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Solidification contraction-free high-hardness casting magnesium alloy and process thereof

A technology of solidification shrinkage and high hardness, which is applied in the field of alloys to achieve the effect of less solidification holes, uniform composition and excellent solidification characteristics

Inactive Publication Date: 2018-12-25
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But unfortunately, there are no new products based on this design concept in the field of magnesium alloys at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A magnesium alloy for high hardness casting without solidification shrinkage and its technology. In terms of weight percentage, the composition of the alloy is Li:0.6wt.%, Sb:2.0wt.%, In:5.0wt.%, Bi:4.0wt.%, Pb:1.0wt.%, Ge:3.0wt.% , Si: 1.2wt.%, Sn: 5.0wt.%, and the balance is magnesium. The above-mentioned magnesium alloy for casting with high hardness without solidification and shrinkage characteristics and its process includes the following steps: adding the raw materials in the above ratio into an induction furnace under an argon environment, and using a graphite crucible; Minutes, stir evenly by high-frequency induction furnace electromagnetically; after stirring evenly, keep warm at 700 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 20-30mm, and uses water cooling to cool down. Heat the obtained ingot to 650-700 degrees under the protection of argon and keep it warm for 10 minutes; then pour the melt into the ...

Embodiment 2

[0020] A magnesium alloy for high hardness casting without solidification shrinkage and its technology. In terms of weight percentage, the composition of the alloy is Li:0.8wt.%, Sb:3.0wt.%, In:8.0wt.%, Bi:6.0wt.%, Pb:2.0wt.%, Ge:5.0wt.% , Si: 1.5wt.%, Sn: 8.0wt.%, and the balance is magnesium. The above-mentioned magnesium alloy for casting with high hardness without solidification and shrinkage characteristics and its process include the following steps: adding the raw materials in the above ratio into an induction furnace under an argon environment, and using a graphite crucible; Minutes, stir evenly by high-frequency induction furnace electromagnetically; after stirring evenly, keep warm at 700 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 20-30mm, and uses water cooling to cool down. The obtained ingot is heated to 650-700 degrees under the protection of argon and kept for 10 minutes; then the melt is poured into the...

Embodiment 3

[0023] A magnesium alloy for high hardness casting without solidification shrinkage and its technology. In terms of weight percentage, the composition of the alloy is Li:0.7wt.%, Sb:2.5wt.%, In:5.2wt.%, Bi:4.8wt.%, Pb:1.5wt.%, Ge:3.2wt.% , Si: 1.3wt.%, Sn: 5.8wt.%, and the balance is magnesium. The above-mentioned magnesium alloy for casting with high hardness without solidification and shrinkage characteristics and its process include the following steps: adding the raw materials in the above ratio into an induction furnace under an argon environment, and using a graphite crucible; Minutes, stir evenly by high-frequency induction furnace electromagnetically; after stirring evenly, keep warm at 700 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 20-30mm, and uses water cooling to cool down. The obtained ingot is heated to 650-700 degrees under the protection of argon and kept for 10 minutes; then the melt is poured into the...

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Abstract

The invention discloses a solidification contraction-free high-hardness casting magnesium alloy and a process thereof. The alloy comprises the following components in percentage by weight: 0.6-0.8wt.%of Li, 2.0-3.0wt.% of Sb, 5.0-8.0wt.% of In, 4.0-6.0wt.% of Bi, 1.0-2.0wt.% of Pb, 3.0-5.0wt.% of Ge, 1.2-1.5wt.% of Si, 5.0-8.0wt.% of Sn and the balance of magnesium. By adopting the magnesium alloy, casting defects are effectively eliminated, formation of casting pores and looseness is reduced, and excellent mechanical properties of a cast alloy part are achieved. Therefore, the invention provides a lightening solving scheme of a magnesium alloy substitution product, and updating and industry updating requirements of novel materials in China are effectively promoted in the implementation and industrialization process.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a magnesium alloy. Background technique [0002] Magnesium is one of the most abundant light metal elements on the earth, and it can be described as inexhaustible. Magnesium alloy is an alloy composed of magnesium and other elements. Its characteristics are: low density, high specific strength, large elastic modulus, good shock absorption, greater impact load capacity than aluminum alloy, and good corrosion resistance. The specific gravity of magnesium alloy is the lightest among all structural alloys. The specific strength of magnesium alloy is obviously higher than that of aluminum alloy and steel, and the specific stiffness is equivalent to that of aluminum alloy and steel. In the elastic range, when the magnesium alloy is subjected to an impact load, the energy absorbed is greater than that of the aluminum alloy, so the magnesium alloy has good shock resistance and noise red...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C1/02C22F1/06C22F1/02
CPCC22C1/02C22C23/00C22F1/02C22F1/06
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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