CN1322231C - Shock-absorption motor-cycle engine and its making method - Google Patents
Shock-absorption motor-cycle engine and its making method Download PDFInfo
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- CN1322231C CN1322231C CNB031020488A CN03102048A CN1322231C CN 1322231 C CN1322231 C CN 1322231C CN B031020488 A CNB031020488 A CN B031020488A CN 03102048 A CN03102048 A CN 03102048A CN 1322231 C CN1322231 C CN 1322231C
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Abstract
The present invention discloses a shock-absorption motorcycle engine and a making method thereof, which is characterized in that one or more than one elements of the engine are formed via compression casting, and are made from magnesium alloy which has a structure with a chemical modification layer and a protective layer; magnesium is the main ingredient of the magnesium alloy and accounts for above 80% of the total contents. The product of the present invention has light vibration strength, and the average vibration strength of the present invention is only one third of that of a traditional engine. Simultaneously, the comfort and the safety of drive are enhanced, and the service life of the engine is extended. The oil leakage situation of the engine is reduced, and the noise pollution is reduced.
Description
One. technical field
The invention relates to a kind of manufacture method of motorcycle engine, more particularly about a kind of manufacture method that adopts the shock-absorbing type motorcycle engine of magnesium alloy.
Two, background technique
Motorcycle engine is the heart of motorcycle, yet tradition adopts the motor of aluminium alloy part to have the outstanding shortcoming that vibration is violent, noise is big, citizen extremely hate the phenomenon of this " the motor noise disturbs residents ", and " taboo is rubbed " launched respectively in each big city at present, " limit is rubbed " order is exactly a clear proof.Simultaneously, the vibration of motor is to cause engine life to shorten, take place easily the main cause of leakage of oil.Reduce the vibration and the noise of motorcycle, can be from improving the motor accuracy of manufacturing, solve the fixed problem of the roughness of engine, connecting rod and bent axle adopt flywheel and balancer weight to offset vibration, two cylinders are vertical to be put V-type engine and resets to the flat opposed twin cylinder engine and repeal by implication to reduce vibration with the motional inertia of two pistons utilizing motor, adopt multicylinder engine arranged side by side, and utilize electronic technology to make technology such as the two-in-one motor of starting-generating and start with.Above-mentioned measure can both be at vibration that reduces motor in varying degrees and noise, yet utilizes magnesium alloy to make the vibration that produces when the motorcycle engine component but can lower engine running significantly.
In " application of magnesium alloy on automobile, motorcycle " literary composition of delivering on 2002 the 8/9th phases " Automobile Technology and Material ", related to parts such as magnesium alloy manufacturing motor left and right sides crankcase body, case lid, tail-hood, front and back wheel hub, back brake cover, back bars, and introduced and to have carried out magnesium alloy materials processing with magnesium alloy die casting production technology, magnesium alloy differential arc oxidation process for treating surface, yet the document and unexposed concrete processing technology.
But magnesium alloy materials will be applied to motorcycle engine and must solve the anticorrosive of magnesium alloy and hardness problem, so there is the difficulty on the manufacturing process, there are difference in itself and traditional magnesium alloy component manufacturing process.
Three, summary of the invention
The manufacture method that the purpose of this invention is to provide a kind of shock-absorbing type motorcycle engine is utilized the magnesium alloy manufacturing, and ocsillator strenght is very little, can increase substantially the travelling comfort of driving, reduces the pollution of NOISE ON ENVIRONMENT simultaneously, and improves its corrosion resistance and hardness.
Purpose of the present invention will further embody and set forth by following detailed description.
The manufacture method of shock-absorbing type motorcycle engine of the present invention comprises that magnesium alloy ingot fusing, die casting, foundry goods are leveled, X-ray check, machining, differential arc oxidation processing, external coating, complete machine assembling, and the process conditions that described differential arc oxidation is handled are:
A, manufacturing mechanism: common plastics electrolytic bath;
B, operating voltage: 260V threephase AC;
C, electric current output waveform: pulse rectangular wave;
D, modes of emplacement: left crankcase is as anode, and the corrosion resistant plate in the electrolytic bath is as negative electrode;
E, operating temperature: 25-35 ℃;
F, solution formula: sodium silicate 10-15 grams per liter, caustic potoash 8-10 grams per liter, potassium fluoride 8-11 grams per liter;
G, current density: 2A/dm
2
H, processing time: 7-9 minute;
I, product oxidated layer thickness are about the 8-10 micron, hardness: HRC 70.
