CN109732061B - Casting forming method for aluminum casting with built-in steel sleeve - Google Patents
Casting forming method for aluminum casting with built-in steel sleeve Download PDFInfo
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- CN109732061B CN109732061B CN201910133755.1A CN201910133755A CN109732061B CN 109732061 B CN109732061 B CN 109732061B CN 201910133755 A CN201910133755 A CN 201910133755A CN 109732061 B CN109732061 B CN 109732061B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 100
- 239000010959 steel Substances 0.000 title claims abstract description 100
- 238000005266 casting Methods 0.000 title claims abstract description 61
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Manufacture Of Motors, Generators (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to a casting forming method of an aluminum casting with a built-in steel sleeve, which comprises the following steps: placing the heated steel sleeve on a steel sleeve positioning sleeve, and then placing the steel sleeve positioning sleeve on a lower die positioning table of a casting die for positioning; then the upper die of the casting die falls down to be matched with the die, and the split cone penetrates into the center hole of the steel sleeve to be matched with the steel sleeve; immediately lifting the upper die to open the die after die assembly, sleeving a steel sleeve outside the split cone, and positioning the steel sleeve on the lower surface of the upper die; taking out the steel sleeve positioning sleeve from the lower die positioning table, and then falling down the upper die again for die assembly, and die assembly of the side die; the aluminum liquid enters a mold cavity from a sprue bush for filling, and after the stages of filling, pressure maintaining and pressure releasing, the casting of the box parts is completed; and (5) opening the side die, lifting the upper die again to open the die, taking out the casting, and completing the casting forming process of the aluminum alloy box body parts with the built-in steel sleeves. The advantages are that: the forming method has the advantages of accurate positioning of the steel sleeve, no need of modifying the existing casting equipment, and simple and feasible structure.
Description
Technical Field
The invention belongs to the field of nonferrous metal metallurgy, and relates to a casting forming method of an aluminum alloy automobile part with a built-in steel sleeve.
Background
In recent years, as new energy automobiles are developed faster and faster, the demand for weight reduction of automobile parts is also increasing. The materials of the box parts are gradually replaced by aluminum alloy instead of cast iron, and the use of the aluminum alloy not only greatly reduces the weight of the box parts, but also improves the heat dissipation effect.
Although the aluminum alloy box parts have a plurality of advantages, the service life of the bearing seat part is shorter due to the strength of the aluminum material, and the service life requirement of the automobile on the box parts cannot be met. In order to solve the problem, a method of internally arranging a steel sleeve in the box body part is adopted, so that the material of the bearing seat part is alloy steel, and the service life of the aluminum alloy box body part is prolonged.
The low-pressure casting is one of the manufacturing methods of aluminum alloy box parts, and a steel sleeve needs to be cast inside the box parts, so that other parts except a central hole are wrapped by aluminum. Because the low-pressure casting is to inject the molten aluminum into the die cavity from the lower part of the die, the riser is arranged at the lower end of the casting, if the steel sleeve is arranged near the riser and the lower end of the steel sleeve is required to be wrapped by aluminum, the steel sleeve cannot be directly placed on the upper surface of the lower die for positioning in the casting process, and the steel sleeve is required to be placed on the lower surface of the upper die, so that the difficulty of casting production of aluminum alloy box parts is solved by setting the casting process.
Therefore, research and development of a casting forming method of an aluminum casting with a built-in steel sleeve are very necessary to meet the casting production requirement of aluminum alloy box parts for automobiles and improve the technical level of the aluminum alloy casting industry in China.
Disclosure of Invention
The invention aims to solve the problem that a steel sleeve cannot be placed on the lower surface of an upper die for casting in the low-pressure casting process of the existing aluminum alloy box parts, and provides a casting forming method of an aluminum casting with a built-in steel sleeve. Effectively meets the casting production requirement of the aluminum alloy box parts for automobiles.
