CN107385316A - High intensity, high-ductility, the spheroidal graphite cast-iron of resistance to thermal change and its manufacture method - Google Patents
High intensity, high-ductility, the spheroidal graphite cast-iron of resistance to thermal change and its manufacture method Download PDFInfo
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- CN107385316A CN107385316A CN201710595318.2A CN201710595318A CN107385316A CN 107385316 A CN107385316 A CN 107385316A CN 201710595318 A CN201710595318 A CN 201710595318A CN 107385316 A CN107385316 A CN 107385316A
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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
- C22C37/10—Cast-iron alloys containing aluminium or silicon
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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
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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
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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
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
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Abstract
The invention discloses high intensity, high-ductility, the spheroidal graphite cast-iron of resistance to thermal change and its manufacture method, is related to ductile cast iron material technical field.Percentage by weight including each composition is as follows：C：3.7~4.5%, Si：1.5~2.0%, Al：10.5~12.5%, Mo：3.3~4.5%, Cu：3.1~4.2%, Cr：0.23~0.32%, Mg：0.26~0.59%, Ni：2.17~2.73%, V：0.022~0.043%, Zn：2.12~3.21%, Hg：0.012~0.021%, Re：0.03~0.05%, P ＜ 0.12, S ＜ 0.03, remaining is Fe.The present invention carries out the preparation of alloy-steel casting by using multielement, realizes the high intensity, high-ductility, resistance to thermo-dependent properties of the spheroidal graphite cast-iron；Mode is bred using sealed iron liquid, so that Hg carries out the alloy with aluminium after temperature reduction, the resistance to thermo-dependent properties for realizing the spheroidal graphite cast-iron are synthesized with aluminium by Hg, when heat becomes larger, aluminium and Fe alloy are formed under Fe reduction by Hg aluminium alloys, further improve the high intensity of the spheroidal graphite cast-iron.
Description
Technical field
The invention belongs to ductile cast iron material technical field, more particularly to high intensity, high-ductility, the spheroidal graphite cast-iron of resistance to thermal change
And its manufacture method.
Background technology
Iron casting has almost been applied in all main industrial sectors, and the high search of these goals is strong
Degree, plasticity, toughness, wearability, the heat and mechanical shock of resistance to tight spheroidal graphite cast-iron weight, high temperature resistant or low temperature, corrosion-resistant and size
Stability etc..In order to meet that these changes of use condition, spheroidal graphite cast-iron have many trades mark, there is provided mechanical performance and physical
One very wide scope of energy.
Such as most of ductile cast iron castings of International Organization for standardization's ISO1083 defineds, mainly given birth to non-alloyed state
Production.Obviously, this scope is more than 800 newton/square millimeter including tensile strength, and elongation percentage is the 2% high intensity trade mark.Separately
One is extremely the high-ductility trade mark, and its elongation percentage is more than 17%, and relatively low (minimum 370 newton/square milli of corresponding intensity
Rice).Intensity and elongation percentage are not unique basis that designer selects material, and other conclusive important performances also include bending
Take intensity, modulus of elasticity, wearability and fatigue strength, hardness and impact property etc..In addition, corrosion resistance and anti-oxidant and electromagnetism
Performance may is that key for designer.In order to meet these Special uses, one group of austenite spheroidal iron is have developed, is generally Ni
One Resis magnesium irons.These austenite spheroidal irons, mainly with nickel, chromium and alloying of manganese, and it is included in international standard.
For pearlite type spheroidal graphite cast-iron, there is middle high equal strength, medium toughness and plasticity, combination property is higher, wearability
With the features such as damping good, Production Practice of Casting Technologies is good.Its performance can be changed by various heat treatments.It is mainly used in various dynamic
The parts such as power machinery bent axle, camshaft, connecting shaft, connecting rod, gear, clutch disc, hydraulic cylinder.
