CN106995899A - A kind of spheroidal graphite cast-iron and preparation method thereof - Google Patents
A kind of spheroidal graphite cast-iron and preparation method thereof Download PDFInfo
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- CN106995899A CN106995899A CN201710265645.1A CN201710265645A CN106995899A CN 106995899 A CN106995899 A CN 106995899A CN 201710265645 A CN201710265645 A CN 201710265645A CN 106995899 A CN106995899 A CN 106995899A
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- iron
- spheroidal graphite
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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
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
-
- 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)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of spheroidal graphite cast-iron and preparation method thereof, spheroidal graphite cast-iron composition includes 15 parts of 30 60 parts of the pig iron, 4 10 parts of carbon, 4 12 parts of silicon, 38 parts of aluminium, 4 10 parts of copper, 27 parts of nickel, 14 parts of magnesium, 26 parts of chromium, 4 10 parts of molybdenum and rare earth by weight, preparation technology of the present invention is simple, obtained spheroidal graphite cast-iron oxidation resistent susceptibility is good, and high temperature resistant, wear-resisting, shock resistance are good.
Description
Technical field
The present invention relates to spheroidal graphite cast-iron preparing technical field, specially a kind of spheroidal graphite cast-iron and preparation method thereof.
Background technology
Spheroidal graphite cast-iron is to obtain globular graphite by nodularization and inoculation, is effectively improved the mechanical performance of cast iron,
Plasticity and toughness are in particular improved, so as to obtain than carbon steel also high intensity.Its combination property is widely used in casting close to steel
Some stress complexity is made, intensity, toughness, wearability require higher part.The production of spheroidal graphite cast-iron be typically using the pig iron and
Spheroidising is carried out after foundry returns high temperature melting again, the production method of this spheroidal graphite cast-iron need to be up to 80% with pig iron amount, due to
Pig iron cost of material is high, causes the production cost of spheroidal graphite cast-iron high.
The content of the invention
It is an object of the invention to provide a kind of spheroidal graphite cast-iron and preparation method thereof, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides following technical scheme：A kind of spheroidal graphite cast-iron, spheroidal graphite cast-iron composition is by weight
Number includes 30-60 parts of the pig iron, 4-10 parts of carbon, 4-12 parts of silicon, 3-8 parts of aluminium, 4-10 parts of copper, 2-7 parts of nickel, 1-4 parts of magnesium, chromium 2-6
1-5 parts of part, 4-10 parts of molybdenum and rare earth.
It is preferred that, the preferred composition proportion of spheroidal graphite cast-iron is：45 parts of the pig iron, 7 parts of carbon, 8 parts of silicon, 5 parts of aluminium, 7 parts of copper, nickel 5
Part, 3 parts of magnesium, 4 parts of chromium, 7 parts of molybdenum and 3 parts of rare earth.
It is preferred that, its preparation method comprises the following steps：
A, the pig iron is put into intermediate frequency furnace carries out being fused into molten iron, remove residue, stove is warming up to 1500-1700 DEG C afterwards；
B, addition carbon, silicon, aluminium, copper, nickel, magnesium, chromium, molybdenum in the molten iron that step A is obtained, are cooled to 800-900 immediately after melting
℃；
C, rare earth will be added after stove constant temperature 2h afterwards, stove is brought rapidly up to 1200 DEG C -1400 DEG C again afterwards；
D, constant temperature after stove constant temperature 3h is quenched to 180-210 DEG C afterwards；
E, be finally putting into 160 DEG C -180 DEG C of tempering furnace be incubated 2h after be cooled to room temperature.
Compared with prior art, the beneficial effects of the invention are as follows：Preparation technology of the present invention is simple, and spheroidal graphite cast-iron oxytolerant is made
Change performance is good, and high temperature resistant, wear-resisting, shock resistance are good, and its production cost is low, and the property indices of obtained spheroidal graphite cast-iron reach
To the requirement of national Specification.
