CN105483470A

CN105483470A - High-strength aluminum alloy wheel

Info

Publication number: CN105483470A
Application number: CN201510935983.2A
Authority: CN
Inventors: 邱立宝; 王建强; 付亚楠; 刘庆阳
Original assignee: TIANJIN LIZHONG WHEEL CO Ltd
Current assignee: TIANJIN LIZHONG WHEEL CO Ltd
Priority date: 2015-12-15
Filing date: 2015-12-15
Publication date: 2016-04-13

Abstract

The invention relates to a high-strength aluminum alloy wheel. The high-strength aluminum alloy wheel comprises a rim and a spoke, and the rim or the spoke is made of an aluminum alloy material. The aluminum alloy material is prepared from, by weight percentage, 0.9%-1.1% of Si, 1.4%-1.8% of Mg, 0.8%-1.5% of Cu, 0.2%-0.4% of Mn, 0.08%-0.15% of Cr, 0.08%-0.15% of Ti, 0.05%-0.08% of Sr, 0.15%-0.35% of Bi, not larger than 0.4% of Fe, not larger than 0.4% of Pb and the balance Al and inevitable impurities. According to the technical scheme, relative to a standard aluminum alloy A356, the produced aluminum alloy wheel is better in physical property, the surface of the aluminum alloy wheel becomes less in cold shut, cracks are few, the strength of extension reaches 400 MPa, the Rp0.2 reaches 320 MPa, the percentage elongation after fracture is 4.5%, and the Brinell hardness reaches 90 HBW to 110 HBW.

Description

High-strength aluminum alloy wheel

Technical field

The present invention relates to the technical field that wheel is produced, is a kind of high-strength aluminum alloy wheel specifically.

Background technology

Wheel is one of important spare part of automobile, steel wheel and aluminum-alloy wheel can be divided into, because aluminum-alloy wheel is compared with steel wheel, aluminum-alloy wheel has many advantages such as lightweight, intensity large, brake compensation performance is good, precision is high, thermal conductivity is good, automobile fuel consumption is low, and therefore aluminum-alloy wheel has prospect of the application widely.

Aluminum-alloy wheel material conventional at present has cast aluminium alloy A356 and A357 and wrought aluminium alloy 6061 and 6082 etc.; These conventional aluminum alloy materials have a common feature to be exactly have stronger solidity to corrosion, but its tensile strength is generally all no more than 350Mpa, and not as some conventional High Strength Cast Aluminum Alloys are as A319, its tensile strength can reach more than 450Mpa; Also not as some Ultra-High Strength Aluminum Alloys are as 2014 and 7075 etc., its tensile strength can reach more than 500Mpa.

For above-mentioned situation, those skilled in the art have also carried out a series of research, such as, Chinese patent, high-strength aluminum alloy wheel (application number: 201110428959.1, publication number: 102514444A, time of disclosure: on June 27th, 2012) disclose a kind of high-strength aluminum alloy wheel, adopt the mass percentage of Cu element in aluminum alloy materials for being greater than 1%.Again by heat-treating and surface by micro-arc oxidation process this wheel after producing aluminum-alloy wheel workpiece by semi-solid-state shaping method is shaping.

Summary of the invention

The present invention be intended to solve in prior art the associated problem that exist or and prior art distinguish, propose a kind of high-strength aluminum alloy wheel.

Technical scheme of the present invention is as follows:

A kind of high-strength aluminum alloy wheel, comprise wheel rim and spoke, described wheel rim or spoke are formed by aluminum alloy materials manufacture, described aluminum alloy materials is made up of the component of following weight percent: Si:0.9%-1.1%, Mg:1.4%-1.8%, Cu:0.8%-1.5%, Mn:0.2%-0.4%, Cr:0.08%-0.15%, Ti:0.08%-0.15%; Sr:0.05%-0.08%; Bi:0.15%-0.35%; Fe≤0.4%; Pb≤0.4%; Surplus is Al and inevitable impurity.

