US20180264541A1 - Cooling device for side mold of cast wheel mold - Google Patents
Cooling device for side mold of cast wheel mold Download PDFInfo
- Publication number
- US20180264541A1 US20180264541A1 US15/609,410 US201715609410A US2018264541A1 US 20180264541 A1 US20180264541 A1 US 20180264541A1 US 201715609410 A US201715609410 A US 201715609410A US 2018264541 A1 US2018264541 A1 US 2018264541A1
- Authority
- US
- United States
- Prior art keywords
- air
- air pipe
- mold
- side mold
- cooling device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/065—Cooling or heating equipment for moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/28—Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
Definitions
- the disclosure relates to the casting field, and specifically to a cooling device for a cast aluminum wheel mold.
- relatively low degree of supercooling may result in thick and large internal grains and shrunk and loose tissues at the outer rim of the wheel, so that the mechanical properties of the wheel are directly influenced, a failure phenomenon appears in reliability tests, and the safety performance of the wheel is influenced.
- a side mold cooling device for a wheel mold is provided, which may capable of, among other things, overcoming the defects of loosening and shrinkage easily occurring at thick and large hot spots and improving the molding quality of a wheel.
- an improved cooling device for a side mold of a cast wheel mold includes an air pipe system and red copper. Air holes are provided at the positions in the back cavity of a side mold corresponding to spokes, and the red copper is casted in the air holes. A groove body corresponding to a window is provided in the back cavity of the side mold, and the groove body is made according to the shape of a rim.
- the air pipe cooling system includes an air pipe connector, a main air pipe, air claws and air outlets.
- the main air pipe is annular and concentric with the outer diameter of a wheel, and two ends of the main air pipe are sealed by plug welding.
- the air pipe connector is welded on the outer side of the main air pipe, and the air pipe connector is connected with a compressed air storage device; the air claws are welded on the inner side of the main air pipe, correspond to hot spots of the wheel and are as many as the air holes.
- the air outlets are distributed uniformly at a position corresponding to the window on the main air pipe, and the air direction is ensured to be perpendicular to the molded surface of the groove body.
- the roots of the air holes are spaced 8-10 mm from a cavity surface to ensure the strength of the mold.
- the quantity of the air holes is 1 to 3.
- the thickness of the red copper casted in the air holes is 5-8 mm.
- the root of the groove body is spaced 8-10 mm from the cavity surface.
- the air pipe system is fixed in the back cavity of the side mold by welding or bolt connection, and shall be installed firmly.
- compressed air enters the main air pipe via the connector, and a part of the compressed air is directly blown to the hot spots of the spokes along the air claws and quickly takes the heat of the mold away via the red copper, thus ensuring quick cooling of the hot spots; the other part of the compressed air is directly blown to the rim of the window via the air outlets, so that the degree of supercooling is improved, grains are thinned, and excellent mechanical properties of the rim are ensured; and in a pressure casting cycle, the cooling generally starts from 30-50 seconds after liquid is heated and ends till the liquid is completely solidified at the hot spots, and this process is circulated, thus ensuring stable and continuous production of wheel castings.
- the disclosure ensures effective cooling of hot spots, gives consideration to crystal forming at the outer rim, strengthens the heat dissipation capability of the mold, quickly takes concentrated heat, improves the solidification speed of molten aluminum, eliminates loosening and shrinkage of hot spots, simultaneously improves the degree of supercooling, thins grain structures, improves the mechanical properties of the outer rim of the wheel, obviously shortens the casting production cycle, improves the production efficiency and reduces the production cost.
- FIG. 1 is a schematic assembly diagram of an improved side mold cooling device for a cast wheel mold in the disclosure.
- FIG. 2 is a schematic arrangement diagram of an air pipe system of the improved side mold cooling device for a cast wheel mold in the disclosure.
- FIGS. 1 and 2 disclose an improved side mold cooling device for a cast wheel mold.
