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Ultrahigh-strength cast aluminum alloy hub material ZL350/500 and manufacturing technology thereof

A technology for casting aluminum alloy and manufacturing process, applied in the field of new aluminum alloy materials and casting aluminum alloy, can solve problems such as low material strength, and achieve the effect of increased strength, wear resistance, and increased fluidity

Inactive Publication Date: 2021-11-30
西安鼎鑫科技新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above two patents have improved the strength and toughness of aluminum alloy materials, and realized the organic combination of strength, toughness and corrosion resistance, but the patent application still has the defect of low material strength

Method used

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  • Ultrahigh-strength cast aluminum alloy hub material ZL350/500 and manufacturing technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Ultra-high-strength cast aluminum alloy ZL350 / 500, its composition by weight percentage is: Si: 12.5%; Fe: 0.3%; Cu: 1.9%; Mn: 0.25%; Mg: 1.7%; Zr: 0.01%; Zn: 0.18 %; Ti: 0.55%; Ni≤0.05; the balance is aluminum.

[0057] Its manufacturing method comprises the following steps:

[0058] (1) The tilting reflective melting furnace melts aluminum, and the NOX is lower than 60ppm;

[0059] (2) When part of the charge is melted, add 12.5% ​​silicon, 0.25% manganese and 1.9% copper to the melt at 725°C to 740°C for smelting;

[0060] (3) When the temperature rises to 730°C to 750°C, sprinkle powdery solvent, separate slag and metal, and carry out slag removal. After removing slag, add 1.7% magnesium and 0.18% zinc for smelting;

[0061] (4) After the temperature rises to 740°C to 760°C, add 0.55% titanium for smelting;

[0062] (5) After the various ingredients are fully dissolved together, start the electromagnetic stirrer to stir, the number of stirring is not less than 4 ...

Embodiment 2

[0073] Ultra-high-strength cast aluminum alloy ZL350 / 500, its composition by weight percentage is: Si: 10%; Fe: 0.25%; Cu: 2.8%; Mn: 0.3%; Mg: 2.1%; Zr: 0.05%; Zn: 0.3 %; Ti: 0.2%; Ni≤0.05; the balance is aluminum.

[0074] Its manufacturing method comprises the following steps:

[0075] (1) The tilting reflective melting furnace melts aluminum, and the NOX is lower than 60ppm;

[0076] (2) When part of the charge is melted, add 10% silicon, 0.3% manganese and 2.8% copper to the melt at 720°C to 740°C for smelting;

[0077] (3) When the temperature rises to 740°C to 750°C, sprinkle powdery solvent, separate slag and metal, and carry out slag removal. After removing slag, add 2.1% magnesium and 0.30% zinc for smelting;

[0078] (4) After the temperature rises to 750°C to 760°C, add 0.2% titanium for smelting;

[0079] (5) After the various ingredients are fully dissolved together, start the electromagnetic stirrer to stir, the number of stirring is not less than 4 times, and...

Embodiment 3

[0090] Ultra-high-strength cast aluminum alloy ZL350 / 500, its composition by weight percentage is: Si: 7%; Fe: 0.45%; Cu: 3.2%; Mn: 0.45%; Mg: 2.5%; Zr: 0.03%; Zn: 0.15 %; Ti: 0.35%; Ni≤0.05; the balance is aluminum.

[0091] Its manufacturing method comprises the following steps:

[0092] (1) The tilting reflective melting furnace melts aluminum, and the NOX is lower than 60ppm;

[0093] (2) When part of the charge is melted, add 7% silicon, 0.45% manganese and 3.2% copper to the melt at 730°C to 740°C for smelting;

[0094] (3) When the temperature rises to 740°C to 750°C, sprinkle powdery solvent, separate slag and metal, carry out slag removal, add magnesium 2.5% and zinc 0.15% after slag removal for smelting;

[0095] (4) After the temperature rises to 750°C to 760°C, add 0.35% titanium for smelting;

[0096] (5) After the various ingredients are fully dissolved together, start the electromagnetic stirrer to stir, the number of stirring is not less than 4 times, and ca...

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Abstract

The invention relates to an ultrahigh-strength cast aluminum alloy hub material ZL350 / 500. The ultrahigh-strength cast aluminum alloy hub material ZL350 / 500 comprises the following components: 7%-12.5% of Si, 0.25%-0.45% of Fe, 1.9%-3.2% of Cu, 0.25%-0.55% of Mn, 1.7%-2.8% of Mg, 0.01%-0.05% of Zr, 0.15%-0.30% of Zn, 0.10%-0.55% of Ti, less than or equal to 0.05% of Ni, and the balance aluminum. A manufacturing technology comprises the following steps: (1) melting the aluminum in a tipping-type reflection smelting furnace; (2) adding the silicon, the manganese and the copper for smelting; (3) adding the magnesium and the zinc for smelting; (4) adding the titanium for smelting; (5) conducting electromagnetic stirring for degassing and deslagging, and blowing gas at the bottom of the furnace for refining; (6) adding the modificator Zr for modification treatment; (7) conducting ceramic filtering and pouring; (8) applying forging pressure to refine grains; (9) subjecting a casting to homogenizing treatment; and (10) conducting solid solution and artificial aging treatment. After the ultrahigh-strength cast aluminum alloy is subjected to homogenizing, solid solution and artificial aging treatment, the tensile strength of the ultrahigh-strength cast aluminum alloy at the room temperature is 350-500 MPa, the yield strength of the ultrahigh-strength cast aluminum alloy is 320-380 MPa, and the elongation of the ultrahigh-strength cast aluminum alloy is larger than 7%.

Description

technical field [0001] The invention belongs to the technical field of cast aluminum alloys, and relates to a cast aluminum alloy material and a manufacturing process, in particular to an ultra-high-strength cast aluminum alloy material ZL350 / 500 and its manufacturing process, which are used to manufacture ultra-high-strength aluminum alloys for vehicles The wheel hub is also suitable for the field of using a large number of ultra-high-strength, lightweight aluminum alloy new materials. Background technique [0002] With the popularity of automobiles in China, the huge number of automobiles and production volumes make the requirements for lightweight automobiles more and more urgent. The wheel hub is a key component that bears the full weight of the car and rotates at high speed, which puts forward stricter requirements for the new materials used in it. At present, most high-end commercial vehicles in the world use aluminum alloy materials to make wheels. For example, Japan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/04C22C1/02C22C1/06C22F1/043
CPCC22C21/04C22C1/026C22C1/06C22F1/043
Inventor 薛元良
Owner 西安鼎鑫科技新材料有限公司
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