The content of the invention
It is an object of the invention to provide high intensity, high-ductility, the spheroidal graphite cast-iron of resistance to thermal change and its manufacture method.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions：
The present invention is high intensity, high-ductility, the spheroidal graphite cast-iron of resistance to thermal change, including the percentage by weight of each composition is as follows：C：3.7
~4.5%, Si：1.5~2.0%, Al：10.5~12.5%, Mo：3.3~4.5%, Cu：3.1~4.2%, Cr：0.23~
0.32%, Mg：0.26~0.59%, Ni：2.17~2.73%, V：0.022~0.043%, Zn：2.12~3.21%, Hg：
0.012~0.021%, Re：0.03~0.05%, P ＜ 0.12, S ＜ 0.03, remaining is Fe.
Further, the following C of percentage by weight of each composition：3.7%, Si：1.5%, Al：10.5%, Mo：
3.3%, Cu：3.12%, Cr：0.23%, Mg：0.26%, Ni：2.17%, V：0.022~%, Zn：2.12%, Hg：
0.012%, Re：0.03%, P ＜ 0.12, S ＜ 0.03, remaining is Fe.
Further, the following C of percentage by weight of each composition：4.1%, Si：1.7%, Al：10.95 Mo：
3.8%, Cu：3.6%, Cr：0.28%, Mg：0.31%, Ni：2.22%, V：0.025%, Zn：2.52%, Hg：0.016%,
Re：0.04%, P ＜ 0.12, S ＜ 0.03, remaining is Fe.
Further, the following C of percentage by weight of each composition：4.35%, Si：1.85%, Al：11.15%, Mo：
4.3%, Cu：4.1~4.2%, Cr：0.31%, Mg：0.46%, Ni：2.67%, V：0.032%, Zn：3.12~3.21%,
Hg：0.018%, Re：0.05%, P ＜ 0.12, S ＜ 0.03, remaining is Fe.
High intensity, high-ductility, the manufacture method for the spheroidal graphite cast-iron of resistance to thermal change, including following process：
SS01 is by each component according to the following C of percentage by weight：3.7~4.5%, Si：1.5~2.0%, Al：10.5~
12.5%, Mo：3.3~4.5%, Cu：3.1~4.2%, Cr：0.23~0.32%, Mg：0.26~0.59%, Ni：2.17~
2.73%, V：0.022~0.043%, Hg：0.012~0.021%, Zn：2.12~3.21%, Re：0.03~0.05%, P ＜
0.12, S ＜ 0.03, remaining is Fe, obtains original iron melt；
SS02 works as 1641 DEG C~1687 DEG C of original iron melt tapping temperature in SS01, encapsulation process is carried out after coming out of the stove, by adopting
With method poured in bag add the nodulizer of original iron melt weight 2.1~2.6%, 0.36~0.41% inovulant and 0.36~
0.39% copper；
SS03 is down to 1350 DEG C~1410 DEG C when SS02 Central Plains bonded hard ferrite magnet, and current-following inoculation adds original iron melt weight 0.33
~0.37% inovulant；
SS04 obtains iron liquid, sealed cast, when temperature is reduced to 100 DEG C~300 DEG C, opens sealing；
Wherein, the inovulant is silicon iron inoculator, forms the iron for 73.5wt% silicon and 26.5wt%；
The percentage by weight of each component is Mg in nodulizer：5.0~7.0%, Re：3.3~3.5%, Si：28~31%,
Cr：0.5~0.6%, Al：12.9~21.2%, Ti：0.4, remaining is Fe；
Instant inoculation is carried out with the inovulant of iron liquid weight 0.05% during iron liquid casting, pours the time at 5-13 points
Clock；
2/3rds of original iron melt are poured spheroidising is carried out in bag, remaining iron liquid is added after original iron melt calmness in bag.
