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KR20110102661A - Die casting device and die casting method - Google Patents

Die casting device and die casting method Download PDF

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Publication number
KR20110102661A
KR20110102661A KR1020100021788A KR20100021788A KR20110102661A KR 20110102661 A KR20110102661 A KR 20110102661A KR 1020100021788 A KR1020100021788 A KR 1020100021788A KR 20100021788 A KR20100021788 A KR 20100021788A KR 20110102661 A KR20110102661 A KR 20110102661A
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KR
South Korea
Prior art keywords
molten metal
metal material
sleeve
mold
flanger
Prior art date
Application number
KR1020100021788A
Other languages
Korean (ko)
Other versions
KR101212328B1 (en
Inventor
이영철
Original Assignee
주식회사 퓨쳐캐스트
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Priority to KR1020100021788A priority Critical patent/KR101212328B1/en
Publication of KR20110102661A publication Critical patent/KR20110102661A/en
Application granted granted Critical
Publication of KR101212328B1 publication Critical patent/KR101212328B1/en

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    • B01F13/08—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/02—Hot chamber machines, i.e. with heated press chamber in which metal is melted
    • B22D17/04—Plunger machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/30—Accessories for supplying molten metal, e.g. in rations
    • 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
    • B22D27/02—Use of electric or magnetic effects

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)

Abstract

The present invention provides a molten metal tank for storing molten metal material, a mold for molding a product shape using the molten metal material, and a dosing tube extending from the molten metal tank for supplying molten metal material stored in the melting tank; A sleeve extending from the dosing tube to introduce the molten material supplied from the dosing tube into the mold, the sleeve having a first portion through which the molten metal material is transferred in a molten state, and the molten metal material in a reaction state A second portion to be transferred to; A first electromagnetic stirring part installed around the second part to electromagnetically stir the molten metal material in the reaction solid state; A flanger installed in the sleeve for vertically conveying the molten metal material into the mold; And a flanger driver for driving the flanger at a first speed when the flanger moves to the first portion, and driving the flanger at a second speed slower than the first speed when moving at the second portion. doing

Description

Die casting apparatus and die casting method {DIE CASTING DEVICE AND DIE CASTING METHOD}

The present invention relates to a die casting apparatus and a die casting method, and more particularly, to a die casting apparatus and a die casting method using a molten metal in a reaction state capable of producing a casting of good quality.

The type of manufacturing apparatus by the die casting casting method is classified into two types, a low temperature chamber die casting apparatus and a high temperature chamber die casting apparatus, according to a method of transferring molten metal dissolved by a melting tank to a mold.

In general, a low temperature chamber die casting method is manufactured by transferring molten metal dissolved by a dissolution tank to a plunger in a pressurized chamber in a form exposed to the atmosphere and injecting molten metal into a mold. The production of the product by the device of low temperature chamber die casting is exposed to the atmosphere, so that the molten metal is transferred to the pressurizing chamber. Due to this, it is difficult to manufacture high quality products.

To compensate for this disadvantage, a high temperature chamber diecasting method is applied. In the high temperature chamber die casting method, a molten metal pressurized by a decompression device is pressed into a mold through a nozzle without exposing the molten metal dissolved by a melting tank to the atmosphere. It is pressurized at and is supplied to the sleeve and pressed back into the mold cavity of the mold. This manufacturing method has an advantage that the bubble defect of the product is less than the product produced by the low temperature chamber die casting apparatus because the molten metal is not exposed to the atmosphere and pressed into the mold. As described above, the method for manufacturing a product by a high temperature chamber die casting apparatus is particularly effective when manufacturing a product of a material which is rapidly oxidized in the air such as magnesium because it can be hermetically cast without being exposed to the air.

The present invention is directed to providing a die casting apparatus and a die casting method for forming a casting of better quality in casting molten metal in a solid state.

In order to solve the above-mentioned problems, a die casting apparatus including a melting tank for storing a molten metal material and a mold for molding a casting using the molten metal material, which is an embodiment of the present invention, is melted stored in the melting tank A dosing tube extending from the dissolution tank to supply metal material; A sleeve extending from the dosing tube to introduce the molten material supplied from the dosing tube into the mold, the sleeve having a first portion through which the molten metal material is transferred in a molten state, and the molten metal material in a reaction state A dosing tube extending at a position 51-80% away from the mold with respect to the entire length of the sleeve; A first electromagnetic stirring part installed around the second part to electromagnetically stir the molten metal material in the reaction solid state; And a flanger installed in the sleeve to vertically convey the molten metal material into the fin.

