CN101949338A - Combustion engine piston with composite layer and manufacturing method thereof - Google Patents
Combustion engine piston with composite layer and manufacturing method thereof Download PDFInfo
- Publication number
- CN101949338A CN101949338A CN 201010274885 CN201010274885A CN101949338A CN 101949338 A CN101949338 A CN 101949338A CN 201010274885 CN201010274885 CN 201010274885 CN 201010274885 A CN201010274885 A CN 201010274885A CN 101949338 A CN101949338 A CN 101949338A
- Authority
- CN
- China
- Prior art keywords
- piston
- combustion engine
- internal combustion
- composite bed
- oxidation
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a combustion engine piston with a composite layer. The substrate of the combustion engine piston is made of Al-Si alloy, the outside surface of the head part of the piston has an Al2O3 oxide film layer, and the outside surface of the skirt part of the piston has a tin plating. The manufacturing method is to anodize the heat part of the piston and plate tin on the skirt part of the piston. The anodizing process flow is as follows: chemical oil removal, washing with hot water, washing with cold water, polishing, washing with cold water, local piston protection by a tool, oxidization and washing with cold water. The skirt part tin plating process comprises: performing the before-plating treatment of the piston with the oxidized head part; protecting the piston head, an annular groove and the like, which are not to be plated with tin; placing the piston in chemical plating solution at a certain temperature and keeping for 2 to 3 minutes; and washing with cold water, passivating, washing with cold water, sealing with hot water, and placing in an oven for dying. The combustion engine piston has the advantages of wear resistance, corrosion resistance, high high-temperature impact resistance and improved lubricating performance as well as high mechanical efficiency, low CO and HC content of tail gases and improved durability after being assembled on an engine.
Description
Technical field
The present invention relates to a kind of internal combustion engine, be specially a kind of internal combustion engine and manufacture method thereof with composite bed.
Background technique
Piston is the core component of motor, along with motor to low oil consumption, low noise, low emission evolution of objective, more and more higher to the quality requirement of piston.Internal combustion engine requires the operating temperature height, thermal shock is big, speed is high, friction is frequent, and pot type piston is difficult to satisfy under the operating mode harsh conditions works, and restricts the raising of motor combination property for a long time.Scientific and technical personnel have implemented various behaves both at home and abroad for this reason: as: " the whole anodization of piston ", " differential arc oxidation processing ", " head thermal spraying ceramic layer " etc., but consider factors such as complex process degree, cost control, service condition, above method each has different application area limitations.
Summary of the invention
The deficiency that the objective of the invention is to overcome internal combustion engine reply temperature height, thermal shock is big, speed is high, friction occurs in frequent, piston crown hard anodizing, the zinc-plated technology of skirt section cylindrical are applied to same piston, a kind of internal combustion engine with composite bed is provided, the combination property of piston is improved.
The object of the present invention is achieved like this: a kind of internal combustion engine with composite bed, its basic material is the Al-Si alloy, it is characterized in that the piston crown outer surface has Al
2O
3Oxidation film layer, outer skirt surface have a tin coating.
Described oxidation film layer is an anode oxidation membrane, and thickness is 8-60 μ m; Tin coating thickness is 1.5-3um.
A kind of manufacture method of the internal combustion engine with composite bed is characterized in that piston crown adopts anodizing, and the piston skirt is zinc-plated.
The concrete technological process of described anodic oxidation is: electrochemical deoiling-Hot Wash-Cold Wash-bright dipping-Cold Wash-frock localised protection piston-oxidation-Cold Wash; The anode oxidation process condition comprises voltage, electric current, oxidizing solution temperature, oxidization time and oxidizing solution composition proportion.
Described anodised process conditions are: voltage 45-70V, oxidation current density 3-7A/dm
2, oxidizing solution temperature-5-0 ℃, oxidization time 30-60 minute, used oxidizing solution concentration was sulfuric acid: 200-240g/L, oxalic acid: 15-20g/L, aluminum sulphate: 0.2-0.5g/L
The bucket shape guard member that described frock is internal diameter and piston ring groove external diameter, the piston crown external diameter is suitable.
The zinc-plated technology in described piston skirt is chemical plating: the piston of head oxidation processes is plated pretreatment; to not need zinc-plated piston crown, annular groove etc. to protect then; put into 60 ℃ of chemical plating fluids under-80 ℃ of temperature; keep 2-3min; then, put into baking box at last and dry through Cold Wash later, passivation, Cold Wash, hot water sealing.
Described plating pretreatment comprises that kerosene washes-electrochemical deoiling-Hot Wash-Cold Wash-bright dipping-Cold Wash.
