CN101417585A - A kind of magnesium alloy vehicle wheel - Google Patents
A kind of magnesium alloy vehicle wheel Download PDFInfo
- Publication number
- CN101417585A CN101417585A CNA2008102379017A CN200810237901A CN101417585A CN 101417585 A CN101417585 A CN 101417585A CN A2008102379017 A CNA2008102379017 A CN A2008102379017A CN 200810237901 A CN200810237901 A CN 200810237901A CN 101417585 A CN101417585 A CN 101417585A
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- magnesium alloy
- vehicle wheel
- connecting hole
- bolt connecting
- cannula
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Abstract
The present invention relates to a kind of magnesium alloy vehicle wheel, be provided with the cannula-like metal inserted piece consistent in the bolt connecting hole of its hub portion, be provided with insulating medium layer between bolt connecting hole and the cannula-like metal inserted piece with the connecting bore shape.Said insulating medium layer can be coated on the bolt connecting hole inwall, can be the dielectric cover also, is installed between bolt connecting hole and the cannula-like metal inserted piece.The attachment face of hub of the present invention portion carries out surface oxidation treatment, is fixed with the elastic medium circle in the outer rim of attachment face.Be provided with cannula-like metal inserted piece and insulating medium layer in the bolt connecting hole of hub of the present invention portion, can effectively solve the electrocorrosion protection question of magnesium alloy vehicle wheel hub portion, prolonging the service life of magnesium alloy vehicle wheel, increase vehicle safety, is a kind of desirable magnesium alloy vehicle wheel.
Description
Technical field
The present invention relates to magnesium alloy vehicle wheel and corrosion guard field thereof, specifically a kind of magnesium alloy vehicle wheel.
Background technology
We know that magnesium alloy vehicle wheel has in light weight, the strength-to-density ratio advantages of higher.In recent years, the application of magnesium alloy in other fields such as automobile and parts more and more widely.But because magnesium alloy chemical character is active, the standard potential of magnesium has only-2.73v, if the long-term direct contact of material of magnesium parts and steel or other structures, electrochemical corrosion can take place in the magnesium parts, influence the service life of parts even the safety of vehicle, so the corrosion guard problem of magnesium alloy is restricting Application of Magnesium always.
In order to solve the oxide etch problem of magnesium alloy, the researcher has carried out a large amount of research both at home and abroad, carry out thermal spraying for the magnesium alloy vehicle wheel surface, EFI is coated with modes such as AL metal level to carry out, but because the structure more complicated of magnesium alloy vehicle wheel, when magnesium alloy vehicle wheel was installed on the axletree of locomotives such as automobile or motor bike, the bolt connecting hole that needs to pass hub portion with bolt was fixed, electrochemical corrosion easily takes place in the magnesium alloy direct contact of the long-term and magnesium alloy vehicle wheel hub portion of the bolt of iron and steel material quality.Because the degree of depth bore of the bolt connecting hole of wheel hub portion differs, adopt the mode of spraying, be difficult to even spray-on coating to bolt connecting hole inside, even if can be at the inner protective filmy layer that forms of bolt connecting hole, but because coat thickness is thinner, when installing and fixing bolt, the coating destructible causes producing electrocorrosion, influences the service life and the safety of wheel.Some researchers are also arranged, adopt the anodization of Mg alloy surface plasma micro-arc, surface treatment methods such as laser surface heat treatment and laser surface alloying and physical vapor deposition (PVD), chemical vapor deposition or electron beam evaporation, but except that micro-arc anodic oxidation only needs simple power supply, other technologies all need special equipment, perhaps need carry out under comparison exacting terms such as vacuum, cost is also than higher.
In known technology, Chinese invention patent (application number 200710161317.3) discloses a kind of improved magnesium parts galvanic corrosion guard technology that uses the isolator acquisition of cast-in-place, its with magnesium or magnesium alloy cast in a preformed galvanic corrosion isolator around, described preformed galvanic corrosion isolator is negative for magnesium or magnesium alloy component, make by having the material that size is in the characteristic of the Galvanic electric potential difference between magnesium and the ferrous metals, play the effect that prevents galvanic corrosion.But because the accuracy requirement height of the bolt connecting hole of magnesium alloy vehicle wheel, employing casts in the hub portion accuracy requirement that preformed galvanic corrosion isolator mode on every side can't satisfy wheel with magnesium or magnesium alloy, to mold design, castings etc. require high, technology difficulty is big, be difficult in the protection of magnesium alloy vehicle wheel hub portion, use, inapplicable hub portion at magnesium alloy vehicle wheel adopts this technology, because magnesium alloy is in the electrocorrosion problem of the hub portion of wheel, influence the service life of magnesium alloy vehicle wheel, wheel is as safety member, have influence on the safety issue of vehicle, make magnesium alloy vehicle wheel aspect widespread use, be very restricted.