Its described magnesium alloy is to be main component with magnesium metal, and the magnesium component accounts for more than 80% of total content.
The magnesium alloy component list is seen the cast magnesium alloy component list.
The protective layer of external coating is general protective material coating, as coating or paint, or baking vanish.
Wherein, press casting procedure comprises the magnesium alloy with liquid state, under the condition that is higher than 50～120 ℃ of magnesium alloy melting temperatures, and fills at a high speed the die cavity of transfer mold under the high pressure effect of 20～60MPa, and crystallization and freezing and obtain foundry goods under high pressure.
Be preferably,, under the condition that is higher than 70～100 ℃ of magnesium alloy melting temperatures, and under the high pressure effect of 20～40MPa, fill at a high speed the die cavity of transfer mold the magnesium alloy of liquid state, and crystallization and freezing and obtain foundry goods under high pressure.
What be worth to select is, with the magnesium alloy of liquid state, under the condition that is higher than 80～90 ℃ of magnesium alloy melting temperatures, and fills the die cavity of transfer mold at a high speed under the high pressure effect of 20～30MPa, and crystallization and freezing and obtain foundry goods under high pressure.
In the manufacture method of shock-absorbing type motorcycle engine of the present invention, behind magnesium alloy motorcycle engine component die cast, carry out surface by micro-arc oxidation and handle, make the die castings surface obtain magnesium oxide micro-crystalline ceramic layer or chromizing layer anticorrosive, high hardness.
Magnesium oxide micro-crystalline ceramic layer produces micro-arc discharge in the positive column, the anode surface micro-area temperature is raise and generate magnesia crystal with pottery feature and the non-crystal crystallite mixing layer that one deck and matrix combine with little metallurgical form, this ceramic layer has not only improved wear-resisting, the corrosion resisting property of Mg alloy surface greatly, and abilities such as its scrape resistence, impact and thermal fatigue also are far from chromaking and anodising is comparable.Differential arc oxidation develops from the common anode oxidation, it has broken through the restriction in traditional oxidation current, voltage faraday zone, anode potential is brought up to several hectovolts by tens volts, oxidation current also develops into big electric current from little electric current, cause phenomenons such as corona, aura, micro-arc discharge even sparkover on sample surfaces, occur, thereby generate the magnesia ceramics tunic on the exemplar surface.Methods such as high temperature synthesizes are electroplated, spray, drawn out certainly to this technology and chromaking relatively, shortcomings such as ceramic layer compactness difference and combination force are not strong have been overcome, do not introduce ceramic material from the outside, directly burning is sintered into oxide ceramic layer, make the existing high wear resistance of ceramic layer and the decay resistance of its preparation, kept the combination force of pottery again with matrix.
The magnesium alloy motorcycle motor has lot of advantages: wherein outstanding advantage is that its ocsillator strenght is very little, the Longxin board HY125-7 motorcycle engine that the claimant will be equipped with magnesium alloy right crankcase cover, left front lid, right large lid is delivered to the Mechanical ﹠ Electrical Transmission and the control test room of University Of Chongqing, utilize motorcycle engine test stand and vibration and mode measuring system that the result that different vibration sources detect is shown, its average ocsillator strenght only reaches 1/3rd of traditional HY125-7 motorcycle engine.The vibration that reduces motorcycle engine can not only improve the travelling comfort of driving, and the Security that car load travels reduces the generation of engine oil leakage situation the working life of improving motor, and what is more important reduces noise pollution.
Below further specify and set forth the present invention by accompanying drawing and explanation thereof.
Four, description of drawings
Fig. 1 is the partial sectional view of magnesium alloy engine parts of the present invention.
In Fig. 1, symbol 1 is represented the magnesium alloy component matrix, and symbol 2 is represented magnesium oxide micro-crystalline ceramic layer or chromizing layer, and symbol 3 is represented protective layer.
Capping oxidation magnesium micro-crystalline ceramic layer or chromizing layer on the magnesium alloy component matrix, matcoveredn on magnesium oxide micro-crystalline ceramic layer or chromizing layer.