Described chemical plating fluid is K
2Sn (OH)
6Or Na
2Sn (OH)
6Solution.
Aluminum alloy under the effect of impressed current, forms the process of patina on anode under special operating conditions, be called anodic oxidation.All-aluminium piston generates Al on its surface after oxidation reaction
2O
3Oxidation film layer, this film hardness is very high, and vickers microhardness can reach 250HV-500HV, so claim hard anodizing.This oxidation film layer fusing point is up to 2050 ℃, and thermal conductivity is less than 0.16W/m
2K can make the piston crown firing chamber bear TRANSIENT HIGH TEMPERATURE, and can play a role in insulation.Facts have proved, carry out anodic oxidation with DC electrical source and can obtain the quality oxide rete.
Anodic oxidation device mainly contains power supply and voltage control system, electrolytic bath, stirring system, cooling system four parts are formed.Power supply and voltage control system provide hard anodizing required high-tension electricity, and electrolytic bath is made by stereotype usually, the double negative electrode of doing, interior Sheng oxidizing solution; Stirring system can improve electrolytical uniformity in the solution; Cooling system can guarantee the operating temperature that electrolytic solution is required.
Be more specifically: be specially the zone beyond the piston crown is closed with special tooling, calculate the piston crown surface area, in thermostatic chamber, measure piston crown thickness and skirt section molded lines size, the cleaning piston surface, preferred every process parameter, dispose suitable oxidizing solution composition and component, setting voltage is to 45-70V, and current density is at 3-7A/d m
2Start oxidizing solution cooling and stirring system, control oxidizing solution temperature changes in-5-0 ℃ scope, piston is put into oxidizing solution, after the energising, the surface generates the patina of very thin one deck high insulating property immediately, and along with the generation of patina, oxidizing solution has also just begun the solution of patina.Because patina is inhomogeneous, the place that patina is thin is at first dissolved, has formed hole.Oxidizing solution arrives piston face by hole, and electrochemical reaction is proceeded.Because the dissolving always position a little less than the patina relative thin takes place, after oxide insulating film is dissolved, generate new patina at this position, dissolved click is transferred to the weak zone of other relative thin, the generation of patina is accompanied by the dissolving of patina, when the formation speed of film greater than solution velocity, the oxidation film layer progressive additive, the final oxidation film layer that forms is uniform.This oxidation film layer is by Al
2O
3Form, can obtain higher wear resistance, corrosion resistance, resistance to sudden heating, improve the life-span and the efficient of motor.
Notice that the composition of oxidation current density, oxidizing solution, the control of voltage, the control of oxidization time are the keys that improves piston crown oxidation film layer thickness and quality.The current density of the growing process by optimizing oxidation film layer and the process parameter of oxidization time finally obtain corrosion-resistant, wear-resisting, the high temperature resistant impact oxidation film layer of optimal economic thickness 8-60 μ m.
The zinc-plated technology in piston skirt is: the piston that processes is plated pretreatment, and promptly kerosene is washed-electrochemical deoiling-Hot Wash-Cold Wash-bright dipping-Cold Wash, will not need zinc-plated piston crown, annular groove etc. to protect then, puts into 60 ℃ of K under-80 ℃ of temperature
2Sn (OH)
6Or Na
2Sn (OH)
6In the solution, keep 2-3min, then, put into baking box at last and dry through Cold Wash, passivation, Cold Wash, hot water sealing.
The tin quality is soft and have good lipophile, so can improve the running-in ability and the lubricity of piston and cylinder sleeve effectively.Tin layer on the surface, piston skirt with chemical method plating 1.5-3um, the tin layer of porous has the good lubrication characteristic of soft metal, can adsorb more oiling agent, has reduced the frictional force of piston and cylinder sound, prevent that piston from stagnating extremely, friction pair is stuck, improve the saturated performance of piston and cylinder.
The invention has the beneficial effects as follows: the piston crown oxidation film layer, high temperature resistant impact is better, and skirt section tin layer is even, and wear resistance, lubricity obviously improve, and the overall performance of piston is improved, and more can adapt to the motor rugged environment.In the manufacture method, piston crown hard anodizing technology and skirt section tin plating technique major advantage are: technology is grasped easily and is realized that parameter controls automatically, be easy to organize industrialized production, occupation area of equipment is little, Processing capacity is strong, and the manufacturing efficiency height is not reducing material capability and do not changing under the condition of the former physical dimension of alloy workpiece, surface roughness, can increase substantially wear-resisting, corrosion-resistant, the high temperature resistance impact property of piston, satisfy the needs under the various bad working environments conditions.After the piston installation that said method is made, 1. mechanical efficiency improves more than 2%.2. exhaust emissions CO, HC content obviously descend.3. durability improves, and the overhaul mileage prolongs 50-100%.