Embodiment
The technical scheme in the embodiment of the present invention is clearly and completely described below, it is clear that described embodiment
Only it is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The present invention provides a kind of technical scheme：A kind of spheroidal graphite cast-iron, spheroidal graphite cast-iron composition includes pig iron 30- by weight
60 parts, 4-10 parts of carbon, 4-12 parts of silicon, 3-8 parts of aluminium, 4-10 parts of copper, 2-7 parts of nickel, 1-4 parts of magnesium, 2-6 parts of chromium, 4-10 parts of molybdenum and
1-5 parts of rare earth.
Embodiment one：
Spheroidal graphite cast-iron composition includes 30 parts of the pig iron, 4 parts of carbon, 4 parts of silicon, 3 parts of aluminium, 4 parts of copper, 2 parts of nickel, 1 part of magnesium, chromium by weight
1 part of 2 parts, 4 parts of molybdenum and rare earth.
The preparation method of the present embodiment comprises the following steps：
A, the pig iron is put into intermediate frequency furnace carries out being fused into molten iron, remove residue, stove is warming up to 1500 DEG C afterwards；
B, addition carbon, silicon, aluminium, copper, nickel, magnesium, chromium, molybdenum in the molten iron that step A is obtained, are cooled to 800 DEG C immediately after melting；
C, rare earth will be added after stove constant temperature 2h afterwards, stove is brought rapidly up to 1200 DEG C again afterwards；
D, constant temperature after stove constant temperature 3h is quenched to 180 DEG C afterwards；
E, be finally putting into 160 DEG C of tempering furnace be incubated 2h after be cooled to room temperature.
Embodiment two：
Spheroidal graphite cast-iron composition includes 60 parts of the pig iron, 10 parts of carbon, 12 parts of silicon, 8 parts of aluminium, 10 parts of copper, 7 parts of nickel, magnesium 4 by weight
Part, 6 parts of chromium, 10 parts of molybdenum and 5 parts of rare earth.
The preparation method of the present embodiment comprises the following steps：
A, the pig iron is put into intermediate frequency furnace carries out being fused into molten iron, remove residue, stove is warming up to 1700 DEG C afterwards；
B, addition carbon, silicon, aluminium, copper, nickel, magnesium, chromium, molybdenum in the molten iron that step A is obtained, are cooled to 900 DEG C immediately after melting；
C, rare earth will be added after stove constant temperature 2h afterwards, stove is brought rapidly up to 1400 DEG C again afterwards；
D, constant temperature after stove constant temperature 3h is quenched to 210 DEG C afterwards；
E, be finally putting into 180 DEG C of tempering furnace be incubated 2h after be cooled to room temperature.
Embodiment three：
Spheroidal graphite cast-iron composition includes 35 parts of the pig iron, 5 parts of carbon, 5 parts of silicon, 4 parts of aluminium, 5 parts of copper, 3 parts of nickel, 2 parts of magnesium, chromium by weight
2 parts of 3 parts, 5 parts of molybdenum and rare earth.
The preparation method of the present embodiment comprises the following steps：
A, the pig iron is put into intermediate frequency furnace carries out being fused into molten iron, remove residue, stove is warming up to 1550 DEG C afterwards；
B, addition carbon, silicon, aluminium, copper, nickel, magnesium, chromium, molybdenum in the molten iron that step A is obtained, are cooled to 820 DEG C immediately after melting；
C, rare earth will be added after stove constant temperature 2h afterwards, stove is brought rapidly up to 1250 DEG C again afterwards；
D, constant temperature after stove constant temperature 3h is quenched to 185 DEG C afterwards；
E, be finally putting into 165 DEG C of tempering furnace be incubated 2h after be cooled to room temperature.
Example IV：
Spheroidal graphite cast-iron composition by weight include 55 parts of the pig iron, 9 parts of carbon, 11 parts of silicon, 7 parts of aluminium, 9 parts of copper, 6 parts of nickel, 3 parts of magnesium,
4 parts of 5 parts of chromium, 9 parts of molybdenum and rare earth.