 According to one embodiment of the present invention, the molten metal material may be one of aluminum, magnesium, aluminum magnesium alloy.

 According to an aspect of an embodiment of the present invention, the first electromagnetic stirring portion may be installed in at least one of the inside of the mold and around the sleeve.

 According to an aspect of an embodiment of the present invention, the die casting apparatus drives the flanger at a first speed when the flanger moves to the first portion, and when the die caster moves at the second portion, The apparatus may further include a flanger driver configured to drive the flanger at a second slow speed.

 According to an aspect of an embodiment of the present invention, the die casting apparatus further includes a second electromagnetic stirring portion of the dosing tube, installed before the sleeve after the dissolution tank, and configured to electromagnetically stir the returned molten metal material. can do.

Another embodiment of the present invention provides a die casting method comprising the steps of: providing a molten metal material to a dissolution tank; supplying the molten metal material to a dosing pipe using a decompression device; Introducing the molten metal material supplied from the dosing tube at a first speed into the first portion of the sleeve; Introducing a molten metal material introduced into the sleeve through a flanger into a second portion at a second speed, the second speed being slower than the first speed; Cooling the molten metal material to a solid state in the second portion; Electromagnetically stirring the molten metal material in the solidified state through a first electromagnetic stirring unit; And introducing a molten metal material of the electromagnetically stirred reaction solid state into a mold.

According to an aspect of another embodiment of the present invention, the molten metal material may be one of aluminum, magnesium, aluminum magnesium alloy.

According to an aspect of another embodiment of the present invention, the first electromagnetic stirring portion may be installed in at least one of the inside of the mold and around the sleeve.

According to an aspect of another embodiment of the present invention, the dosing tube may be extended with respect to the sleeve at a position 51-80% away from the mold with respect to the entire length of the sleeve.

According to one aspect of another embodiment of the present invention, the die casting method is provided to electromagnetically stir the molten metal material of the dosing pipe, which is installed before the sleeve after the dissolution tank and returned to the dissolution tank by a second electromagnetic stirring unit. It may further comprise a step.

According to one embodiment of the present invention having the above-described configuration, the molten metal is moved at a relatively high speed to suppress cooling of the molten metal in the first portion of the sleeve, and the electromagnetic portion for a longer time in the second portion of the sleeve. By moving the molten metal at a relatively slow speed in order to cause the stirring action to occur, the cast structure of the final casting (extract) can be made finer, thereby producing a casting of excellent strength.

In particular, in the case of magnesium, aluminum, or magnesium aluminum alloy, the productivity can be increased while reducing the defect rate.

In addition, according to one embodiment of the present invention, by installing the first electromagnetic stirring portion in the mold and around the sleeve, it is possible to improve the ease of installation of the die casting apparatus.

In addition, by installing the dosing pipe 51-80% away from the mold with respect to the overall length of the sleeve, it is possible to cause the electromagnetic stirring action for the molten metal material in the reaction state without a separate temperature control means.

In addition, according to an embodiment of the present invention, the dosing pipe is inclined with respect to the sleeve, and by installing a second electromagnetic stirring unit in the dosing pipe, it is possible to increase the efficiency of the molten metal material to return to the dissolution tank.

1 is an overall schematic view of a die casting apparatus according to an embodiment of the present invention.
2 is a flowchart for explaining a die casting method according to another embodiment of the present invention.
3A to 3E are schematic views of a die casting apparatus for specifically explaining a die casting method which is another embodiment of the present invention.

Hereinafter, a die casting apparatus and a die casting method according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3.

1 is an overall schematic diagram of a die casting apparatus according to an embodiment of the present invention. As shown in Figure 1, the die casting apparatus 100 according to an embodiment of the present invention, the dissolution tank 10, the mold 20, the dosing pipe 30, the sleeve (40, 45), the first electromagnetic stirring A part 51, 51 ', the 2nd electromagnetic stirring part 52, the flanger 60, and the flanger drive part 70 are included.

As shown, the molten metal material 11 is stored in the dissolution tank 10. The molten metal material may be one of aluminum, magnesium, and aluminum magnesium alloy.