Description of drawings
Fig. 1 cuts open enlarged diagram for piston of the present invention office;
Fig. 2 is a piston crown anodic oxidation schematic representation of the present invention;
Fig. 3 is the zinc-plated schematic representation in piston skirt of the present invention.
Among the figure, a. piston crown, b. piston skirt, 1. oxidation film layer, 2. piston matrix, 3. electrolytic bath, 4. cooling tube, 5. oxidizing solution, 6. electroless plating tank, 7. piston, 8. chemical plating fluid, 9. tin coating.
Embodiment
A kind of internal combustion engine with composite bed, its basic material is the Al-Si alloy, it is 8-60 μ m Al that piston crown a outer surface has thickness
2O
3It is 1.5-3um tin coating 9 that oxidation film layer 1, piston skirt b outer surface have a thickness.
A kind of manufacture method of the internal combustion engine with composite bed, piston crown a adopts anodizing, and piston skirt b adopts chemical plating stannum.
The concrete technological process of described anodic oxidation is: electrochemical deoiling-Hot Wash-Cold Wash-bright dipping-Cold Wash-frock localised protection piston-oxidation-Cold Wash; Anodised process conditions are: voltage 45-70V, oxidation current density 3-7A/dm
2, the temperature-5-0 of oxidizing solution 5 ℃, oxidization time 30-60 minute, the concentration of used oxidizing solution 5 was sulfuric acid: 200-240g/L, oxalic acid: 15-20g/L, aluminum sulphate: 0.2-0.5g/L
The zinc-plated technology of described piston skirt b is chemical plating: the piston of head oxidation processes is plated pretreatment; be that kerosene is washed-electrochemical deoiling-Hot Wash-Cold Wash-bright dipping-Cold Wash, will do not need zinc-plated piston crown a, annular groove etc. to protect then, put into 60 ℃ of K under-80 ℃ of temperature
2Sn (OH)
6Or Na
2Sn (OH)
6In the solution, keep 2-3min, then, put into baking box at last and dry through Cold Wash, passivation, Cold Wash, hot water sealing.
Be more specifically: earlier the zone beyond the piston crown a is closed with special tooling, calculate piston crown a surface area, in thermostatic chamber, measure piston crown a thickness and piston skirt molded line size, the cleaning piston surface, preferred every process parameter, dispose suitable oxidizing solution composition and component, setting voltage is to 45-70V, and current density is at 3-7A/d m
2Start oxidizing solution 5 cooling and stirring systems, control oxidizing solution 5 temperature change in-5-0 ℃ scope, piston is put into oxidizing solution 5, after the energising, the surface generates the patina of very thin one deck high insulating property immediately, and along with the generation of patina, the solution of 5 pairs of patinas of oxidizing solution has also just begun.Because patina is inhomogeneous, the place that patina is thin is at first dissolved, has formed hole, and oxidizing solution 5 arrives piston face by hole, and electrochemical reaction is proceeded.Because the dissolving always position a little less than the patina relative thin takes place; after oxide insulating film is dissolved; generate new patina at this position; dissolved click is transferred to the weak zone of other relative thin; the generation of patina is accompanied by the dissolving of patina; when the formation speed of film greater than solution velocity; oxidation film layer 1 progressive additive; the final oxidation film layer 1 that forms is uniform; at last, piston skirt b is zinc-plated: the piston of head oxidation processes is plated pretreatment, and promptly kerosene is washed-electrochemical deoiling-Hot Wash-Cold Wash-bright dipping-Cold Wash; to not need zinc-plated piston crown a then; annular grooves etc. protect, and put into 60 ℃ of K under-80 ℃ of temperature
2Sn (OH)
6Or Na
2Sn (OH)
6In the solution, keep 2-3min,, put into baking box at last and dry and get final product then through Cold Wash, passivation, Cold Wash, hot water sealing.
Claims (9)
1. internal combustion engine with composite bed, its basic material is the Al-Si alloy, it is characterized in that the piston crown outer surface has Al
2O
3Oxidation film layer, outer skirt surface have a tin coating.
2. a kind of internal combustion engine with composite bed as claimed in claim 1 is characterized in that described oxidation film layer is an anode oxidation membrane, and thickness is 8-60 μ m; Tin coating thickness is 1.5-3um.
3. the manufacture method with the internal combustion engine of composite bed is characterized in that piston crown adopts anodizing, and the piston skirt is zinc-plated.
