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Protective equipment for melt-out magnesium/magnesium alloy

A protection device and magnesium alloy technology are applied in the field of protection devices for molten magnesium/magnesium alloys, which can solve problems such as cost increase, achieve simple assembly, reduce production costs, and achieve easy effects.

Inactive Publication Date: 2008-12-03
METAL INDS RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the greenhouse effect of the above two new types of protective gases is much lower than that of SF6, in terms of price, FK is SF 6 10 times of that, although its dosage is low, but if not properly controlled, the cost will inevitably increase

Method used

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  • Protective equipment for melt-out magnesium/magnesium alloy
  • Protective equipment for melt-out magnesium/magnesium alloy
  • Protective equipment for melt-out magnesium/magnesium alloy

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Embodiment Construction

[0009] refer to figure 1 , which shows a schematic diagram of the protective device for molten magnesium / magnesium alloy of the present invention. The protection device 1 includes: a furnace 11 , a nozzle module 12 , a sampling system 13 and a data processing device 14 . The melting furnace 11 is used to melt and contain molten magnesium / magnesium alloy 15 . The top of the furnace 11 has an observation window 111 and at least one gas channel 112 . The state inside the furnace 11 can be directly observed through the observation window 111 . The gas channel 112 is used to exhaust the air originally in the furnace 11 to reduce the oxygen content in the furnace 11 , thereby reducing the chance of the molten magnesium / magnesium alloy 15 contacting oxygen.

[0010] The nozzle module 12 has a first end 121 and a second end 122, the first end 121 and the second end 122 are connected, the first end 121 is arranged inside the melting furnace 11, and the second Terminal 122 is connec...

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Abstract

The invention relates to a protection device of liquated magnesium / magnesium alloys, which comprises a furnace and a nozzle module. The furnace is used for holding the liquated magnesium / magnesium alloy; the nozzle module is provided with a first end and a second end; the first end is arranged inside the furnace; the second end is connected to a liquid carbon dioxide supply source; the nozzle module is used for converting liquid carbon dioxide into solid and gaseous carbon dioxide which then enters the furnace. By utilizing the solid and gaseous carbon dioxide, the surface temperature of the liquated magnesium / magnesium alloy is reduced, and the liquated magnesium / magnesium alloy can be separated from the air in the furnace, so as to prevent the liquated magnesium / magnesium alloy from burning. Therefore, the liquated magnesium / magnesium alloy can be protected, and the greenhouse effect caused by the conventional casting technique is improved.

Description

technical field [0001] The present invention relates to a protection device for molten alloys, in particular, a protection device for molten magnesium / magnesium alloys. Background technique [0002] At present, most of the protective gas used for molten magnesium alloy is sulfur hexafluoride (SF 6 ), which, after being mixed with dry air and carbon dioxide (or nitrogen), is directly and continuously passed into the closed furnace to prevent the molten magnesium alloy from burning, thereby achieving a protective effect. Although, SF6 has a larger molecular weight (146.5) than air, so it will settle on the surface of the molten magnesium alloy after entering the holding furnace to achieve a better protection effect. However, the greenhouse effect index (GWP) of SF6 is 23,900 times that of carbon dioxide, so in the Kyoto Protocol, SF 6 It is one of the strictly regulated gases, so in order to prevent the worsening trend of global warming, SF 6 The usage and acquisition will ...

Claims

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Application Information

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IPC IPC(8): C22B9/05
Inventor 杨胜仲郭子祯邱云进
Owner METAL INDS RES & DEV CENT
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