CN102234735A - Bainite cylinder liner - Google Patents
Bainite cylinder liner Download PDFInfo
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- CN102234735A CN102234735A CN2010101636514A CN201010163651A CN102234735A CN 102234735 A CN102234735 A CN 102234735A CN 2010101636514 A CN2010101636514 A CN 2010101636514A CN 201010163651 A CN201010163651 A CN 201010163651A CN 102234735 A CN102234735 A CN 102234735A
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- bainite
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- cylinder liner
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- Pistons, Piston Rings, And Cylinders (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a bainite cylinder liner, which is characterized in that: the alloy cast iron matrix structure of the bainite cylinder liner consists of a needle-like and feathered bainite structure and a tempered martensite and comprises the following chemical components in percentage by weight: 2.6 to 3.1 percent of carbon, 2.0 to 3.0 percent of silicon, 0.02 to 0.08 percent of sulfur, 1.5 to 1.8 percent of manganese, 0.1 to 0.45 percent of phosphorus, 0.2 to 0.4 percent of chromium and the balance of ferrum. An as-cast bainite is obtained in an as-cast state on the basis of a manganese element without the addition of precious alloy elements such as molybdenum, nickel and the like. Compared with a cylinder liner in which a pearlite is used as a matrix structure, the bainite cylinder liner has higher comprehensive performance, higher hardness, higher tensile strength and higher abrasive resistance and toughness. Compared with a molybdenum-nickel alloy, a manganese alloy has extremely low cost, so that a low alloy bainite can be popularized on internal combustion engines.
Description
Technical field
The present invention relates to the manganese alloy bainite as cast condition cylinder sleeve that cylinder sleeve technical field, particularly oil engine are used.
Background technology
Cylinder sleeve is one of kernel component of oil engine, and it and cylinder head, piston, piston ring have constituted the combustion chamber, have been the power producers of oil engine.Since cargo truck and motorbus engine towards high-power, low oil consumption, lowly pollute, the lightweight development, cylinder sleeve requires also more and more higher, Material Strength commonly used is low, wear no resistance, and can not meet the demands.Begin one's study both at home and abroad and adopt the as-cast bainite cylinder sleeve.Bainitic cast iron has advantages such as good toughness, intensity height, wear resistance be good, and its intensity is compared common material and doubled with work-ing life, so the as-cast bainite cylinder sleeve is one of cylinder sleeve development trend.Current as-cast bainite mainly is by the high-load Mo-Ni alloy of adding, and therefore molybdenum nickel price comparison height causes the as-cast bainite manufacturing cost all than higher.
For example: Granted publication number discloses a kind of cylinder sleeve made of cast MoNi-alloy bainite iron in the Chinese patent of CN1157490C, the cast alloy iron matrix that is characterized in it is made of faller gill shape lower bainite and tempered martensite, its chemical ingredients percentage ratio is by weight counted: carbon 2.6-3.0%, silicon 1.7-2.3%, manganese maximum are no more than 0.80%, the phosphorus maximum is no more than 0.10%, the sulphur maximum is no more than 0.08%, molybdenum 0.7-1.5%, nickel 1.0-1.5%, and all the other are iron.
Adopt such technology certainly to make cylinder sleeve have higher intensity and hardness, better toughness and wear resistance, thereby prolonged the work-ing life of cylinder sleeve.But molybdenum 0.7-1.5%, nickel 1.0-1.5% in its composition, molybdenum nickel are noble metals causes production cost than higher, and the as-cast bainite cylinder sleeve can only be applied on the engine of high added value, is difficult to popularize.
Summary of the invention
The purpose of this invention is to provide a kind of bainite cylinder sleeve, guaranteeing that cylinder sleeve has on higher hardness, intensity, the good toughness and the basis in work-ing life, significantly reduces the cost of bainite cylinder sleeve.
For solving the problems of the technologies described above, the present invention adopts technical scheme as follows: the bainite cylinder sleeve is characterized in that: its cast alloy iron matrix is made of needle-like and penniform bainite structure and tempered martensite, and its chemical ingredients percentage ratio is by weight counted:
Carbon: 2.6-3.1%;
Silicon: 2.0-3.0%;
Sulphur: 0.02-0.08%;
Manganese: 1.5-1.8%;
Phosphorus: 0.1-0.45%;
Chromium: 0.2-0.4%;
All the other are iron.
The invention has the beneficial effects as follows:, under as cast condition, obtained as-cast bainite because alloy cast iron cylinder jacke relies on manganese element not adding on the valuable alloying element basis such as molybdenum nickel.This tissue is that pearlitic cylinder sleeve is compared with matrix, has more excellent comprehensive performances: have higher hardness, higher tensile strength, better wear resistance and toughness.Its hardness is HB270-330, and tensile strength is greater than 350Mpa.Can make cylinder sleeve bear high temperature high pressure bad working environment such as bigger mechanical stress, thermal stresses, the cylinder sleeve life-span is obviously prolonged.Rely on manganese element, the as-cast bainite that under as cast condition, obtains, because manganese alloy is with respect to Mo-Ni alloy, cost is much lower, becomes possibility thereby low-alloy bainite is popularized on oil engine.