The mold 20 includes an upper mold 21 and a lower mold 22. The space (hollow part) 23 formed by the upper mold 21 and the lower mold 22 is a space for forming a casting. In addition, a mold sleeve 45 may be inserted into a central portion of the lower mold 22, and a first electromagnetic stirring unit 51 may be inserted around the mold sleeve 45.

The dosing tube 30 is a component for guiding the molten metal material 11 supplied from the dissolution tank 10 to sleeves 40 and 45 described later. The dosing tube 30 may be extended with respect to the machine sleeve 40 at a position d1 51-80% away from the mold relative to the total length d2 of the machine sleeve 40. The upper limit of d1 is 80% because space for securing a flanger is required. When d1 is 50% or less, it is difficult to control the temperature of the molten metal in the sleeve, and there is a fear that the electromagnetic stirring action by the electromagnetic field is less. In this way, when the dosing pipe 30 is installed at a predetermined position from the machine sleeve, the molten metal material 11 is moved to the second portion 46 to be described later in the reaction state without any temperature control means. . In addition, the first electromagnetic agitator 51 'provided around the second portion 46 and the first electromagnetic agitator 51 inserted into the mold sufficiently prevent the abnormal metal (metal in a reactive state) from being electromagnetically sufficient. By stirring, the quality of the die casting product can be improved.

Sleeves 40 and 45 are components for introducing the molten metal material 11 supplied to the dosing tube 30 into the mold 20, and include a machine sleeve 40 and a mold sleeve 45. . And a first portion 41 through which the molten metal material 11 is conveyed in a molten state and a second portion 46 through which the molten metal material 11 is conveyed in a reaction state. In addition, another first electromagnetic stirring unit 51 ′ may be installed on the mold side of the mechanical sleeve 40.

The first electromagnetic stirring unit 51 is a component for electromagnetically stirring the molten metal material in the reaction state, for example, may constitute the first electromagnetic stirring unit 51 using a coil. As shown, the first electromagnetic stirring unit 51 may be installed around the second portion 46 of the sleeves 40 and 45. Here, the second part may be a part in which the first electromagnetic stirring unit 51 ′ is installed.

The second electromagnetic stirring unit 52 is a component for electromagnetically stirring the returned molten metal material when the molten metal material in the reaction state is returned to the dissolution tank 10. As shown, the second electromagnetic stirring unit 52 may be installed after the mechanical sleeve 40 before the dissolution tank 10 of the dosing pipe 30.

The flanger 60 may be installed in the machine sleeve 40 to vertically transport the molten metal material 11 of the sleeves 40, 45 to the mold 20. As shown, it is a component for press-ining the molten metal material 11 introduced into the sleeves 40 and 45 into a mold.

The flanger driving part 70 drives the flanger 60 at a first speed when the flanger 60 moves in the first portion 41, and when the flanger 60 moves in the second portion 46. The flanger 60 is driven at a second speed slower than one speed. By this flanger drive part 70, electromagnetic stirring action | generates for a long time with respect to the molten metal of a reaction solid state, and the state of a final casting (outgoing product) can be made more excellent.

Hereinafter, a die casting method using the die casting apparatus having the above-described configuration will be described in detail with reference to FIG. 2.

2 is a flowchart illustrating a die casting method according to another embodiment of the present invention.

As shown, the molten metal material 11 is first provided to the dissolution tank 10 (S1). The molten metal material may be one of aluminum, magnesium, and aluminum magnesium alloy. Then, the molten metal material is supplied to the dosing pipe 30 using a pressure reduction device in the sleeves 40 and 45 or a pressure device (not shown) in the dissolution tank 10 (S3). The flanger driving unit 70 is supplied from the dosing pipe 30 to the molten metal material 11 is introduced into the first portion 41 of the sleeve (40, 45) at a first speed (S5). At this time, the decompression device is controlled so that the molten metal material 11 remaining in the dosing pipe 30 is returned to the dissolution tank 10. Here, the dosing pipe 30 is inclined with respect to the machine sleeve (40). At this time, the second electromagnetic stirring unit 52 is operated to prevent the molten metal material returned from being fused to the inner wall of the dosing pipe 30. The first speed of the molten metal material 11 is faster than the second speed described later. The molten metal material introduced into the sleeves 40 and 45 through the flanger 60 has a second velocity to the second portion 46 in a reaction state (an abnormal state, that is, a state where solid and liquid metal are present together). Is introduced (S7). The second speed is slower than the first speed, and the molten metal material 11 is well stirred in the solid state. That is, after the molten metal material 11 is cooled to the solid state in the second part 46, electrons are passed through the first electromagnetic stirring units 51 and 51 ′ with respect to the molten metal material in the solidified state. It is stirred miraculously. Then, the flanger drive unit 70 is injected into the molten metal material 11 in the reaction state at a third speed into the hollow portion 23 (the empty space, that is, the space in which the casting is formed) of the mold 20. (The third speed here is such that the molten metal material 11 is rapidly introduced into the mold, so that the shape of the casting can be precisely made (S9). Then, the casting is taken out (S11) and the mold 20 The release agent is to be injected (S13).