Five, embodiment
Below further specify the present invention by specific embodiment, but embodiment only be used for the explanation, can not limit the scope of the invention.
In the present invention, all raw materials and additive all can be buied from market, and equipment spraying also is known.
In the present invention, refer in particular to as non-, all amounts, part are unit of weight.
Embodiment 1
The trade mark of the raw material magnesium alloy that adopts is AZ91 D (concrete composition sees Table 1).The left crankcase of motorcycle engine adopts the magnesium alloy manufacturing, and its making step comprises the magnesium alloy ingot fusing, die casting, and foundry goods is leveled, X-ray check, machining, surface treatment, external coating, complete machine assembling, check, packing, steps such as warehouse-in.Specifically be magnesium alloy, under the condition that is higher than 90 ℃ of magnesium alloy melting temperatures, and under the high pressure effect of 30MPa, fill at a high speed the die cavity of transfer mold, under high pressure crystallization and freezing and obtain foundry goods liquid state.Behind magnesium alloy motorcycle engine component die cast, also need carry out surface by micro-arc oxidation and handle, make the die castings surface obtain magnesium oxide micro-crystalline ceramic layer anticorrosive, high hardness, then the magnesium alloy left crankcase is assembled on the motorcycle engine.
The process conditions that differential arc oxidation is handled are:
A, manufacturing mechanism: common plastics electrolytic bath;
B, operating voltage: 260V threephase AC;
C, electric current output waveform: pulse rectangular wave;
D, modes of emplacement: left crankcase is as anode, and the corrosion resistant plate in the electrolytic bath is as negative electrode;
E, operating temperature: 25-35 ℃;
F, solution formula: sodium silicate 13 grams per liters, caustic potoash 9 grams per liters, potassium fluoride 10 grams per liters;
G, current density: 2A/dm
2
H, processing time: 8 minutes;
I, product oxidated layer thickness are about 10 microns, hardness: HRC 70.
Embodiment 2
The trade mark of the raw material magnesium alloy that is adopted is AM60B (concrete composition sees Table 1).The right crankcase of motorcycle engine adopts the magnesium alloy manufacturing, and its making step comprises the magnesium alloy ingot fusing, die casting, and foundry goods is leveled, X-ray check, machining, surface treatment, external coating, complete machine assembling, check, packing, steps such as warehouse-in.Specifically be magnesium alloy, under the condition that is higher than 95 ℃ of magnesium alloy melting temperatures, and under the high pressure effect of 35MPa, fill at a high speed the die cavity of transfer mold, under high pressure crystallization and freezing and obtain foundry goods liquid state.Behind magnesium alloy motorcycle engine component die cast, also need carry out surface by micro-arc oxidation and handle, make the die castings surface obtain magnesium oxide micro-crystalline ceramic layer anticorrosive, high hardness, then the magnesium alloy left crankcase is assembled on the motorcycle engine.
Embodiment 3
The trade mark of the raw material magnesium alloy that is adopted is AM50A (concrete composition sees Table 1).The left back lid of motorcycle engine adopts the magnesium alloy manufacturing, and its making step comprises the magnesium alloy ingot fusing, die casting, and foundry goods is leveled, X-ray check, machining, surface treatment, external coating, complete machine assembling, check, packing, steps such as warehouse-in.Specifically be magnesium alloy, under the condition that is higher than 90 ℃ of magnesium alloy melting temperatures, and under the high pressure effect of 40MPa, fill at a high speed the die cavity of transfer mold, under high pressure crystallization and freezing and obtain foundry goods liquid state.And behind magnesium alloy motorcycle engine component die cast, also need carry out surface by micro-arc oxidation and handle, make the die castings surface obtain magnesium oxide micro-crystalline ceramic layer anticorrosive, high hardness, then the right back lid of magnesium alloy is assembled on the motorcycle engine.
Embodiment 4
The trade mark of the raw material magnesium alloy that is adopted is AZ91S (concrete composition sees Table 1).The left front lid of motorcycle engine adopts the magnesium alloy manufacturing, and its making step is with embodiment 1.
