, barium 0.2-0.5%, zirconium 0.3-0.6%, manganese 2-3%, surplus is iron.
5. spheroidal graphite cast-iron as claimed in claim 2, which is characterized in that second inovulant is by following weight percent composition
Composition: silicon 60-70%, barium 2-6%, calcium 0.5-2.0%, aluminium 1-2%, surplus are iron.
6. spheroidal graphite cast-iron as claimed in claim 2, which is characterized in that the random inoculant is by following weight percent composition
Composition: silicon 70-75%, aluminium 3.5-4.5%, calcium 0.5-1.5%, surplus are iron.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810778634.8A CN109136727A (en) | 2018-07-16 | 2018-07-16 | A kind of high performance spheroidal graphite cast-iron |
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| CN201810778634.8A CN109136727A (en) | 2018-07-16 | 2018-07-16 | A kind of high performance spheroidal graphite cast-iron |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284051A (en) * | 2019-05-10 | 2019-09-27 | 芜湖泓鹄材料技术有限公司 | A kind of high intensity drawing die material and drawing die production method |
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Application publication date: 20190104 |