CN209972048U - High strength lightweight aluminum alloy wheel hub - Google Patents
High strength lightweight aluminum alloy wheel hub Download PDFInfo
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- CN209972048U CN209972048U CN201920439340.2U CN201920439340U CN209972048U CN 209972048 U CN209972048 U CN 209972048U CN 201920439340 U CN201920439340 U CN 201920439340U CN 209972048 U CN209972048 U CN 209972048U
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Abstract
A high-strength lightweight aluminum alloy wheel hub relates to an aluminum alloy wheel hub and is provided with the aluminum alloy wheel hub, and is characterized in that a hollow reinforced pipe network is arranged in the aluminum alloy wheel hub and comprises at least three annular wheel rim pipes positioned at a wheel rim, spoke pipes positioned at spokes and a central hub pipe positioned at a central hub, the wheel rim pipes are arranged in parallel in the axial direction of the wheel hub, connecting pipes are arranged among the wheel rim pipes, the wheel rim pipes are connected with the central hub pipe through the spoke pipes, and the connecting pipes and at least one spoke pipe are positioned on the same plane; the melting point of the material of the reinforced pipe network is higher than that of the aluminum alloy, and the strength of the material of the reinforced pipe network is higher than that of the aluminum alloy. The utility model has the advantages of simple structure, simple manufacturing method, light weight, high strength, etc.
Description
Technical Field
The invention relates to an aluminum alloy automobile hub, in particular to a high-strength light-weight aluminum alloy hub with light weight, high strength and a hollow structure.
Background
It is known that, in the existing aluminum alloy wheel casting technology, no matter low-pressure casting and gravity casting, the whole wheel is of a solid structure, and the inside of the appearance of the product is made of solid aluminum alloy. The existing solid aluminum alloy wheel casting has heavy weight generally and only general strength performance. The weight of the wheel hub can greatly increase the overall vehicle weight, influence the vehicle performance, increase the oil consumption and waste energy, and the production of the wheel hub with high strength and light weight becomes an important target of wheel hub manufacturers at present when the fuel oil continuously rises.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide a high-strength light-weight aluminum alloy hub with light weight, high strength and a hollow structure.
The technical scheme adopted by the invention for solving the defects of the prior art is as follows:
a high-strength light-weight aluminum alloy wheel hub is provided with an aluminum alloy wheel hub and is characterized in that a hollow strengthening pipe network is arranged in the aluminum alloy wheel hub and comprises at least three annular wheel rim pipes positioned at a wheel rim, spoke pipes positioned at spokes and a central hub pipe positioned at the central hub, the wheel rim pipes are arranged in parallel in the axial direction of the wheel hub, connecting pipes are arranged among the wheel rim pipes, the wheel rim pipes are connected with the central hub pipe through the spoke pipes, and the connecting pipes and at least one spoke pipe are positioned on the same plane; the melting point of the material of the reinforced pipe network is higher than that of the aluminum alloy, and the strength of the material of the reinforced pipe network is higher than that of the aluminum alloy.
The central hub pipe is formed by connecting at least two annular pipes which are arranged in parallel through a central hub connecting pipe. The central hub connecting pipe is arranged in the axial direction of the aluminum alloy hub.
The reinforced pipe network comprises a rim pipe positioned at the rim, and the rim pipe is connected with an adjacent rim pipe through a rim connecting pipe.
The annular central reinforcing pipe is arranged outside the central hub pipe and outside a central hub bolt hole of the aluminum alloy hub, and the central reinforcing pipe is connected with the spoke pipe. Further reducing the quality of the aluminum alloy hub and improving the strength of the aluminum alloy hub.
The rim pipe, the spoke pipe, the central hub pipe, the connecting pipe, the central hub connecting pipe, the rim connecting pipe and the central reinforcing pipe are connected by welding to form a reinforced pipe network with the same shape as the aluminum alloy hub, and the outer diameter of the reinforced pipe network is 0.2-0.8 times, preferably 0.3-0.6 times of the wall thickness of the aluminum alloy hub.
At least three supporting and positioning blocks are arranged on the outer side of the reinforced pipe network; the melting points of the three supporting and positioning blocks are 630-660 ℃, preferably 640-655 DEG C
The supporting and positioning block is made of metal or alloy material without side effect on the aluminum alloy hub. If the AZ91D magnesium alloy is selected, the liquid magnesium alloy is mixed into the aluminum alloy material after being melted, only the hardness of the aluminum alloy wheel is increased, and no side effect is caused.
