CN102676912A - Low-carbon and low-silicon cylinder sleeve and preparation method thereof - Google Patents

Low-carbon and low-silicon cylinder sleeve and preparation method thereof Download PDF

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Publication number
CN102676912A
CN102676912A CN2012101720138A CN201210172013A CN102676912A CN 102676912 A CN102676912 A CN 102676912A CN 2012101720138 A CN2012101720138 A CN 2012101720138A CN 201210172013 A CN201210172013 A CN 201210172013A CN 102676912 A CN102676912 A CN 102676912A
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China
Prior art keywords
cylinder sleeve
low
silicon
carbon
nucleating agent
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CN2012101720138A
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Chinese (zh)
Inventor
杨国敏
黄洪岭
刘书胜
杨厥荣
权文辉
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GKN ZHONGYUAN CYLINDER LINER Co
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GKN ZHONGYUAN CYLINDER LINER Co
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Priority to CN2012101720138A priority Critical patent/CN102676912A/en
Publication of CN102676912A publication Critical patent/CN102676912A/en
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Abstract

The invention relates to a low-carbon and low-silicon cylinder sleeve which comprises the chemical components by weight percent: 2.5-2.7% of C, 1.3-1.7% of Si, 0.5-0.9% of Mn, more than 0% and less than or equal to 0.1% of S, more than 0% and less than or equal to 0.1% of P, more than 0% and less than or equal to 0.1% of Ni, more than 0% and less than or equal to 0.2% of Cr, more than 0% and less than or equal to 0.1% of Mo, 0.4-1.0% of Cu and the balance of Fe. On the premise of low cost, higher mechanical performance requirements (including hardness and tensile strength) of the cylinder sleeve can be met, and the cylinder sleeve is high in cost performance, so that the low-carbon and low-silicon cylinder sleeve has high potential market.