4. the manufacture method of a kind of internal combustion engine with composite bed as claimed in claim 3 is characterized in that the concrete technological process of described anodic oxidation is: electrochemical deoiling-Hot Wash-Cold Wash-bright dipping-Cold Wash-frock localised protection piston-oxidation-Cold Wash; The anode oxidation process condition comprises voltage, electric current, oxidizing solution temperature, oxidization time and oxidizing solution composition proportion.
5. the manufacture method of a kind of internal combustion engine with composite bed as claimed in claim 4 is characterized in that described anodised process conditions are: voltage 45-70V, oxidation current density 3-7A/dm
2, oxidizing solution temperature-5-0 ℃, oxidization time 30-60 minute, used oxidizing solution concentration was sulfuric acid: 200-240g/L, oxalic acid: 15-20g/L, aluminum sulphate: 0.2-0.5g/L.
6. the manufacture method of a kind of internal combustion engine with composite bed as claimed in claim 4 is characterized in that the bucket shape guard member that described frock is internal diameter and piston ring groove external diameter, the piston crown external diameter is suitable.
7. the manufacture method of a kind of internal combustion engine with composite bed as claimed in claim 3; it is characterized in that the zinc-plated technology in described piston skirt is chemical plating: the piston of head oxidation processes is plated pretreatment; to not need zinc-plated piston crown, annular groove etc. to protect then; put into 60 ℃ of chemical plating fluids under-80 ℃ of temperature; keep 2-3min; then, put into baking box at last and dry through Cold Wash, passivation, Cold Wash, hot water sealing.
8. the manufacture method of a kind of internal combustion engine with composite bed as claimed in claim 6 is characterized in that described plating pretreatment comprises that kerosene washes-electrochemical deoiling-Hot Wash-Cold Wash-bright dipping-Cold Wash.
9. the manufacture method of a kind of internal combustion engine with composite bed as claimed in claim 7 is characterized in that described chemical plating fluid is K
2Sn (OH)
6Or Na
2Sn (OH)
6Solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010274885 CN101949338A (en) | 2010-09-05 | 2010-09-05 | Combustion engine piston with composite layer and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010274885 CN101949338A (en) | 2010-09-05 | 2010-09-05 | Combustion engine piston with composite layer and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101949338A true CN101949338A (en) | 2011-01-19 |
Family
ID=43452942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010274885 Pending CN101949338A (en) | 2010-09-05 | 2010-09-05 | Combustion engine piston with composite layer and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101949338A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062013A (en) * | 2011-01-31 | 2011-05-18 | 重庆长安汽车股份有限公司 | Piston of supercharging gasoline engine |
| CN103890363A (en) * | 2011-10-21 | 2014-06-25 | 马勒国际有限公司 | Piston |
| CN104343576A (en) * | 2013-08-01 | 2015-02-11 | 日立汽车***株式会社 | A piston of an internal combustion engine, a manufacturing method thereof, an aluminum alloy part and a manufacturing method of the aluminum alloy part |
| CN105909418A (en) * | 2016-06-15 | 2016-08-31 | 曲阜金皇活塞股份有限公司 | Composite surface treatment piston and preparation method thereof |
| CN104653836B (en) * | 2013-11-21 | 2018-10-26 | 株式会社捷太格特 | Valve body unit and the method for manufacturing the valve body unit |
| CN109026426A (en) * | 2018-08-15 | 2018-12-18 | 全椒县全动机械有限公司 | A kind of internal combustion engine and its surface treatment method |
| CN109267116A (en) * | 2018-11-27 | 2019-01-25 | 滨州渤海活塞有限公司 | A kind of head coating strengthens piston and head coating production |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1283744A (en) * | 1999-08-06 | 2001-02-14 | 株式会社丰田自动织机制作所 | Fixed discharge single rotary oblique disk refrigeriting compressor |
| CN201103487Y (en) * | 2007-11-20 | 2008-08-20 | 曲阜金皇活塞股份有限公司 | Piston for IC engine |
-
2010
- 2010-09-05 CN CN 201010274885 patent/CN101949338A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1283744A (en) * | 1999-08-06 | 2001-02-14 | 株式会社丰田自动织机制作所 | Fixed discharge single rotary oblique disk refrigeriting compressor |
| CN201103487Y (en) * | 2007-11-20 | 2008-08-20 | 曲阜金皇活塞股份有限公司 | Piston for IC engine |
Non-Patent Citations (3)
| Title |
|---|
| 《2007年上海市电子电镀学术年会论文集》 20071231 赵杰，李宁 化学镀锡预镀工艺对镀层质量的影响 94-98页 7-9 , 2 * |