The invention has the advantages that：
1st, the present invention carries out the preparation of alloy-steel casting by using multielement, passes through Al, Mo, Cr, Cu, Mg, Hg multielement
Realize the high intensity, high-ductility, resistance to thermo-dependent properties of the spheroidal graphite cast-iron.
2nd, the present invention breeds mode by using sealed iron liquid so that Hg carries out the conjunction with aluminium after temperature reduction
Gold, the resistance to thermo-dependent properties for realizing the spheroidal graphite cast-iron are synthesized with aluminium by Hg, when heat becomes larger, pass through Hg aluminium alloys going back in Fe
Aluminium and Fe alloy are formed under original, further improves the high intensity of the spheroidal graphite cast-iron.
Certainly, any product for implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, all other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
Embodiment one
In middle frequency furnace steel scrap, the pig iron, foundry returns and alloy, original iron melt essential element after melting are added by ingredient
Chemical composition (wt%) C：3.7%, Si：1.5%, Al：10.5%, Mo：3.3%, Cu：3.12%, Cr：0.23%, Mg：
0.26%, Ni：2.17%, V：0.022~%, Zn：2.12%, Hg：0.012%, Re：0.03%, P ＜ 0.12, S ＜ 0.03,
Remaining is Fe, obtains original iron melt；1641 DEG C~1687 DEG C of original iron melt tapping temperature, encapsulation process is carried out after coming out of the stove, by using
Method is poured in bag and adds the nodulizer of original iron melt weight 2.1~2.6%, 0.36~0.41% inovulant and 0.36~0.39%
Copper；When original iron melt temperature is down to 1350 DEG C~1410 DEG C, and current-following inoculation adds the pregnant of original iron melt weight 0.33~0.37%
Educate agent；Obtained iron liquid, sealed cast, when temperature is reduced to 100 DEG C~300 DEG C, open sealing.
Wherein, inovulant is silicon iron inoculator, forms the iron for 73.5wt% silicon and 26.5wt%；
The percentage by weight of each component is Mg in nodulizer：5.0~7.0%, Re：3.3~3.5%, Si：28~31%,
Cr：0.5~0.6%, Al：12.9~21.2%, Ti：0.4, remaining is Fe；
Instant inoculation is carried out with the inovulant of iron liquid weight 0.05% during iron liquid casting, pours the time at 5-13 points
Clock；
2/3rds of original iron melt are poured spheroidising is carried out in bag, remaining iron liquid is added after original iron melt calmness in bag.
Embodiment two
In middle frequency furnace steel scrap, the pig iron, foundry returns and alloy, original iron melt essential element after melting are added by ingredient
Chemical composition (wt%) C：4.1%, Si：1.7%, Al：10.95 Mo：3.8%, Cu：3.6%, Cr：0.28%, Mg：
0.31%, Ni：2.22%, V：0.025%, Zn：2.52%, Hg：0.016%, Re：0.04%, P ＜ 0.12, S ＜ 0.03, its
Remaining is Fe, obtains original iron melt；1641 DEG C~1687 DEG C of original iron melt tapping temperature, carries out encapsulation process, by using bag after coming out of the stove
Inside pour method and add the nodulizer of original iron melt weight 2.1~2.6%, 0.36~0.41% inovulant and 0.36~0.39%
Copper；When original iron melt temperature is down to 1350 DEG C~1410 DEG C, and current-following inoculation adds breeding for original iron melt weight 0.33~0.37%
Agent；Obtained iron liquid, sealed cast, when temperature is reduced to 100 DEG C~300 DEG C, open sealing.
Wherein, inovulant is silicon iron inoculator, forms the iron for 73.5wt% silicon and 26.5wt%；
The percentage by weight of each component is Mg in nodulizer：5.0~7.0%, Re：3.3~3.5%, Si：28~31%,
Cr：0.5~0.6%, Al：12.9~21.2%, Ti：0.4, remaining is Fe；
Instant inoculation is carried out with the inovulant of iron liquid weight 0.05% during iron liquid casting, pours the time at 5-13 points
Clock；
2/3rds of original iron melt are poured spheroidising is carried out in bag, remaining iron liquid is added after original iron melt calmness in bag.