The technical scheme of the invention is as follows:
a casting forming method for an aluminum casting with a built-in steel sleeve comprises the steps of placing a heated steel sleeve on a steel sleeve positioning sleeve, and then placing the steel sleeve positioning sleeve on a lower die positioning table of a casting die for positioning. And then the upper die of the casting die falls down to be matched with the die, and the split cone penetrates into the center hole of the steel sleeve to be matched with the steel sleeve. And after the die is closed, the upper die is lifted to open the die, and the steel sleeve is sleeved outside the split cone and lifted upwards along with the split cone, so that the steel sleeve is positioned on the lower surface of the upper die. And taking the steel sleeve positioning sleeve out of the lower die positioning table, and then, dropping the upper die and closing the side die again. The aluminum liquid enters from the sprue bush and enters the mold cavity for filling through a gap between the steel bush and the lower mold. After the stages of filling, pressure maintaining and pressure releasing, the casting of the box parts is completed. And (3) opening the side die, lifting the upper die again to open the die, taking the casting of the box body part out by the upper die, ejecting the casting by the ejector rod, and completing the casting forming process of the box body part with the built-in steel sleeve and the aluminum alloy.
And transferring the casting into a subsequent process, and finally processing the casting into a finished product of the aluminum alloy box body part with the built-in steel sleeve through the processes of heat treatment, shot blasting, machining and the like.
The casting die mainly comprises a lower die plate, a lower die, a sprue bush, a steel bush positioning bush, a steel bush, a split cone, an upper die, a push rod, an upper die plate, a side die and the like. 3-6 rectangular bosses are uniformly distributed around the sprue bush of the lower die. The steel sleeve positioning sleeve is of an annular step structure, 3-6U-shaped through grooves along the axial direction are uniformly distributed on the outer wall, and 3-6 rectangular bosses are uniformly distributed on the upper end face. The steel sleeve is also of an annular step structure, the outer wall of the steel sleeve is provided with U-shaped annular grooves, and 3-6U-shaped through grooves along the axial direction are uniformly distributed.
The U-shaped through groove of the steel sleeve positioning sleeve is matched with the rectangular boss of the lower die, so that the steel sleeve positioning sleeve is positioned on the lower die.
The U-shaped through groove of the steel sleeve is matched with the rectangular boss of the steel sleeve positioning sleeve, so that the steel sleeve is positioned on the steel sleeve positioning sleeve. And the steel sleeve is positioned on the lower die through the steel sleeve positioning sleeve.
The fit clearance between the steel sleeve and the shunt cone is 0.05-0.20mm.
The heating temperature range of the steel sleeve is 300-400 ℃.
Compared with the prior art, the invention has the following advantages: the invention solves the problem that the current aluminum alloy box parts cannot be cast by placing the steel sleeve on the lower surface of the upper die, and the casting forming method adopted by the invention has the advantages of accurate positioning of the steel sleeve and small influence on casting production efficiency. Meanwhile, the casting forming method adopted by the invention does not need to modify the existing casting equipment, and has simple and feasible structure and small investment.
Drawings
FIG. 1 is a schematic illustration of a casting process and mold of the present invention;
FIG. 2 is a schematic illustration of the positioning and placement of a steel jacket positioning sleeve and a steel jacket of a casting mold according to the present invention;
FIG. 3 is a schematic view of the positioning and placement of a steel jacket after the steel jacket positioning jacket is removed from the casting mold of the present invention;
FIG. 4 is a schematic illustration of a casting of an aluminum alloy box-like part with built-in steel jacket using the forming method of the present invention.
In the figure: 1. lower bolster, 2, lower mould, 3, side forms, 4, upper mould, 5, ejector pin, 6, upper bolster, 7, steel bushing, 8, runner cover, 9, reposition of redundant personnel awl, 10, foundry goods, 11, steel bushing locating sleeve.
Detailed Description
The following detailed description of the embodiments refers to the accompanying drawings.
