CN1796098A - Method for forming anodic oxide skin membrane on inner wall of cylinder made from aluminium alloy - Google Patents
Method for forming anodic oxide skin membrane on inner wall of cylinder made from aluminium alloy Download PDFInfo
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- CN1796098A CN1796098A CN 200410103454 CN200410103454A CN1796098A CN 1796098 A CN1796098 A CN 1796098A CN 200410103454 CN200410103454 CN 200410103454 CN 200410103454 A CN200410103454 A CN 200410103454A CN 1796098 A CN1796098 A CN 1796098A
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Abstract
The present invention relates to a method for forming anodic oxide skin film on the aluminium alloy cylinder inner wall. Said method includes the following main steps: using at least one insulating partition board to divide aluminium alloy cylinder inner wall into at least more than one adjacent oxide skin film formation interval and solid lubricant coating interval; mounting said insulating partition board on a stainless steel centre rotating shaft so as to implement turning operation; in the course of making anodic oxidation treatment utilizing the continuous rotation of said stainless steel centre rotating shaft to make said oxide skin film formation interval and solid lubricant coating interval be continuously, repeatedly and alternatively-changeably applied on the cylinder inner wall surface so as to make the cylinder inner wall surface obtain a hard wear-resistant oxide skin film surface layer which has uniform thickness and lubrication extent and has the permanent self-lubricating function.
Description
Technical field
The present invention relates to a kind of anodic oxide coating formation method of aluminium alloy cylinder inner wall, particularly relate to a kind of utilization at least a slice insulation demarcation strip the aluminium alloy cylinder inner wall distinguished had at least more than one adjacent oxide scale film to form between interval and kollag coating region, and this insulation demarcation strip and be by being located at a stainless steel centre rotational axis, and can implement turning operation, during with enforcement anodized process, this centre rotational axis can cause oxide scale film and form between interval and kollag coating region mutual in rotating continuously, the cylinder inner wall face of bestowing that repeats, and then to cause the cylinder inner wall face be to obtain expecting the hard of uniform thickness and degree of lubrication, wear-resisting, and have the anodic oxide coating formation method on the oxide scale film top layer of permanent self-lubricant effect.
Background technology
Lubricate in aluminium alloy base soft (not hard), not wear-resisting reaching inadequately, is the fact that the dealer knows altogether.Based on afore-mentioned characteristics, can be for making this aluminium alloy system cylinder block by the use of reality, this cylinder inner wall must be bestowed special processing processing again when making can.
Again, press aluminum current alloy cylinder inwall and implement the mode that processing is handled, probably include: in the aluminum alloy cylinder body casting process, imbed the alloy cast iron collar in advance, after going through following process, grinding, can form the cylinder inner wall face that is different from aluminum alloy material; Or directly bestow at the aluminium alloy cylinder inner wall and to electroplate or the chemical nickel plating, have the hard metal coating of a unlike material etc. with cylinder inner wall.
Undeniable, by the cylinder inner wall of the formed aluminum alloy cylinder body of aforementioned these methods, can be provided as the contact-making surface of piston running really; But, after the use of going through when long, the dealer but finds, preceding method resulting cylinder inner wall surface or coating, because and the difference on the material of aluminium alloy base, therefore in surface treatments such as casting, plating, reach in the process that cylinder inner wall high temperature uses, its grade all can produce following different defective.Promptly;
When 1, aluminum alloy cylinder body being imbedded the alloy cast iron collar as cylinder inner wall, because this alloy cast iron does not have lubricating layer, so the cylinder inner wall face of its formation does not have lubrication naturally, so, the situation that the first running of piston in cylinder will inevitably related generation has some setbacks.In addition, because the hardness of the cylinder wall that general alloy cast iron is made approximately is (HV250-350) about Vickers hardness 250-350, but under the action that piston runs up, this hardness but has not enough not wear-resisting phenomenon.Again, because this alloy cast iron collar and aluminum alloy cylinder body are to belong to different metallic objects, and the process that this cylinder uses is again to keep the condition of high temperature at any time, so its place of being bonded with each other such as grade very easily produces the crack even the situation of splitting because of thermal expansion condition difference.Moreover, because the cylinder inner wall face of this alloy cast iron is not the surface that is smooth, so in the piston operation process, phenomenon that carbide adheres to will more easily take place for it.