A die casting method according to another embodiment of the present invention described above will be described in more detail with reference to FIG. 3.

3A to 3E are schematic views of a die casting apparatus for explaining in detail a die casting method according to another embodiment of the present invention.

Figure 3a shows the molten metal material flowing into the dosing tube, Figure 3b shows the molten metal material passes through the first portion of the sleeve, Figure 3c shows the molten metal material to the second portion of the sleeve 3D is a view showing a state in which molten metal material has flowed into a hollow part in a mold, and FIG. 3E is a view showing a state in which castings are taken out.

As shown in FIG. 3A, the molten metal material 11 in the dissolution tank 10 flows into the dosing pipe 30 by a pressure reduction device in the sleeves 40 and 45 or a pressurization device in the dissolution tank 10. The decompression device continues to operate so that the molten metal material 11 flows into the machine sleeve 40 via the dosing tube 30 as shown in FIG. 3B. At this time, the flanger drive unit 70 drives the flanger 60 at a first speed so that the molten metal material 11 moves vertically toward the mold 20. At this time, the operation of the decompression device is stopped, and the molten metal material remaining in the dosing pipe 30 is returned to the dissolution tank 10. At this time, since the dosing pipe is inclined with respect to the machine sleeve 40, the molten metal material 11 is more easily returned to the dissolution tank 10. In addition, the second electromagnetic stirring unit 52 is operated to electromagnetically stir the returned molten metal material. Accordingly, the molten metal material can be prevented from being fused to the inner wall of the dosing pipe 30. When the molten metal material 11 introduced into the sleeves 40 and 45 also reaches the second portion 46 of the sleeves 40 and 45 (the molten metal material is in a solid state), The flanger drive 70 is controlled to move at a second speed (slower than the first speed). At the same time, the first electromagnetic stirring portions 51 and 51 'are operated to perform the electromagnetic stirring operation on the molten metal material 11 in the reaction state. Then, as shown in FIG. 3D, the flanger drive unit 70 operates the flanger 60 at a third speed (speed higher than the second speed) to drive the molten metal material in the solid state of the mold 10. It is to be pressed into the hollow portion (23). Thus, the formation of the casting is completed. Then, as shown in FIG. 3E, the mold 20 is separated, whereby the casting is taken out.

The die-casting apparatus and the die-casting method described above are not limited to the configuration and method of the embodiments described above, but the embodiments may be a combination of all or part of the embodiments selectively so that various modifications may be made. It may be configured.

10: dissolution tank
11: molten metal
20: mold
21: upper mold
22: lower mold
23: extract (cast)
30: dosing pipe
40: machine sleeve
41: first part
45: mold sleeve
46: second part
51: first electromagnetic stirring unit
52: second electromagnetic stirring unit
60: flanger
70: flanger drive unit

Claims (10)

