CN101503777A - Ductile iron for heavy type vehicle integrated axle housing - Google Patents
Ductile iron for heavy type vehicle integrated axle housing Download PDFInfo
- Publication number
- CN101503777A CN101503777A CNA2009100666331A CN200910066633A CN101503777A CN 101503777 A CN101503777 A CN 101503777A CN A2009100666331 A CNA2009100666331 A CN A2009100666331A CN 200910066633 A CN200910066633 A CN 200910066633A CN 101503777 A CN101503777 A CN 101503777A
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- CN
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- Prior art keywords
- axle housing
- cast iron
- spheroidal graphite
- graphite cast
- type vehicle
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention relates to spheroidal graphite cast iron for an integral axle housing of a heavy vehicle, which is characterized by comprising the following materials in portion by weight: 3.70 to 3.85 portions of carbon, 0 to 0.01 portion of sulfur, 0 to 0.035 portion of phosphorus, 0 to 0.50 portion of manganese, 2.1 to 2.4 portions of silicon, 0.5 to 0.8 portion of copper, 0.030 to 0.055 portion of magnesium and 0 to 0.030 portion of rare earths. The melting process of the spheroidal graphite cast iron adopts the melting mode of complete scrap steel and recarburizer to melt molten metal of the axle housing and does not use pig iron, namely the melting process adopts the melting mode of synthesis of cast iron. The spheroidal graphite cast iron for the integral axle housing of the heavy vehicle has high strength and high toughness; and the tensile strength reaches more than 600 MPa, and the elongation percentage reaches more than 5 percent, namely QT600-5.
Description
Technical field
The present invention relates to a kind of spheroidal graphite cast iron that is used for heavy type vehicle integrated axle housing, be applied to the novel cast iron materials of automobile axle housing.
Background technology
Automobile mostly is QT450-10 with the axle housing cast iron materials at present, along with the exploitation of heavy type vehicle integrated vehicle bridge, requires axle housing to possess high strength, high tenacity.The QT450-10 strength of materials can not meet design requirement, the cast iron materials national standard trade mark that meets its high strength requirement is QT600-3, but this toughness of material is on the low side, does not satisfy the design requirements of axle housing performance, therefore requires the ductile cast iron material of a kind of high strength of exploitation, high tenacity.
Summary of the invention
The object of the present invention is to provide a kind of spheroidal graphite cast iron that is used for heavy type vehicle integrated axle housing, its melting process adopts the melting mode of complete scrap steel+carburelant to carry out the molten metal melting of axle housing, does not use the pig iron, i.e. the melting mode of synthetic cast iron; Carburetting is effective, stabilised efficiency, and greying and inoculation(effect) are obvious; Full smelting scrap steel mode have hot metal purifying degree height, crystal grain tiny, be difficult for characteristics such as contractions, mechanical property is good, be the special-purpose production melting mode of assurance axle housing performance.
Technical scheme of the present invention is achieved in that the spheroidal graphite cast iron that is used for heavy type vehicle integrated axle housing, it is characterized in that: form by following material by weight: carbon 3.70～3.85, sulphur 0～0.01, phosphorus 0～0.035, manganese 0～0.50, silicon 2.1～2.4, copper 0.5～0.8, magnesium 0.030～0.055, rare earth 0～0.030.
Positively effect of the present invention is to possess high strength, high tenacity; Tensile strength reaches more than the 600MPa, and unit elongation reaches more than 5%, i.e. QT600-5.
Embodiment:
The present invention will be further described below in conjunction with embodiment:
Embodiment 1
This QT600-5 spheroidal graphite cast iron adopts the melting mode of medium-frequency induction furnace complete scrap steel+carburelant to carry out the molten metal melting of axle housing, by weight by carbon 3.75, and sulphur 0.009, phosphorus 0.033, manganese 0.14, silicon 2.38, copper 0.66, magnesium 0.035, rare earth 0.010.
Detect at axle housing sampling carrying out physics and chemistry.Detected result is as follows: the metallographic structure detected result is the nodularization classification: 3 grades; Graphite size fractionation: 6 grades; Matrix: perlite adds ferrite; Perlite quantity: pearl 65; Tensile strength Rm (N/mm
2) 660, regulation disproportional extension strength Rp
0.2(N/mm
2) 535, elongation after fracture A (%) 7.0, hardness (HBW) 217.
Embodiment 2
This QT600-5 spheroidal graphite cast iron adopts the melting mode of medium-frequency induction furnace complete scrap steel+carburelant to carry out the molten metal melting of axle housing, by weight by carbon 3.72, and sulphur 0.009, phosphorus 0.032, manganese 0.15, silicon 2.45, copper 0.70, magnesium 0.035, rare earth 0.012.
