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6-series aluminum alloy sectional material for new energy battery tray and machining method of 6-series aluminum alloy sectional material

A technology of aluminum alloy profiles and battery trays, which is applied in the field of aluminum alloy processing, can solve the problems of lack of special alloys, etc., and achieve high welding performance, good heat conduction and welding performance, and good heat conduction and welding performance

Active Publication Date: 2019-02-19
湖南海铝汽车工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, no dedicated alloys have been developed specifically for automotive pallets

Method used

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  • 6-series aluminum alloy sectional material for new energy battery tray and machining method of 6-series aluminum alloy sectional material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A processing method for 6-series aluminum alloy profiles for new energy battery trays includes the following steps:

[0033] (1) Heat the raw material aluminum ingot to 730°C to melt to obtain molten aluminum;

[0034] (2) Remove scum on the surface of molten aluminum, according to the chemical composition of 6 series aluminum alloy profiles: Si 0.65%, Mg 0.92%, Cu 0.20%, Fe 0.15%, Mn 0.05%, Cr 0.10%, Zn 0.003%, Ti 0.05 %, the balance is the standard of Al to adjust the content of alloying elements in the molten aluminum, and refining and standing;

[0035] (3) Filter the aluminum liquid after standing, and then cast it while cooling with water at a temperature of 23°C for 60 minutes to obtain an aluminum rod with a diameter of 152mm;

[0036] (4) After preheating the aluminum rod at a temperature of 510°C for 3 hours, extrude it at an extrusion speed of 10m / min and at a temperature of 520°C at the discharge port. Utilizing the high-temperature solid solution effect in...

Embodiment 2

[0039] A processing method for 6-series aluminum alloy profiles for new energy battery trays includes the following steps:

[0040] (1) Heat the raw material aluminum ingot to 720°C to melt to obtain molten aluminum;

[0041] (2) Remove scum on the surface of molten aluminum, according to the chemical composition of 6 series aluminum alloy profiles: Si 0.68%, Mg 0.90%, Cu 0.22%, Fe 0.20%, Mn 0.03%, Cr 0.09%, Zn 0.008%, Ti 0.03 %, the balance is the standard of Al to adjust the content of alloying elements in the molten aluminum, and refining and standing;

[0042] (3) Filter the molten aluminum after standing, and then cast it while cooling with water at a temperature of 26°C for 62 minutes to obtain an aluminum rod with a diameter of 152mm;

[0043] (4) After preheating the aluminum rod at a temperature of 520°C for 2.5 hours, extrude it at an extrusion speed of 8m / min and at a temperature of 530°C at the discharge port. Utilizing the high temperature solid solution effect d...

Embodiment 3

[0046] A processing method for 6-series aluminum alloy profiles for new energy battery trays includes the following steps:

[0047] (1) Heat the raw material aluminum ingot to 740°C to melt to obtain molten aluminum;

[0048] (2) Remove scum on the surface of molten aluminum, according to the chemical composition of 6 series aluminum alloy profiles: Si 0.66%, Mg 0.94%, Cu 0.21%, Fe 0.18%, Mn 0.08%, Cr 0.11%, Zn 0.001%, Ti 0.08 %, the balance is the standard of Al to adjust the content of alloying elements in the molten aluminum, and refining and standing;

[0049](3) Filter the molten aluminum after standing, and then cast it while cooling with water at a temperature of 24°C for 60 minutes to obtain an aluminum rod with a diameter of 152mm;

[0050] (4) After preheating the aluminum rod at a temperature of 500°C for 4 hours, extrude it at an extrusion speed of 5m / min and at a temperature of 520°C at the discharge port. Utilizing the high-temperature solid-solution effect in t...

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Abstract

The invention discloses a 6-series aluminum alloy sectional material for a new energy battery tray and a machining method of the 6-series aluminum alloy sectional material. According to the total weight of the 6-series aluminum alloy sectional material, the 6-series aluminum alloy sectional material comprises following chemical components including 0.65%-0.70% of Si, 0.90%-0.95% of Mg, 0.18%-22% of Cu, smaller than or equal to 0.20% of Fe, smaller than 0.1% of Mn, 0.09%-0.12% of Cr, smaller than 0.01% of Zn, smaller than 0.1% of Ti and the balance Al. The machining method of the 6-series aluminum alloy sectional material for the new energy battery tray is further included. The 6-series aluminum alloy sectional material for the new energy battery tray combines the characteristics of high strength and tenacity, high welding performance, corrosion resistance and fatigue resistance, and is suitable for the new energy battery tray machining process. The experiment shows that the hardness ofthe 6-series aluminum alloy sectional material can reach 16.2-17.5 hw, the tensile strength is larger than or equal to 290 Mpa, the yield strength is larger than or equal to 260 Mpa, and ductility islarger than or equal to 10 A50 mm%.

Description

technical field [0001] The invention relates to the field of aluminum alloy processing, in particular to a 6-series aluminum alloy profile for a new energy battery tray and a processing method thereof. Background technique [0002] At present, light weight and low cost are important directions for the development of electric vehicles. The requirements for materials for new energy battery trays are: high precision, good electrical performance, resistance to electrolyte, flame retardant, long-term dimensional stability, light weight, and good mechanical properties , A wide range of applications. In the past, new energy vehicles mostly used steel materials to make electric vehicle power battery trays, and the weight was high. Nowadays, many enterprises mainly use aluminum alloy materials as power battery trays for electric vehicles. The density of aluminum alloy is 2.7g / cm³. No matter in compression or welding, aluminum alloy material has obvious advantages; and aluminum alloy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22F1/047
CPCC22C21/08C22F1/002C22F1/047
Inventor 周芳坤贺再林肖孝未李江峰谢国军
Owner 湖南海铝汽车工业有限公司
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