CN1232671C - As-cast state high yield strength nodular cast iron - Google Patents
As-cast state high yield strength nodular cast iron Download PDFInfo
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- CN1232671C CN1232671C CN 200310114496 CN200310114496A CN1232671C CN 1232671 C CN1232671 C CN 1232671C CN 200310114496 CN200310114496 CN 200310114496 CN 200310114496 A CN200310114496 A CN 200310114496A CN 1232671 C CN1232671 C CN 1232671C
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- cast iron
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The present invention particularly relates to a cast nodular cast iron material with high yield strength, which belongs to the technical field of cast materials. The cast nodular cast iron material is applied to the differential casing of a driving axle with large rated tonnage and high traction force on a heavy truck. The nodular cast iron material contains the following chemical compositions, in weight percentages, 3.5 to 3.8% of C, 2.0 to 2.5% of Si, 0.4 to 0.6% of Mn, 0.5 to 0.7% of Cu, 0.25 to 0.35% of Mo, 0.3 to 0.5% of Ni, less than or equal to 0.06% of P, less than or equal to 0.03% of S, less than or equal to 0.05% of Ti, less than or equal to 0.1% of Cr and balance of Fe. With the advantages of high yield strength and high elongation rate, the nodular cast iron material can satisfy requirements of upper transmission parts and shocked parts of a driving axle on a heavy truck with large rated tonnage and high traction force.
Description
(1) technical field under
The invention belongs to the technical field of cast material, particularly a kind of as cast condition high-yield strength ductile cast iron material.
(2) background technology
Because in recent years along with the improvement of traffic environment, heavy-duty car is to large-tonnage, the direction of high tractive force develops, and to some driving members, the requirement of the part that is hit is more and more higher.Particularly the differential carrier class foundry goods on the 180 serial drive axles requires to have high-yield strength and rate elongation preferably.The material that can reach above-mentioned performance requriements is less, and price is more expensive but at present.
(3) summary of the invention
The present invention provides a kind of ductile cast iron material with high-yield strength and high elongation rate in order to overcome above deficiency.
The present invention realizes by following measure:
The invention discloses a kind of as cast condition high-yield strength ductile cast iron material, the weight percent of its chemical ingredients is,
C：3.5～3.8％， Si：2.0～2.5％，
Mn：0.4～0.6％， Cu：0.5～0.7％，
Mo：0.25～0.35％，?Ni：0.3～0.5％，
P≤0.06％， S≤0.03％，
Ti≤0.05％， Cr≤0.1％
Surplus is Fe.
Cast iron materials of the present invention, its as-cast characteristic are σ
b〉=620.5MPa, σ
0.2〉=430.2MPa, δ 〉=6%, Brinell hardness BH=228～285; The foundry goods matrix is perlite 〉=80%, cementite≤1%.This material can satisfy the requirement of driving member, the part that is hit on large-tonnage, the high tractive force heavy goods vehicles drive axle.
Material of the present invention is by batching, and electrosmelting breeds, the nodularization process, is made by sand mold casting.Its production method is:
1. according to given chemical ingredients scope, with nodular pig iron and various required alloying ingredient.
2. the material for preparing is dropped in the electric furnace and carry out melting.
Melted molten iron breed, nodularization, pour in the sand mold that makes in advance, moulding cooling promptly gets the foundry goods of required material.
Ductile cast iron material of the present invention has high-yield strength, and high elongation rate can satisfy the requirement of driving member, the part that is hit on large-tonnage, the high tractive force heavy-duty car drive axle.
(4) embodiment
Embodiment 1
Present embodiment is a kind of as cast condition high-yield strength ductile cast iron material, and the weight percent of its chemical ingredients is,
C：3.6％， Si：2.4％，
Mn：0.4％， Cu：0.64％，
Mo：0.30％， Ni：0.33％，
P：0.05％， S：0.02％，
Ti：0.04％， Cr：0.05％
Surplus is Fe.
Above-mentioned various required alloying ingredients are mixed with nodular pig iron, drop in the electric furnace, carry out melting.Melted molten iron breed, nodularization, pour in the sand mold that makes in advance, moulding cooling promptly gets the foundry goods of required material.
Above-mentioned foundry goods is measured, and the result is as follows: σ
b=673.2MPa, σ
0.2=457.2MPa δ=7.8%, Brinell hardness BH=275; The foundry goods matrix is perlite=90%, cementite≤1%.