Detect at axle housing sampling carrying out physics and chemistry.Detected result is as follows: the metallographic structure detected result is the nodularization classification: 3 grades; Graphite size fractionation: 6 grades; Matrix: perlite adds ferrite; Perlite quantity: pearl 65; Tensile strength Rm (N/mm
2) 680, regulation disproportional extension strength Rp
0.2(N/mm
2) 545, elongation after fracture A (%) 8.0, hardness (HBW) 207.
Embodiment 3
This QT600-5 spheroidal graphite cast iron adopts the melting mode of medium-frequency induction furnace complete scrap steel+carburelant to carry out the molten metal melting of axle housing, by weight by carbon 3.75, and sulphur 0.009, phosphorus 0.030, manganese 0.15, silicon 2.37, copper 0.68, magnesium 0.035, rare earth 0.012.
Detect at axle housing sampling carrying out physics and chemistry.Detected result is as follows: the metallographic structure detected result is the nodularization classification: 3 grades; Graphite size fractionation: 6 grades; Matrix: perlite adds ferrite; Perlite quantity: pearl 65; Tensile strength Rm (N/mm
2) 660, regulation disproportional extension strength Rp
0.2(N/mm
2) 545, elongation after fracture A (%) 7.0, hardness (HBW) 207.
Embodiment 4
This QT600-5 spheroidal graphite cast iron adopts the melting mode of medium-frequency induction furnace complete scrap steel+carburelant to carry out the molten metal melting of axle housing, by weight by carbon 3.85, and sulphur 0.01, phosphorus 0.035, manganese 0.50, silicon 2.4, copper 0.8, magnesium 0.055, rare earth 0.030.
Detect at axle housing sampling carrying out physics and chemistry.Detected result is as follows: the metallographic structure detected result is the nodularization classification: 3 grades; Graphite size fractionation: 6 grades; Matrix: perlite adds ferrite; Perlite quantity: pearl 65; Tensile strength Rm (N/mm
2) 650, regulation disproportional extension strength Rp
0.2(N/mm
2) 540,
Elongation after fracture A (%) 7.0, hardness (HBW) 207.
Claims (1)
1, is used for the spheroidal graphite cast iron of heavy type vehicle integrated axle housing, it is characterized in that: form: carbon 3.70～3.85, sulphur 0～0.01 by following material by weight, phosphorus 0～0.035, manganese 0～0.50, silicon 2.1～2.4, copper 0.5～0.8, magnesium 0.030～0.055, rare earth 0～0.030.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100666331A CN101503777A (en) | 2009-03-13 | 2009-03-13 | Ductile iron for heavy type vehicle integrated axle housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100666331A CN101503777A (en) | 2009-03-13 | 2009-03-13 | Ductile iron for heavy type vehicle integrated axle housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101503777A true CN101503777A (en) | 2009-08-12 |
Family
ID=40976152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100666331A Pending CN101503777A (en) | 2009-03-13 | 2009-03-13 | Ductile iron for heavy type vehicle integrated axle housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101503777A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436775A (en) * | 2013-09-13 | 2013-12-11 | 宜昌奥力铸造有限责任公司 | Nodular cast iron material |
| CN103695591A (en) * | 2013-11-27 | 2014-04-02 | 福州文泰机械铸造有限公司 | Method for manufacturing component for wind power generation by using waste A3 steel disc |
| CN103981434A (en) * | 2014-05-28 | 2014-08-13 | 河南理工大学 | Preparation method for high-toughness nodular cast iron |
-
2009
- 2009-03-13 CN CNA2009100666331A patent/CN101503777A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436775A (en) * | 2013-09-13 | 2013-12-11 | 宜昌奥力铸造有限责任公司 | Nodular cast iron material |
| CN103436775B (en) * | 2013-09-13 | 2016-01-20 | 宜昌奥力铸造有限责任公司 | A kind of ductile cast iron material |
| CN103695591A (en) * | 2013-11-27 | 2014-04-02 | 福州文泰机械铸造有限公司 | Method for manufacturing component for wind power generation by using waste A3 steel disc |
| CN103981434A (en) * | 2014-05-28 | 2014-08-13 | 河南理工大学 | Preparation method for high-toughness nodular cast iron |
| CN103981434B (en) * | 2014-05-28 | 2015-12-02 | 河南理工大学 | A kind of preparation method of high tough spheroidal graphite cast iron |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA FAW CO., LTD. Free format text: FORMER OWNER: CHINESE AUTO GROUP CO NO.1 Effective date: 20111227 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20111227 Address after: 130011 Changchun Province, West New Economic and Technological Development Zone, Dongfeng Street, No. 2259, No. Applicant after: China FAW Group Corporation Address before: 130011 Dongfeng Street, Jilin, Changchun, No. 2259 Applicant before: China FAW Group Corporation |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090812 |