Preferably, following technical scheme can be selected:

Weight percent≤0.2% of inevitable impurity.

The weight percent of Mg: 1.65%-1.70%.

The weight percent of Cu: 1.35%-1.40%.

Weight percent sum≤0.4% of Fe and Pb.

Preferred further, also can select following technical scheme:

The weight percent of Mg: 1.65%.

The weight percent of Cu: 1.36%.

The weight percent of the weight percent of Fe: 0.15%, Pb: 0.15%.

The beneficial effect of patent of invention:

Technical solution of the present invention is relative to standard Aluminum Alloy A356, and the aluminum-alloy wheel physical properties of producing is better, and its surperficial cold shut, crackle tail off, tensile strength reaches 400MPa, Rp0.2 reaches 320MPa, and elongation after fracture is 4.5%, and Brinell hardness reaches 90-110HBW.

Embodiment.

Embodiment

Below in conjunction with embodiment, embodiments of the present invention are described.

A kind of high-strength aluminum alloy wheel, comprise wheel rim and spoke, described wheel rim or spoke are formed by aluminum alloy materials manufacture, described aluminum alloy materials is made up of the component of following weight percent: Si:0.9%-1.1%, Mg:1.4%-1.8%, Cu:0.8%-1.5%, Mn:0.2%-0.4%, Cr:0.08%-0.15%, Ti:0.08%-0.15%; Sr:0.05%-0.08%; Bi:0.15%-0.35%; Fe≤0.4%; Pb≤0.4%; Inevitable impurity≤0.2%; Surplus is Al.

As working condition allows, can limit the content of constituent part further: the weight percent of Mg: 1.65%-1.70%; The weight percent of Cu: 1.35%-1.40%; Weight percent sum≤0.4% of Fe and Pb.

Result display is realized according to existing, weight percent as Mg: 1.65%, the weight percent of the weight percent of the weight percent of Cu: 1.36%, Fe: 0.15%, Pb: when 0.15%, the aluminum-alloy wheel physical properties produced is best, its surface does not almost have cold shut or crackle, and tensile strength reaches 430MPa, and Rp0.2 reaches 350MPa, elongation after fracture is 4.9%, and Brinell hardness reaches 110HBW.

The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention with preferred embodiment openly as above, but, and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, certainly the technology contents of announcement can be utilized to make a little change or modification, become the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all belong in the scope of technical solution of the present invention.

Claims

1. a high-strength aluminum alloy wheel, comprise wheel rim and spoke, described wheel rim or spoke are formed by aluminum alloy materials manufacture, it is characterized in that: described aluminum alloy materials is made up of the component of following weight percent: Si:0.9%-1.1%, Mg:1.4%-1.8%, Cu:0.8%-1.5%, Mn:0.2%-0.4%, Cr:0.08%-0.15%, Ti:0.08%-0.15%; Sr:0.05%-0.08%; Bi:0.15%-0.35%; Fe≤0.4%; Pb≤0.4%; Surplus is Al and inevitable impurity.

2. high-strength aluminum alloy wheel according to claim 1, is characterized in that: inevitably weight percent≤0.2% of impurity.

3. high-strength aluminum alloy wheel according to claim 1, is characterized in that: the weight percent of Mg: 1.65%-1.70%.

4. high-strength aluminum alloy wheel according to claim 1, is characterized in that: the weight percent of Cu: 1.35%-1.40%.

5. high-strength aluminum alloy wheel according to claim 1, is characterized in that: weight percent sum≤0.4% of Fe and Pb.

6. the high-strength aluminum alloy wheel according to claim 1 or 3, is characterized in that: the weight percent of Mg: 1.65%.

7. the high-strength aluminum alloy wheel according to claim 1 or 4, is characterized in that: the weight percent of Cu: 1.36%.

8. high-strength aluminum alloy wheel according to claim 1 or 5, is characterized in that: the weight percent of the weight percent of Fe: 0.15%, Pb: 0.15%.