The preparation method of the present embodiment comprises the following steps：
A, the pig iron is put into intermediate frequency furnace carries out being fused into molten iron, remove residue, stove is warming up to 1650 DEG C afterwards；
B, addition carbon, silicon, aluminium, copper, nickel, magnesium, chromium, molybdenum in the molten iron that step A is obtained, are cooled to 880 DEG C immediately after melting；
C, rare earth will be added after stove constant temperature 2h afterwards, stove is brought rapidly up to 1290 DEG C again afterwards；
D, constant temperature after stove constant temperature 3h is quenched to 190 DEG C afterwards；
E, be finally putting into 175 DEG C of tempering furnace be incubated 2h after be cooled to room temperature.
Embodiment five：
Spheroidal graphite cast-iron composition by weight include 45 parts of the pig iron, 8 parts of carbon, 10 parts of silicon, 6 parts of aluminium, 6 parts of copper, 5 parts of nickel, 4 parts of magnesium,
4 parts of 3 parts of chromium, 8 parts of molybdenum and rare earth.
The preparation method of the present embodiment comprises the following steps：
A, the pig iron is put into intermediate frequency furnace carries out being fused into molten iron, remove residue, stove is warming up to 1680 DEG C afterwards；
B, addition carbon, silicon, aluminium, copper, nickel, magnesium, chromium, molybdenum in the molten iron that step A is obtained, are cooled to 820 DEG C immediately after melting；
C, rare earth will be added after stove constant temperature 2h afterwards, stove is brought rapidly up to 1350 DEG C again afterwards；
D, constant temperature after stove constant temperature 3h is quenched to 200 DEG C afterwards；
E, be finally putting into 172 DEG C of tempering furnace be incubated 2h after be cooled to room temperature.
Embodiment six：
Spheroidal graphite cast-iron composition includes 45 parts of the pig iron, 7 parts of carbon, 8 parts of silicon, 5 parts of aluminium, 7 parts of copper, 5 parts of nickel, 3 parts of magnesium, chromium by weight
3 parts of 4 parts, 7 parts of molybdenum and rare earth.
The preparation method of the present embodiment comprises the following steps：
A, the pig iron is put into intermediate frequency furnace carries out being fused into molten iron, remove residue, stove is warming up to 1600 DEG C afterwards；
B, addition carbon, silicon, aluminium, copper, nickel, magnesium, chromium, molybdenum in the molten iron that step A is obtained, are cooled to 850 DEG C immediately after melting；
C, rare earth will be added after stove constant temperature 2h afterwards, stove is brought rapidly up to 1300 DEG C again afterwards；
D, constant temperature after stove constant temperature 3h is quenched to 195 DEG C afterwards；
E, be finally putting into 170 DEG C of tempering furnace be incubated 2h after be cooled to room temperature.
Preparation technology of the present invention is simple, and obtained spheroidal graphite cast-iron oxidation resistent susceptibility is good, and high temperature resistant, wear-resisting, shock resistance are good,
Its production cost is low, and the property indices of obtained spheroidal graphite cast-iron are up to state standards defined require.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (3)
1. a kind of spheroidal graphite cast-iron, it is characterised in that：Spheroidal graphite cast-iron composition by weight include 30-60 parts of the pig iron, 4-10 parts of carbon,
1-5 parts of 4-12 parts of silicon, 3-8 parts of aluminium, 4-10 parts of copper, 2-7 parts of nickel, 1-4 parts of magnesium, 2-6 parts of chromium, 4-10 parts of molybdenum and rare earth.
2. a kind of spheroidal graphite cast-iron according to claim 1, it is characterised in that：The preferred composition proportion of spheroidal graphite cast-iron is：It is raw
3 parts of 45 parts of iron, 7 parts of carbon, 8 parts of silicon, 5 parts of aluminium, 7 parts of copper, 5 parts of nickel, 3 parts of magnesium, 4 parts of chromium, 7 parts of molybdenum and rare earth.