Embodiment 5
The trade mark of the raw material magnesium alloy that is adopted is AS41B (concrete composition sees Table 1).The right crankcase cover of motorcycle engine adopts the magnesium alloy manufacturing, and its making step comprises the magnesium alloy ingot fusing, die casting, and foundry goods is leveled, X-ray check, machining, surface treatment, external coating, complete machine assembling, check, packing, steps such as warehouse-in.Specifically be magnesium alloy, under the condition that is higher than 95 ℃ of magnesium alloy melting temperatures, and under the high pressure effect of 30MPa, fill at a high speed the die cavity of transfer mold, under high pressure crystallization and freezing and obtain foundry goods liquid state.And behind magnesium alloy motorcycle engine component die cast, also need carry out surface modification treatment, and make the die castings surface obtain magnesium oxide micro-crystalline ceramic layer anticorrosive, high hardness, then the right back lid of magnesium alloy is assembled on the motorcycle engine.
Embodiment 6
The trade mark of the raw material magnesium alloy that adopts is AM 100A (concrete composition sees Table 1).The cylinder head of motorcycle engine adopts the magnesium alloy manufacturing, and its making step comprises the magnesium alloy ingot fusing, die casting, and foundry goods is leveled, X-ray check, machining, surface treatment, external coating, complete machine assembling, check, packing, steps such as warehouse-in.Specifically be magnesium alloy, under the condition that is higher than 95 ℃ of magnesium alloy melting temperatures, and under the high pressure effect of 30MPa, fill at a high speed the die cavity of transfer mold, under high pressure crystallization and freezing and obtain foundry goods liquid state.And behind magnesium alloy motorcycle engine component die cast, also need carry out surface modification treatment, and make the die castings surface obtain magnesium oxide micro-crystalline ceramic layer anticorrosive, high hardness, then the magnesium alloy right large lid is assembled on the motorcycle engine.
The cast magnesium alloy component list
D. following adjustment composition can improve alloy resistance to corrosion: Mn≤0.03%, Fe≤0.01%, Cu≤0.02%.Zn+Si≤0.2%.E. other elements refer to list the symbol of element in this table gauge outfit, but in this table the element of specified limits numerical value content not.If F. Mn content does not reach least limit in the table, or Fe content exceeds the limit of the maximum of stipulating in the table, and then the Fe/Mn value should meet in the table and stipulates.</entry></row></tbody></tgroup></table></tables>
Claims (4)
1, a kind of manufacture method of shock-absorbing type motorcycle engine, comprise that magnesium alloy ingot fusing, die casting, foundry goods are leveled, X-ray check, machining, differential arc oxidation processing, external coating, complete machine assembling, it is characterized in that the process conditions that described differential arc oxidation is handled are:
A, manufacturing mechanism: common plastics electrolytic bath;
B, operating voltage: 260V threephase AC;
C, electric current output waveform: pulse rectangular wave;
D, modes of emplacement: left crankcase is as anode, and the corrosion resistant plate in the electrolytic bath is as negative electrode;
E, operating temperature: 25-35 ℃;
F, solution formula: sodium silicate 10-15 grams per liter, caustic potoash 8-10 grams per liter, potassium fluoride 8-11 grams per liter;
G, current density: 2A/dm
2
H, processing time: 7-9 minute;
I, product oxidated layer thickness are the 8-10 micron, hardness: HRC70.
2, the manufacture method of shock-absorbing type motorcycle engine as claimed in claim 1, it is characterized in that: described press casting procedure is the magnesium alloy with liquid state, under the condition that is higher than 50～120 ℃ of magnesium alloy melting temperatures, and under the high pressure effect of 20～60MPa, fill at a high speed the die cavity of transfer mold, and crystallization and freezing and obtain foundry goods under high pressure.
3, the manufacture method of shock-absorbing type motorcycle engine as claimed in claim 1, it is characterized in that described press casting procedure is the magnesium alloy with liquid state, under the condition that is higher than 70～100 ℃ of magnesium alloy melting temperatures, and under the high pressure effect of 20～40MPa, fill at a high speed the die cavity of transfer mold, and crystallization and freezing and obtain foundry goods under high pressure.
