CN100532610C - High alloy iron, use of the material for structural components that are subject to high thermal stress and corresponding structural component - Google Patents
High alloy iron, use of the material for structural components that are subject to high thermal stress and corresponding structural component Download PDFInfo
- Publication number
- CN100532610C CN100532610C CNB2006800047923A CN200680004792A CN100532610C CN 100532610 C CN100532610 C CN 100532610C CN B2006800047923 A CNB2006800047923 A CN B2006800047923A CN 200680004792 A CN200680004792 A CN 200680004792A CN 100532610 C CN100532610 C CN 100532610C
- Authority
- CN
- China
- Prior art keywords
- thermal stress
- high thermal
- cast iron
- iron materials
- engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/16—Selection of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2530/00—Selection of materials for tubes, chambers or housings
- F01N2530/02—Corrosion resistive metals
- F01N2530/04—Steel alloys, e.g. stainless steel
Abstract
The invention relates to a high alloy iron that has an austenitic structure and a spherical graphite configuration and comprises the following components in percent by weight: carbon < 2.0 %, silicon 2.0 - 6.0 %, nickel 29 - 36 %, chrome 1.0 - 2.5 %, niobium 0.1 - 1.0 % and molybdenum 0.1 - 2.5 %. The invention also relates to the use of the cast iron material for structural components that are subject to high thermal stress, especially for exhaust manifolds and turbocharger housings of internal combustion engines of the individual or integrated type of construction. The invention finally relates to a structural component that is subject to high thermal stress, especially the exhaust system of an engine consisting of the aforementioned cast iron material.
Description
Technical field
The present invention is meant a kind of high alloy iron material with austenitic structure and spheroidal graphite configuration.Structure according to the present invention is particularly suitable for being in the engine those parts, particularly engine's exhaust system of big thermal stresses, but also is applicable to other member that is in high thermal stress.
Background of invention
Because the introduction of new combustion method, the thermal stresses of exhaust manifold and turbocharger housing rolls up.The exhaust temperature of modern Otto (Otto) engine, concrete, generally reach more than 1000 ℃.Stand the member of this thermal stresses, except that the high temperature resistibility, also must have high antiscale ability, good temperature fluctuation resistibility and low temperature expansion coefficient.Therefore, from prior art as can be known, the member that is in high thermal stress is made with cast steel.Though the latter satisfies above-mentioned requirements, very expensive, not to be well suited for being used for these members of produced in series therefore.
And, be the austenite cast iron alloy that the technical progress of nickel protection film (Ni-Resist) is recognized the spheroidal graphite configuration from trade name.These alloys are described as EN-GJSA XNi 35 (or be D5 according to ASTM 439) in EN 13835, except its good mechanical property, also have high heat resist power, good antiscale ability and very high temperature fluctuation resistibility.Here it is, and why in the prior art they are used to the engine parts that produced in series is in high thermal stress, are used in particular for the exhaust manifold and/or the turbocharger housing of high compression or supercharged engine.These alloys are economical, and casting easily.Shown as EN13835, they have had very high heat resist power, reach 1050 degrees centigrade.But, wall thickness less than 8 millimeters thin-wall member in, heat resist power drops to only about 950 ℃.In order to reduce the temperature to this highest tolerance level, carefully regulate injection and burning with expensive engine controller, this exhausts more fuel conversely once more.Therefore, be necessary that research and development under high-temperature condition, even their element has thin-walled, still have the material of higher resistibility.
Summary of the invention
Task of the present invention is to propose a kind of austenitic iron material with very high heat resist power, and no matter have the member of thin-walled.
With a kind of cast iron materials, its application and the member consistent with the feature of independent claim, this task has obtained solution.
According to the present invention, high alloy iron material with austenitic structure and spheroidal graphite configuration contains following ingredients (weight %) inter alia: carbon＜2%, silicon 2.0～6.0%, nickel 29～36%, chromium 1.0～2.5%, niobium 0.1～1.0% and molybdenum 0.1～2.5%.Compare with known containing, in this material, add molybdenum and niobium especially with alloy form by the above-mentioned concentration that provides based on the austenitic alloy that contains spheroidal graphite of nickel.Show,, can increase the temperature fluctuation resistibility of this alloy, and can not cause material to become fragile owing to the formation of carbide by adding molybdenum together with niobium.In addition, use, can improve the resistibility and the antiscale ability of the material that is in higher temperature according to alloy of the present invention.In this case, alloy according to the present invention has lower thermal expansivity, thereby has reduced contingent rimose danger under the temperature fluctuation situation.
Carbon concentration in the alloy is limited to 2% value, to prevent the formation of carbide., adopt such method to regulate carbon concentration here, even now, molten mass still have good flowing and casting performance.
Silicone content in the known alloy has reduction effect, and improves hot gas corrosion resistibility here.Yet material according to the invention has favourable low thermal coefficient of expansion.
