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High-performance aluminum alloy profiles for automobile chassis

A technology for aluminum alloy profiles and automobile chassis, which is applied in the field of aluminum alloy materials, can solve the problems that the tensile strength and yield strength of aluminum alloys cannot meet the requirements of high safety performance automobiles, etc., and achieve the effects of low cost, high safety and simple components.

Active Publication Date: 2018-07-13
GUANGDONG WEIYE ALUMINUM FACTORY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem to be solved in Reference Document 1 is that even when the Fe content exceeds 0.4 mass%, it still has the same fracture toughness and fatigue characteristics as the aluminum alloy forged material with the Fe content of 0.4 mass% or less
Comparative Document 1 The tensile strength and yield strength of the aluminum alloy cannot meet the requirements of high-safety automobiles

Method used

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  • High-performance aluminum alloy profiles for automobile chassis
  • High-performance aluminum alloy profiles for automobile chassis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] 1. The raw materials are prepared according to the predetermined ratio, and the formula is as follows:

[0069] 0.20%Si, 0.20%Fe, 0.01%Cu, 0.01%Mn, 1.01%Mg, 0.01%Cr, 6.5%Zn, 0.15%Ti, 0.08%%Zr, the rest is Al;

[0070] 2. The raw materials are melted and cast into liquid alloys, and then cooled to form solid round ingots;

[0071] 3. Carry out homogenization heat treatment for the solid round ingot. The homogenization heat treatment includes first holding the temperature at 460°C for 15 hours, then cooling down by 20°C every hour to below 200°C and then air cooling;

[0072] 4. Cool the hot rod with a rod temperature of 490°C in the air for 1 minute, install the cooled hot rod on the extruder, and then extrude the solid round ingot through the extruder to form an alloy profile, wherein, The mold temperature of the extruder is 470°C, and the temperature of the extrusion barrel is 440°C;

[0073] 5. Quenching the extruded alloy profiles;

[0074] 6. The alloy profile af...

Embodiment 2

[0076] 1. The raw materials are prepared according to the predetermined ratio, and the formula is as follows:

[0077] 0.10%Si, 0.10%Fe, 0.005%Cu, 0.004%Mn, 1.03%Mg, 0.002%Cr, 6.52%Zn, 0.12%Ti, 0.09%Zr, the rest is Al;

[0078] 2. The raw materials are melted and cast into liquid alloys, and then cooled to form solid round ingots;

[0079] 3. Carry out homogenization heat treatment for the solid round ingot. The homogenization heat treatment includes first holding the temperature at 465°C for 18 hours, then cooling down by 25°C per hour to below 200°C and then air cooling;

[0080] 4. Cool the hot rod with a rod temperature of 492°C in the air for 1 minute, install the cooled hot rod on the extruder, and then extrude the solid round ingot through the extruder to form an alloy profile, wherein, The mold temperature of the extruder is 475°C, and the temperature of the extrusion barrel is 442°C;

[0081] 5. Quenching the extruded alloy profiles;

[0082] 6. The quenched alloy ...

Embodiment 3

[0084] 1. The raw materials are prepared according to the predetermined ratio, and the formula is as follows:

[0085] 0.15%Si, 0.15%Fe, 0.001%Cu, 0.001%Mn, 1.05%Mg, 0.001%Cr, 6.55%Zn, 0.11%Ti, 0.10%Zr, the rest is Al;

[0086] 2. The raw materials are melted and cast into liquid alloys, and then cooled to form solid round ingots;

[0087] 3. Carry out homogenization heat treatment for the solid round ingot. The homogenization heat treatment includes first holding the temperature at 470°C for 20 hours, then cooling down by 30°C per hour to below 200°C and then air-cooling;

[0088] 4. Cool the hot rod with a rod temperature of 495°C in the air for 2 minutes, install the cooled hot rod on the extruder, and then extrude the solid round ingot through the extruder to form an alloy profile, wherein, The mold temperature of the extruder is 480°C, and the temperature of the extrusion barrel is 447°C;

[0089] 5. Quenching the extruded alloy profiles;

[0090] 6. The alloy profiles a...

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Abstract

The invention discloses a high-performance aluminum alloy profile for an automobile chassis. The high-performance aluminum alloy profile is prepared from the following components in percentage by weight: less than or equal to 0.20 percent of Si, less than or equal to 0.20 percent of Fe, less than or equal to 0.01 percent of Cu, less than or equal to 0.01 percent of Mn, 1.01 to 1.10 percent of Mg, less than or equal to 0.01 percent of Cr, 6.5 to 6.6 percent of Zn, less than or equal to 0.15 percent of Ti, 0.08 to 0.13 percent of Zr and the balance of Al. The high-performance aluminum alloy profile for the automobile chassis, disclosed by the invention, has the advantages of simple components, relatively-low cost and simple production technology; in addition, the tensile strength of the aluminum alloy profile is greater than or equal to 400MPa, the yield strength of the aluminum alloy profile is greater than or equal to 380MPa and the elongation percentage of the aluminum alloy profile is greater than or equal to 12 percent; the relatively-complex production requirements on the shape of the automobile chassis profile are met and the requirement on high safety of an automobile is also met.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy materials, in particular to a high-performance aluminum alloy profile for automobile chassis. Background technique [0002] The car chassis is composed of four parts: transmission system, driving system, steering system and braking system. The function of the chassis is to support and install the automobile engine and its components and assemblies, form the overall shape of the automobile, and accept the power of the engine to make the automobile move and ensure normal driving. [0003] The speed of domestic road construction is very fast, and there are often potholes on the road surface. When the road surface is repaired, in most cases, there will be more large rocks or potholes. At this time, the car does not pay attention when driving on such a road surface. It will make big stones or other road protrusions come into contact with the chassis of your own vehicle, which is what we often c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22C1/02C22F1/053B21C23/00B21C23/02B21C29/00B21C29/02B21C29/04
CPCB21C23/001B21C23/02B21C29/003B21C29/02B21C29/04C22C1/026C22C21/10C22F1/053
Inventor 潘伟津
Owner GUANGDONG WEIYE ALUMINUM FACTORY GRP