Description

A kind of low carbon low silicon cylinder sleeve and preparation method thereof
Technical field
The invention belongs to the cylinder sleeve technical field, be specifically related to a kind of low carbon low silicon cylinder sleeve and preparation method thereof.
Background technology
At present, on the market there be the alloy cast iron cylinder jacke of several kinds of common low carbon low silicons: material cylinder sleeve such as middle phosphorus alloy cast iron, boron cast iron, high phosphorus cast alloy iron, phosphorus molybdenum alloy cast iron.Support cylinder sleeve in being all, their material cost is all higher, mainly strengthens the intensity of pearlite matrix through other alloy.Higher like Cr content in the high-phosphorous iron, the phosphorus molybdenum alloy cast iron need add the intensity that the noble metal molybdenum increases cylinder sleeve.
Though above-mentioned material cylinder sleeve can satisfy the requirement of engine strength aspect, during all can't avoiding, these materials support the vibrations of cylinder sleeve and mover contact position.The fatigue strength of these cylinder sleeves is not high yet in addition, generally about 150Mpa.The vibrations reason is that the Young's modulus (in close relations with Chemical Composition) of cylinder sleeve is lower, generally between 120-150Gpa.Young's modulus is low, and the rigidity of cylinder sleeve is just little, in engine working process, just is prone to produce distortion, thereby just is prone to produce vibrations at the mating surface place.
Summary of the invention
The object of the invention is to provide a kind of low carbon low silicon cylinder sleeve and preparation method thereof, and this cylinder sleeve has better tensile strength, consistency and elasticity modulus.
For realizing above-mentioned purpose, the technical scheme that the present invention takes is following:
A kind of low carbon low silicon cylinder sleeve, its materials chemistry are formed meter as following weight percent:
Carbon (C) 2.5~2.7%, silicon (Si) 1.3~1.7%, manganese (Mn) 0.5~0.9%, 0<sulphur (S)≤0.1%, 0<phosphorus (P)≤0.1%, 0<nickel (Ni)≤0.1%, 0<chromium (Cr)≤0.2%, 0<molybdenum (Mo)≤0.1%, copper (Cu) 0.4~1.0%, surplus is Fe.
The preparation method of said low carbon low silicon cylinder sleeve, it comprises the steps:
1. prepare burden in proportion, with line frequency furnace melting batching, control iron liquid tapping temperature is 1530~1550 ℃;
2. the nucleating agent that adds iron liquid weight 0.2~0.5% before coming out of the stove is handled, and said nucleating agent is silicon barium calcium nucleating agent or silicon strontium nucleating agent;
3. adopt metal mold coating centrifugal casting technique (this technology is common process, so do not give unnecessary details) the production cylinder sleeve cast part (die temperature is advisable to be controlled at 400~600 ℃) that wets;
4. foundry goods depanning after wind is chilled to 550~650 ℃, puts into the foundry goods frame then and gets final product.
Cylinder sleeve according to the invention has reduced carbon, the silicone content in " carbon, silicon, manganese, sulphur, phosphorus " five big common elements; Add copper alloying in addition; The main effect of these three kinds of elements is following: the 1) effect of copper: copper belongs to graphite element; Can reduce austenite critical transition temperature and reinforced ferrite matrix, but and refine pearlite and graphite flake.Promptly play the solution strengthening effect at the thin-walled place, perlite hardness is increased at pearlite region copper; At the heavv section place, it mainly acts on is to suppress ferritic transformation, thereby improves sensitivity profile.2) effect of carbon and silicon: silicon and carbon all are the strong graphited elements that promotes.Graphite derives from carbon.Along with the raising of carbon content, carbon concentration in the molten iron and undissolved graphite particulate increase, and help the graphite forming core, thereby have promoted greying.The bonding force of silicon and iron atom is greater than the bonding force between carbon and the iron atom.Silicon is dissolved in the sosoloid of molten iron and iron, owing to weakened the bonding force between iron and the carbon atom, and impel greying.Silicon also reduces the carbon concentration of cast iron eutectic composition, adds silicon in the cast iron and can replace a part of carbon, and silicon promotes graphited effect to be equivalent to 1/3rd of carbon approximately.
Cylinder sleeve performance index according to the invention are following: 1) Young's modulus: E >=160Gpa.High Young's modulus can guarantee high rigidity, and the distortion that cylinder sleeve produces at work reduces, thereby supports moving, shaking of cylinder sleeve and engine cylinder contact level in can reducing, and avoids the wearing and tearing of cylinder sleeve to cylinder body.2) hardness 250~300HBW; Tensile strength >=330Mpa; Fatigue strength 165Mpa.This cylinder sleeve also has higher fatigue strength outside guaranteeing high hardness and tensile strength.
With respect to prior art, the present invention has the following advantages:
The cost of material is low for cylinder sleeve of the present invention; Only in cylinder sleeve five big conventional elements, add a certain amount of Cu, under satisfied prerequisite cheaply, can satisfy the cylinder sleeve higher mechanical properties again and require (comprising hardness, tensile strength); Cost performance is high, has enormous and latent market.
Description of drawings
Fig. 1 is that cylinder sleeve according to the invention is amplified 500 times matrix metallograph.
Embodiment
Below through preferred embodiment the present invention is done further explain, but protection scope of the present invention is not limited thereto.
Embodiment 1
Element C Si Mn S P Ni Cr Mo Cu Iron
Weight percent (%) 2.55 1.45 0.50 0.065 0.052 0.05 0.06 0.05 0.65 Surplus
Prepare burden according to the above ratio, with line frequency furnace melting batching, iron liquid tapping temperature is controlled at 1545 ℃.Before iron liquid is come out of the stove, adding the silicon strontium nucleating agent that accounts for iron liquid weight 0.2% handles.Adopt metal mold (wet shot coating) rotary casting common process production cylinder sleeve cast part, the control die temperature is 550 ℃.Put after the foundry goods depanning on air-cooled, air-cooledly put into the foundry goods frame to 600 ℃ and get final product.The tensile strength of this cylinder sleeve is 340Mpa, and hardness is 258HB, Young's modulus 166Gpa.
Embodiment 2
Element C Si Mn S P Ni Cr Mo Cu Iron
Weight percent (%) 2.70 1.50 0.55 0.07 0.06 0.05 0.06 0.03 0.60 Surplus
Prepare burden according to the above ratio, with line frequency furnace melting batching, iron liquid tapping temperature is controlled at 1540 ℃.Before iron liquid is come out of the stove, adding the silicon titanate innoculant that accounts for iron liquid weight 0.3% handles.Adopt metal mold (wet shot coating) rotary casting common process production cylinder sleeve cast part, the control die temperature is 450 ℃.Put after the foundry goods depanning on air-cooled, air-cooledly put into the foundry goods frame to 550 ℃ and get final product.The tensile strength of this cylinder sleeve is 330Mpa, and hardness is 255HB, Young's modulus 164Gpa.
Embodiment 3
Element C Si Mn S P Ni Cr Mo Cu Iron
Weight percent (%) 2.65 1.60 0.70 0.08 0.08 0.03 0.10 0.03 0.70 Surplus
Prepare burden according to the above ratio, with line frequency furnace melting batching, iron liquid tapping temperature is controlled at 1530 ℃.Before iron liquid is come out of the stove, adding the silicon titanate innoculant that accounts for iron liquid weight 0.4% handles.Adopt metal mold (wet shot coating) rotary casting common process production cylinder sleeve cast part, the control die temperature is 530 ℃.Put after the foundry goods depanning on air-cooled, air-cooledly put into the foundry goods frame to 600 ℃ and get final product.The tensile strength of this cylinder sleeve is 350Mpa, and hardness is 265HB, Young's modulus 170Gpa.

