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Low-pressure casting filling method and low-pressure casing filling equipment used by same

A low-pressure casting and filling technology, which is applied in the field of casting, can solve problems such as oxidation, and achieve the effects of simple process, great economic and social value, and easy operation

Active Publication Date: 2009-11-25
沈阳铸研科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key point is to solve the problem of anti-combustion of the magnesium liquid level inside the riser 10 and the oxidation of the magnesium liquid adhered to the inner wall of the riser 10 in low-pressure casting of castings (especially magnesium alloy parts), so as to minimize the oxidation inclusions during the filling process of low-pressure casting , Improve the quality of magnesium alloy low pressure castings

Method used

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  • Low-pressure casting filling method and low-pressure casing filling equipment used by same
  • Low-pressure casting filling method and low-pressure casing filling equipment used by same
  • Low-pressure casting filling method and low-pressure casing filling equipment used by same

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A low-pressure casting equipment with simple structure, easy operation and good technical effect and a method for using the equipment to perform low-pressure casting operations.

[0036] 1) Equipment used in low pressure casting method

[0037] Magnesium alloy low-pressure casting filling equipment includes holding furnace, mold clamping and opening and closing devices, gas supply system, and control system; among them: a crucible containing magnesium alloy liquid is installed in the furnace hearth of the holding furnace, and there is a riser pipe on the upper part of the crucible 10. It is characterized by:

[0038] An adapter sleeve is provided between the riser pipe 10 and the casting port of the mold. The magnesium alloy liquid is introduced into the mold from the riser pipe 10 through the adapter sleeve. A protective gas interface is provided on the adapter sleeve to protect The gas enters the inner cavity of the adapter sleeve communicating with the upper mouth of the...

Embodiment 2

[0049] 1) Equipment used in low pressure casting method

[0050] Magnesium alloy low-pressure casting mold filling equipment includes holding furnace, mold mounting and opening and closing devices, gas supply system, and control system; among them: a crucible containing magnesium alloy liquid is installed in the furnace hearth of the holding furnace, and there is a riser pipe on the upper part of the crucible 10. It is characterized by:

[0051] An adapter sleeve is provided between the riser pipe 10 and the casting port of the mold. The magnesium alloy liquid is introduced into the mold from the riser pipe 10 through the adapter sleeve. A protective gas interface is provided on the adapter sleeve to protect The gas enters the inner cavity of the adapter sleeve communicating with the upper mouth of the riser pipe 10 to protect the magnesium liquid suspended in the upper mouth of the riser pipe 10; the side wall of the adapter sleeve is provided with a magnesium liquid sensor mount...

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Abstract

The invention relates to a low-pressure casting filling method comprising the steps of arranging a reducing sleeve arranged on an upper port of a riser tube (10), guiding magnesium alloy liquid from the riser tube (10) to a cast through the reducing sleeve; arranging a protective gas inlet on the reducing tube, and enabling the protective gas into the space above the magnesium alloy liquid in the riser tube (10) for protecting the magnesium alloy liquid in the riser tube (10) and reducing oxidation. The a low-pressure casting filling method uses a low-pressure casting filling device which includes the reducing sleeve composed of an upper part (1) of the reducing sleeve, a lower part of the reducing sleeve; wherein a magnesium alloy liquid sensor mounting hole (10) is arranged on a lower side wall of the lower part of the reducing sleeve; a plurality of subsize air suctions with enough section width are arranged on a joint face of the upper part (1) and the lower part (8) of the reducing sleeve, and the air suctions are slit structures with rectangular sections. The low-pressure casting filling method of the invention can obviously reduce the oxidation of the magnesium liquid in the riser tube and improve the quality of a magnesium alloy low-pressure casting member.

Description

Technical field: [0001] The present invention relates to casting technology, and in particular provides a low-pressure casting filling method for magnesium alloys and a low-pressure casting filling equipment used in the same. Background technique: [0002] In the prior art, magnesium alloy has many outstanding advantages that traditional conventional materials do not have: light weight, its density is about 1.78~1.82, which is 64% of aluminum alloy and 23% of steel; its specific strength and rigidity are good; magnesium alloy At the same time, it has a good ability to absorb vibrations, and its vibration damping performance is good; in addition, magnesium alloys also have high thermal conductivity, non-toxic, non-magnetic, and strong electromagnetic interference shielding capabilities. These characteristics of magnesium alloy can well meet the requirements of aerospace and military products for weight reduction, noise absorption, shock absorption, and radiation protection. At the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/04B22D18/08B22D21/04
Inventor 娄延春冯志军李玉胜闫卫平郝启堂马志毅
Owner 沈阳铸研科技有限公司
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