- Air holes 31 are provided at the positions in the back cavity of a side mold 3 corresponding to spokes, and the roots of the air holes 31 are spaced 8-10 mm from a cavity surface to ensure the strength of the mold; the quantity of the air holes 31 is 1 to 3; red copper 5 is casted with a thickness of 5-8 mm in the air holes 31 to accelerate heat dissipation of the mold.
- a groove body 32 corresponding to a window is provided in the back cavity of the side mold 3 , the groove body 32 is designed according to the shape of the window, and the root of the groove body 32 is spaced 8-10 mm from the cavity surface.
- An air pipe cooling system 4 includes an air pipe connector 41 , a main air pipe 42 , air claws 43 and air outlets 44 ;
- the main air pipe 42 is annular and concentric with the outer diameter of a wheel, and two ends of the main air pipe 42 are sealed by plug welding.
- the air pipe connector 41 is welded on the outer side of the main air pipe 42 , and the air pipe connector 41 is connected with a compressed air storage device;
- the air claws 43 are welded on the inner side of the main air pipe 42 , correspond to hot spots of the spokes and are as many as the air holes 31 in the back cavity of the side mold.
- the ends of the air claws 43 are spaced 5 mm from the end face of the red copper 5 ; the position on the main air pipe 42 corresponding to the groove body 32 is provided with the air outlets 44 , diameters of which are 2-4 mm and intervals of which are 20-30 mm, and the air direction is ensured to be perpendicular to the molded surface of the cavity, thus cooling the rim.
- the air pipe system 4 is fixed in the back cavity of the side mold 3 by welding or bolt connection, and shall be installed firmly.
- compressed air enters the main air pipe via the connector, and a part of the compressed air is directly blown to the hot spots of the spokes along the air claws and quickly takes the heat of the mold away via the red copper, thus ensuring quick cooling of the hot spots; the other part of the compressed air is directly blown to the rim of the window via the air outlets, so that the degree of supercooling is improved, internal grains are thinned, and excellent mechanical properties of the rim are ensured; and in a pressure casting cycle, the cooling generally starts from 30-50 seconds after liquid is heated and ends till the liquid is completely solidified at the hot spots, and this process is circulated, thus ensuring stable and continuous production of wheel castings.
Abstract
Description
- This application is filed based upon and claims priority to Chinese Patent Application No. 201710163272.7, filed on Mar. 19, 2017, the entire contents of which are incorporated herein by reference.
- The disclosure relates to the casting field, and specifically to a cooling device for a cast aluminum wheel mold.
- At the present stage, about 80% of aluminum alloy wheels are produced by adopting a low-pressure cast molding process. As for a wheel, the junctions of the spokes and the rim are thick and large, belong to obvious casting hot spots, and are the difficulty in present production. A large number of production practices show that common defects occurred at the hot spots are loosening and shrinkage, because heat is too concentrated therein, causing slow solidification of molten aluminum, whereas at the spoke part having a thin wall, the molten aluminum is quickly crystallized and easily early solidified to block a molten aluminum flow channel, thereby hindering effective feeding on the thick and large hot spots and finally leading to molding defects.
- Moreover, relatively low degree of supercooling may result in thick and large internal grains and shrunk and loose tissues at the outer rim of the wheel, so that the mechanical properties of the wheel are directly influenced, a failure phenomenon appears in reliability tests, and the safety performance of the wheel is influenced.
- A side mold cooling device for a wheel mold is provided, which may capable of, among other things, overcoming the defects of loosening and shrinkage easily occurring at thick and large hot spots and improving the molding quality of a wheel.
- In one embodiment of the disclosure, an improved cooling device for a side mold of a cast wheel mold includes an air pipe system and red copper. Air holes are provided at the positions in the back cavity of a side mold corresponding to spokes, and the red copper is casted in the air holes. A groove body corresponding to a window is provided in the back cavity of the side mold, and the groove body is made according to the shape of a rim.