Fig. 1 is a schematic diagram of the casting process and the mold thereof according to the present invention. The casting mould shown in figures 1 and 2 mainly comprises a lower die plate 1, a lower die 2, a side die 3, an upper die 4, a push rod 5, an upper die plate 6, a steel sleeve 7, a sprue bush 8, a flow dividing cone 9 and a steel sleeve positioning sleeve 11. Wherein 3-6 rectangular bosses are uniformly distributed around the sprue bush 8 of the lower die 2; the steel sleeve positioning sleeve 11 is of an annular step structure, 3-6U-shaped through grooves along the axial direction are uniformly distributed on the outer wall, and 3-6 rectangular bosses are uniformly distributed on the upper end face; the steel sleeve 7 is also of an annular step structure, the outer wall of the steel sleeve is provided with U-shaped annular grooves, and 3-6U-shaped through grooves along the axial direction are uniformly distributed. The U-shaped through groove of the steel sleeve positioning sleeve 11 is matched with the rectangular boss of the lower die 2, so that the positioning of the steel sleeve positioning sleeve 11 on the lower die 2 is realized. The U-shaped through groove of the steel sleeve 7 is matched with the rectangular boss of the steel sleeve positioning sleeve 11, so that the steel sleeve 7 is positioned on the steel sleeve positioning sleeve 11. The steel sleeve 7 is positioned on the lower die 2 through the steel sleeve positioning sleeve 11.
In the forming process shown in fig. 2, a steel sleeve 7 heated to 300-400 ℃ is placed on a steel sleeve positioning sleeve 11, and then the steel sleeve positioning sleeve 11 is placed on a positioning table of a lower die 2 of a casting die for positioning. Then the upper die 4 of the casting die is dropped down to be matched, the diverter cone 9 penetrates into the center hole of the steel sleeve 7 to be matched with the steel sleeve 7, and the fit clearance between the steel sleeve 7 and the diverter cone 9 is 0.05-0.20mm. Immediately after the die assembly, the upper die 4 is lifted to open the die, and the steel sleeve 7 is sleeved outside the split cone 9 and lifted upwards along with the split cone 9 so as to be positioned on the lower surface of the upper die 4.
As shown in fig. 3, the steel sleeve positioning sleeve 11 is taken out from the positioning table of the lower die 2, and the preparation process of the casting forming process is completed.
In the forming process shown in fig. 1, the upper die 4 falls down again to be clamped, the side die 3 is clamped, molten aluminum enters from the sprue bush 8, and enters the die cavity for filling through a gap between the steel bush 7 and the lower die 2. After the stages of filling, pressure maintaining and pressure releasing, the casting of the box parts is completed. And opening the side die 3, lifting the upper die 4 again to open the die, taking the casting 10 of the box body part out by the upper die 4, ejecting the casting 10 by the ejector rod 5, and completing the casting forming process of the box body part with the built-in steel sleeve and the aluminum alloy.
The casting 10 is transferred to the subsequent working procedures, and finally processed into the finished product of the aluminum alloy box body part with the built-in steel sleeve through the working procedures of heat treatment, shot blasting, machining and the like.
The technical content that is not described in detail in this embodiment is prior art.