Embodiment three
In middle frequency furnace steel scrap, the pig iron, foundry returns and alloy, original iron melt essential element after melting are added by ingredient
Chemical composition (wt%) C：4.35%, Si：1.85%, Al：11.15%, Mo：4.3%, Cu：4.1~4.2%, Cr：0.31%,
Mg：0.46%, Ni：2.67%, V：0.032%, Zn：3.12~3.21%, Hg：0.018%, Re：0.05%, P ＜ 0.12, S
＜ 0.03, remaining is Fe, obtains original iron melt；1641 DEG C~1687 DEG C of original iron melt tapping temperature, encapsulation process is carried out after coming out of the stove, and is led to
Cross using method poured in bag add the nodulizer of original iron melt weight 2.1~2.6%, 0.36~0.41% inovulant and 0.36~
0.39% copper；When original iron melt temperature is down to 1350 DEG C~1410 DEG C, and current-following inoculation add original iron melt weight 0.33~
0.37% inovulant；Obtained iron liquid, sealed cast, when temperature is reduced to 100 DEG C~300 DEG C, open sealing.
Wherein, inovulant is silicon iron inoculator, forms the iron for 73.5wt% silicon and 26.5wt%；
The percentage by weight of each component is Mg in nodulizer：5.0~7.0%, Re：3.3~3.5%, Si：28~31%,
Cr：0.5~0.6%, Al：12.9~21.2%, Ti：0.4, remaining is Fe；
Instant inoculation is carried out with the inovulant of iron liquid weight 0.05% during iron liquid casting, pours the time at 5-13 points
Clock；
2/3rds of original iron melt are poured spheroidising is carried out in bag, remaining iron liquid is added after original iron melt calmness in bag.
The preparation of alloy-steel casting is carried out by using multielement, is realized by Al, Mo, Cr, Cu, Mg, Hg multielement
The high intensity of the spheroidal graphite cast-iron, high-ductility, resistance to thermo-dependent properties；Mode is bred using sealed iron liquid so that Hg drops in temperature
The alloy with aluminium is carried out after low, synthesizes the resistance to thermo-dependent properties for realizing the spheroidal graphite cast-iron with aluminium by Hg, when heat becomes larger, is passed through
Hg aluminium alloys form aluminium and Fe alloy under Fe reduction, further improve the high intensity of the spheroidal graphite cast-iron.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
At least one implementation of the present invention is contained in reference to specific features, structure, material or the feature that the embodiment or example describe
In example or example.In this manual, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.
Moreover, specific features, structure, material or the feature of description can close in any one or more embodiments or example
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All details are described, it is only described embodiment also not limit the invention.Obviously, according to the content of this specification,
It can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and its four corner and equivalent.
Claims (5)
1. high intensity, high-ductility, the spheroidal graphite cast-iron of resistance to thermal change, it is characterised in that the percentage by weight of each composition is as follows：
C：3.7~4.5%, Si：1.5~2.0%, Al：10.5~12.5%, Mo：3.3~4.5%, Cu：3.1~4.2%,
Cr：0.23~0.32%, Mg：0.26~0.59%, Ni：2.17~2.73%, V：0.022~0.043%, Zn：2.12~
3.21%, Hg：0.012~0.021%, Re：0.03~0.05%, P ＜ 0.12, S ＜ 0.03, remaining is Fe.