- The air pipe cooling system includes an air pipe connector, a main air pipe, air claws and air outlets. The main air pipe is annular and concentric with the outer diameter of a wheel, and two ends of the main air pipe are sealed by plug welding. The air pipe connector is welded on the outer side of the main air pipe, and the air pipe connector is connected with a compressed air storage device; the air claws are welded on the inner side of the main air pipe, correspond to hot spots of the wheel and are as many as the air holes. The air outlets are distributed uniformly at a position corresponding to the window on the main air pipe, and the air direction is ensured to be perpendicular to the molded surface of the groove body.
- The roots of the air holes are spaced 8-10 mm from a cavity surface to ensure the strength of the mold. The quantity of the air holes is 1 to 3.
- The thickness of the red copper casted in the air holes is 5-8 mm. The root of the groove body is spaced 8-10 mm from the cavity surface.
- The air pipe system is fixed in the back cavity of the side mold by welding or bolt connection, and shall be installed firmly. When cooling starts, compressed air enters the main air pipe via the connector, and a part of the compressed air is directly blown to the hot spots of the spokes along the air claws and quickly takes the heat of the mold away via the red copper, thus ensuring quick cooling of the hot spots; the other part of the compressed air is directly blown to the rim of the window via the air outlets, so that the degree of supercooling is improved, grains are thinned, and excellent mechanical properties of the rim are ensured; and in a pressure casting cycle, the cooling generally starts from 30-50 seconds after liquid is heated and ends till the liquid is completely solidified at the hot spots, and this process is circulated, thus ensuring stable and continuous production of wheel castings.
- The disclosure ensures effective cooling of hot spots, gives consideration to crystal forming at the outer rim, strengthens the heat dissipation capability of the mold, quickly takes concentrated heat, improves the solidification speed of molten aluminum, eliminates loosening and shrinkage of hot spots, simultaneously improves the degree of supercooling, thins grain structures, improves the mechanical properties of the outer rim of the wheel, obviously shortens the casting production cycle, improves the production efficiency and reduces the production cost.
-
FIG. 1 is a schematic assembly diagram of an improved side mold cooling device for a cast wheel mold in the disclosure. -
FIG. 2 is a schematic arrangement diagram of an air pipe system of the improved side mold cooling device for a cast wheel mold in the disclosure. - In the figure, 1-bottom mold, 2-top mold, 3-side mold, 31-air hole, 32-groove body, 4-air pipe system, 41-air pipe connector, 42-main air pipe, 43-air claw, 44-air outlet, 5-red copper.
-
FIGS. 1 and 2 disclose an improved side mold cooling device for a cast wheel mold. -
Air holes 31 are provided at the positions in the back cavity of a side mold 3 corresponding to spokes, and the roots of theair holes 31 are spaced 8-10 mm from a cavity surface to ensure the strength of the mold; the quantity of theair holes 31 is 1 to 3;red copper 5 is casted with a thickness of 5-8 mm in theair holes 31 to accelerate heat dissipation of the mold. Agroove body 32 corresponding to a window is provided in the back cavity of the side mold 3, thegroove body 32 is designed according to the shape of the window, and the root of thegroove body 32 is spaced 8-10 mm from the cavity surface. - An air
pipe cooling system 4 includes anair pipe connector 41, amain air pipe 42,air claws 43 andair outlets 44; themain air pipe 42 is annular and concentric with the outer diameter of a wheel, and two ends of themain air pipe 42 are sealed by plug welding. Theair pipe connector 41 is welded on the outer side of themain air pipe 42, and theair pipe connector 41 is connected with a compressed air storage device; theair claws 43 are welded on the inner side of themain air pipe 42, correspond to hot spots of the spokes and are as many as theair holes 31 in the back cavity of the side mold. - The ends of the
air claws 43 are spaced 5 mm from the end face of thered copper 5; the position on themain air pipe 42 corresponding to thegroove body 32 is provided with theair outlets 44, diameters of which are 2-4 mm and intervals of which are 20-30 mm, and the air direction is ensured to be perpendicular to the molded surface of the cavity, thus cooling the rim. - The
air pipe system 4 is fixed in the back cavity of the side mold 3 by welding or bolt connection, and shall be installed firmly. When cooling starts, compressed air enters the main air pipe via the connector, and a part of the compressed air is directly blown to the hot spots of the spokes along the air claws and quickly takes the heat of the mold away via the red copper, thus ensuring quick cooling of the hot spots; the other part of the compressed air is directly blown to the rim of the window via the air outlets, so that the degree of supercooling is improved, internal grains are thinned, and excellent mechanical properties of the rim are ensured; and in a pressure casting cycle, the cooling generally starts from 30-50 seconds after liquid is heated and ends till the liquid is completely solidified at the hot spots, and this process is circulated, thus ensuring stable and continuous production of wheel castings.