Claims (1)
1. The casting mold mainly comprises a lower template, a lower mold, a sprue bush, a steel bush positioning bush, a steel bush, a split cone, an upper mold, a push rod, an upper template and a side mold, and is characterized in that: 3-6 rectangular bosses are uniformly distributed around the sprue bush of the lower die; 3-6U-shaped through grooves along the axial direction are uniformly distributed on the outer wall of the steel sleeve positioning sleeve, and 3-6 rectangular bosses are uniformly distributed on the upper end surface; 3-6U-shaped through grooves along the axial direction are uniformly distributed on the outer wall of the steel sleeve; the U-shaped through groove of the steel sleeve positioning sleeve is matched with the rectangular boss of the lower die, and the U-shaped through groove of the steel sleeve is matched with the rectangular boss of the steel sleeve positioning sleeve; placing the heated steel sleeve on a steel sleeve positioning sleeve, and then placing the steel sleeve positioning sleeve on a lower die positioning table of a casting die for positioning; then the upper die of the casting die falls down to be matched with the die, and the split cone penetrates into the center hole of the steel sleeve to be matched with the steel sleeve; immediately lifting the upper die to open the die after die assembly, sleeving the steel sleeve outside the split-flow cone, and lifting the steel sleeve upwards along with the split-flow cone so as to be positioned on the lower surface of the upper die; taking out the steel sleeve positioning sleeve from the lower die positioning table, and then falling down the upper die again for die assembly, and die assembly of the side die; the aluminum liquid enters from the sprue bush, enters into the die cavity for filling through a gap between the steel bush and the lower die, and the aluminum casting with the built-in steel bush is cast and formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910133755.1A CN109732061B (en) | 2019-02-22 | 2019-02-22 | Casting forming method for aluminum casting with built-in steel sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910133755.1A CN109732061B (en) | 2019-02-22 | 2019-02-22 | Casting forming method for aluminum casting with built-in steel sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN109732061A CN109732061A (en) | 2019-05-10 |
| CN109732061B true CN109732061B (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910133755.1A Active CN109732061B (en) | 2019-02-22 | 2019-02-22 | Casting forming method for aluminum casting with built-in steel sleeve |
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| CN112828265B (en) * | 2021-02-10 | 2025-08-05 | 苏州金瑞阳模具有限公司 | A water-cooling mold for casting an aluminum alloy motor housing |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0732126A (en) * | 1993-07-23 | 1995-02-03 | Toyota Motor Corp | Cylinder block casting method |
| JP2007260687A (en) * | 2006-03-27 | 2007-10-11 | Toyota Motor Corp | Cylinder block semi-melt molding method and semi-melt molding apparatus |
| CN202212564U (en) * | 2011-07-30 | 2012-05-09 | 宁波合力模具科技股份有限公司 | Device for positioning upper die annular insert during casting |
| KR20120127081A (en) * | 2011-05-13 | 2012-11-21 | 하상훈 | apparatus and method for manufacturing induction cooking utensils |
| CN203778738U (en) * | 2014-03-17 | 2014-08-20 | 重庆高金实业有限公司 | Engine cylinder body mold |
| CN105057636A (en) * | 2015-07-30 | 2015-11-18 | 惠州市威盛工业有限公司 | Steel bushing inlay casting method for motor casing front and rear end covers and front and rear end covers |
| CN206536017U (en) * | 2017-01-25 | 2017-10-03 | 惠州市威盛工业有限公司 | A kind of casting integrated shaping bearing steel bushing positioner of New energy automobile motor support |
| CN209849862U (en) * | 2019-02-22 | 2019-12-27 | 秦皇岛中秦渤海轮毂有限公司 | Mould positioning structure of built-in steel bushing aluminum casting |
-
2019
- 2019-02-22 CN CN201910133755.1A patent/CN109732061B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0732126A (en) * | 1993-07-23 | 1995-02-03 | Toyota Motor Corp | Cylinder block casting method |
| JP2007260687A (en) * | 2006-03-27 | 2007-10-11 | Toyota Motor Corp | Cylinder block semi-melt molding method and semi-melt molding apparatus |
| KR20120127081A (en) * | 2011-05-13 | 2012-11-21 | 하상훈 | apparatus and method for manufacturing induction cooking utensils |
| CN202212564U (en) * | 2011-07-30 | 2012-05-09 | 宁波合力模具科技股份有限公司 | Device for positioning upper die annular insert during casting |
| CN203778738U (en) * | 2014-03-17 | 2014-08-20 | 重庆高金实业有限公司 | Engine cylinder body mold |
| CN105057636A (en) * | 2015-07-30 | 2015-11-18 | 惠州市威盛工业有限公司 | Steel bushing inlay casting method for motor casing front and rear end covers and front and rear end covers |
| CN206536017U (en) * | 2017-01-25 | 2017-10-03 | 惠州市威盛工业有限公司 | A kind of casting integrated shaping bearing steel bushing positioner of New energy automobile motor support |
| CN209849862U (en) * | 2019-02-22 | 2019-12-27 | 秦皇岛中秦渤海轮毂有限公司 | Mould positioning structure of built-in steel bushing aluminum casting |
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| CN109732061A (en) | 2019-05-10 |
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