Unlock instant, AI-driven research and patent intelligence for your innovation.

Evaporative pattern casting magnesium alloy and smelting method thereof

A technology of lost foam casting and magnesium alloys, which is applied in the fields of metal materials and metallurgy, can solve problems such as reports on lost foam casting magnesium alloy materials, etc., and achieve broad commercial application prospects, broad market application prospects, and good refinement. Effect

Inactive Publication Date: 2005-10-26
SHANGHAI AIERSI LIGHT ALLOY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on lost foam casting magnesium alloys is focused on mold filling [Zili Liu, Jingyu Hu, Qudong Wang, etc. Evaluation of Vacuum on Mold Filling in Magnesium EPC Process. Journal of Materials Processing Technology. 2002, 120 / 1- 3:94-100], there is no report on lost foam casting magnesium alloy materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Alloy composition (weight percent): 7.5% Al, 0.25% Zn, 0.15% Mn, 1.0% RE (Ce-rich mixed rare earth), 0.05% Ti, 0.01% C, limited impurity elements Si≤0.01%, Fe≤0.004%, Cu≤0.015%, Ni≤0.002%, and the rest is Mg.

[0017] Configure the alloy according to the above composition, in CO 2 +SF 6 Under gas protection, add 8204 grams of industrial pure magnesium to the resistance crucible furnace, and then sprinkle a small amount of covering agent for magnesium alloy melting in the furnace. After the alloy is completely melted, add 521 grams of industrial pure aluminum, 25 grams of industrial pure zinc, A1 150 grams of -10Mn alloy, 1000 grams of Mg-10RE alloy, 100 grams of A1-5Ti-C alloy, fully stir the alloy liquid after dissolution, continue to heat up to 730 ° C with refining agent for 10 minutes, remove the surface scum, and then keep warm Stand still for 20 minutes, when the alloy temperature reaches 740°C, it can be poured with a ladle. The normal temperature tensile stre...

Embodiment 2

[0019] Alloy composition (weight percent): 9% Al, 0.35% Zn, 0.45% Mn, 0.8% RE (Ce-rich mixed rare earth), 0.1% Ti, 0.02% C, limited impurity elements Si≤0.01%, Fe≤0.004%, Cu≤0.015%, Ni≤0.002%, and the rest is Mg.

[0020] Configure the alloy according to the above composition, in CO 2 +SF 6 Under gas protection, add 8928 grams of industrial pure magnesium to the resistance crucible furnace, and then sprinkle a small amount of covering agent for magnesium alloy melting in the furnace. After the alloy is completely melted, add 307 grams of industrial pure aluminum, 35 grams of industrial pure zinc, Al 450 grams of -10Mn alloy, 80 grams of mixed RE alloy, 200 grams of Al-5Ti-C alloy, fully stir the alloy liquid after dissolution, continue to heat up to 730 ° C with refining agent for 10 minutes, remove the surface scum, and then keep it still After 20 minutes, when the alloy temperature reaches 730°C, it can be poured with a ladle. The normal temperature tensile strength, yiel...

Embodiment 3

[0022] Alloy composition (weight percent): 10% Al, 0.45% Zn, 0.3% Mn, 0.6% RE (Ce-rich mixed rare earth), 0.2% Ti, 0.03% C, limited impurity elements Si≤0.01%, Fe≤0.004%, Cu≤0.015%, Ni≤0.002%, and the rest is Mg.

[0023] Configure the alloy according to the above composition, in CO 2 +SF 6Under gas protection, add 8302 grams of industrial pure magnesium to the resistance crucible furnace, and then sprinkle a small amount of covering agent for magnesium alloy melting in the furnace. After the alloy is completely melted, add 403 grams of industrial pure aluminum, 45 grams of industrial pure zinc, Al 300 grams of -10Mn alloy, 600 grams of Mg-10RE alloy, 300 grams of Al-5Ti-C alloy, and 50 grams of Al-10Ti alloy; Remove the scum on the surface, then keep it warm for 20 minutes, and when the temperature of the alloy reaches 735°C, it can be poured with a ladle. The normal temperature tensile strength, yield strength and elongation of the magnesium alloy of this example are 168M...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lattice constantaaaaaaaaaa
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a evaporative pattern casting special-purpose magnesium alloy and its smelting method. It is characterized by that in the formula of magnesium alloy the content of zinc is reduced, the contents of Al and Mn elements are properly regulated, and the mixed rare earth RE richly containing Ce and elements of Ti and C are added so as to fine the crystal grains of evaporative pattern casting magnesium alloy, reduce its dispersed shrinkage defect and improve its casting property and mechanical property.

Description

Technical field: [0001] The invention relates to a lost foam casting magnesium alloy and a melting method thereof, belonging to the technical field of metal materials and metallurgy. Background technique: [0002] Magnesium alloy is the lightest structural material in practical application. It has the advantages of light specific gravity, high specific strength, high specific stiffness, good damping performance and good cutting performance. Magnesium alloys are increasingly used in industries such as automobiles, aerospace, and telecommunications. Casting is the main forming method for magnesium alloys. At present, magnesium alloys are mainly cast by die casting and sand mold with binder. Lost foam casting (LFC or EPC for short) is currently considered to be an economical and effective new green casting process that replaces traditional casting processes to produce high-quality precision molding castings. Foundry Technology", "Green Engineering in Foundry". The basic pri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22D21/04C22C23/02
Inventor 吴国华丁文江
Owner SHANGHAI AIERSI LIGHT ALLOY