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710163272.7 | 2017-03-19 | ||
CN201710163272.7A CN106694854A (en) | 2017-03-19 | 2017-03-19 | Improved cast vehicle wheel mold side form cooling device |
Publications (1)
Publication Number | Publication Date |
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US20180264541A1 true US20180264541A1 (en) | 2018-09-20 |
Family
ID=58886875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/609,410 Abandoned US20180264541A1 (en) | 2017-03-19 | 2017-05-31 | Cooling device for side mold of cast wheel mold |
Country Status (2)
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US (1) | US20180264541A1 (en) |
CN (1) | CN106694854A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10549339B2 (en) * | 2018-03-30 | 2020-02-04 | Citic Dicastal Co., Ltd | Low-pressure casting mold for aluminum wheel |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202506827U (en) * | 2012-03-26 | 2012-10-31 | 中信戴卡股份有限公司 | Improved air cooling system of wheel die |
CN103736971A (en) * | 2013-12-05 | 2014-04-23 | 江苏凯特汽车部件有限公司 | R-angle casting defect treatment device of aluminum hub with rim width larger than 11 mm |
WO2016039484A1 (en) * | 2014-09-12 | 2016-03-17 | 日立金属株式会社 | Light alloy wheel, method for manufacturing same, and device for manufacturing same |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003290903A (en) * | 2002-04-04 | 2003-10-14 | Hitachi Metals Ltd | Metallic mold for casting light alloy wheel with low pressure and method for producing light alloy wheel |
CN102601341B (en) * | 2012-03-26 | 2013-07-31 | 中信戴卡股份有限公司 | Improved air cooling system of wheel mould |
CN203281820U (en) * | 2013-05-28 | 2013-11-13 | 江苏东方龙机车集团有限公司 | Hub casting mold able to optimize cooling effect |
CN206009789U (en) * | 2016-09-29 | 2017-03-15 | 中信戴卡股份有限公司 | A kind of side formwork of wheel casting die |
CN206536007U (en) * | 2017-03-19 | 2017-10-03 | 中信戴卡股份有限公司 | Improved casting wheel mold side mould cooling apparatus |
-
2017
- 2017-03-19 CN CN201710163272.7A patent/CN106694854A/en active Pending
- 2017-05-31 US US15/609,410 patent/US20180264541A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202506827U (en) * | 2012-03-26 | 2012-10-31 | 中信戴卡股份有限公司 | Improved air cooling system of wheel die |
CN103736971A (en) * | 2013-12-05 | 2014-04-23 | 江苏凯特汽车部件有限公司 | R-angle casting defect treatment device of aluminum hub with rim width larger than 11 mm |
WO2016039484A1 (en) * | 2014-09-12 | 2016-03-17 | 日立金属株式会社 | Light alloy wheel, method for manufacturing same, and device for manufacturing same |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10549339B2 (en) * | 2018-03-30 | 2020-02-04 | Citic Dicastal Co., Ltd | Low-pressure casting mold for aluminum wheel |
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Publication number | Publication date |
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CN106694854A (en) | 2017-05-24 |
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Owner name: CITIC DICASTAL CO.,LTD., CHINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WANG, KAIQING;LI, CHANGHAI;ZHAO, YONGWANG;REEL/FRAME:043132/0251 Effective date: 20170504 |
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