Embodiment 2:
Present embodiment is a kind of as cast condition high-yield strength ductile cast iron material, and the weight percent of its chemical ingredients is,
C：3.51％， Si：2.23％，
Mn：0.41％， Cu：0.6％，
Mo：0.28％， Ni：0.45％，
P＝0.04％， S＝0.024％，
Ti＝0.05％， Cr＝0.053％
Surplus is Fe.
Above-mentioned various required alloying ingredients are mixed with nodular pig iron, drop in the electric furnace, carry out melting.Melted molten iron breed, nodularization, pour in the sand mold that makes in advance, moulding cooling promptly gets the foundry goods of required material.
Above-mentioned foundry goods is measured, and its result is as follows: σ
b=666.3, σ
0.2=430.9MPa, δ=7.8%, Brinell hardness BH=234; The foundry goods matrix is perlite=85%, cementite=0.5%.
Claims (2)
1. as cast condition high-yield strength ductile cast iron material is characterized in that: the weight percent of the chemical ingredients of described material is,
C：3.5～3.8％， Si：2.0～2.5％，
Mn：0.4～0.6％， Cu：0.5～0.7％，
Mo：0.25～0.35％，?Ni：0.3～0.5％，
P≤0.06％， S≤0.03％，
Ti≤0.05％， Cr≤0.1％
Surplus is Fe.
2. ductile cast iron material according to claim 1 is characterized in that: the foundry goods as-cast characteristic of described material is a tensile strength sigma
b〉=620.5MPa, yield strength σ
0.2〉=430.2MPa, δ 〉=6%, Brinell hardness BH=228～285; The foundry goods matrix is perlite 〉=80%, cementite≤1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310114496 CN1232671C (en) | 2003-12-19 | 2003-12-19 | As-cast state high yield strength nodular cast iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310114496 CN1232671C (en) | 2003-12-19 | 2003-12-19 | As-cast state high yield strength nodular cast iron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1554793A CN1554793A (en) | 2004-12-15 |
| CN1232671C true CN1232671C (en) | 2005-12-21 |
Family
ID=34337094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310114496 Expired - Fee Related CN1232671C (en) | 2003-12-19 | 2003-12-19 | As-cast state high yield strength nodular cast iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1232671C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465318C (en) * | 2005-06-10 | 2009-03-04 | 上海上大热欣科技发展有限公司 | CrMoCu alloy cast iron continuous casting section bar and manufacturing method thereof |
| CN100337770C (en) * | 2005-12-29 | 2007-09-19 | 江阴市吉鑫机械有限公司 | Casting method of large-toughness piece by ball-iron cast without Ni at low temperature |
| CN101792881A (en) * | 2010-03-18 | 2010-08-04 | 苏州凯贸铸造工业有限公司 | Method for manufacturing cast iron |
| CN102634720B (en) * | 2012-04-17 | 2015-07-22 | 扬州五亭桥缸套有限公司 | Nodular cast iron cylinder sleeve and manufacturing method thereof |
| CN104789853A (en) * | 2014-04-22 | 2015-07-22 | 天津虹冈铸钢有限公司 | Novel die cast ductile iron and fusion casting method thereof |
| CN105821292A (en) * | 2016-03-28 | 2016-08-03 | 繁昌县天和机械有限公司 | Method for preparing nanometer modified alloy nodular cast iron |
| CN108660363A (en) * | 2018-06-06 | 2018-10-16 | 含山县东山德雨球墨铸造厂 | A kind of nodular cast iron of Wear-resistant, high-temperature resistant |
| CN111020362B (en) * | 2019-12-31 | 2021-07-30 | 湖北腾升科技股份有限公司 | Nodular cast iron edging roll suitable for universal mill and manufacturing method thereof |
| CN111560560A (en) * | 2020-06-30 | 2020-08-21 | 河南中原吉凯恩气缸套有限公司 | Method for centrifugally casting high-strength nodular cast iron cylinder sleeve |
-
2003
- 2003-12-19 CN CN 200310114496 patent/CN1232671C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1554793A (en) | 2004-12-15 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: China Heavy-Duty Car Group Co., Ltd. Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051221 Termination date: 20141219 |
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| EXPY | Termination of patent right or utility model |