EP3492194A1 - Water-cooled mold for casting aluminum alloy wheel - Google Patents

Water-cooled mold for casting aluminum alloy wheel Download PDF

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Publication number
EP3492194A1
EP3492194A1 EP18206074.9A EP18206074A EP3492194A1 EP 3492194 A1 EP3492194 A1 EP 3492194A1 EP 18206074 A EP18206074 A EP 18206074A EP 3492194 A1 EP3492194 A1 EP 3492194A1
Authority
EP
European Patent Office
Prior art keywords
side mold
mold
insert
mold insert
water
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.)
Withdrawn
Application number
EP18206074.9A
Other languages
German (de)
English (en)
French (fr)
Inventor
Zhen Li
Lin Zhu
Yule Zhou
Peng Zhou
Shan MA
Changhai Li
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CITIC Dicastal Co Ltd
Original Assignee
CITIC Dicastal Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CITIC Dicastal Co Ltd filed Critical CITIC Dicastal Co Ltd
Publication of EP3492194A1 publication Critical patent/EP3492194A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/055—Cooling the moulds

Definitions

  • the present invention relates to a low-pressure casting mold for an aluminum wheel, specifically to a water-cooled side mold and a water-cooled bottom mold for improving the shrinkage porosity at spoke roots.
  • spoke roots are very obvious hot spots where the shrinkage porosity and cavity defect easily occurs. Therefore, whether the mold design and the artificially added cooling are reasonable will greatly affect the shrinkage porosity at the spoke roots, especially the shrinkage porosity of the spoke roots produced fast is a non-negligible defect.
  • the present common design cannot thoroughly and effectively solve the shrinkage porosity at the spoke roots, which brings great difficulty to speeding up the production.
  • Fig. 1 shows the present common cooling design of spoke roots
  • the side mold insert provided with a water channel 1 is made of ordinary mold steel, which causes low thermal conductivity and slow cooling of the spoke roots.
  • a cooling water channel 2 is arranged in the bottom mold to assist in cooling the spoke roots, the cooling water channel 2 often affects the feeding of spokes to the spoke roots; thus arranging cooling water channel in the bottom mold brings more adverse effects.
  • the shrinkage porosity at the spoke roots can be fed by prolonging the production cycle, adding insulation to the spokes and other measures at the expense of production efficiency.
  • the object of the present invention is to provide a novel water-cooled mold for casting an aluminum alloy wheel, thereby overcoming the above problems.
  • a water-cooled mold for casting an aluminum alloy wheel.
  • the water-cooled mold is composed of a top mold, a side mold and a bottom mold, and is characterized in that: a side mold insert is included between the side mold and the bottom mold, the inner surface of the side mold insert faces a cavity, and the upper surface and the lower surface are matched with the side mold frame respectively; the side mold insert is made of copper; the matching surface between the side mold insert and the side mold has a contact matching surface having a length of 10-15 mm at the edges of the inner ring and the outer ring respectively, and a gap of 0.05-0.20 mm is formed between the side mold insert and the side mold between the contact matching surfaces.
  • the matching surface between the side mold insert and the side mold has a contact matching surface having a length of 12 mm at the edges of the inner ring and the outer ring respectively, and a gap of 0.10 mm is formed between the side mold insert and the side mold between the contact matching surfaces.
  • a cooling water channel of the bottom mold is located on the outer side of the bottom mold.
  • the advantage of the technical solution in the present invention is that by the above measures, the cooling on spoke roots is effectively improved and the influence of the cooling water channel on spokes is limited.
  • 1-side mold insert 2-bottom mold cooling water channel, A-upper surface of the side mold insert, B-lower surface of the side mold insert.
  • a water-cooled mold for casting an aluminum alloy wheel is composed of a top mold, a side mold and a bottom mold, and is characterized in that: a side mold insert is included between the side mold and the bottom mold, the inner surface of the side mold insert faces a cavity, the upper surface is matched with the lower surface of the side mold, and the lower surface is matched with the upper surface of the bottom mold; the side mold insert is made of copper; the matching surface between the side mold insert and the side mold has a contact matching surface having a length L1 at the edges of the inner ring and the outer ring respectively, and a gap L2 is formed between the side mold insert and the side mold between the contact matching surfaces.
  • Table 1 Parameters of each group of test device in this embodiment Group No. L1/mm L2/mm Test group 1 10 0.05 Test group 2 12 0.10 Test group 3 15 0.20 Control group 1
  • the side mold insert is made of mold steel and the entire matching surface is fully fitted
  • Control group 2 The side mold insert is made of red copper and the entire matching surface is fully fitted.
  • test results of the five test groups are measured by hub failure caused by the shrinkage porosity defect at spoke roots.
  • the results show that the test group 2 has the best hub production quality, and the unqualified hubs caused by the shrinkage porosity defect at the spoke roots include 12 cases in test group 2, 37 cases in test group 1, 42 cases in test group 3, 81 cases in control group 1 and 54 cases in control group 2.
  • the mold of test group 2 reduces the ratio of the unqualified hubs caused by the shrinkage porosity defect at the spoke roots.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
EP18206074.9A 2017-11-30 2018-11-13 Water-cooled mold for casting aluminum alloy wheel Withdrawn EP3492194A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711235657.6A CN107876731B (zh) 2017-11-30 2017-11-30 一种用于铸造铝合金车轮的水冷模具