Chromium improves resistance of oxidation at high temperature.Here, the ratio of chromium is limited to 2.5%.
Embodiment
Of the present invention one particularly advantageous combination has stipulated that cast iron materials has 0.5～1.5% manganese.Manganese content in the alloy influences casting performance on the one hand, also reduce graphite but then and separate out, so in this case manganese content preferable be restricted to 1.5%.
Consistent with another favourable combination of the present invention, because also may causing the fragility of material, this material to have, more a high proportion of phosphorus is lower than 0.1% phosphorus.In addition, the copper that has less than 0.5% is favourable for described material.
Particularly preferred combination of the present invention has stipulated that cast iron materials contains 34～36% nickel.This ratio of nickel has the function that makes up an austenite basic structure.
Another favourable combination prescribed material of the present invention preferably has 1.5～2.5% chromium, to improve high temperature resistibility and resistance of oxidation.
With using spheroidal graphite and nickel is that traditional austenite cast iron alloy (D5) of main carrier is compared, and having higher temperature resistibility is particularly advantageous for cast iron (consistent with the present invention).Therefore, also be fit to very much use in being in the very high wall material as thin as a wafer of temperature according to cast iron of the present invention with 3～6 millimeters of wall thickness.
Therefore material according to the invention is suitable for use in the member that is in high thermal stress very much.According to present understanding, can resist about 985 degrees centigrade by the thin-wall member that cast iron materials according to the present invention is made.According to the present invention, therefore this high alloy iron material is used to assemble the parts of engine exhaust system.This material is particularly suitable for exhaust manifold and turbocharger housing.This material can be used for the parts that special adaptations can produce the exhaust system of the high compression that reaches 1100 ℃ of exhaust temperatures and engine with supercharger in it.
This material is particularly suitable for being used in (in other words, with the incorporate housing of the turbine housing of exhaust manifold and exhaust turbine supercharger) in the whole housing.
According to the present invention, the member (the especially member of engine exhaust system) that is in high thermal stress is made up of the cast iron materials with above-mentioned characteristic.Therefore, be used for the material that the alternative tradition of cast iron of the present invention is used for exhaust system.Basically, cast iron can be according to general method manufacturing and processing.Member can once make the anneal of even structure, and this has obtained better distribution of carbides conversely again.
Compare with the traditional austenite cast iron alloy that is used for vehicle exhaust system, it can realize 35 degrees centigrade heat resist ability Increase. The exhaust that realizes thus or the increase of ignition temperature also allow to increase the relevant horsepower of displacement and reduce pollutant emission, Thereby fuel saving.
In addition, in the shearing crack test, compare with the conventional alloys that belongs to D5 class (ASTM 439), according to the present invention Cast iron materials have and exceed 8% temperature fluctuation resistance. In the highway performance test, can see according to the present invention Material have improvement up to 30%.
The present invention is particularly suitable for the member of vehicle exhaust system, but is not limited to them. Modification within the scope of the present invention Also fall into the claim of this patent with combination.
Claims (14)
1. have austenitic structure and spheroidal graphite configuration, possess higher temperature fluctuation resistibility and be used for the high alloy iron material of the favourable purposes of engine, it is characterized in that described material represents to comprise following ingredients with weight percentage:
Carbon＜2.0%
Silicon 2.0～6.0%
Nickel 29～36%
Chromium 1.0～2.5%
Niobium 0.1～1.0%
Molybdenum 0.1～2.5%
2. according at the described cast iron materials of preceding claim, it is characterized in that described material comprises 0.5～1.5% manganese.
3. cast iron materials according to claim 1 is characterized in that described material comprises the phosphorus less than 0.1%.
4. cast iron materials according to claim 1 is characterized in that described material comprises the copper less than 0.5%.
5. cast iron materials according to claim 1 is characterized in that described material preferably comprises 34～36% nickel.
6. cast iron materials according to claim 1 is characterized in that described material preferably comprises 1.5～2.5% chromium.
7. according to the purposes that is used for the member that is in high thermal stress of engine at the described high alloy iron material of one of preceding claim.
8. purposes according to claim 7 is characterized in that, the part exhaust system that the described member that is in high thermal stress is an engine.
9. purposes according to claim 7 is characterized in that, the described member that is in high thermal stress is exhaust manifold and/or turbocharger housing.
10. purposes according to claim 7 is characterized in that, the described member that is in high thermal stress is whole housing.
11. be in the member of high thermal stress, it is characterized in that described member is used according to the described cast iron materials of one of claim 1～7 and made.
12. the member that is in high thermal stress according to claim 11 is characterized in that described member is an exhaust manifold.
13. the member that is in high thermal stress according to claim 11 is characterized in that, described member is the turbine housing of exhaust turbine supercharger.
