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Aluminum alloy material suitable for vacuum low-speed die-casting method

An aluminum alloy material and casting alloy technology, applied in the field of pressure casting, can solve the problems of easy occurrence of mold sticking, low tensile elongation, low element content, etc., and achieve no production quality problems, good corrosion resistance, and good flow performance. Effect

Inactive Publication Date: 2018-07-06
山东弗泽瑞金属科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the mechanical properties of conventional die castings, especially the tensile elongation, are all lower than 1%, and high temperature solution heat treatment cannot be performed, so that the mechanical properties of cast aluminum alloy materials cannot be fully utilized.
In addition, due to the traditional die-casting process, the metal melt scours the mold at high temperature and high speed, and solidifies under high-pressure conditions, which easily causes mold sticking problems, resulting in production interruption
Therefore, traditional aluminum alloys often contain strengthening phase alloying elements (Mg, Cu, Zn, etc.) Patent CN107245612A, titled "High Performance AlSiMgCu Casting Alloy", discloses a die-casting alloy containing 8.5-9% by weight of silicon (Si), but the content of Fe and Mn elements in this die-casting alloy is relatively low, and die-sticking is prone to occur in die-casting production Phenomenon, not suitable for mass production

Method used

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  • Aluminum alloy material suitable for vacuum low-speed die-casting method
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Examples

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Effect test

Embodiment 1

[0040] The aluminum alloy material suitable for the vacuum low-speed die-casting method of Example 1 is a cast aluminum alloy with high thermal conductivity, and its components are respectively by weight percentage: silicon 8.4%, copper 1.45%, magnesium 0.45%, iron 0.13 %, manganese 0.32%, chromium 0.02%, strontium 0.018%, titanium 0.083%, zinc 0.02%, impurities less than or equal to 0.1%, the balance is aluminum, and Fe+2Mn+3Cr=0.79.

[0041] The production method and heat treatment method of the high thermal conductivity cast aluminum alloy of embodiment 1 are as follows:

[0042] (1) Add aluminum ingots in the melting furnace according to the mass percentage, heat to 650°C, add 0.5% slag removal agent based on the mass of the aluminum ingots, stir for 20 minutes, remove slag, and continue to heat the aluminum liquid after deslagging to 725°C , add other components except aluminum into the melting furnace according to the percentage, and stir the alloy liquid for 3 minutes; ...

Embodiment 2

[0050] The aluminum alloy material suitable for the vacuum low-speed die-casting method of Example 2 is a cast aluminum alloy with high thermal conductivity, and its components are respectively by weight percentage: 10.8% of silicon, 0.85% of copper, 0.35% of magnesium, and 0.45% of iron. %, manganese 0.02%, chromium 0.02%, strontium 0.023%, titanium 0.12%, zinc 0.02%, impurities less than or equal to 0.1%, the balance is aluminum, and Fe+2Mn+3Cr=0.51.

[0051] The production method and heat treatment method of the high thermal conductivity cast aluminum alloy of embodiment 2 are as follows:

[0052] (1) Add aluminum ingots in the melting furnace according to the mass percentage, heat to 650°C, add 0.5% slag remover based on the mass of the aluminum ingots, stir for 20 minutes, remove slag, and continue to heat the aluminum liquid after deslagging to 715°C , add other components except aluminum into the melting furnace according to the percentage, and stir the alloy liquid for...

Embodiment 3

[0060] The aluminum alloy material suitable for the vacuum low-speed die-casting method of Example 3 is a cast aluminum alloy with high thermal conductivity, and its components are respectively by weight percentage: 6.7% of silicon, 0.45% of copper, 0.51% of magnesium, and 0.13% of iron. %, manganese 0.45%, chromium 0.02%, strontium 0.023%, titanium 0.12%, zinc 0.02%, impurities less than or equal to 0.1%, the balance is aluminum, and Fe+2Mn+3Cr=1.09.

[0061] The production method and heat treatment method of the high thermal conductivity cast aluminum alloy of embodiment 3 are as follows:

[0062] (1) Add aluminum ingots in the melting furnace according to the mass percentage, heat to 650°C, add 0.5% slag remover based on the mass of the aluminum ingots, stir for 20 minutes, remove slag, and continue to heat the aluminum liquid after deslagging to 715°C , add other components except aluminum into the melting furnace according to the percentage, and stir the alloy liquid for ...

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Abstract

The invention relates to an aluminum alloy material suitable for a vacuum low-speed die-casting method. The aluminum alloy material comprises the following components of, by weight, 4.5-12.5% of silicon (Si), 0.2-2.5% of copper (Cu), 0.15-0.55% magnesium (Mg), less than 0.8% of iron (Fe), less than 0.5 % of manganese (Mn), less than 0.3% of chromium (Cr), and 0.05-0.2% of titanium (Ti); and the aluminum alloy material comprises, by weight, iron, manganese and chromium satisfying the formula that the sum of Fe, 2Mn and 3Cr is greater than 0.5% and smaller than 1.2%, no more than 0.2% of zirconium, no more than 0.15% of vanadium, no more than 0. 15 % of niobium, no more than 0.10 % of one or more of strontium, sodium and antimony, other elements with the weight of each element being less than 0.04% and the total weight being less than 0.12%, and the balance aluminum.

Description

technical field [0001] The invention relates to the technical field of die casting, in particular to an aluminum alloy material suitable for a vacuum low speed die casting method. Background technique [0002] Aluminum alloys are used in a wide range of applications, such as in the automotive and aerospace industries, due to their high performance-to-weight ratio and good corrosion resistance. At present, there are a variety of aluminum alloy materials, especially cast aluminum alloys, which have been widely used in automobile parts due to their complex shape and excellent mechanical properties. Among them, due to the high production efficiency and low cost of high-pressure die-casting, high-pressure die-casting has become an important forming method for casting aluminum alloys. [0003] In the traditional high-pressure die-casting process, molten metal is filled into the cavity in a high-speed jet state. According to the recommendation of the North American Die Casting Ass...

Claims

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Application Information

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IPC IPC(8): C22C21/04C22C1/02C22C1/06B22D17/14C22F1/043
CPCB22D17/14C22C1/026C22C1/06C22C21/04C22F1/002C22F1/043
Inventor 杨辛
Owner 山东弗泽瑞金属科技有限公司
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