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Casting method and casting device

A standby position, molten metal technology, applied to casting equipment, casting molding equipment, casting molds, etc., can solve the problems of increased frequency of replacement of pipe head 107, difference between left and right flow, expensive casting equipment, etc., to achieve Improved fluidity, suppressed temperature drop, and equalized flow

Pending Publication Date: 2022-06-03
HONDA FOUNDRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] First, the molten metal passing through the pipe head 107 collides with the cutter 105, and the left and right direction changes by 90°, but due to the sudden change of the flow direction, the left flow and the right flow are different
This difference becomes the main cause of casting defects
[0017] Second, the ceramics constituting the pipe head 107 are represented by pottery, which has weak thermal shock resistance.
The frequency of replacement of the tube head 107 has increased, which has become a major cause of high manufacturing costs
[0018] Third, since the vacuum vessel 114, vacuum pumps 115, 116 are necessary, the casting apparatus 100 becomes expensive

Method used

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  • Casting method and casting device
  • Casting method and casting device

Examples

Experimental program
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Effect test

Embodiment 1

[0077] (1-1) Classification: Ceramics

[0078] (1-2) Types of ceramics: zirconia (ZrO 2 )

[0079] (1-3) Thermal conductivity λ: 3W / (m·K)

Embodiment 2

[0081] (2-1) Classification: Ceramics

[0082] (2-2) Types of ceramics: alumina (Al 2 O 3 )

[0083] (2-3) Thermal conductivity λ: 30W / (m·K)

[0084] (3) Comparative example:

[0085] (3-1) Classification: Metal

[0086] (3-2) Type of metal: carbon steel

[0087] (3-3) Thermal conductivity λ: 43W / (m·K)

[0088] 2. Evaluation:

[0089] • The smaller the thermal conductivity λ, the smaller the temperature drop of the molten metal. Compared with metals, ceramics are preferred because of their smaller thermal conductivity λ.

[0090] · Among ceramics, zirconia is preferable because it has a smaller thermal conductivity λ than alumina.

[0091] Furthermore, it is known that when cold pottery is poured hot water, the pottery breaks. Zirconia is the same ceramic as pottery, and therefore has a disadvantage of being weak in thermal shock resistance. Alumina also has the disadvantage of weak thermal shock resistance.

[0092] like Figure 4 As shown, the ceramic 41 has a p...

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Abstract

A casting method in which a molten metal is made to stand by at a standby position between casting and subsequent casting, and during casting, the molten metal is diverted from one gate (44) to a plurality of runners (46, 47), in which the runners (46, 47) are branched at a V-shaped portion (45) having a V-shape, and the V-shaped portion (45) has a V-shape in which the runners (46, 47) are diverted from one gate (44) to the plurality of runners (46, 47) in which the runners (46, 47) are diverted from one gate (44). The waiting position of the molten metal is set to a position (P1, P2, P4) higher than the V-shaped part (45), and the V-shaped part (45) is filled with the molten metal during the repeated casting.

Description

technical field [0001] The present invention relates to a casting method and a casting device. Background technique [0002] A technique for obtaining a cast product by pressurizing a molten metal into a mold is known (for example, refer to Patent Document 1 ( figure 1 )). [0003] Patent Document 1 will be described with reference to the following drawings. [0004] Figure 7 It is the basic structure diagram of the existing casting apparatus. [0005] like Figure 7 As shown, the casting apparatus 100 includes an upper mold 106, a lower mold 108 having a head 107, a sleeve 111 arranged to face the head 107, a heater 112 surrounding the sleeve 111, and a sleeve 112 accommodated in the sleeve. The plunger 113 in 111 , the vacuum container 114 surrounding them all, and the vacuum pumps 115 and 116 attached to the vacuum container 114 . [0006] The upper mold 106 has a first cavity 101 , a second cavity 102 , a first runner 103 , a second runner 104 and a cutter 105 . ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/06B22D18/08
CPCB22D18/06B22D18/08B22C9/08B22D37/00B22D18/04B22C9/082B22D7/00
Inventor 本桥直恭厚泽义一手塚步伊藤康之
Owner HONDA FOUNDRY