Summary of the invention
Technical matters to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, provides a kind of rational in infrastructure, and the electrocorrosion protective capacities is strong, the magnesium alloy vehicle wheel of long service life.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of magnesium alloy vehicle wheel, it is characterized in that: be provided with the cannula-like metal inserted piece consistent in the bolt connecting hole of its hub portion, be provided with insulating medium layer between bolt connecting hole and the cannula-like metal inserted piece with the connecting bore shape.
The said insulating medium layer of the present invention can be coated on the bolt connecting hole inwall.It can be the dielectric cover also, is installed between bolt connecting hole and the cannula-like metal inserted piece.
The outer rim of the said hub of the present invention portion attachment face is provided with fin or groove, is fixed with the elastic medium circle by fin or groove.Hub portion attachment face surface is provided with protective oxide layer, prevents the electrocorrosion that magnesium alloy vehicle wheel hub portion's attachment face and car body generation direct contact produce.
The said cannula-like metal inserted piece of the present invention is provided with a step, combines closely with the step of bolt connecting hole.The cannula-like metal inserted piece also can be a plurality of steps, matches with the wheel hub portion bolt connecting hole of corresponding many steps.Insulating medium layer bonding multiple stage type metal inserted piece is fixed on bolt connecting hole inside, and metal inserted piece length is less than the degree of depth of bolt connecting hole.
The present invention is owing to be provided with cannula-like metal inserted piece and insulating medium layer in the bolt connecting hole of hub portion, against existing technologies, structure of the present invention can effectively solve the electrocorrosion protection question of magnesium alloy vehicle wheel hub portion, prolong the service life of magnesium alloy vehicle wheel, increase vehicle safety, promote the widespread use of magnesium alloy vehicle wheel.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the right elevation of Fig. 1.
Fig. 3 is the left view of Fig. 1
Fig. 4 is the assembling scheme drawing of multiple stage type metal inserted piece.
Fig. 5 is the assembling scheme drawing of another kind of multiple stage type metal inserted piece.
Fig. 6 is the assembling scheme drawing of trumpet type metal inserted piece.
1. hub portions among the figure, 2. bolt connecting hole, 3. insulating medium layer, 4. cannula-like metal insert, 5. protective oxide layer, 6. fin, 7. dielectric circle.
The specific embodiment
As can be seen from Figure 1, a kind of magnesium alloy vehicle wheel, wheel body is by magnesium alloy processing, and the structure of main body and existing wheel are basic identical, and hub portion is provided with some bolt connecting holes.Be provided with the cannula-like metal inserted piece 4 consistent in the bolt connecting hole 2 of magnesium alloy vehicle wheel hub of the present invention portion 1, be provided with insulating medium layer 3 between bolt connecting hole 2 and the cannula-like metal inserted piece 4 with the connecting bore shape.
The said insulating medium layer 3 of the present invention can be coated on bolt connecting hole 2 inwalls, is evenly distributed in the bolt connecting hole 2 and between the tubular metal inserts 4.Insulating medium layer 3 can form for the non-conductive adhesives, evenly is coated in the bolt connecting hole 2, metal insert 4 is fastened in the bolt connecting hole 2 of hub portion of magnesium alloy vehicle wheel.Insulating medium layer 3 can be the dielectric cover also, is embedded in the bolt connecting hole 2, is installed between bolt connecting hole 2 and the cannula-like metal inserted piece 4.Insulating medium layer 3 is used for preventing the electrochemical corrosion between magnesium alloy vehicle wheel hub portion 1 and the cannula-like metal insert 4.
In the cannula-like metal insert 4 dump bolt connecting bores 2 of the present invention, tubular metal mold insert 4 is provided with a step, and said cannula-like metal inserted piece 4 is provided with a step, combines closely with the step of corresponding bolts connecting bore 2.As shown in Figure 1, the total length of cannula-like metal insert 4 is less than the degree of depth of bolt connecting hole 2.
Fig. 2 is the left view of magnesium alloy vehicle wheel, and the attachment face of the hub portion 1 of magnesium alloy vehicle wheel carries out the capillary chemistry oxidation treatment, forms the protective oxide layer 5 of one deck stable uniform, prevents the electrocorrosion that magnesium alloy vehicle wheel hub portion's attachment face and car body generation direct contact produce.
