A kind of automobile swing arm and preparation method thereof
A technology of automobile swing arm and microspheres, applied in the direction of manufacturing tools, vehicle parts, heat treatment equipment, etc., can solve the problems of vehicle comfort, increase the impact load of the suspension system, weak tensile strength, etc. Density and overall properties, effects of improved impact resistance, improved strength and toughness
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1～5
[0031]The automobile swing arms of Examples 1-5 are made of aluminum alloy, and the aluminum alloy includes the following components in mass percent: 0.1-0.3% Si, 2.0-2.6% Cu, 0.3-0.6% Mn, 1.8-2.3% Mg, 0~0.04% Cr, 7.6~8.4% Zn, 0.06~0.15% Ti, 0.05~0.25Zr, 5.5~9.3% AlN microspheres, 1.5~2.1% nano AlN, 0.15~0.35Fe, 0.12~0.35% RE, The amount is Al.
[0032] AlN microspheres include an aluminum core and an AlN film layer at least partially covering the outer layer of the aluminum core. The AlN microspheres include AlN microspheres I and AlN microspheres II. The thickness of AlN microsphere II is 50-100nm, the mass percentage in aluminum alloy is 1.8-3.3%; the particle size of AlN microsphere II is 5-7μm, the thickness of AlN film is 200-300nm, and the mass percentage in aluminum alloy is respectively 3.7 to 6.0%.
[0033] RE is a mixed nano-powder of one or more of Nd, Gd, Dy, Ho, preferably a composite nano-powder of Nd, Gd, Ho, and the mass percentages of Nd, Gd, and Ho in the ...
Embodiment 6
[0040] The preparation method of automobile swing arm in the present embodiment comprises the following steps,
[0041] (1), prepare raw material according to the raw material and proportioning in embodiment 3, carry out nitriding to Al powder in nitrogen, form AlN film layer on the surface of Al powder, by controlling the degree of nitriding, make AlN film with different thickness layer of AlN microspheres, and then ball mill the AlN microspheres to partially break the AlN film layer;
[0042] (2) Heat and smelt the aluminum alloy metal raw material into an alloy melt, add AlN microspheres and nano-AlN, stir at 500rmp for 5.5min, pour it into a mold, and ultrasonically treat it for 3min under heat preservation conditions, then cool to room temperature , and then conduct heat treatment, first raise the temperature to 430°C, hold for 2.5 hours, then raise the temperature to 520°C, hold for 3 hours, and then quickly drop to room temperature at a speed of 35°C / min to obtain the a...
Embodiment 7
[0044] The preparation method of automobile swing arm in the present embodiment comprises the following steps,
[0045] (1), prepare raw material according to the raw material and proportioning in embodiment 3, carry out nitriding to Al powder in nitrogen, form AlN film layer on the surface of Al powder, by controlling the degree of nitriding, make AlN film with different thickness layer of AlN microspheres, and then ball mill the AlN microspheres to partially break the AlN film layer;
[0046] (2) Heat and smelt the aluminum alloy metal raw material into an alloy melt, add AlN microspheres and nano-AlN, stir at 530rmp for 5.0min, pour it into a mold, ultrasonically treat it for 4min under heat preservation conditions, and then cool to room temperature , and then conduct heat treatment, first raise the temperature to 440°C, hold for 2.0h, then raise the temperature to 550°C, hold for 2.5h, and then rapidly drop to room temperature at a speed of 40°C / min to obtain the automobil...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More