| 《电镀与环保》 20060131 赵杰，李宁 化学镀锡在印刷线路板制备中的应用 第1-5页 2 第26卷, 第1期 2 * |
| 《电镀与精饰》 19890531 吕安敏 化学镀锡工艺与实践 28-29页 9 第11卷, 第3期 2 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062013A (en) * | 2011-01-31 | 2011-05-18 | 重庆长安汽车股份有限公司 | Piston of supercharging gasoline engine |
| CN103890363A (en) * | 2011-10-21 | 2014-06-25 | 马勒国际有限公司 | Piston |
| CN104343576A (en) * | 2013-08-01 | 2015-02-11 | 日立汽车***株式会社 | A piston of an internal combustion engine, a manufacturing method thereof, an aluminum alloy part and a manufacturing method of the aluminum alloy part |
| CN104343576B (en) * | 2013-08-01 | 2017-04-12 | 日立汽车***株式会社 | A piston of an internal combustion engine, a manufacturing method thereof, an aluminum alloy part and a manufacturing method of the aluminum alloy part |
| CN104653836B (en) * | 2013-11-21 | 2018-10-26 | 株式会社捷太格特 | Valve body unit and the method for manufacturing the valve body unit |
| CN105909418A (en) * | 2016-06-15 | 2016-08-31 | 曲阜金皇活塞股份有限公司 | Composite surface treatment piston and preparation method thereof |
| CN109026426A (en) * | 2018-08-15 | 2018-12-18 | 全椒县全动机械有限公司 | A kind of internal combustion engine and its surface treatment method |
| CN109267116A (en) * | 2018-11-27 | 2019-01-25 | 滨州渤海活塞有限公司 | A kind of head coating strengthens piston and head coating production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101949338A (en) | Combustion engine piston with composite layer and manufacturing method thereof | |
| CN103089479B (en) | With abrasion-proof piston ring and the preparation method of hard soft composite coating and textured surfaces | |
| CN101943079A (en) | Hard-head anodized internal combustion engine piston and manufacturing method thereof | |
| CN103103597B (en) | A kind of titanium alloy self-lubricating composite membrane and preparation method thereof | |
| CN102705100A (en) | Internal combustion engine piston provided with composite layer and manufacturing method thereof | |
| CN201763458U (en) | Piston for head hard anodized combustion motor | |
| CN104947107A (en) | Titanium and titanium alloy surface antioxidant wear-resistant composite coating and manufacturing method thereof | |
| CN102021629A (en) | Method for preparing titanium-alloy surface micro-arc oxidation antifriction compound film layer | |
| CN102304739B (en) | Micro-arc oxidation preparation method of high wear resistant and corrosion resistant self-lubricating ceramic layer and electrolyte thereof | |
| CN107937961A (en) | The aluminium alloy surface treatment method and pulse electrodeposition hole sealing device of differential arc oxidation combination pulse electrodeposition sealing of hole | |
| CN106762631A (en) | A kind of scroll compressor thermomechanical components and its manufacture method and scroll compressor | |
| CN103481025A (en) | Modifying method for copper roller face of crystallizer | |
| CN108977865A (en) | A kind of preparation method of 5XXX aluminium and the high anti-corrosion single fine and close differential arc oxidation film layer of aluminum alloy surface | |
| CN100453789C (en) | Surface-treated piston for internal combustion engine, and its preparing method | |
| CN104562105A (en) | Electroplating liquid adopting nickel-cobalt tungsten sulfide nanocrystalline alloy electroplating for piston rings instead of hard chrome plating, and production process of electroplating liquid | |
| CN109440166B (en) | Micro-arc oxidation composite treatment method for improving wear resistance and corrosion resistance of magnesium-lithium alloy surface | |
| CN103484849A (en) | Method of processing surfaces of aluminium alloy pistons and precision friction pairs | |
| CN201103487Y (en) | Piston for IC engine | |
| CN201763459U (en) | Internal-combustion engine piston having composite layer | |
| CN107937903A (en) | A kind of preparation method of corrosive protection of aluminium alloy layer | |
| CN108266425B (en) | Double-metal-structure piston rod and processing method thereof | |
| US20070102300A1 (en) | Method for ceramic electroplating a cylinder assembly of an internal combustion engine | |
| CN2911211Y (en) | Surface treated I.C.engine piston | |
| CN1554807A (en) | Electrolytic solution for aluminium alloy cast piece micro arc oxidation treatment | |
| Karakurkchi et al. | Determining features of application of functional electrochemical coatings in technologies of surface treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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: 20110119 |