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Additional mould locking device of indirect extrusion casting

A technology of squeeze casting and additional lock, which is applied in the field of squeeze casting, can solve the problems of casting surface quality degradation, difficult to meet, casting performance degradation, etc., and achieve the effects of reduced residence time, small space, and large clamping force

Inactive Publication Date: 2006-01-11
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

However, the extrusion force of the upper cylinder of the vertical press is usually difficult to meet the clamping force requirements of indirect extrusion casting for large parts, and the method of reducing the specific pressure has to be used in production, resulting in a decrease in the performance of the casting;
[0005] 2) Pouring with the upper and lower molds open increases the residence time of the liquid metal in the barrel, as well as the oxidation and air absorption of the molten metal. At the same time, pouring debris is likely to remain on the surface of the lower mold during the pouring process, requiring additional cleaning , and degrade the casting surface quality
However, this device cannot increase the clamping force during squeeze casting, nor can it realize the closed mold pouring of vertical press squeeze casting.

Method used

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  • Additional mould locking device of indirect extrusion casting

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Embodiment Construction

[0018] Taking the indirect extrusion casting production of a certain aluminum alloy wheel hub as an example, the present invention is further clarified:

[0019] 1. Squeeze casting equipment

[0020] Hub squeeze casting is carried out on LY-1600 vertical press, such as figure 1 As shown, the base 1 is connected with the working surface of the press by bolts; the extrusion barrel 2 is fixedly connected with the base 1 through the fixed flange 4; the extrusion head 3 is fixedly connected with the lower cylinder of the press; the lower mold base 5 is connected with the base 1 Contact fit, but no fixed connection; the lower mold 6 is fixedly connected with the lower mold base 5, and the upper mold 7 is fixedly connected with the upper mold base 8; the upper mold base 8 is fixedly connected with the upper mold connecting plate 12 through the connecting column 9; The upper die connecting plate 12 is fixedly connected with the upper cylinder of the press.

[0021] 2. Additional cla...

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Abstract

An additional mould-locking apparatus for indirect extrusion casting features that an additional mould-locking pull rod is used between upper and lower mould seats, its one end is fixed to lower mould seat, its another end has a mould-locking gap regulating block, and a hydraulic cylinder is fixed to a connecting plate for upper mould and its seat for driving the mould-locking block in order to lock or unlock mould.

Description

technical field [0001] The invention relates to squeeze casting, in particular to an additional clamping device which can increase the clamping force and realize mold clamping and pouring during the indirect squeeze casting process by using a vertical press. Background technique [0002] Squeeze casting is a process in which a certain liquid or semi-solid metal is injected into a metal mold cavity, and then mechanical static pressure is applied to make it crystallize, solidify and form under pressure. Among them, indirect squeeze casting can produce large, complex and dimensionally accurate parts, which is the main development direction. The equipment currently used in squeeze casting production in my country is mainly obtained by improving the general vertical press. Its main procedures and features are: 1) Preheating the mold, opening the upper and lower molds in turn to clean the cavity and spray paint; 2) Manually pour the alloy solution into the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/02
Inventor 陈维平赵海东李元元朱权利王郡文屈盛官罗宗强
Owner SOUTH CHINA UNIV OF TECH
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