Magnesium alloy for performing semi-solid extrusion casting on forming piece under atmospheric environment as well as process

A semi-solid extrusion and atmospheric environment technology, applied in the field of alloys, can solve the problems that hinder the industrialization process and market share of materials, reduce the mechanical properties and corrosion resistance of alloys, and magnesium alloy inclusions, etc., and achieve a wide range of solidification temperature, Outstanding flame retardant performance and uniform distribution of ingredients

Inactive Publication Date: 2019-01-08
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is simple and easy, it will produce a lot of irritating gases (such as Cl 2 , HCl, HF, etc.) and pollute the environment
In addition, the addition of flux during casting will cause inclusions in the magnesium alloy, reducing the mechanical properties and corrosion resistance of the alloy.
Moreover, when rare earth elements or other active elements are added to the alloy, the flux is easy to react with these elements, resulting in the loss of these added elements
(2) The gas protection method uses SF 6 , SO 2 and CO 2 , but their disadvantages are very obvious
However, although these flame-retardant magnesium alloys have excellent flame-retardant properties, so far this type of material still has many shortcomings in mechanical and physical properties, which has seriously hindered the industrialization process and market share of this type of material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017]Disclosed are a magnesium alloy and a process for a semi-solid squeeze casting formed part in an atmospheric environment. In terms of weight percentage, the composition of the alloy is Sn: 5.0wt.%, Sc: 0.2wt.%, Bi: 1.5wt.%, Ti: 0.4wt.%, Te: 0.1wt.%, In: 2.0wt.% , Ru: 0.2wt.%, Cd: 1.5wt.%, and the balance is magnesium. The above-mentioned magnesium alloy and process for semi-solid squeeze casting formed parts in an atmospheric environment includes the following smelting steps (under a protective atmosphere) and processing steps (under an atmospheric environment): adding the above-mentioned raw materials into an induction furnace protected by argon In an electric furnace, a silicon carbide crucible is used; the alloy melt is formed by induction heating to 800 degrees, and the electromagnetic stirring effect is used to fully stir for about 15 minutes; the alloy melt is kept at 800 degrees for 15 minutes and then cast into a water glass or graphite mold In-cast molding. In...

Embodiment 2

[0020] Disclosed are a magnesium alloy and a process for a semi-solid squeeze casting formed part in an atmospheric environment. In terms of weight percentage, the composition of the alloy is Sn: 8.0wt.%, Sc: 0.4wt.%, Bi: 1.8wt.%, Ti: 0.6wt.%, Te: 0.2wt.%, In: 2.5wt.% , Ru: 0.5wt.%, Cd: 2.0wt.%, and the balance is magnesium. The above-mentioned magnesium alloy and process for semi-solid squeeze casting formed parts in an atmospheric environment includes the following smelting steps (under a protective atmosphere) and processing steps (under an atmospheric environment): adding the above-mentioned raw materials into an induction furnace protected by argon In an electric furnace, a silicon carbide crucible is used; the alloy melt is formed by induction heating to 800 degrees, and the electromagnetic stirring effect is used to fully stir for about 15 minutes; the alloy melt is kept at 800 degrees for 15 minutes and then cast into a water glass or graphite mold In-cast molding. I...

Embodiment 3

[0023] Disclosed are a magnesium alloy and a process for a semi-solid squeeze casting formed part in an atmospheric environment. In terms of weight percentage, the composition of the alloy is Sn: 5.2wt.%, Sc: 0.3wt.%, Bi: 1.6wt.%, Ti: 0.5wt.%, Te: 0.1wt.%, In: 2.4wt.% , Ru: 0.3wt.%, Cd: 1.8wt.%, and the balance is magnesium. The above-mentioned magnesium alloy and process for semi-solid squeeze casting formed parts in an atmospheric environment includes the following smelting steps (under a protective atmosphere) and processing steps (under an atmospheric environment): adding the above-mentioned raw materials into an induction furnace protected by argon In an electric furnace, a silicon carbide crucible is used; the alloy melt is formed by induction heating to 800 degrees, and the electromagnetic stirring effect is used to fully stir for about 15 minutes; the alloy melt is kept at 800 degrees for 15 minutes and then cast into a water glass or graphite mold In-cast molding. I...

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PUM

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Abstract

The invention discloses magnesium alloy for performing semi-solid extrusion casting on a forming piece under an atmospheric environment as well as a process. The magnesium alloy comprises the following components in percentage by weight: 5.0 to 8.0 percent of Sn, 0.2 to 0.4 percent of Sc, 1.5 to 1.8 percent of Bi, 0.4 to 0.6 percent of Ti, 0.1 to 0.2 percent of Te, 2.0 to 2.5 percent of In, 0.2 to0.5 percent of Ru, 1.5 to 2.0 percent of Cd and the balance of magnesium. The material provides a material science solution which is different from the traditional solution of adding Ca, Be, Zn and rare earth elements for flame resistance; furthermore, the alloy has excellent casting property and can reach to the mechanical level of the conventional magnesium alloy. The current situation that themechanical property of the existing flame-resistant magnesium alloy is not ideal is completely overcome.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a magnesium alloy. Background technique [0002] Magnesium is a very light metal with a specific gravity about 2 / 3 of that of aluminum and 1 / 4 of that of iron. Magnesium alloys based on magnesium and added with other elements have a series of excellent mechanical properties, physical properties and chemical properties, such as: low density, high specific strength, large elastic modulus, good shock absorption, and shock load capacity ratio The aluminum alloy is large and has good corrosion resistance to organic substances and alkalis. In addition, magnesium alloy also has the advantages of good electromagnetic shielding, machinability, low processing cost, processing energy is only 70% of aluminum alloy, and easy recycling. Therefore, as the lightest engineering metal material, magnesium alloy is known as the green engineering material in the 21st century. Not only has a wide ra...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C1/02B22D18/02
CPCB22D18/02C22C1/02C22C23/00
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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