Claims (2)

1. a low carbon low silicon cylinder sleeve is characterized in that, its materials chemistry is formed meter as following weight percent:
Carbon 2.5~2.7%, silicon 1.3~1.7%, manganese 0.5~0.9%, 0<sulphur≤0.1%, 0<phosphorus≤0.1%, 0<nickel≤0.1%, 0<chromium≤0.2%, 0<molybdenum≤0.1%, copper 0.4~1.0%, surplus are Fe.
2. the preparation method of the said low carbon low silicon cylinder sleeve of claim 1 is characterized in that, comprises the steps:
1. prepare burden in proportion, with line frequency furnace melting batching, control iron liquid tapping temperature is 1530~1550 ℃;
2. the nucleating agent that adds iron liquid weight 0.2~0.5% before coming out of the stove is handled, and said nucleating agent is silicon barium calcium nucleating agent or silicon strontium nucleating agent;
3. adopt the metal mold coating centrifugal casting technique production cylinder sleeve cast part that wets;
4. foundry goods depanning after wind is chilled to 550~650 ℃, puts into the foundry goods frame then and gets final product.
CN2012101720138A 2012-05-30 2012-05-30 Low-carbon and low-silicon cylinder sleeve and preparation method thereof Pending CN102676912A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103667869A (en) * 2013-12-14 2014-03-26 河南省中原内配股份有限公司 Surface alloyed cylinder jacket and production method thereof
CN104195423A (en) * 2014-09-24 2014-12-10 山东宏马工程机械有限公司 High-carbon low-silicon niobium-containing cast iron brake disc and preparation method thereof
CN105734400A (en) * 2016-04-20 2016-07-06 河南中原吉凯恩气缸套有限公司 Gray cast iron quenching cylinder liner with ultralow number of graphite pits and production method of gray cast iron quenching cylinder liner
CN107686937A (en) * 2017-09-06 2018-02-13 中原内配集团股份有限公司 A kind of high-performance cylinder jacket and its production technology and surface treatment method

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JPH1096041A (en) * 1996-09-20 1998-04-14 Toyota Motor Corp Spheroidal graphite cast iron with high rigidity and high fatigue strength, and its production
JP2006206986A (en) * 2005-01-31 2006-08-10 Nippon Piston Ring Co Ltd Cast iron having excellent corrosion resistance and wear resistance
CN101592097A (en) * 2008-05-29 2009-12-02 韦星野 The processing method of anti-sandstorm cylinder sleeve
CN101705421A (en) * 2008-08-12 2010-05-12 韦星野 As-cast bainite manufacturing process
CN102015158A (en) * 2009-01-09 2011-04-13 曼恩载重汽车股份公司 Cast iron alloy for cylinder heads
CN102181780A (en) * 2011-01-31 2011-09-14 潍柴动力股份有限公司 Gray pig iron and production process thereof
CN102268591A (en) * 2011-07-07 2011-12-07 无锡小天鹅精密铸造有限公司 Melting ingredient for piston
KR20120009172A (en) * 2010-07-22 2012-02-01 현대자동차주식회사 Flake Graphite Cast Iron with High Tensile Strength, Machinability and cylinder block for vehicle engine
CN102418029A (en) * 2010-09-27 2012-04-18 贾维珍 Material and casting process of high-strength air cylinder sleeve
CN102454782A (en) * 2010-10-22 2012-05-16 朱国萍 High-strength piston ring material
CN102465230A (en) * 2010-11-17 2012-05-23 常州朗锐活塞有限公司 Piston material for alloy cast iron