4, the manufacture method of shock-absorbing type motorcycle engine as claimed in claim 1, it is characterized in that magnesium alloy with liquid state, under the condition that is higher than 80～90 ℃ of magnesium alloy melting temperatures, and under the high pressure effect of 20～30MPa, fill at a high speed the die cavity of transfer mold, and crystallization and freezing and obtain foundry goods under high pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031020488A CN1322231C (en) | 2003-01-29 | 2003-01-29 | Shock-absorption motor-cycle engine and its making method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031020488A CN1322231C (en) | 2003-01-29 | 2003-01-29 | Shock-absorption motor-cycle engine and its making method |
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| Publication Number | Publication Date |
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| CN1438409A CN1438409A (en) | 2003-08-27 |
| CN1322231C true CN1322231C (en) | 2007-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031020488A Expired - Fee Related CN1322231C (en) | 2003-01-29 | 2003-01-29 | Shock-absorption motor-cycle engine and its making method |
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| CN113278856B (en) * | 2021-05-24 | 2021-12-07 | 重庆理工大学 | AM50A die-cast magnesium alloy with excellent corrosion-resistant oxide film and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6056834A (en) * | 1996-11-25 | 2000-05-02 | Mitsui Mining & Smelting Company, Ltd. | Magnesium alloy and method for production thereof |
| JP2000263442A (en) * | 1999-03-19 | 2000-09-26 | Makoo Kk | Treatment method of magnesium product and treatment device of magnesium product |
| JP2000343201A (en) * | 1999-06-03 | 2000-12-12 | Mitsui Mining & Smelting Co Ltd | Die casting method of magnesium alloy and die casting product |
| DE10025643A1 (en) * | 2000-05-24 | 2001-12-06 | Ozf Oberflaechenbeschichtungsz | Process for coating aluminum and magnesium die casting bodies comprises electrolytically degreasing the body in an alkaline aqueous cleaner, descaling, forming a conversion layer, cataphoretically dip coating, rinsing in water, and curing |
| CN1341767A (en) * | 2001-08-14 | 2002-03-27 | 上海交通大学 | Multicomponent heat-resistant magnesium alloy for car and its founding process |
| CN1369577A (en) * | 2001-02-13 | 2002-09-18 | 西安理工大学 | Surface processing technology for Mg-alloy |
-
2003
- 2003-01-29 CN CNB031020488A patent/CN1322231C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6056834A (en) * | 1996-11-25 | 2000-05-02 | Mitsui Mining & Smelting Company, Ltd. | Magnesium alloy and method for production thereof |
| JP2000263442A (en) * | 1999-03-19 | 2000-09-26 | Makoo Kk | Treatment method of magnesium product and treatment device of magnesium product |
| JP2000343201A (en) * | 1999-06-03 | 2000-12-12 | Mitsui Mining & Smelting Co Ltd | Die casting method of magnesium alloy and die casting product |
| DE10025643A1 (en) * | 2000-05-24 | 2001-12-06 | Ozf Oberflaechenbeschichtungsz | Process for coating aluminum and magnesium die casting bodies comprises electrolytically degreasing the body in an alkaline aqueous cleaner, descaling, forming a conversion layer, cataphoretically dip coating, rinsing in water, and curing |
| CN1369577A (en) * | 2001-02-13 | 2002-09-18 | 西安理工大学 | Surface processing technology for Mg-alloy |
| CN1341767A (en) * | 2001-08-14 | 2002-03-27 | 上海交通大学 | Multicomponent heat-resistant magnesium alloy for car and its founding process |
Non-Patent Citations (4)
| Title |
|---|
| 镁合金微弧氧化陶瓷层生长过程及微观结构的研究 蒋百灵、吴国建、张淑芬、雷廷权，材料热处理学报，第23卷第1期 2002 * |
| 镁合金的开发与运用 翟春泉、曾小勤、丁文江、王渠东、吕宜振、徐小平，机械工程持材料，第25卷第1期 2001 * |
| 镁合金的开发与运用 翟春泉、曾小勤、丁文江、王渠东、吕宜振、徐小平，机械工程持材料，第25卷第1期 2001;镁合金配件在汽车、摩托车上的应用 向冬霞、曹建勇、王军，汽车工艺与材料，第8/9期 2002;镁合金微弧氧化陶瓷层生长过程及微观结构的研究 蒋百灵、吴国建、张淑芬、雷廷权，材料热处理学报，第23卷第1期 2002 * |
| 镁合金配件在汽车、摩托车上的应用 向冬霞、曹建勇、王军，汽车工艺与材料，第8/9期 2002 * |
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