2. high intensity according to claim 1, high-ductility, the spheroidal graphite cast-iron of resistance to thermal change, it is characterised in that the weight of each composition
The following C of percentage：3.7%, Si：1.5%, Al：10.5%, Mo：3.3%, Cu：3.12%, Cr：0.23%, Mg：0.26%,
Ni：2.17%, V：0.022~%, Zn：2.12%, Hg：0.012%, Re：0.03%, P ＜ 0.12, S ＜ 0.03, remaining is
Fe。
3. high intensity according to claim 1, high-ductility, the spheroidal graphite cast-iron of resistance to thermal change, it is characterised in that the weight of each composition
The following C of percentage：4.1%, Si：1.7%, Al：10.95 Mo：3.8%, Cu：3.6%, Cr：0.28%, Mg：0.31%, Ni：
2.22%, V：0.025%, Zn：2.52%, Hg：0.016%, Re：0.04%, P ＜ 0.12, S ＜ 0.03, remaining is Fe.
4. high intensity according to claim 1, high-ductility, the spheroidal graphite cast-iron of resistance to thermal change and its manufacture method, it is characterised in that
The following C of percentage by weight of each composition：4.35%, Si：1.85%, Al：11.15%, Mo：4.3%, Cu：4.1~4.2%,
Cr：0.31%, Mg：0.46%, Ni：2.67%, V：0.032%, Zn：3.12~3.21%, Hg：0.018%, Re：0.05%,
P ＜ 0.12, S ＜ 0.03, remaining is Fe.
5. high intensity, high-ductility, the manufacture method for the spheroidal graphite cast-iron of resistance to thermal change as described in claim 1-4 is any one, its feature
It is, including following process：
SS01 is by each component according to the following C of percentage by weight：3.7~4.5%, Si：1.5~2.0%, Al：10.5~12.5%,
Mo：3.3~4.5%, Cu：3.1~4.2%, Cr：0.23~0.32%, Mg：0.26~0.59%, Ni：2.17~2.73%,
V：0.022~0.043%, Hg：0.012~0.021%, Zn：2.12~3.21%, Re：0.03~0.05%, P ＜ 0.12, S
＜ 0.03, remaining is Fe, obtains original iron melt；
SS02 works as 1641 DEG C~1687 DEG C of original iron melt tapping temperature in SS01, encapsulation process is carried out after coming out of the stove, by using bag
Inside pour method and add the nodulizer of original iron melt weight 2.1~2.6%, 0.36~0.41% inovulant and 0.36~0.39%
Copper；
SS03 is down to 1350 DEG C~1410 DEG C when SS02 Central Plains bonded hard ferrite magnet, and current-following inoculation add original iron melt weight 0.33~
0.37% inovulant；
SS04 obtains iron liquid, sealed cast, when temperature is reduced to 100 DEG C~300 DEG C, opens sealing；
Wherein, the inovulant is silicon iron inoculator, forms the iron for 73.5wt% silicon and 26.5wt%；
The percentage by weight of each component is Mg in nodulizer：5.0~7.0%, Re：3.3~3.5%, Si：28~31%, Cr：
0.5~0.6%, Al：12.9~21.2%, Ti：0.4, remaining is Fe；
Instant inoculation is carried out with the inovulant of iron liquid weight 0.05% during iron liquid casting, pours the time in 5-13 minutes；
2/3rds of original iron melt are poured spheroidising is carried out in bag, remaining iron liquid is added after original iron melt calmness in bag.
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| CN106148808A (en) * | 2016-06-29 | 2016-11-23 | 华北水利水电大学 | A kind of cold work die steel and preparation method thereof |
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2017
- 2017-07-20 CN CN201710595318.2A patent/CN107385316A/en active Pending
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| SU1152971A1 (en) * | 1983-11-16 | 1985-04-30 | Mogilevskij Otdel Fiz T I | Cast iron |
| CN102644017A (en) * | 2012-04-27 | 2012-08-22 | 福建省铁城精密铸造有限公司 | Dewaxing casting process for nodular iron castings |
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| CN106148808A (en) * | 2016-06-29 | 2016-11-23 | 华北水利水电大学 | A kind of cold work die steel and preparation method thereof |
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Application publication date: 20171124 |