3. a kind of spheroidal graphite cast-iron according to claim 1, it is characterised in that：Its preparation method comprises the following steps：
A, the pig iron is put into intermediate frequency furnace carries out being fused into molten iron, remove residue, stove is warming up to 1500-1700 DEG C afterwards；
B, addition carbon, silicon, aluminium, copper, nickel, magnesium, chromium, molybdenum in the molten iron that step A is obtained, are cooled to 800-900 immediately after melting
℃；
C, rare earth will be added after stove constant temperature 2h afterwards, stove is brought rapidly up to 1200 DEG C -1400 DEG C again afterwards；
D, constant temperature after stove constant temperature 3h is quenched to 180-210 DEG C afterwards；
E, be finally putting into 160 DEG C -180 DEG C of tempering furnace be incubated 2h after be cooled to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710265645.1A CN106995899A (en) | 2017-04-21 | 2017-04-21 | A kind of spheroidal graphite cast-iron and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710265645.1A CN106995899A (en) | 2017-04-21 | 2017-04-21 | A kind of spheroidal graphite cast-iron and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106995899A true CN106995899A (en) | 2017-08-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107287498A (en) * | 2017-08-02 | 2017-10-24 | 马鞍山市万鑫铸造有限公司 | Ferrite nodular cast iron and its gravity foundry technology |
| CN107723581A (en) * | 2017-08-23 | 2018-02-23 | 宁波市恒源铸造有限公司 | Corrosion resistant ductile iron and its casting method |
| CN110117749A (en) * | 2019-05-07 | 2019-08-13 | 徐州天太机械制造有限公司 | A kind of spheroidal graphite casting high strength alloy material and preparation method thereof |
| CN110423865A (en) * | 2019-08-23 | 2019-11-08 | 宁国市华丰耐磨材料有限公司 | A kind of heat treatment method of Austria's iron body ductile iron abrading-ball |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1560608A1 (en) * | 1988-02-11 | 1990-04-30 | Белорусский Политехнический Институт | Cast iron |
| RU2307188C1 (en) * | 2006-03-02 | 2007-09-27 | Юлия Алексеевна Щепочкина | Cast iron |
| CN101407885A (en) * | 2008-11-14 | 2009-04-15 | 辛彦 | High tenacity corrosion resistant ductile iron material |
| CN104073713A (en) * | 2014-07-28 | 2014-10-01 | 宁国市南方耐磨材料有限公司 | Bainite ductile iron grinding ball |
| CN105950955A (en) * | 2016-05-31 | 2016-09-21 | 含山县兴达球墨铸铁厂 | Nodular cast iron for vehicle speed reducer and preparation process of nodular cast iron |
-
2017
- 2017-04-21 CN CN201710265645.1A patent/CN106995899A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1560608A1 (en) * | 1988-02-11 | 1990-04-30 | Белорусский Политехнический Институт | Cast iron |
| RU2307188C1 (en) * | 2006-03-02 | 2007-09-27 | Юлия Алексеевна Щепочкина | Cast iron |
| CN101407885A (en) * | 2008-11-14 | 2009-04-15 | 辛彦 | High tenacity corrosion resistant ductile iron material |
| CN104073713A (en) * | 2014-07-28 | 2014-10-01 | 宁国市南方耐磨材料有限公司 | Bainite ductile iron grinding ball |
| CN105950955A (en) * | 2016-05-31 | 2016-09-21 | 含山县兴达球墨铸铁厂 | Nodular cast iron for vehicle speed reducer and preparation process of nodular cast iron |
Non-Patent Citations (1)
| Title |
|---|
| 吴德海著: "《球墨铸铁》", 30 November 2006, 中国水利水电出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107287498A (en) * | 2017-08-02 | 2017-10-24 | 马鞍山市万鑫铸造有限公司 | Ferrite nodular cast iron and its gravity foundry technology |
| CN107723581A (en) * | 2017-08-23 | 2018-02-23 | 宁波市恒源铸造有限公司 | Corrosion resistant ductile iron and its casting method |
| CN110117749A (en) * | 2019-05-07 | 2019-08-13 | 徐州天太机械制造有限公司 | A kind of spheroidal graphite casting high strength alloy material and preparation method thereof |
| CN110423865A (en) * | 2019-08-23 | 2019-11-08 | 宁国市华丰耐磨材料有限公司 | A kind of heat treatment method of Austria's iron body ductile iron abrading-ball |
| CN110423865B (en) * | 2019-08-23 | 2021-05-25 | 宁国市华丰耐磨材料有限公司 | Heat treatment method of ausferrite nodular cast iron grinding ball |
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Application publication date: 20170801 |