A casting device and method integrating low pressure filling and extrusion solidification

A low-pressure, cavity technology, applied in the field of metal casting forming technology and molds, can solve problems such as the difficulty in separating the stopper from the casting, and achieve the effects of cost and performance, good application prospects, and scientific and reasonable structural design

Active Publication Date: 2017-03-01
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the long part of the stopper covered by metal in this process, it is easy to cause difficulty in separating the stopper from the casting during demoulding.

Method used

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  • A casting device and method integrating low pressure filling and extrusion solidification
  • A casting device and method integrating low pressure filling and extrusion solidification
  • A casting device and method integrating low pressure filling and extrusion solidification

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Embodiment Construction

[0031] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] The present invention can have the following two schemes in terms of technical realization, which are called scheme A and scheme B.

[0033] Option A

[0034] Such as figure 1 As shown, this scheme is a casting device integrating low-pressure filling and extrusion solidification, including an upper support plate 6, a lower support plate 5, a side mold 2 placed between the upper support plate 6 and the lower support plate 5, and fixed on the upper The lower end of the support plate 6 is located at the upper mold 3 in the side mold 2, the lower mold 1 is fixed at the upper end of the lower support plate 5 and located in the side mold 2, the suspension plate 18 is co...

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Abstract

The invention discloses an integrated low-pressure mould-filling and squeezing solidification casting device and method used for keeping a certain deviation between the center line of a low-pressure mould-filling liquid lifting pipe and the center line of a pouring opening. The casting device is provided with a molten metal mould-filling L-shaped pouring channel, through holes are formed in the horizontal channel position of the L-shaped pouring channel. When mould-filling is conducted, molten metal enters a cavity through the liquid lifting pipe and the L-shaped pouring channel, the through holes are blocked by a wedge-shaped plunger chip, after the mould-filling is completed, the wedge-shaped plunger chip is moved to block the cavity, the through holes are communicated with the liquid lifting pipe through the L-shaped pouring channel, and the remaining molten metal backflows to a maintaining furnace under the action of gravity; a squeezing oil cylinder is installed on an upper supporting plate, and after the cavity is blocked by the wedge-shaped plunger chip, solidification under pressing is conducted on the molten metal in the cavity by the squeezing oil cylinder; the combination of the low-pressure mould-filling and the squeezing solidification is achieved, strong points of the low-pressure mould-filling and the squeezing solidification are played, two mould locking modes are provided according to squeezing pressure, the balance of the cost and the performance is achieved as much as possible, and a good application prospect is achieved.

Description

technical field [0001] The invention relates to the field of metal casting forming technology and moulds, in particular to a casting device and method integrating low-pressure mold filling and extrusion solidification. Background technique [0002] Low-pressure casting technology is a casting method that uses gas pressure to press molten metal from the bottom of the cavity into the mold, and makes the casting crystallize and solidify under a certain pressure. The pressure and pouring speed can be adjusted during pouring in this process, and the molten metal fills the mold smoothly, which can avoid splashing, turbulent flow, reduce entrainment and oxidation, and improve the quality and pass rate of castings. In particular, the low-pressure casting technology has achieved great success in the field of alloy wheel hub processing. It is the mainstream process for the production of automobile hubs in the world. The automobile hubs produced by this technology account for the vast ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D18/04B22D18/02
Inventor 韩志强张宏伟
Owner TSINGHUA UNIV
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