When 2, the aluminium alloy cylinder inner wall directly being bestowed electrodeposited coating, because this electrodeposited coating is not had a lubricity, related so the cylinder inner wall face of its formation does not have lubrication equally, the first running of this piston in cylinder also has the defective that has some setbacks equally.Certainly, because the hardness of this general electrodeposited coating is about Vickers hardness 600-1000 (HV600-1000), so its wearability be more aforementioned be that frame mode is preferable with the alloy cast iron collar, but, also belong to medium hardness, especially, the also non-same metallic object of this electrodeposited coating and aluminium alloy cylinder has flaky phenomenon to take place in the high temperature use equally.
Certainly, also there is the dealer that general Al-alloy products is bestowed chemical conversion epithelium method (Chemicalconversina coating), anodizing process (Anodizing) and spark discharge anodizing (Anode oxidation under spark discharge) at present, so that its surface is formed with an oxide skin rete.Wherein, the resulting case hardness of this enforcement chemical conversion epithelium method (as nickel plating, chromium plating) approximately is about HV600-1000, and at the cylinder inner wall of aluminum alloy cylinder body, the wearability that this kind hardness provides also has the anxiety of disliking deficiency slightly; Especially, be to belong to the different metal body with this coating and aluminum alloy cylinder body, the anxiety of peeling off is arranged in the high temperature use equally.In addition, when implementing anodizing process and spark discharge anodizing, different according to the alloying element in the aluminium alloy base composition (as strong acid solution or alkaline solution) in the employed electrolytic solution when handling, its grade can obtain the oxide skin rete of the above splendid hardness of HV2000 really, and the wearability of cylinder inner wall is improved really, simultaneously, with this oxide skin rete and aluminum alloy cylinder body is same metallic object, it also can Yin Gaowen and peeling phenomenon takes place, and to utilize this oxide skin rete be to have smooth surface, and the advantage that is difficult for adhering to is also arranged for the carbide in the cylinder; But,,, and, still be that the defective that can't promote the running smoothness is arranged with existing known identical so its first running for piston does not have lubricant effect fully because this oxide skin rete does not have lubricity.
Above-mentioned, also there is the dealer once to attempt in electrolyte, adding kollag (as the suspended particulate of graphite (Carbon), molybdenum bisuphide (MoS2)), to attempt in the electrolytic process of implementing oxidation processes, more or less lubricant can be arranged because of touching treatment surface, and when oxide-film generates, can be coated on the oxide scale film simultaneously, and then the oxide scale film that causes this formation is to have hard, wear-resisting and lubricated effect simultaneously.But, go through actual use after, the dealer also realizes the defective that this still has blemish in an otherwise perfect thing.Promptly; When implementing anode processing or the processing of spark discharge anode, because this Al-alloy products and kollag are to be immersed in the electrolyte with static mode simultaneously, so this kollag must be can't even contact and the oxide skin rete that is embedded into Al-alloy products, and only can on oxide scale film, coat thick, thin uneven, the lubricating layer that differs in the position, so, at the aluminium alloy cylinder inner wall, it is kind of a became uneven, the lubricant effect that the lubricating layer that differs in the position produces is had a greatly reduced quality except meeting, and still can't fully provide outside the smoothness of piston running just, especially, this is coated in the lubricant on oxide scale film surface, also can disappear or lower the situation of lubricity along with the continuous running of piston.
