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A two-chamber low-pressure casting holding furnace and low-pressure casting method

A low-pressure casting and holding furnace technology, which is applied in the field of casting equipment, can solve problems such as insufficient sealing capacity of the intermediate valve of molten aluminum, liquid level changes in the low-pressure casting room, micro-infiltration of the intermediate valve of molten aluminum, etc. Blocking ability, easy to work effect

Active Publication Date: 2021-09-24
能硕热技术(清远)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Because the aluminum liquid intermediate valve is made of high-hardness ceramics, there is a risk of wear, and the worn aluminum liquid intermediate valve has the risk of micro-penetration
[0005] 2. The sealing ability of the worn aluminum liquid intermediate valve is insufficient. At the same time, because the heat preservation chamber is in a state of normal pressure, the pressure in the pressurized chamber cannot be too large, because the excessive pressure will cause the aluminum liquid in the low pressure casting room to flow from around the aluminum liquid intermediate valve. Micro-leakage, which can lead to liquid level changes in the low-pressure casting room and even safety accidents
At the same time, with the introduction of new energy vehicles, there are more and more castings with large projected area and high mechanical performance requirements. This requires increasing the pressure of the pressurized chamber during casting, which requires a maximum of 6bar, so ceramic intermediate valves are difficult to do.

Method used

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  • A two-chamber low-pressure casting holding furnace and low-pressure casting method
  • A two-chamber low-pressure casting holding furnace and low-pressure casting method
  • A two-chamber low-pressure casting holding furnace and low-pressure casting method

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Embodiment 1

[0059] refer to figure 2 as shown, figure 2 It is a specific structural diagram of an embodiment of the present invention.

[0060] A two-chamber low-pressure casting holding furnace, comprising a holding room 10, a low-pressure casting room 20, and a communication chamber 30, the holding room 10 communicates with the low-pressure casting room 20 through the communication room 30, and the low-pressure casting room 20 is connected with a riser pipe 201 and a second An air inlet pipe 202 , a liquid inlet 101 is arranged in the heat preservation chamber 10 . The heat preservation chamber 10 includes a sedimentation chamber 102 and a confluence chamber 103 which communicate with each other. The height of the confluence chamber 103 is higher than that of the sedimentation chamber 102 .

[0061] The communication chamber 30 includes a liquid inlet section 301 , a transition section 302 and a liquid outlet section 303 , the liquid inlet section 301 is connected with the confluenc...

Embodiment 2

[0074] refer to image 3 as shown, image 3 It is a specific structural diagram of Embodiment 2 of the present invention.

[0075] In this embodiment, the holding furnace also includes a blockage removal device, which includes a first blockage removal part and a second blockage removal part, the first blockage removal part includes a first blockage removal head 801 and drives the first blockage removal head 801 to The first driving member 802 for piston movement in the liquid inlet section 301; the second blockage removal part includes a second blockage removal head 901 and drives the second blockage removal head 901 to perform piston movement at the connection between the liquid inlet section 301 and the confluence cavity 103 The second driving member 902 and the second unclogging head 901 are arranged at the bottom of the manifold cavity 103 .

[0076] It should be noted that, in this embodiment, both the first driving member 802 and the second driving member 902 are drivi...

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Abstract

The invention relates to a two-chamber low-pressure casting holding furnace and a low-pressure casting method. The two-chamber low-pressure casting holding furnace includes a holding chamber, a low-pressure casting chamber, a communication chamber, a liquid riser, a first air inlet pipe, and a liquid port: the holding chamber includes a sedimentation chamber and a confluence chamber; the communication chamber includes a liquid inlet section , transition section and liquid outlet section. Compared with the existing technology, the holding chamber of this holding furnace is directly connected with the low-pressure casting chamber, and the intermediate valve is removed, and its pressure capacity is greatly increased. By setting the second air intake pipe to cooperate with the first air intake pipe, It can generate greater pressure, which greatly improves the overall performance of this holding furnace, enabling this holding furnace to produce thin structural parts with larger projected areas, such as automobile chassis parts, A-pillars and B-pillars, etc., which greatly improves The practicability of this holding furnace has been improved.

Description

technical field [0001] The invention relates to the technical field of casting equipment, in particular to a two-chamber low-pressure casting holding furnace and a low-pressure casting method. Background technique [0002] Now the wheel manufacturing in the automobile industry generally adopts low-pressure casting, which is composed of holding furnace, mold machine, control system and so on. The molten aluminum is added to the holding furnace through the transfer pot, and the holding furnace is sealed. During work, the air pressure is controlled to press the aluminum liquid in the holding furnace to the mold of the machine through the liquid rising pipe, and qualified products can be obtained according to the specific pressurization and cooling process. [0003] refer to figure 1 As shown, the main working process of the low-pressure casting holding furnace in the prior art is as follows. The liquid aluminum level in the initial holding room is higher than the liquid alumi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D18/04
CPCB22D18/04
Inventor 何建文陈伟
Owner 能硕热技术(清远)有限公司