CN201763458U - Piston for head hard anodized combustion motor - Google Patents
Piston for head hard anodized combustion motor Download PDFInfo
- Publication number
- CN201763458U CN201763458U CN2010205205715U CN201020520571U CN201763458U CN 201763458 U CN201763458 U CN 201763458U CN 2010205205715 U CN2010205205715 U CN 2010205205715U CN 201020520571 U CN201020520571 U CN 201020520571U CN 201763458 U CN201763458 U CN 201763458U
- Authority
- CN
- China
- Prior art keywords
- piston
- oxidizing
- washing
- film layer
- oxidizing solution
- 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
Links
Images
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides a piston for a head hard anodized combustion motor. The material of the base body is Al-Si alloy; the piston is characterized in that an anodized film layer of 8-60 mum is arranged on an outer surface of the piston head; the anodized film layer generating technique adopts direct current power for anodization, namely, removing oil chemically, washing by hot water, washing by cold water, bright dipping, washing by the cold water, oxidizing and washing by the cold water. The conditions for the anodization are: voltage for 45-70V, the oxidizing current density for 3-7A/dm<2>, the temperature of the oxidizing solution at -5 to 0 DEG C, oxidizing time for 30-60min and the concentration for the oxidizing solution being 200-240g/L for sulfuric acid, 15-20g/L for oxalic acid and 0.2-0.5g/L for aluminum sulfate. The piston has the advantages that: the technique is easily controlled; the parameters are automatically controlled; the utility model can improve the abrasion resistance, corrosion resistance, high temperature and impact resistance of the piston; after the piston is installed, the service life is improved; and the contents for exhaust emission CO and HC are reduced.
Description
Technical field
The utility model relates to a kind of internal combustion engine, is specially a kind of internal combustion engine of head hard anodizing.
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 purpose of this utility model be overcome internal combustion engine reply temperature height, thermal shock is big, speed is high, friction occurs in frequent deficiency, and the internal combustion engine of a kind of head (second ring bank and more than) hard anodizing is provided, the combination property of piston is improved.
The purpose of this utility model is achieved in that a kind of head hard anodizing internal combustion engine, and its basic material is the Al-Si alloy, it is characterized in that the piston crown outer surface has the anode oxidation membrane of 8-60 μ m.
Anode oxidation membrane generates the anodic oxidation of process using DC electrical source, and concrete technological process 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 cylindric protecting jacket of class that described frock is internal diameter and piston ring groove external diameter, the piston skirt external diameter is suitable.
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.
Hard 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 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 oxidation liquid composition and component, setting voltage is to 45-70V, and current density is at 3-7A/dm
2, start oxidizing solution cooling and stirring system.Piston is put into oxidizing solution, and 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 beneficial effects of the utility model are, piston crown (second ring bank and more than) oxidation film layer is suitable, wear resistance and high temperature resistant impact are better, in the manufacture method, piston crown hard anodizing technology major advantage is that technology is grasped easily and the realization parameter is controlled automatically, be easy to organize industrialized production, occupation area of equipment is little, Processing capacity is strong, the manufacturing efficiency height, do not reduce material capability and do not changing the former physical dimension of alloy workpiece, under the condition of surface roughness, can increase substantially the wear-resisting of piston, corrosion-resistant, the high temperature resistance impact property satisfies the needs under the bad working environments condition.After the piston installation that said method is made, 1. obviously improve working life; 2. exhaust emissions CO, HC content obviously descend.
Description of drawings
Fig. 1 is that enlarged diagram cuts open in the office of the utility model piston.
Fig. 2 is the utility model piston anodic oxidation device schematic representation.
Fig. 3 is the utility model tool structure schematic representation.
Among the figure, a. piston crown, b. piston skirt, 1.Anode oxidation membrane, 2. piston matrix, 3. electrolytic bath, 4. cooling tube, 5. oxidizing solution, 6. frock.
Specific embodiment
A kind of head hard anodizing internal combustion engine, its basic material is the Al-Si alloy, piston crown a outer surface has the anode oxidation membrane 1 of 8-60 μ m.
Anode oxidation membrane 1 generates the anodic oxidation of process using DC electrical source, and concrete technological process is: electrochemical deoiling-Hot Wash-Cold Wash-bright dipping-Cold Wash-oxidation-Cold Wash; The anode oxidation process condition comprises voltage, electric current, oxidizing solution temperature, oxidization time and oxidizing solution composition proportion.
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.
Anodic oxidation device mainly contains power supply and voltage control system, electrolytic bath 3, stirring system, cooling system four parts are formed.Put into oxidizing solution 5 after zone beyond the piston crown a is closed with special tooling, the energising back starts oxidizing solution cooling and stirring system, generate the patina of very thin one deck high insulating property immediately at piston face, 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 5 that forms is uniform.
