CN1900340A - Cast state high strength high extensibility nodular cast iron material - Google Patents
Cast state high strength high extensibility nodular cast iron material Download PDFInfo
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- CN1900340A CN1900340A CN 200610045544 CN200610045544A CN1900340A CN 1900340 A CN1900340 A CN 1900340A CN 200610045544 CN200610045544 CN 200610045544 CN 200610045544 A CN200610045544 A CN 200610045544A CN 1900340 A CN1900340 A CN 1900340A
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- cast iron
- iron material
- ductile cast
- foundry goods
- high strength
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Abstract
The cast state high strength and high extensibility nodular cast iron material consists of C 3.5-3.8 wt%, Si 2.6-31 wt%, Mn not more than 0.3 wt%, S not more than 0.03 wt%, P not more than 0.05 wt%, except Fe. The nodular cast iron material is produced through compounding material, smelting in an electric furnace, nodulizing, inoculation, and casting. It has high tensile strength and high extensibility, and may be used in making parts in driving mechanism and impacted parts in heavy truck.
Description
Technical field
The present invention relates to ductile cast iron material, belong to the cast material technical field.
Background technology
Because in recent years along with the improvement of traffic environment, heavy-duty car develops to the direction of large-tonnage, high tractive force, mechanical property requirement to some the transmission component and the component that are hit is more and more higher, and particularly drive axle axle housing foundry goods requires to have higher-strength and good elongation.Present ductile cast iron material needs of incompatibility heavy-duty car component aspect intensity and elongation, and cost height.China's ductile cast iron material national standard has the different materials trades mark such as QT400-18, QT450-10, QT600-3 at present, and the heavy-duty car component are generally selected QT450-10 and two kinds of trades mark of QT600-3 for use, the tensile strength sigma of QT450-10
b〉=450MPa, δ 〉=10%, the σ of QT600-3
b〉=600MPa, δ 〉=3%.
Summary of the invention
The present invention is directed to the deficiency that existing ductile cast iron material exists on mechanical property, the ductile cast iron material that a kind of cost is low, have high strength and high elongation rate is provided.
Each component and the weight percent thereof of high strength high extensibility ductile cast iron material are:
C 3.5～3.8%, and Si 2.6～3.1%, Mn≤0.3%, and S≤0.03%, P≤0.05%, surplus is Fe.
Above-mentioned ductile cast iron material is by batching, electrosmelting, spheroidizing, preparation process, and by phenolic sand molding coremaking, casting makes, and concrete steps are:
1 according to each given compositional range, the pig iron and the various required alloying ingredient used with spheroidal graphite cast iron;
2 material that prepare drop in the electric furnace and carry out melting;
3 melted molten iron carry out spheroidizing, breed, and pour in the resin bonded sand mould that makes in advance, unpack below the moulding postcooling to 500 ℃, promptly get the foundry goods of required material.
The as cast condition mechanical property of ductile cast iron material foundry goods of the present invention reaches tensile strength sigma
b〉=480MPa, yield strength σ
0.2〉=310MPa, elongation δ 〉=20%, cloth formula hardness HB150--200, foundry goods metallographic structure matrix is ferrite 〉=85%, cementite≤3%, iron phosphide eutectic≤1%, this material can satisfy the requirement of the high tractive force heavy-duty car of large-tonnage drive axle.
Ductile cast iron material of the present invention has high-tensile, and high elongation rate can satisfy the mechanical property requirement of transmission component and the component that are hit on large-tonnage, the high tractive force heavy-duty car, can be used for bearing the multiple component of high strength, high tenacity.
Embodiment
Embodiment 1
Each component and the weight percent thereof of high strength high extensibility ductile cast iron material are: C 3.55%, and Si 3.1%, and Mn 0.28%, and S 0.02%, P0.04%, and surplus is Fe.
Above-mentioned ductile cast iron material according to given each compositional range batching, is used electrosmelting then, carry out spheroidizing again, breed, pour in the resin bonded sand mould that makes in advance, unpack below the moulding postcooling to 500 ℃, promptly get the foundry goods of required material.
The as cast condition mechanical property that records above-mentioned ductile cast iron material foundry goods is: tensile strength sigma
b=486MPa, yield strength σ
0.2=329MPa, δ=22.6%, cloth formula hardness HB172, foundry goods metallographic structure matrix is ferrite=90%, cementite≤1%, iron phosphide eutectic≤1%.
Embodiment 2
Each component and the weight percent thereof of high strength high extensibility ductile cast iron material are: C 3.68%, and Si 2.96%, and Mn 0.2%, and S 0.02%, P0.04%, and surplus is Fe.
Above-mentioned ductile cast iron material according to given each compositional range batching, is used electrosmelting then, carry out spheroidizing again, breed, pour in the resin bonded sand mould that makes in advance, unpack below the moulding postcooling to 500 ℃, promptly get the foundry goods of required material.
The as cast condition mechanical property that records above-mentioned ductile cast iron material foundry goods is: tensile strength sigma
b=495MPa, yield strength σ
0.2=327MPa, δ=21.8%, cloth formula hardness HB178, foundry goods metallographic structure matrix is ferrite=90%, cementite≤1%, iron phosphide eutectic≤1%.
Embodiment 3
Each component and the weight percent thereof of high strength high extensibility ductile cast iron material are: C 3.8%, Si2.82%, and Mn 0.24%, and S 0.03%, P0.04%, surplus is Fe.