The supporting and positioning block is provided with a circulation hole or is in a net shape. The supporting and positioning blocks support and position the reinforced pipe network in the pouring mold, so that the reinforced pipe network is in a preset position, and meanwhile, the fluidity of molten aluminum is not influenced when the molten aluminum is injected into the mold.
The reinforced pipe network is made of materials such as ordinary 45# metal steel pipes, titanium alloy pipes and the like.
The manufacturing method of the high-strength light-weight aluminum alloy hub is characterized by comprising the following steps of:
a. selecting pipes meeting the requirements, and welding the pipes into a reinforced pipe network according to the structure;
b. preheating the strengthening pipe network and the support positioning blocks to 380-460 ℃, and using the support positioning blocks to support and position the strengthening pipe network on a bottom die of the low-pressure casting die of the hub;
c. the (four pairs) side dies are closed, and the upper die is closed; the reinforced pipe network is positioned in a (hub casting) space surrounded by the bottom die, the side die and the upper die and is not contacted with the bottom die, the side die and the upper die.
d. And (3) continuously injecting 670-690 ℃ molten aluminum into the hub low-pressure casting die through a gate of the hub low-pressure casting die for mold filling, maintaining the pressure for 260-350 seconds, and demolding after cooling by a water cooling or air cooling mechanism to obtain the high-strength light-weight aluminum alloy hub blank.
The reinforced pipe network is positioned in a (hub casting) space surrounded by the bottom die, the side die and the upper die, and is spaced from the bottom die, the side die and the upper die by 0.3-1 cm.
The high-strength lightweight aluminum alloy hub of the invention (measured) is 1.1-1.5 times as strong as a solid aluminum alloy hub of the same size, and is 70% -90% of the solid aluminum alloy hub of the same size in weight. When the titanium alloy pipe is selected as the reinforced pipe network, the strength of the titanium alloy pipe is 1.4-1.5 times that of the solid aluminum alloy hub with the same size, and the weight of the titanium alloy pipe is 70-80% of that of the solid aluminum alloy hub with the same size.
Drawings
Fig. 1 is a partial sectional structural schematic view of the present invention.
Fig. 2 is a schematic view of the structure of the reinforced pipe network of the present invention.
Fig. 3 is a schematic structural diagram of the present invention, in which a support positioning block is used to support and position the reinforced pipe network on the bottom die of the low-pressure casting mold of the hub, and the upper die is not closed.
Detailed Description
The high-strength light-weight aluminum alloy wheel hub shown in fig. 1-3 is provided with an aluminum alloy wheel hub 2, a hollow strengthening pipe network is cast in the aluminum alloy wheel hub 2, the strengthening pipe network comprises at least three annular wheel rim pipes 5 positioned at the wheel rim of the aluminum alloy wheel hub, spoke pipes 4 positioned at spokes of the aluminum alloy wheel hub and a central hub pipe 3 positioned at the central hub of the aluminum alloy wheel hub, and the central hub is a part at the center of the aluminum alloy wheel hub and used for being connected with a shaft; the central hub pipe 3 is formed by connecting three parallel annular pipes through a central hub connecting pipe, and the central hub connecting pipe is arranged in the axial direction of the aluminum alloy wheel hub. The rim tubes 5 are arranged in parallel in the axial direction of the hub, connecting tubes 7 are arranged among the rim tubes, the rim tubes 5 are connected with the central hub tube 3 through spoke tubes 4, and any connecting tube 7 and at least one spoke tube are positioned on the same plane; the reinforced pipe network comprises a rim pipe positioned at the rim of the aluminum alloy hub, as can be seen from fig. 2, an inner rim pipe 6 and an outer rim pipe 1 are respectively arranged at the inner rim and the outer rim of the aluminum alloy hub, and the rim pipe is connected with the adjacent rim pipe through a rim connecting pipe 10; as can be seen from figure 2, the rim tube is indirectly connected with the spoke tube through the outer rim tube 1, the annular central reinforcing tube 9 is arranged at the outer side (in the radial direction) of the central hub tube 3 and the outer part of the central hub bolt hole of the aluminum alloy hub, and the central reinforcing tube 9 is connected with the spoke tube, so that the quality of the aluminum alloy hub can be further reduced, and the strength of the aluminum alloy hub can be improved. The melting point of the material of the reinforced pipe network is higher than that of the aluminum alloy, and the strength of the material of the reinforced pipe network is higher than that of the aluminum alloy. The rim pipe, the spoke pipe, the central hub pipe, the connecting pipe, the central hub connecting pipe, the rim connecting pipe and the central reinforcing pipe are connected through welding to form a reinforced pipe network with the same shape (integral shape) as that of the aluminum alloy hub, and the outer diameter of the pipe (of each pipe) is 0.2-0.8 times of the wall thickness of the corresponding part of the aluminum alloy hub.