Claims (1)
1. head hard anodizing internal combustion engine, its basic material is the Al-Si alloy, it is characterized in that the piston crown outer surface has the anode oxidation membrane of 8-60 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205205715U CN201763458U (en) | 2010-09-05 | 2010-09-05 | Piston for head hard anodized combustion motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205205715U CN201763458U (en) | 2010-09-05 | 2010-09-05 | Piston for head hard anodized combustion motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201763458U true CN201763458U (en) | 2011-03-16 |
Family
ID=43716064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205205715U Expired - Fee Related CN201763458U (en) | 2010-09-05 | 2010-09-05 | Piston for head hard anodized combustion motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201763458U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943079A (en) * | 2010-09-05 | 2011-01-12 | 曲阜金皇活塞股份有限公司 | Hard-head anodized internal combustion engine piston and manufacturing method thereof |
| CN102312265A (en) * | 2011-09-22 | 2012-01-11 | 珠海市赛日包装材料有限公司 | Preparation method for anode oxidation film of aluminum or aluminum alloy |
| CN102618903A (en) * | 2012-03-23 | 2012-08-01 | 重庆建设工业(集团)有限责任公司 | Anode special for oxidation of deep hole aluminum piece hard anode and oxidation method of deep hole aluminum piece hard anode |
| CN105420781A (en) * | 2015-11-24 | 2016-03-23 | 山西江淮重工有限责任公司 | Cast aluminum hard anodizing technique capable of achieving rapid film formation |
| CN108950639A (en) * | 2018-07-03 | 2018-12-07 | 南京金城三国机械电子有限公司 | A kind of hard anodized treatment process of cold extrusion shaped aluminum alloy part |
-
2010
- 2010-09-05 CN CN2010205205715U patent/CN201763458U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943079A (en) * | 2010-09-05 | 2011-01-12 | 曲阜金皇活塞股份有限公司 | Hard-head anodized internal combustion engine piston and manufacturing method thereof |
| CN102312265A (en) * | 2011-09-22 | 2012-01-11 | 珠海市赛日包装材料有限公司 | Preparation method for anode oxidation film of aluminum or aluminum alloy |
| CN102312265B (en) * | 2011-09-22 | 2014-10-01 | 珠海市赛日包装材料有限公司 | Preparation method for anode oxidation film of aluminum or aluminum alloy |
| CN102618903A (en) * | 2012-03-23 | 2012-08-01 | 重庆建设工业(集团)有限责任公司 | Anode special for oxidation of deep hole aluminum piece hard anode and oxidation method of deep hole aluminum piece hard anode |
| CN102618903B (en) * | 2012-03-23 | 2015-04-15 | 重庆建设工业(集团)有限责任公司 | Anode special for oxidation of deep hole aluminum piece hard anode and oxidation method of deep hole aluminum piece hard anode |
| CN105420781A (en) * | 2015-11-24 | 2016-03-23 | 山西江淮重工有限责任公司 | Cast aluminum hard anodizing technique capable of achieving rapid film formation |
| CN108950639A (en) * | 2018-07-03 | 2018-12-07 | 南京金城三国机械电子有限公司 | A kind of hard anodized treatment process of cold extrusion shaped aluminum alloy part |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101943079A (en) | Hard-head anodized internal combustion engine piston and manufacturing method thereof | |
| CN201763458U (en) | Piston for head hard anodized combustion motor | |
| CN101949338A (en) | Combustion engine piston with composite layer and manufacturing method thereof | |
| CN102953108B (en) | One automatically controls Hard Anodic Oxidation Process | |
| EP1050606B1 (en) | Method for producing hard protection coatings on articles made of aluminium alloys | |
| CN102330095B (en) | Preparation method of Al2O3 coating on surface of steel-matrix material | |
| CN103103597B (en) | A kind of titanium alloy self-lubricating composite membrane and preparation method thereof | |
| CN102154673A (en) | Method for preparing environment-friendly micro-arc oxidation black ceramic film on aluminum alloy surface | |
| CN107937961A (en) | The aluminium alloy surface treatment method and pulse electrodeposition hole sealing device of differential arc oxidation combination pulse electrodeposition sealing of hole | |
| CN103014804A (en) | Aluminum alloy with army-green micro-arc oxidation ceramic membrane on surface and preparation method of aluminum alloy | |
| CN102705100A (en) | Internal combustion engine piston provided with composite layer and manufacturing method thereof | |
| CN101158401A (en) | Ceramic cylinder and producing technology thereof | |
| CN100453789C (en) | Surface-treated piston for internal combustion engine, and its preparing method | |
| CN107541764A (en) | A kind of High-silicon and high-copper die casting aluminium anode oxidation process and High-silicon and high-copper pack alloy | |
| CN109457279A (en) | It adds nickel composite interlayer and prepares low energy consumption, long-life titanium-based PbO2The method of anode | |
| CN103590085B (en) | A kind of surface treatment method of bonding wire production aluminum steel axle | |
| CN107955960A (en) | A kind of preparation method of aluminum alloy surface multiple-protection layer | |
| CN2911211Y (en) | Surface treated I.C.engine piston | |
| CN201763459U (en) | Internal-combustion engine piston having composite layer | |
| CN203007452U (en) | Aluminum alloy with army green micro-arc oxidation ceramic membrane on surface | |
| CN103469283B (en) | Inlay composite deposite piston ring and the working method thereof of abrasion-proof particle | |
| CN101381884B (en) | Aluminum alloy synchronization ring with TiAl/Al2O3 ceramic coating formed by micro-arc oxidation at the surface and its preparation method | |
| CN106702454B (en) | The surface treatment method and wear-resisting shuttle of weaving aluminium alloy shuttle | |
| CN103320838B (en) | The method of the yellow ceramic film of a kind of TC4 titanium alloy surface growth in situ | |
| CN201212063Y (en) | Anode carbon block of energy-saving and environment friendly structure aluminium electrolytic tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110316 Termination date: 20190905 |