Above-mentioned ductile cast iron material according to given each compositional range batching, is used electrosmelting then, carry out spheroidizing again, breed, pour in the resin bonded sand mould that makes in advance, unpack below the moulding postcooling to 500 ℃, promptly get the foundry goods of required material.
The as cast condition mechanical property that records above-mentioned ductile cast iron material foundry goods is: tensile strength sigma
b=502MPa, yield strength σ
0.2=331MPa, δ=20.1%, cloth formula hardness HB 174, foundry goods metallographic structure matrix is cable body=85%, cementite≤2%, iron phosphide eutectic≤1%.
Claims (3)
1. as cast condition high strength high extensibility ductile cast iron material, it is characterized in that: each component and weight percent thereof are: C 3.5～3.8%, and Si 2.6～3.1%, Mn≤0.3%, S≤0.03%, P≤0.05%, surplus is Fe.
2. as cast condition high strength high extensibility ductile cast iron material according to claim 1 is characterized in that: described ductile cast iron material is by batching, electrosmelting, spheroidizing, preparation process, and by phenolic sand molding coremaking, casting makes, and concrete steps are:
(1) according to each given compositional range, the pig iron and the various required alloying ingredient used with spheroidal graphite cast iron;
(2) carrying out melting in the material input electric furnace for preparing;
(3) melted molten iron is carried out spheroidizing, breeds, pour in the resin bonded sand mould that makes in advance, unpack below the moulding postcooling to 500 ℃, promptly get the foundry goods of required material.
3. as cast condition high strength high extensibility ductile cast iron material according to claim 1 is characterized in that: the as cast condition mechanical property of described ductile cast iron material foundry goods is a tensile strength sigma
b〉=480MPa, yield strength σ
0.2〉=310MPa, δ 〉=20%, cloth formula hardness HB150--200, foundry goods metallographic structure matrix is ferrite 〉=85%, cementite≤3%, iron phosphide eutectic≤1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610045544 CN1900340A (en) | 2006-07-21 | 2006-07-21 | Cast state high strength high extensibility nodular cast iron material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610045544 CN1900340A (en) | 2006-07-21 | 2006-07-21 | Cast state high strength high extensibility nodular cast iron material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1900340A true CN1900340A (en) | 2007-01-24 |
Family
ID=37656323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610045544 Pending CN1900340A (en) | 2006-07-21 | 2006-07-21 | Cast state high strength high extensibility nodular cast iron material |
Country Status (1)
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104302A (en) * | 2010-12-28 | 2011-06-22 | 陈长根 | Method for casting marine motor shell by ductile cast iron |
| CN102485931A (en) * | 2010-12-06 | 2012-06-06 | 沈阳铸造研究所 | Magnetic cast iron and casting process of casting made of the material |
| CN101775532B (en) * | 2009-12-29 | 2012-11-28 | 江苏一汽铸造股份有限公司 | Non-tombarthite ferrite ball iron and preparing method thereof |
| CN105861915A (en) * | 2016-06-27 | 2016-08-17 | 含山县兴达球墨铸铁厂 | Ferritic spheroidal graphite cast iron and preparation method thereof |
| CN107326258A (en) * | 2017-06-30 | 2017-11-07 | 西安理工大学 | A kind of following minor diameter Ductile iron bars of diameter 25mm and preparation method thereof |
| CN109355553A (en) * | 2018-09-27 | 2019-02-19 | 陕西柴油机重工有限公司 | A kind of high-intensitive high hard resistance to room temperature impact ductile cast iron casting of high tenacity |
| CN115839399A (en) * | 2022-09-14 | 2023-03-24 | 广东极亚精机科技有限公司 | Harmonic speed reducer rigid gear and preparation method and application thereof |
-
2006
- 2006-07-21 CN CN 200610045544 patent/CN1900340A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775532B (en) * | 2009-12-29 | 2012-11-28 | 江苏一汽铸造股份有限公司 | Non-tombarthite ferrite ball iron and preparing method thereof |
| CN102485931A (en) * | 2010-12-06 | 2012-06-06 | 沈阳铸造研究所 | Magnetic cast iron and casting process of casting made of the material |
| CN102485931B (en) * | 2010-12-06 | 2014-06-18 | 沈阳铸造研究所 | Magnetic cast iron and casting process of casting made of the material |
| CN102104302A (en) * | 2010-12-28 | 2011-06-22 | 陈长根 | Method for casting marine motor shell by ductile cast iron |
| CN105861915A (en) * | 2016-06-27 | 2016-08-17 | 含山县兴达球墨铸铁厂 | Ferritic spheroidal graphite cast iron and preparation method thereof |
| CN107326258A (en) * | 2017-06-30 | 2017-11-07 | 西安理工大学 | A kind of following minor diameter Ductile iron bars of diameter 25mm and preparation method thereof |
| CN107326258B (en) * | 2017-06-30 | 2019-08-16 | 西安理工大学 | A kind of following minor diameter Ductile iron bar of diameter 25mm and preparation method thereof |
| CN109355553A (en) * | 2018-09-27 | 2019-02-19 | 陕西柴油机重工有限公司 | A kind of high-intensitive high hard resistance to room temperature impact ductile cast iron casting of high tenacity |
| CN115839399A (en) * | 2022-09-14 | 2023-03-24 | 广东极亚精机科技有限公司 | Harmonic speed reducer rigid gear and preparation method and application thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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