14. the member that is in high thermal stress according to claim 11 is characterized in that, described member is whole housing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005006778A DE102005006778B4 (en) | 2005-02-12 | 2005-02-12 | High-alloyed cast iron material and use of the material for thermally highly stressed components |
| DE102005006778.6 | 2005-02-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101120112A CN101120112A (en) | 2008-02-06 |
| CN100532610C true CN100532610C (en) | 2009-08-26 |
Family
ID=36283724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006800047923A Expired - Fee Related CN100532610C (en) | 2005-02-12 | 2006-02-07 | High alloy iron, use of the material for structural components that are subject to high thermal stress and corresponding structural component |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20080267808A1 (en) |
| EP (1) | EP1846583B1 (en) |
| CN (1) | CN100532610C (en) |
| AT (1) | ATE419406T1 (en) |
| CA (1) | CA2599091C (en) |
| DE (2) | DE102005006778B4 (en) |
| WO (1) | WO2006084838A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2262917B1 (en) * | 2008-02-25 | 2017-04-05 | Wescast Industries, Inc. | Ni-25 heat-resistant nodular graphite cast iron for use in exhaust systems |
| KR20110057213A (en) * | 2008-09-25 | 2011-05-31 | 보르그워너 인코퍼레이티드 | Turbocharger and blade bearing ring therefor |
| US8372335B2 (en) * | 2010-01-14 | 2013-02-12 | Honeywell International Inc. | Austenitic ductile cast iron |
| CN102560269A (en) * | 2010-12-09 | 2012-07-11 | 佳木斯畅通汽车零部件有限公司 | Exhaust manifold of engine with cast heat-resistant steel |
| JP2015502473A (en) * | 2011-10-20 | 2015-01-22 | ボーグワーナー インコーポレーテッド | Turbocharger and components therefor |
| CN104846265B (en) * | 2015-04-27 | 2017-10-17 | 沈阳铸锻工业有限公司 | A kind of ultralow temperature austenite abrasion-proof magnesium iron material and preparation method thereof |
| CN105537579A (en) * | 2015-12-24 | 2016-05-04 | 宁波天阁汽车零部件有限公司 | Turbocharger high-temperature-resistant turbine shell body and preparation method thereof |
| CN105604616A (en) * | 2015-12-24 | 2016-05-25 | 宁波天阁汽车零部件有限公司 | High temperature resisting turbocharger shell |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1410732A (en) * | 1973-05-04 | 1975-10-22 | Int Nickel Ltd | Low expansion alloys |
| JPS5985842A (en) * | 1982-11-10 | 1984-05-17 | Nissan Motor Co Ltd | Heat-resistant spheroidal graphite cast iron |
| EP0675210A1 (en) * | 1992-12-15 | 1995-10-04 | Kabushiki Kaisha Toshiba | Method of manufacturing cast iron of high strength and low expansion |
| DE10011154A1 (en) * | 2000-03-07 | 2001-09-13 | Mahle Gmbh | Cylinder head has rotary valve made of austenitic cast iron, and bore housing rotary valve is at least partially coated in region of running surface for rotary valve |
| FR2836155B1 (en) * | 2002-02-15 | 2005-01-07 | Imphy Ugine Precision | SOFT MAGNETIC ALLOY FOR WATCHMAKING |
-
2005
- 2005-02-12 DE DE102005006778A patent/DE102005006778B4/en not_active Expired - Fee Related
-
2006
- 2006-02-07 CN CNB2006800047923A patent/CN100532610C/en not_active Expired - Fee Related
- 2006-02-07 CA CA2599091A patent/CA2599091C/en not_active Expired - Fee Related
- 2006-02-07 US US11/815,227 patent/US20080267808A1/en not_active Abandoned
- 2006-02-07 WO PCT/EP2006/050714 patent/WO2006084838A1/en active Application Filing
- 2006-02-07 EP EP06708061A patent/EP1846583B1/en not_active Not-in-force
- 2006-02-07 AT AT06708061T patent/ATE419406T1/en active
- 2006-02-07 DE DE502006002489T patent/DE502006002489D1/en active Active
Non-Patent Citations (2)
| Title |
|---|
| Cast Iron for Service at Temperatures Exceeding 800 deg C.. Rickard. J.British Foundryman,Vol.77 No.6. 1984 |
| Cast Iron for Service at Temperatures Exceeding 800 deg C.. Rickard. J.British Foundryman,Vol.77 No.6. 1984 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102005006778B4 (en) | 2013-10-02 |
| US20080267808A1 (en) | 2008-10-30 |
| EP1846583B1 (en) | 2008-12-31 |
| WO2006084838A1 (en) | 2006-08-17 |
| CA2599091C (en) | 2014-05-06 |
| ATE419406T1 (en) | 2009-01-15 |
| DE102005006778A1 (en) | 2006-08-17 |
| EP1846583A1 (en) | 2007-10-24 |
| DE502006002489D1 (en) | 2009-02-12 |
| CN101120112A (en) | 2008-02-06 |
| CA2599091A1 (en) | 2006-08-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20180207 |