The outer rim of the said hub of the present invention portion attachment face is provided with fin or groove, is fixed with elastic medium circle 7 by fin or groove.As shown in Figure 3, the attachment face outer rim of the hub portion of magnesium alloy vehicle wheel is fixed with dielectric circle 7, it can be the elastic caoutchouc circle, around the outer rim of attachment face, fin 6 is set, with fixing elastic insulated medium circle 7, elastic insulated medium circle 7 is sealed in the outer ring of hub portion 1 closely, and protection laying dust and water etc. are to the oxide etch of magnesium alloy vehicle wheel hub portion 1.
Cannula-like metal inserted piece 4 of the present invention also can be a plurality of steps, matches with the wheel hub portion bolt connecting hole 2 of corresponding many steps.Fig. 4, Fig. 5, Fig. 6 are the cut-away illustration that adopts multiple stage type cannula-like metal inserted piece.Fig. 4 middle sleeve shape metal inserted piece 4 is a plurality of steps, match with the bolt hole 2 of the magnesium alloy vehicle wheel hub portion 1 that is processed as many steps, dielectric 3 bonding multiple stage type metal inserted pieces 4 are in 2 inside, bolt hole, and cannula-like metal inserted piece 4 length are less than the degree of depth of bolt connecting hole 2.Cannula-like metal inserted piece 4 length shown in Figure 5 are identical with the degree of depth of bolt connecting hole 2.Fig. 6 is the scheme drawing that adopts trumpet type cannula-like metal inserted piece.As shown in Figure 6, cannula-like metal inserted piece 4 is a horn shape.Above-mentioned embodiment can increase the bonded area of magnesium alloy vehicle wheel hub portion and metal inserted piece, avoids stressed the concentrating in subregion of wheel hub portion, can strengthen the fastening degree of metal inserted piece and wheel hub portion simultaneously.
Claims (8)
1. a magnesium alloy vehicle wheel is characterized in that: be provided with the cannula-like metal inserted piece consistent with the connecting bore shape in the bolt connecting hole of its hub portion, be provided with insulating medium layer between bolt connecting hole and the cannula-like metal inserted piece.
2. magnesium alloy vehicle wheel according to claim 1 is characterized in that: said insulating medium layer is coated on the bolt connecting hole inwall.
3. magnesium alloy vehicle wheel according to claim 1 is characterized in that: said insulating medium layer is the dielectric cover, is installed between bolt connecting hole and the cannula-like metal inserted piece.
4. magnesium alloy vehicle wheel according to claim 1 is characterized in that: the outer rim of said hub portion attachment face is provided with fin, is fixed with the elastic medium circle by fin.
5. magnesium alloy vehicle wheel according to claim 1 is characterized in that: said hub portion attachment face surface is provided with protective oxide layer.
6. magnesium alloy vehicle wheel according to claim 1 is characterized in that: said cannula-like metal inserted piece is provided with a step, combines closely with the step of bolt connecting hole.
7. magnesium alloy vehicle wheel according to claim 1 is characterized in that: said cannula-like metal inserted piece is a plurality of steps, matches with the wheel hub portion bolt connecting hole of corresponding many steps.
8. magnesium alloy vehicle wheel according to claim 1 is characterized in that: the outer rim of said hub portion attachment face is provided with groove with fixing elastic medium circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102379017A CN101417585A (en) | 2008-11-28 | 2008-11-28 | A kind of magnesium alloy vehicle wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102379017A CN101417585A (en) | 2008-11-28 | 2008-11-28 | A kind of magnesium alloy vehicle wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101417585A true CN101417585A (en) | 2009-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102379017A Pending CN101417585A (en) | 2008-11-28 | 2008-11-28 | A kind of magnesium alloy vehicle wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101417585A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381132A (en) * | 2010-08-31 | 2012-03-21 | 上海汇众汽车制造有限公司 | Automobile hub and processing technology thereof |
| CN102922941A (en) * | 2012-11-19 | 2013-02-13 | 江苏中联铝业有限公司 | Vehicle wheel spoke typecasting insert block |
-
2008
- 2008-11-28 CN CNA2008102379017A patent/CN101417585A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381132A (en) * | 2010-08-31 | 2012-03-21 | 上海汇众汽车制造有限公司 | Automobile hub and processing technology thereof |
| CN102381132B (en) * | 2010-08-31 | 2014-04-23 | 上海汇众汽车制造有限公司 | Automobile hub and processing technology thereof |
| CN102922941A (en) * | 2012-11-19 | 2013-02-13 | 江苏中联铝业有限公司 | Vehicle wheel spoke typecasting insert block |
| CN102922941B (en) * | 2012-11-19 | 2016-03-02 | 江苏中联铝业有限公司 | Vehicle wheel spoke typefounding insert |
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| 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 |
Open date: 20090429 |