Die-casting aluminium alloy

A technology for casting aluminum alloys and alloys, which is applied in the field of aluminum alloys for die-casting, can solve the problems of limited mobility of aluminum alloys, high cost, waste of resources and energy, etc.

A technology for casting aluminum alloys and alloys, which is applied in the field of aluminum alloys for die-casting, can solve the problems of limited mobility of aluminum alloys, high cost, waste of resources and energy, etc.

CN1607261AInactive Publication Date: 2005-04-20ALLOY MATERIALS LAB
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] According to the composition range in Table 1, pure aluminum, pure silicon, pure copper and aluminum-nickel master alloy are melted in an electric crucible furnace, degassed and slag removed, and die-casted by a die-casting machine into a casting with a thickness of 0.8mm and an area of ​​200×300mm. sliced ​​into 20 rectangular pieces of 20mm×150mm, and then turned into 20 sheet-like tensile test pieces, each of which has a gage of 12.5mm in width and 50mm in length. The average mechanical properties obtained are as follows shown in the table.

[0034] silicon

[0035] Note: use weight percentage (wt.%)

Embodiment 2

[0037] According to the composition range in Table 2 and the melting and casting procedure in Example 1, die-cast into a cast piece with a thickness of 0.8mm and an area of ​​200×300mm. After slicing, it is divided into 20 rectangular pieces of 20mm×150mm, and then turned into a sheet-shaped tensile test piece 20 Each test piece has a gage with a width of 12.5mm and a length of 50mm. The average values ​​of the obtained mechanical properties are shown in the table.

[0038] silicon

[0039] Note: use weight percentage (wt.%)

Embodiment 3

[0041] According to the composition range in Table 3 and the melting and casting procedure in Example 1, die-cast into a cast piece with a thickness of 0.8mm and an area of ​​200×300mm. After slicing, it is divided into 20 rectangular pieces of 20mm×150mm, and then turned into a sheet-shaped tensile test piece 20 Each test piece has a gage with a width of 12.5mm and a length of 50mm. The average values ​​of the obtained mechanical properties are shown in the table.

[0042] silicon

[0043] Note: use weight percentage (wt.%)

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Abstract

A aluminium alloy for press casting very thin parts (0.7-1.2 mm) is composed of (by weight) 10.0-14.0 % of silicon, 2.5-4.5 % of copper, 0-2.0 % of nickel, 0-1.5 % of manganese, the total content of nickel and manganese keeps in 0.5-2.0 %. The alloy castability (mold filling ability) increases by more than 20 %. Under high pressure press casting, 0.7-1.2 mm wall casting can be made and can be used as casing of 3C products, also the cost is reduced by more than 20-30 % compared with magnesium alloy.

Description

technical field [0001] The present invention relates to aluminum alloy for die-casting, in particular to an aluminum alloy for die-casting extremely thin parts. Background technique [0002] In recent years, the 3C industry has developed rapidly. Among them, the casings of notebook computers, digital cameras, and communication mobile phones all require the characteristics of lightness, thinness, and anti-electromagnetic radiation. For this reason, magnesium alloys and aluminum alloys are widely used to make molded parts through high-pressure die-casting. . In the past two years, the trend has been to move towards magnesium alloys, because castings of the same thickness are about 30% lighter than aluminum alloys. Another factor is that the fluidity of aluminum alloy components in various countries in the world is relatively limited. Even under high-pressure die-casting, it is difficult to achieve a thickness of less than 1mm, which cannot meet the requirements of some casing...

Claims

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Application Information

Patent Timeline
20 Apr 2005
Publication
CN1607261A
IPC
C22C21/02
Inventors
方魁燦