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Die for die casting and method of manufacturing cast product

A technology of the mold and product department, which is applied in the field of molds for die-casting and the manufacture of casting products, can solve the problems of lack of strength of the protruding part, it is difficult to fill the protruding part with molten metal, and achieve the effect of reducing casting

Inactive Publication Date: 2009-09-02
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Magnesium alloys or similar molten metals become highly directional streams due to gravity, and it is therefore difficult to fill protrusions with molten metal
For this reason, it is likely to cause defective casting, such as lack of strength at the protrusion or similar problems

Method used

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  • Die for die casting and method of manufacturing cast product
  • Die for die casting and method of manufacturing cast product
  • Die for die casting and method of manufacturing cast product

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] The following will refer to Figures 1 to 4 A mold 1 according to an embodiment of the present invention, and a method of producing a cast product 2 are described. figure 1 A mold 1 according to this embodiment is shown.

[0023] The mold 1 is used for die casting in a cold-chamber die casting system, for example. For example, magnesium alloy, aluminum alloy or zinc alloy is injected into this mold 1 by pressure as a molten metal. Incidentally, the die according to the present invention is not limited to the above-mentioned materials, and can be widely used for die-casting various materials used as molten metal.

[0024] figure 2 An example of a cast product 2 of a product cast by using the mold 1 is shown. This cast product 2 is, for example, a component constituting a part of a main body casing of an electronic device such as a laptop computer, or a part of a casing of a display unit of an electronic device. A case constituting the bottom of the device main body...

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PUM

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Abstract

A die (1) includes a stationary die (31) and a movable die (32). Between the stationary die and the movable die, a product section which includes a main product section (66), and a protrusion part (67a, 67b) protruding from the main product section (66) toward a side of the biscuit section, a first runner (53) configured to guide molten metal toward the main product section (66), and a second runner (55) configured to guide molten metal toward the protrusion part (67a, 67b) are formed. The second runner (55) is provided at a position deviated from the first runner (53) three-dimensionally, and overpasses the first runner (53).

Description

technical field [0001] One embodiment of the present invention relates to a technology associated with die casting. Background technique [0002] A die-casting mold for a cold-chamber die casting system includes a biscuit section for receiving molten metal from an injection device of a casting machine, a product section in which a product is cast, for A main runner that guides the molten metal from the billet part toward the product part, and a main gate (main gate) provided between the main runner and the product part for making the molten metal The velocity of the flow accelerates. [0003] Here, the solidification time of molten metal such as magnesium alloy or the like is very short, and therefore, in a die-casting mold having a small flow cross-sectional area (that is, the cross-sectional area of ​​the space through which the molten metal flows), the molten metal Does not fill every corner of the product section, and in some cases insufficient filling occurs. For thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D17/22B22D17/00B22D17/08
CPCB22D17/22
Inventor 池田博平尾浩昭
Owner KK TOSHIBA
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