A die casting apparatus comprising a melting tank for storing a molten metal material and a mold for forming a casting using the molten metal material,
A dosing tube extending from the dissolution tank for supplying the molten metal material stored in the dissolution tank;
A sleeve extending from the dosing tube to introduce the molten material supplied from the dosing tube into the mold, the sleeve having a first portion through which the molten metal material is transferred in a molten state, and the molten metal material in a reaction state A dosing tube extending at a position 51-80% away from the mold with respect to the entire length of the sleeve;
A first electromagnetic stirring part installed around the second part to electromagnetically stir the molten metal material in the reaction solid state;
And a flanger installed in the sleeve to vertically convey the molten metal material to the mold.
The method of claim 1,
And the molten metal material is one of aluminum, magnesium, aluminum magnesium alloy.
The method of claim 1,
And the first electromagnetic stirring portion is installed in at least one of the inside of the mold and around the sleeve.
The method of claim 1,
And a flanger driver for driving the flanger at a first speed when the flanger moves to the first portion and driving the flanger at a second speed slower than the first speed when moving at the second portion. Die casting apparatus.
The method of claim 1,
And a second electromagnetic stirring portion of the dosing tube, installed before the sleeve after the dissolution tank and configured to electromagnetically stir the returned molten metal material.
Providing a molten metal material to the melting bath;
Supplying the molten metal material to a dosing tube using a decompression device;
Introducing the molten metal material supplied from the dosing tube at a first speed into the first portion of the sleeve;
Introducing a molten metal material introduced into the sleeve through a flanger into a second portion at a second speed, the second speed being slower than the first speed;
Cooling the molten metal material to a solid state in the second portion;
Electromagnetically stirring the molten metal material in the solidified state through a first electromagnetic stirring unit; And
And injecting said electromagnetically stirred molten metal material into a mold.
The method according to claim 6,
And wherein said molten metal material is one of aluminum, magnesium, aluminum magnesium alloy.
The method according to claim 6,
And the first electromagnetic stirring portion is installed in at least one of the inside of the mold and around the sleeve.
The method according to claim 6,
And the dosing tube is extended with respect to the sleeve at a position 51-80% away from the mold with respect to the entire length of the sleeve.
The method according to claim 6,
And electromagnetically stirring the molten metal material of the dosing tube, which is installed before the sleeve after the dissolution tank and returned to the dissolution tank by a second electromagnetic stirring portion.
KR1020100021788A 2010-03-11 2010-03-11 Die casting device and die casting method KR101212328B1 (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
KR1020100021788A KR101212328B1 (en) 2010-03-11 2010-03-11 Die casting device and die casting method

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KR20110102661A true KR20110102661A (en) 2011-09-19
KR101212328B1 KR101212328B1 (en) 2012-12-13

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104525799A (en) * 2014-12-26 2015-04-22 西安交通大学 Large ring semisolid manufacturing process using radial-axial rolling strain induction method
CN108247002A (en) * 2018-03-26 2018-07-06 东莞帕姆蒂昊宇液态金属有限公司 A kind of semisolid vertical die-casting machine
WO2020085775A1 (en) * 2018-10-24 2020-04-30 주식회사 퓨쳐캐스트 Die casting apparatus provided with movable electromagnetically controlled structure control module
US11577308B2 (en) 2018-10-24 2023-02-14 Futurecast Co., Ltd. Die casting apparatus provided with movable electromagnetically controlled structure control module
WO2023236942A1 (en) * 2022-06-06 2023-12-14 深圳市北工实业有限公司 Vertical molding machine
US11931798B2 (en) * 2021-01-04 2024-03-19 Hanjoo Light Metal Co., Ltd. Two-segment electromagnet semi-solid diecasting apparatus and diecasting method using same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1119759A (en) 1997-06-30 1999-01-26 Hitachi Metals Ltd Casting method for die casting and apparatus thereof
EP1004374B1 (en) 1998-11-25 2002-02-13 Ritter Aluminium Giesserei Gmbh Die casting method and apparatus to produce alloy castings with thixotropic characteristics

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104525799A (en) * 2014-12-26 2015-04-22 西安交通大学 Large ring semisolid manufacturing process using radial-axial rolling strain induction method
CN104525799B (en) * 2014-12-26 2016-05-25 西安交通大学 The semisolid manufacturing process of the radial-axial rolling strain-induced method of large ring
CN108247002A (en) * 2018-03-26 2018-07-06 东莞帕姆蒂昊宇液态金属有限公司 A kind of semisolid vertical die-casting machine
WO2020085775A1 (en) * 2018-10-24 2020-04-30 주식회사 퓨쳐캐스트 Die casting apparatus provided with movable electromagnetically controlled structure control module
US11577308B2 (en) 2018-10-24 2023-02-14 Futurecast Co., Ltd. Die casting apparatus provided with movable electromagnetically controlled structure control module
US11931798B2 (en) * 2021-01-04 2024-03-19 Hanjoo Light Metal Co., Ltd. Two-segment electromagnet semi-solid diecasting apparatus and diecasting method using same
EP4245437B1 (en) * 2021-01-04 2024-11-06 Hanjoo Light Metal Co., Ltd. Two-part electromagnet semi-solidification die-casting device and manufacturing method using same
WO2023236942A1 (en) * 2022-06-06 2023-12-14 深圳市北工实业有限公司 Vertical molding machine

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