This shows that above-mentioned existing anodizing process (Anodizing) and spark discharge anodizing obviously still have inconvenience and defective, and demand urgently further being improved on actual manufacturing and using.In order to solve the problem that anodizing process (Anodizing) and spark discharge anodizing exist, relevant manufacturer there's no one who doesn't or isn't seeks the road that solves painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing anodizing process (Anodizing) and spark discharge anodizing exist, the design people is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, anodic oxide coating formation method in the hope of the aluminium alloy cylinder inner wall of founding a kind of new structure, can improve general existing anodizing process (Anodizing) and spark discharge anodizing, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
The objective of the invention is to, overcome the defective that existing anodizing process (Anodizing) and spark discharge anodizing exist, and provide a kind of anodic oxide coating formation method of aluminium alloy cylinder inner wall of new structure, technical problem to be solved is it to be distinguished the aluminium alloy cylinder inner wall with the insulation of a slice at least demarcation strip have at least more than one adjacent oxide scale film to form between interval and kollag coating region, and be that this insulation demarcation strip is installed in a stainless steel centre rotational axis, and can implement turning operation; When implementing the anodized process, utilize the continuous rotation of this stainless steel centre rotational axis, this oxide scale film form between interval and kollag coating region can be continuously and repeatedly alternately conversion bestow the cylinder inner wall face, this cylinder inner wall face then can be used and obtain expecting the hard, wear-resisting of uniform thickness and degree of lubrication, and the oxide scale film top layer of the permanent self-lubricant effect of tool.
The object of the invention to solve the technical problems realizes by the following technical solutions.The anodic oxide coating formation method of a kind of aluminium alloy cylinder inner wall that proposes according to the present invention, wherein be with the cylinder of the insulation of a slice at least demarcation strip with aluminum alloy cylinder body, distinguishing in advance has at least more than one adjacent oxide scale film to form between interval and kollag coating region, these insulation demarcation strips are to be installed on the stainless steel centre rotational axis, and this stainless steel centre rotational axis is to rotate with predetermined speed, and the oxide scale film that makes this formation form between interval and kollag coating region be mutually continuously and repeatedly alternately conversion corresponding to cylinder inner wall, and be to be equipped with kollag between this kollag coating region, and be that this cylinder block is put into electrolytic bath with whole or part, or electrolytic solution formed interval mode to inject oxide scale film, impose anodizing process or the spark discharge anodizing is carried out electrolytic treatments.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The anodic oxide coating formation method of aforesaid aluminium alloy cylinder inner wall, wherein said insulation demarcation strip are that plastic cement or rubber material are made firmly.
The anodic oxide coating formation method of aforesaid aluminium alloy cylinder inner wall, the end face of wherein said insulation demarcation strip are little aluminium alloy cylinder inner walls that is contacted with.
The anodic oxide coating formation method of aforesaid aluminium alloy cylinder inner wall, wherein saidly distinguishing each of forming or the oxide scale film that each is a plurality of by the insulation demarcation strip and form between interval and kollag coating region, is to be made as identical or different regular or irregular shape and big or small respectively.
The anodic oxide coating formation method of aforesaid aluminium alloy cylinder inner wall, wherein said stainless steel centre rotational axis is the tubular body that can be made as hollow, and is to be provided with a plurality of through holes form interval wall corresponding to oxide scale film.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, the anodic oxide coating formation method of aluminium alloy cylinder inner wall of the present invention has following design feature and advantage at least:
Lasting rotation along with the stainless steel centre rotational axis, this oxide scale film form interval and the kollag coating region between just can be continuously, in the repeatedly mutual map function, the cylinder inner wall that makes aluminum alloy cylinder body of nature forms one deck expection and uniform thickness, degree of lubrication hard, wear-resisting, and oxide scale film top layer with permanent self-lubricant effect, its use that not only makes the aluminium alloy cylinder is to have splendid wearability really, and the no known anxiety that plating exfoliation easily takes place under high temperature uses, and can make carbide be difficult for producing attachment phenomenon, especially, more can make the first running of piston produce splendid smoothness effect.
The needs of complying with on using obtain various differences but the oxide scale film top layer of easy hard, the wear-resisting and permanent self-lubricant effect of being controlled of tool, reach to have nonvolatil good result in the use.