Embodiment
Embodiments of the invention 1, the bainite cylinder sleeve, its cast alloy iron matrix is made of needle-like and penniform bainite structure and tempered martensite, and its chemical ingredients percentage ratio is by weight counted:
Carbon: 2.6%;
Silicon: 2.0%;
Sulphur: 0.02%;
Manganese: 1.5%;
Phosphorus: 0.1%;
Chromium: 0.2%;
All the other are iron.
Be processed into the technological process of cylinder sleeve finished product: with the pig iron, steel scrap, ferromanganese, ferrochrome, carburetant adds according to a certain percentage and carries out melting in the medium-frequency induction furnace, for obtaining bainite, molten iron must be controlled at 1480 ℃-1540 ℃ in the melting, adopt horizontal cantilever centrifugal casting machine to carry out rotary casting, 1300 ℃-1400 ℃ of castingprocesses teeming temperatures, 1540 rev/mins of mould rotating speeds, come the water time, the time of striking waters will realize controlling automatically, blank is 800 ℃ of-1000 ℃ of depannings, put cooling fast in the high molecular polymer hardening liquid then into, put into melt pit at 400 ℃.Cast blank adopts numerical control machining center to be processed into finished product, because this product hardness is HB270-330, so mechanical workout will adopt sintex.
Its metallographic structure is: matrix is made up of needle-like and penniform bainite structure and tempered martensite.This tissue is directly obtained by as cast condition.Carbide is less than 5%, and graphite structure is A type, Type B, D type graphite composition, and E type graphite is less than 30%.
Embodiments of the invention 2, the bainite cylinder sleeve, its cast alloy iron matrix is made of needle-like and penniform bainite structure and tempered martensite, and its chemical ingredients percentage ratio is by weight counted:
Carbon: 3.1%;
Silicon: 3.0%;
Sulphur: 0.08%;
Manganese: 1.8%;
Phosphorus: 0.45%;
Chromium: 0.4%;
All the other are iron.
It is processed into the technological process of cylinder sleeve finished product and metallographic structure with embodiment 1.
Embodiments of the invention 3, the bainite cylinder sleeve, its cast alloy iron matrix is made of needle-like and penniform bainite structure and tempered martensite, and its chemical ingredients percentage ratio is by weight counted:
Carbon: 2.8%;
Silicon: 2.5%;
Sulphur: 0.05%;
Manganese: 1.7%;
Phosphorus: 0.28%;
Chromium: 0.3%;
All the other are iron.
It is processed into the technological process of cylinder sleeve finished product and metallographic structure with embodiment 1.
Claims (1)
1. bainite cylinder sleeve is characterized in that: its cast alloy iron matrix is made of needle-like and penniform bainite structure and tempered martensite, and its chemical ingredients percentage ratio is by weight counted:
Carbon: 2.6-3.1%;
Silicon: 2.0-3.0%;
Sulphur: 0.02-0.08%;
Manganese: 1.5-1.8%;
Phosphorus: 0.1-0.45%;
Chromium: 0.2-0.4%;
All the other are iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101636514A CN102234735A (en) | 2010-04-27 | 2010-04-27 | Bainite cylinder liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101636514A CN102234735A (en) | 2010-04-27 | 2010-04-27 | Bainite cylinder liner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102234735A true CN102234735A (en) | 2011-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101636514A Pending CN102234735A (en) | 2010-04-27 | 2010-04-27 | Bainite cylinder liner |
Country Status (1)
| Country | Link |
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| CN (1) | CN102234735A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911466A (en) * | 2015-07-07 | 2015-09-16 | 中原内配集团股份有限公司 | Ultra-high-strength multiphase-structure gray cast iron cylinder jacket and preparation method thereof |
| CN105803303A (en) * | 2016-03-29 | 2016-07-27 | 中原内配集团股份有限公司 | Cylinder liner of air conditioning compressor and preparation method of cylinder liner |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1376806A (en) * | 2002-01-17 | 2002-10-30 | 石家庄金刚内燃机零部件集团有限公司 | Cylinder sleeve made of cast MoNi-alloy bainite iron |
| CN101121990A (en) * | 2007-09-20 | 2008-02-13 | 河南省中原内配股份有限公司 | Quasi-as-cast bainite gray cast iron cylinder jacket and preparation method thereof |
| EP2166119A1 (en) * | 2007-06-26 | 2010-03-24 | Incorporated National University Iwate University | Flaky graphite cast iron, and method for production thereof |
-
2010
- 2010-04-27 CN CN2010101636514A patent/CN102234735A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1376806A (en) * | 2002-01-17 | 2002-10-30 | 石家庄金刚内燃机零部件集团有限公司 | Cylinder sleeve made of cast MoNi-alloy bainite iron |
| EP2166119A1 (en) * | 2007-06-26 | 2010-03-24 | Incorporated National University Iwate University | Flaky graphite cast iron, and method for production thereof |
| CN101121990A (en) * | 2007-09-20 | 2008-02-13 | 河南省中原内配股份有限公司 | Quasi-as-cast bainite gray cast iron cylinder jacket and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911466A (en) * | 2015-07-07 | 2015-09-16 | 中原内配集团股份有限公司 | Ultra-high-strength multiphase-structure gray cast iron cylinder jacket and preparation method thereof |
| CN105803303A (en) * | 2016-03-29 | 2016-07-27 | 中原内配集团股份有限公司 | Cylinder liner of air conditioning compressor and preparation method of cylinder liner |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111109 |