The invention is further improved, at least three supporting and positioning blocks 8 are arranged on the outer side surface (one side of the spoke tube) of the reinforced pipe network; the melting point of the support positioning block 8 (material) is 630-660 ℃, preferably 640-655 ℃. The supporting and positioning block is made of metal or alloy material without side effect on the aluminum alloy hub. If the AZ91D magnesium alloy is selected, the liquid magnesium alloy is mixed into the aluminum alloy material after being melted, only the hardness of the aluminum alloy wheel is increased, and no side effect is caused. As can be seen from the figure, four supporting and positioning blocks are respectively arranged at the central hub pipe and the outer rim pipe of the outer side surface of the reinforced pipe network in an annular array, so that the supporting is more stable. Further improved, the supporting and positioning block is provided with flow holes or is in a net shape, the supporting and positioning block is melted after 50-60 seconds after being placed in 670-690 ℃ aluminum water, and the supporting and positioning block is melted into a liquid state within 1.2-2 min. The supporting and positioning blocks support and position the reinforced pipe network in the pouring mold, so that the reinforced pipe network is in a preset position, and meanwhile, the fluidity of molten aluminum is not influenced when the molten aluminum is injected into the mold. The reinforced pipe network is made of materials such as ordinary 45# metal steel pipes, titanium alloy pipes and the like.
The manufacturing method of the high-strength light-weight aluminum alloy hub is characterized by comprising the following steps of:
a. selecting the pipes meeting the requirements, welding the pipes into a reinforced pipe network according to the structure, wherein the reinforced pipe network is shown in figure 2.
b. Preheating the strengthening pipe network and the support positioning blocks to 380-460 ℃, and using the support positioning blocks to support and position the strengthening pipe network on a bottom die of the low-pressure casting die of the hub; the preheating temperature is too high, which not only consumes energy, but also causes the deformation of the hollow reinforced pipe; if the temperature is too low, the aluminum water around the aluminum water is solidified in advance, slag inclusion and cold insulation bars are generated, and the aluminum water cannot be smoothly demoulded.
c. The (four) side dies 11 are closed, and the upper die is closed; the reinforced pipe network is positioned in a (hub casting) space surrounded by the bottom die, the side die 11 and the upper die and is not contacted with the bottom die, the side die and the upper die.
d. And (3) continuously injecting 670-690 ℃ molten aluminum into the hub low-pressure casting die through a gate of the hub low-pressure casting die for mold filling, maintaining the pressure for 260-350 seconds, and demolding after cooling by a water cooling or air cooling mechanism to obtain the high-strength light-weight aluminum alloy hub blank.
The reinforced pipe network is positioned in a (hub casting) space surrounded by the bottom die, the side die and the upper die, and is spaced from the bottom die, the side die and the upper die by 0.3-1 cm.