In sum, the anodic oxide coating formation method of the aluminium alloy cylinder inner wall of special construction of the present invention, with the insulation of a slice at least demarcation strip the aluminium alloy cylinder inner wall being distinguished has at least more than one adjacent oxide scale film to form between interval and kollag coating region, and be that this insulation demarcation strip is installed in a stainless steel centre rotational axis, and can implement turning operation; When implementing the anodized process, utilize the continuous rotation of this stainless steel centre rotational axis, this oxide scale film form between interval and kollag coating region can be continuously and repeatedly alternately conversion bestow the cylinder inner wall face, this cylinder inner wall face then can be used and obtain expecting the hard, wear-resisting of uniform thickness and degree of lubrication, and the oxide scale film top layer of the permanent self-lubricant effect of tool.It has above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it all has bigger improvement on the structure of product or function, have large improvement technically, and produced handy and practical effect, and more existing anodizing process and spark discharge anodizing have the multinomial effect of enhancement, thereby be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, to understand feature of the present invention and technology contents in order can further knowing, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is the schematic perspective view of the embodiment of the invention.
Fig. 2 is the schematic top plan view of another embodiment of stainless steel centre rotational axis of the present invention.
A, electrolytic solution 1, cylinder block
10, cylinder 101, oxide scale film form the interval
102, between the kollag coating region 20, insulation demarcation strip
30, stainless steel centre rotational axis 300, centre bore
301, wall 302, through hole
40, kollag 50, solution accumulator tank
60, cold filtration system
The specific embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, its specific embodiment of the anodic oxide coating method of formationing, structure, feature and the effect thereof of the aluminium alloy cylinder inner wall that foundation the present invention is proposed, describe in detail as after.
By the explanation of the specific embodiment, when can being to reach technological means that predetermined purpose takes and effect to get one more deeply and concrete understanding to the present invention, yet appended graphic only provide with reference to and the usefulness of explanation, be not to be used for the present invention is limited.
At first, see also shown in Figure 1, the anodic oxide coating formation method of a kind of aluminium alloy cylinder inner wall of the present invention, it mainly is cylinder 10 with aluminum alloy cylinder body 1, distinguishing in advance with the insulation of a slice at least demarcation strip 20 has at least more than one adjacent oxide scale film to form between interval 101 and kollag coating region 102, and be that this insulation demarcation strip 20 is installed in a stainless steel centre rotational axis 30, with can be along with the rotation of this stainless steel centre rotational axis 30 is rotated in the lump, and be between the kollag coating region, 102 to be built-in with kollag 40, as graphite (Carbon), molybdenum bisuphide (MoS2), boron nitride (BN), tungsten sulfide (WS2), tin (SN), zinc (Zn), cadmium (Cd), resinous polymer kollags such as (PTFE).
Above-mentioned, the present invention implements oxide scale film to the aluminium alloy cylinder and forms the method for handling, and is visual different situations, and whole or part cylinder block are put into processing bath (electrolytic bath), or with the electrolytic solution injection method for it.
Promptly, (the present invention is as embodiment with the electrolytic solution injection method) as shown in Figure 1, be that several pieces insulation demarcation strips 20 (the present invention is as embodiment with four) are installed on the stainless steel centre rotational axis 30 during the invention process, and after placing the cylinder 10 of aluminum alloy cylinder body 1, its grade is just cylinder 10 to be divided into several intervals 101,102; Wherein, this interval 101 is that the electrolysis solution A is injected, and form the interval as oxide scale film, be to be built-in with kollag 40 (as particles such as graphite, molybdenum bisuphide) and form interval 101 adjacent intervals 102 at oxide scale film, and as solid lubricant applying interval.When directly injecting oxide scale film, electrolytic solution forms interval 101, and power supply just, negative electricity is switched to aluminum alloy cylinder body 1 and stainless steel centre rotational axis 30 respectively, and this stainless steel centre rotational axis 30 rotates when implementing anodized again at a predetermined velocity, this demarcation strip 20 that respectively insulate of mat is can be along with stainless steel centre rotational axis 30 rotates and the electrolyte that injects is stirred, the internal face of this aluminium alloy cylinder 10 then, can form interval 101 place's self-sows at oxide scale film and form the patina that has permeability slightly and have slight roughness, then, along with both the insulated lasting rotation of demarcation strip 20 of stainless steel centre rotational axis 30, between this kollag coating region 102 can continue one by one corresponding to aforementioned patina, and one by one this patina is coated with the quantitative lubricant of last layer with built-in kollag 40, continue it, along with being rotated further of stainless steel centre rotational axis 30, then should and the kollag coating region between 102 adjacent oxide scale films form interval 101, can continue again one by one corresponding to this patina of coating solid lubricant 40, and cause its regrowth and form one deck oxide scale film, and the kollag that causes this former coating is can be directly embedded in the newly-generated oxidized aluminum alloy thing cortex.So, lasting rotation along with stainless steel centre rotational axis 30, this oxide scale film form interval 101 and the kollag coating region between 102 just can be continuously, in the repeatedly mutual map function, the cylinder that causes aluminum alloy cylinder body 1 10 inwalls of nature form one deck expection and uniform thickness, degree of lubrication hard, wear-resisting, and oxide scale film top layer with permanent self-lubricant effect, its use that not only makes the aluminium alloy cylinder is to have splendid wearability really, and the no known anxiety that plating exfoliation easily takes place under high temperature uses, and can make carbide be difficult for producing attachment phenomenon, especially, more can make the first running of piston produce splendid smoothness effect.
