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Die-casting aluminum alloy

A technology of casting aluminum alloy and alloy liquid, applied in the field of die-casting aluminum alloy, can solve the problems of poor anodic oxidation performance and poor corrosion resistance, etc.

Inactive Publication Date: 2016-12-07
QINGYUAN SHUNBO ALUMINUM ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the die-casting aluminum alloys in the prior art have defects such as poor anodic oxidation performance and poor corrosion resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0139] A die-casting aluminum alloy, by weight percentage, containing the following components:

[0140] Si: 9.5-11.0%;

[0141] Cu: 0.05-0.08%;

[0142] Mg: 3.3-3.5%;

[0143] Mn: 0.3-0.5%;

[0144] Zn: 0.1-0.2%;

[0145] Fe: 2.8-3.0%;

[0146] Pb: 0-0.03%;

[0147] Ti:0.03-0.18%;

[0148] Ni: 0-0.03%;

[0149] Cr: 0-0.05%;

[0150] Sn: 0-0.03%;

[0151] and the remaining amount of Al;

[0152] Al is the main body, and the rest constitute additives.

[0153] The die-casting aluminum alloy is prepared by the following process:

[0154] A. Pre-configure additives according to the proportion of ingredients. The ratio of the additives is subject to the above ratio.

[0155] B. Preheat the blast furnace in advance. When the furnace temperature in the blast furnace reaches 300-500 degrees Celsius, start adding pure aluminum raw materials, increase the furnace temperature in the blast furnace, and make the molten aluminum temperature in the blast furnace reach 650-750 d...

Embodiment 2

[0181] A die-casting aluminum alloy, other features are the same as in Example 1, the difference is: by weight percentage, it contains the following components:

[0182] Si: 10-10.5%;

[0183] Cu: 0.06-0.08%;

[0184] Mg: 3.4-3.5%;

[0185] Mn: 0.35-0.45%;

[0186] Zn: 0.12-0.16%;

[0187] Fe: 2.85-2.95%;

[0188] Pb: 0-0.02%;

[0189] Ti:0.06-0.18%;

[0190] Ni: 0-0.03%;

[0191] Cr: 0-0.05%;

[0192] Sn: 0-0.03%;

[0193] and the remaining amount of Al.

[0194] With the die-casting aluminum alloy equipped with this equipment, when it is prepared in large quantities, the performance of the die-casting aluminum alloy between different batches is good and stable.

[0195] The die-casting aluminum alloy of the present invention has a dense structure, fine crystals, no bright spots, no shrinkage cavities, and no molten slag. Good tensile strength and good corrosion resistance. The die-casting aluminum alloy has good anodic oxidation performance.

[0196] Using the die...

Embodiment 3

[0199] A die-casting aluminum alloy, the other characteristics of which are the same as those in Example 1, except that the die-casting aluminum alloy contains the following components in weight percentage:

[0200] Si: 9.8-10.5%;

[0201] Cu: 0.06-0.07%;

[0202] Mg: 3.35-3.4%;

[0203] Mn: 0.35-0.46%;

[0204] Zn: 0.12-0.18%;

[0205] Fe: 2.95-3.0%;

[0206] Pb: 0-0.03%;

[0207] Ti: 0.07-0.15%;

[0208] Ni: 0-0.03%;

[0209] Cr: 0-0.05%;

[0210] Sn: 0-0.03%;

[0211] and the remaining amount of Al;

[0212] Al is the main body, and the rest constitute additives.

[0213] The die-casting aluminum alloy of the present invention has a dense structure, fine crystals, no bright spots, no shrinkage cavities, and no molten slag. Good tensile strength and good corrosion resistance. The die-casting aluminum alloy has good anodic oxidation performance.

[0214] Using the die-casting aluminum alloy as the raw material of the middle frame of the mobile phone, the outer su...

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Abstract

A die-casting aluminum alloy comprises the following components in percentages by weight: 9.5-11.0% of Si, 0.05-0.08% of Cu, 3.3-3.5% of Mg, 0.3-0.5% of Mn, 0.1-0.2% of Zn, 2.8-3.0% of Fe, 0-0.03% of Pb, 0.03-0.18% of Ti, 0-0.03% of Ni, 0-0.05% of Cr, 0-0.03% of Sn and the balance of Al. Al is the main body, and the rest components are addition materials. The die-casting aluminum alloy is prepared by a method comprising step A, step B, step C, step D, step E, step F, step G, step H, step I, step J, step K, step L, step M, step N, step O and step P. The die-casting aluminum alloy has the characteristics of good anodic oxidation property and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a die-casting aluminum alloy. Background technique [0002] Aluminum alloy is one of the most important raw materials in the industrial field. In modern society, die-casting aluminum alloy parts are widely used in various industries. Aluminum alloy die-casting products are mainly used in electronics, automobiles, motors, home appliances and some communication industries. [0003] Die-cast aluminum alloy has the characteristics of wide die-casting range, high dimensional accuracy of die-casting parts, low surface roughness, high production efficiency, high metal utilization rate, high casting strength and surface hardness, etc. However, the die-casting aluminum alloys in the prior art have defects such as poor anodic oxidation performance and poor corrosion resistance. [0004] Therefore, aiming at the deficiencies of the prior art, it is necessary to provide a die-casti...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C1/06C22C1/02
CPCC22C21/02C22C1/026C22C1/06
Inventor 王启王赟陈泰山
Owner QINGYUAN SHUNBO ALUMINUM ALLOY
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