When 670-, since the melting point of the AZ91D magnesium alloy is 650 ℃ which is slightly lower than the melting point of the aluminum alloy 660 ℃, the support positioning block begins to be gradually melted from solid state to liquid state within about 50 seconds to 60 seconds and is melted into liquid state within 2 minutes, when the aluminum alloy hub blank is cast, the cooling solidification starts from the inner rim part (the inner rim pipe at the inner side of the reinforced pipe network) after the average mold filling is carried out for 25-30 seconds, the part (the inner rim pipe) of the hollow reinforced pipe network at the inner rim is solidified and positioned, the supporting and positioning block starts to melt after 20-30 seconds, the positioning effect is gradually lost, the positioning of the hollow reinforced pipe is transferred from the part to the inner rim, and the molten liquid magnesium alloy is mixed into the aluminum alloy material, so that the hardness of the aluminum alloy wheel is only increased, and no side effect is caused; after two minutes, the aluminum alloy at the supporting and positioning block begins to solidify. The high-strength lightweight aluminum alloy hub is 1.1-1.5 times as high as a solid aluminum alloy hub with the same size in strength, and is 70% -90% of the solid aluminum alloy hub with the same size in weight. When the titanium alloy pipe is selected as the reinforced pipe network, the strength of the titanium alloy pipe is 1.4-1.5 times that of the solid aluminum alloy hub with the same size, and the weight of the titanium alloy pipe is 70-80% of that of the solid aluminum alloy hub with the same size.
Claims (8)
1. A high-strength light-weight aluminum alloy wheel hub is provided with an aluminum alloy wheel hub and is characterized in that a hollow strengthening pipe network is arranged in the aluminum alloy wheel hub and comprises at least three annular wheel rim pipes positioned at a wheel rim, spoke pipes positioned at spokes and a central hub pipe positioned at the central hub, the wheel rim pipes are arranged in parallel in the axial direction of the wheel hub, connecting pipes are arranged among the wheel rim pipes, the wheel rim pipes are connected with the central hub pipe through the spoke pipes, and the connecting pipes and at least one spoke pipe are positioned on the same plane; the melting point of the material of the reinforced pipe network is higher than that of the aluminum alloy, and the strength of the material of the reinforced pipe network is higher than that of the aluminum alloy.
2. The high-strength light-weight aluminum alloy wheel hub according to claim 1, wherein the central hub pipe is formed by connecting at least two annular pipes arranged in parallel through a central hub connecting pipe.
3. The high strength lightweight aluminum alloy hub of claim 2, wherein said reinforcing mesh comprises rim tubes at the rim, and said rim tubes are connected to adjacent rim tubes by rim connecting tubes.
4. The high-strength light-weight aluminum alloy hub according to claim 3, wherein an annular central reinforcing tube is arranged outside the central hub tube and outside a central hub bolt hole of the aluminum alloy hub, and the central reinforcing tube is connected with the spoke tube.
5. The high-strength light-weight aluminum alloy hub according to claim 4, wherein the rim tube, the spoke tube, the central hub tube, the connecting tube, the central hub connecting tube, the rim connecting tube and the central reinforcing tube are connected by welding to form a reinforced pipe network with the same shape as the aluminum alloy hub, and the outer diameter of the reinforced pipe network is 0.2-0.8 times of the wall thickness of the aluminum alloy hub.
6. The high-strength light-weight aluminum alloy hub according to claim 5, wherein at least three support positioning blocks are arranged on the outer side of the reinforced pipe network; the melting points of the three supporting and positioning blocks are 630-660 ℃.
7. The high-strength light-weight aluminum alloy hub according to claim 6, wherein the support positioning block is made of a metal or an alloy material without side effects on the aluminum alloy hub.
8. The high-strength light-weight aluminum alloy hub according to claim 6, wherein the reinforced pipe network is made of a material such as a normal 45# metal steel pipe and a titanium alloy pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920439340.2U CN209972048U (en) | 2019-04-02 | 2019-04-02 | High strength lightweight aluminum alloy wheel hub |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920439340.2U CN209972048U (en) | 2019-04-02 | 2019-04-02 | High strength lightweight aluminum alloy wheel hub |
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| CN209972048U true CN209972048U (en) | 2020-01-21 |
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| CN201920439340.2U Expired - Fee Related CN209972048U (en) | 2019-04-02 | 2019-04-02 | High strength lightweight aluminum alloy wheel hub |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110053419A (en) * | 2019-04-02 | 2019-07-26 | 威海万丰奥威汽轮有限公司 | A kind of High-strength light-weight aluminium alloy wheel hub and its manufacturing method |
-
2019
- 2019-04-02 CN CN201920439340.2U patent/CN209972048U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110053419A (en) * | 2019-04-02 | 2019-07-26 | 威海万丰奥威汽轮有限公司 | A kind of High-strength light-weight aluminium alloy wheel hub and its manufacturing method |
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Granted publication date: 20200121 |