Above-mentioned, the present invention is according to the needs of actual conditions, certainly can be with aluminum alloy cylinder body whole or partly put into electrolytic bath and operated, and this oxide scale film form interval 101 with the kollag coating region between 102 be subjected to both the insulated function mode of demarcation strip 20 rotation drivings of stainless steel centre rotational axis 30, be identical.But, during above-mentioned enforcement electrolytic solution injection method, owing to be electrolytic solution A directly to be injected oxide scale film form interval 101, and rotate at the demarcation strip 20 that is subjected to insulating and directly to be reclaimed after stirring by solution accumulator tank 50, and after 60 runnings of cold filtration system, be again to form interval 101 row for the injection oxide scale film again to recycle, so the electrolytic solution amount of this actual use is under the comparatively limited situation, to more can effectively reach electrolytic solution stirs, reclaim, cooling, advantage on filtering and reusing, simultaneously, for the operation that the aluminium alloy cylinder is implemented oxide scale film formation processing, also be to have mobility and have the effect that more easily cooperates production line operation.
Above-mentioned, this insulation demarcation strip 20 is that plastic cement or rubber material are made firmly, and its end face such as grade and be to keep little with the inwall of cylinder 10 to contact.
Above-mentioned, this is installed in the insulation demarcation strip 20 of stainless steel centre rotational axis 30, except having a slice at least, and the oxide scale film that makes formation form interval 101 with the kollag coating region between 102 be to have respectively outside at least more than one quantity that does not wait, this oxide scale film forms between interval 101 and kollag coating region 102 size, shape and can be made as identical or different regular or irregular.
Above-mentioned, this places between the kollag coating region kollag 40 in 102, according to different needs and can use two or more of single kind or different proportion.And according to different needs, the granular size of this kollag 40, shape and quantity also can be selected conversion arbitrarily.
Above-mentioned, implement when of the present invention with anodizing, be to take traditional anodizing process, promptly in strong acid solution (as sulfuric acid etc.), operated with 0-100 volt DC pulse voltage.Or can take the spark discharge anodizing, promptly in alkaline solution (as NaOH (NaH), potassium hydroxide (KOH), sodium metasilicate (Na2SiO3), potassium silicate (K2SiO3) etc.), operated, can obtain higher hardness and abrasion resistance with the higher dc pulse voltage of 150-1000 volt.
Please cooperate again consult shown in Figure 2, the present invention also can be made as stainless steel centre rotational axis 30 tubular body of hollow, and form interval 101 wall 301 in corresponding oxide scale film and be preset with a plurality of through holes 302, with electrolytic solution A is to be injected by the centre bore 300 of stainless steel centre rotational axis 30, and directly releases oxide scale film via each through hole 302 spray along with the rotation of stainless steel centre rotational axis 30 and form interval 101.