Publications (1)

Publication Number Publication Date
EP3492194A1 true EP3492194A1 (en) 2019-06-05

Family

ID=61776011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18206074.9A Withdrawn EP3492194A1 (en) 2017-11-30 2018-11-13 Water-cooled mold for casting aluminum alloy wheel

Country Status (3)

Country Link
US (1) US20190160523A1 (zh)
EP (1) EP3492194A1 (zh)
CN (1) CN107876731B (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204209101U (zh) * 2014-09-15 2015-03-18 中信戴卡股份有限公司 铝车轮低压铸造模具
CN106077575A (zh) * 2016-09-22 2016-11-09 中信戴卡股份有限公司 一种铝合金车轮低压铸造模具
CN205702388U (zh) * 2016-09-22 2016-11-23 中信戴卡股份有限公司 一种铝合金车轮低压铸造模具

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3247129A1 (de) * 1982-12-20 1984-06-20 Institut po Metalosnanie i Technologia na Metalite, Sofija Giessform
GB2253171B (en) * 1991-02-27 1994-08-24 Honda Motor Co Ltd Method of casting vehicle wheel
JP3210454B2 (ja) * 1992-11-20 2001-09-17 旭テック株式会社 車両用ホイールの鋳造装置
JP3159366B2 (ja) * 1996-03-27 2001-04-23 日立金属株式会社 低圧鋳造用金型
JPH11226716A (ja) * 1998-02-10 1999-08-24 Nissan Motor Co Ltd 鋳造用金型
US6463994B1 (en) * 1998-12-28 2002-10-15 Hayes Lemmerz International, Inc. Apparatus and method for gravity casting a motorcycle wheel
US6986380B1 (en) * 2004-07-30 2006-01-17 Hayes Lemmerz International, Inc. Vehicle wheel mold having a screenless gate
CN205732919U (zh) * 2016-07-08 2016-11-30 中信戴卡股份有限公司 改进的低压铸造水冷边模
CN106041023A (zh) * 2016-07-08 2016-10-26 中信戴卡股份有限公司 一种改进的低压铸造水冷边模
CN106825502B (zh) * 2017-03-03 2019-08-13 佛山市南海奔达模具有限公司 一种分段冷却工艺结构轮毂模具
CN206536008U (zh) * 2017-03-19 2017-10-03 中信戴卡股份有限公司 改进的低压铸造车轮模具边模
CN207431225U (zh) * 2017-11-30 2018-06-01 中信戴卡股份有限公司 一种用于铸造铝合金车轮的水冷模具

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204209101U (zh) * 2014-09-15 2015-03-18 中信戴卡股份有限公司 铝车轮低压铸造模具
CN106077575A (zh) * 2016-09-22 2016-11-09 中信戴卡股份有限公司 一种铝合金车轮低压铸造模具
CN205702388U (zh) * 2016-09-22 2016-11-23 中信戴卡股份有限公司 一种铝合金车轮低压铸造模具

Also Published As

Publication number Publication date
CN107876731A (zh) 2018-04-06
US20190160523A1 (en) 2019-05-30
CN107876731B (zh) 2024-01-30

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