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU973656A1 (en) * 1981-05-28 1982-11-15 Могилевское Отделение Физико-Технического Института Ан Бсср Grey cast iron
SU1601178A1 (en) * 1988-12-13 1990-10-23 Ярославский политехнический институт Cast iron for cylinder sleeves
CN1084901A (en) * 1992-09-29 1994-04-06 济南铁路局配件厂华商铸造厂 Beeliner niobium casting iron cylinder jacket and piston ring
CN1165870A (en) * 1996-05-21 1997-11-26 四川联合大学 Rare-earth vanadium titanium synthetic cast iron for engine cylinder and its prodn. method
JPH1096041A (en) * 1996-09-20 1998-04-14 Toyota Motor Corp Spheroidal graphite cast iron with high rigidity and high fatigue strength, and its production
JP2006206986A (en) * 2005-01-31 2006-08-10 Nippon Piston Ring Co Ltd Cast iron having excellent corrosion resistance and wear resistance
CN101592097A (en) * 2008-05-29 2009-12-02 韦星野 The processing method of anti-sandstorm cylinder sleeve
CN101705421A (en) * 2008-08-12 2010-05-12 韦星野 As-cast bainite manufacturing process
CN102015158A (en) * 2009-01-09 2011-04-13 曼恩载重汽车股份公司 Cast iron alloy for cylinder heads
KR20120009172A (en) * 2010-07-22 2012-02-01 현대자동차주식회사 Flake Graphite Cast Iron with High Tensile Strength, Machinability and cylinder block for vehicle engine
CN102418029A (en) * 2010-09-27 2012-04-18 贾维珍 Material and casting process of high-strength air cylinder sleeve
CN102454782A (en) * 2010-10-22 2012-05-16 朱国萍 High-strength piston ring material
CN102465230A (en) * 2010-11-17 2012-05-23 常州朗锐活塞有限公司 Piston material for alloy cast iron
CN102181780A (en) * 2011-01-31 2011-09-14 潍柴动力股份有限公司 Gray pig iron and production process thereof
CN102268591A (en) * 2011-07-07 2011-12-07 无锡小天鹅精密铸造有限公司 Melting ingredient for piston

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103667869A (en) * 2013-12-14 2014-03-26 河南省中原内配股份有限公司 Surface alloyed cylinder jacket and production method thereof
CN103667869B (en) * 2013-12-14 2015-07-29 中原内配集团股份有限公司 A kind of surface alloying cylinder sleeve and production method thereof
CN104195423A (en) * 2014-09-24 2014-12-10 山东宏马工程机械有限公司 High-carbon low-silicon niobium-containing cast iron brake disc and preparation method thereof
CN105734400A (en) * 2016-04-20 2016-07-06 河南中原吉凯恩气缸套有限公司 Gray cast iron quenching cylinder liner with ultralow number of graphite pits and production method of gray cast iron quenching cylinder liner
CN105734400B (en) * 2016-04-20 2017-11-21 河南中原吉凯恩气缸套有限公司 A kind of ultralow graphite hole quantity gray cast iron quenching cylinder jacket and its production method
CN107686937A (en) * 2017-09-06 2018-02-13 中原内配集团股份有限公司 A kind of high-performance cylinder jacket and its production technology and surface treatment method
CN107686937B (en) * 2017-09-06 2019-06-14 中原内配集团股份有限公司 A kind of high-performance cylinder jacket and its production technology and surface treatment method

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Application publication date: 20120919