In other words, utilize method of the present invention, by the control oxide scale film form interval 101 and the kollag coating region between 102 quantity, size, shape and both conversion rates; And by kind, shape and the granular size of controlling kollag 40; And select anodizing and operation to control, then can be at cylinder 10 inwalls of aluminum alloy cylinder body, the needs of complying with on using obtain various differences but the oxide scale film top layer of easy hard, the wear-resisting and permanent self-lubricant effect of being controlled of tool, reach to have nonvolatil good result in the use.And this known lip-deep lubricant of oxide scale film that is coated in is that the defective that disappears or lower the anxiety of lubricant effect can be arranged along with use, more can use to reach the essence improvement.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (5)
1, a kind of anodic oxide coating formation method of aluminium alloy cylinder inner wall, it is characterized in that: be with the cylinder of the insulation of a slice at least demarcation strip with aluminum alloy cylinder body, distinguishing in advance has at least more than one adjacent oxide scale film to form between interval and kollag coating region, these insulation demarcation strips are to be installed on the stainless steel centre rotational axis, and this stainless steel centre rotational axis is to rotate with predetermined speed, and the oxide scale film that makes this formation form between interval and kollag coating region be mutually continuously and repeatedly alternately conversion corresponding to cylinder inner wall, and be to be equipped with kollag between this kollag coating region, and be that this cylinder block is put into electrolytic bath with whole or part, or electrolytic solution formed interval mode to inject oxide scale film, impose anodizing process or the spark discharge anodizing is carried out electrolytic treatments.
2, the anodic oxide coating formation method of aluminium alloy cylinder inner wall according to claim 1 is characterized in that wherein said insulation demarcation strip is that plastic cement or rubber material are made firmly.
3, the anodic oxide coating formation method of aluminium alloy cylinder inner wall according to claim 1 and 2, the end face that it is characterized in that wherein said insulation demarcation strip are little aluminium alloy cylinder inner walls that is contacted with.
4, the anodic oxide coating formation method of aluminium alloy cylinder inner wall according to claim 1 and 2, it is characterized in that wherein saidly distinguishing each of forming or the oxide scale film that each is a plurality of by the insulation demarcation strip and forming between interval and kollag coating region, is to be made as identical or different regular or irregular shape and big or small respectively.
5, the anodic oxide coating formation method of aluminium alloy cylinder inner wall according to claim 1, it is characterized in that wherein said stainless steel centre rotational axis is the tubular body that can be made as hollow, and be to be provided with a plurality of through holes form interval wall corresponding to oxide scale film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101034548A CN100496965C (en) | 2004-12-28 | 2004-12-28 | Method for forming anodic oxide skin membrane on inner wall of cylinder made from aluminium alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101034548A CN100496965C (en) | 2004-12-28 | 2004-12-28 | Method for forming anodic oxide skin membrane on inner wall of cylinder made from aluminium alloy |
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| CN1796098A true CN1796098A (en) | 2006-07-05 |
| CN100496965C CN100496965C (en) | 2009-06-10 |
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| CNB2004101034548A Expired - Fee Related CN100496965C (en) | 2004-12-28 | 2004-12-28 | Method for forming anodic oxide skin membrane on inner wall of cylinder made from aluminium alloy |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102770678A (en) * | 2010-02-24 | 2012-11-07 | 威伯科有限公司 | Device comprising a ring cylinder and a ring piston |
| CN104653557A (en) * | 2013-11-25 | 2015-05-27 | 空中客车运营简化股份公司 | Element for attaching parts of an assembly |
| CN107855489A (en) * | 2017-12-27 | 2018-03-30 | 安徽兴达动力机械有限公司 | A kind of melting of cylinder of petrol engine and pouring technology |
-
2004
- 2004-12-28 CN CNB2004101034548A patent/CN100496965C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102770678A (en) * | 2010-02-24 | 2012-11-07 | 威伯科有限公司 | Device comprising a ring cylinder and a ring piston |
| CN104653557A (en) * | 2013-11-25 | 2015-05-27 | 空中客车运营简化股份公司 | Element for attaching parts of an assembly |
| CN107855489A (en) * | 2017-12-27 | 2018-03-30 | 安徽兴达动力机械有限公司 | A kind of melting of cylinder of petrol engine and pouring technology |
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| Publication number | Publication date |
|---|---|
| CN100496965C (en) | 2009-06-10 |
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