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Aluminium alloy used for automobile anti-collision beam, and manufacturing method for product thereof

A technology of an aluminum alloy product and a manufacturing method, which is applied in the field of Al-Zn-Mg-Cu series aluminum alloy and its product manufacturing for automobile anti-collision beams, and achieves the effects of low hardenability, improved corrosion resistance and low production cost

Inactive Publication Date: 2014-09-03
GUANGDONG HAOMEI ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of existing aluminum alloys is difficult to meet this demand, so it is of great significance to develop an aluminum alloy for automobile anti-collision beams that can meet the new requirements

Method used

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  • Aluminium alloy used for automobile anti-collision beam, and manufacturing method for product thereof
  • Aluminium alloy used for automobile anti-collision beam, and manufacturing method for product thereof
  • Aluminium alloy used for automobile anti-collision beam, and manufacturing method for product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] First cast ingots according to the mass percentage of the aluminum alloy composition, the composition of the ingots is calculated by mass percentage (sampling and analyzing the chemical composition in the casting flow table): zinc (Zn) 6.80%, magnesium (Mg) 1.05%, copper ( Cu) 0.26%, zirconium (Zr) 0.17%, manganese (Mn) 0.12%, titanium (Ti) 0.012%, chromium (Cr) 0.02%, iron (Fe) 0.22%, silicon (Si) 0.18%, the balance is Aluminum (Al). It can be cast into an ingot by melting and then direct chilling or other conventional casting techniques, and the diameter of the ingot is Ф240mm.

[0041] Next, the cast ingot was homogenized and heated, and after being homogenized and heat-preserved at a temperature of 460° C. for 8 hours, it was taken out of the furnace and air-cooled to room temperature.

[0042] Then, the ingot is sawed into the extruded ingot according to the required length (low-magnification and high-magnification samples are taken), and it is sent into the induc...

Embodiment 2

[0046] First cast ingots according to the mass percentage of the aluminum alloy composition, the composition of the ingots is calculated by mass percentage (sampling and analyzing the chemical composition in the casting flow table): zinc (Zn) 6.65%, magnesium (Mg) 0.95%, copper ( Cu) 0.25%, zirconium (Zr) 0.18%, manganese (Mn) 0.10%, titanium (Ti) 0.014%, chromium (Cr) 0.03%, iron (Fe) 0.19%, silicon (Si) 0.15%, the balance is Aluminum (Al). It can be cast into an ingot by melting and then direct chilling or other conventional casting techniques, and the diameter of the ingot is Ф240mm.

[0047] Next, the cast ingot was homogenized and heated, and after homogenized heating at a temperature of 450° C. for 7 hours, it was taken out of the furnace and air-cooled to room temperature.

[0048] Then, the ingot is sawed into the extruded ingot according to the required length (low-magnification and high-magnification samples are taken), and it is sent into the induction furnace and ...

Embodiment 3

[0052] First cast ingots according to the mass percentage of the composition of the aluminum alloy, the composition of the ingots is calculated according to the mass percentage (sampling and analyzing the chemical composition in the casting flow table): zinc (Zn) 6.55%, magnesium (Mg) 0.90%, copper ( Cu) 0.20%, zirconium (Zr) 0.20%, manganese (Mn) 0.15%, titanium (Ti) 0.01%, chromium (Cr) 0.01%, iron (Fe) 0.25%, silicon (Si) 0.20%, the balance is Aluminum (Al). It can be cast into an ingot by melting and then direct chilling or other conventional casting techniques, and the diameter of the ingot is Ф240mm.

[0053] Next, the cast ingot was homogenized and heated for 9 hours at a temperature of 460° C., and then it was taken out of the furnace and air-cooled to room temperature.

[0054] Then, the ingot is sawed into the extruded ingot according to the required length (low-magnification and high-magnification samples are taken), and it is sent into the induction furnace and he...

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Abstract

The invention relates to an aluminum alloy used for an automobile anti-collision beam, and a manufacturing method for a product thereof. The aluminum alloy comprises, by mass, 6.50%-6.80% of Zn, 0.90%-1.10% of Mg, 0.2-0.30% of Cu, 0.15%-0.20% of Zr, 0.10%-0.15% of Mn, 0.01-0.02% of Ti, less than or equal to 0.05% of Cr, less than or equal to 0.25% of Fe, less than or equal to 0.20% of Si, and the balance being Al. The tensile strength of the automobile anti-collision beam obtained by the aluminum alloy can reach over 420 MPa; yield strength can be stably controlled between 390 MPa and 420 MPa; percentage elongation after fracture is larger than 10%; and weldability and corrosion resistance are increased to different degrees than an automobile anti-collision beam obtained by adopting an original alloy system. The aluminum alloy can meet anti-collision and energy absorption requirements of the automobile, and retains the low quenching sensitivity of 7003 alloy, and can be used for producing high performance automobile anti-collision beams.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and in particular relates to an Al-Zn-Mg-Cu series aluminum alloy used for an automobile anti-collision beam and a method for manufacturing the product thereof. Background technique [0002] Aluminum alloy is an alloy composed of aluminum as the matrix element and one or more alloying elements. Aluminum alloy is the most widely used non-ferrous metal material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. At present, aluminum alloy extrusions for automobile anti-collision beams are traditionally made of 6061, 6082, 6351 aluminum alloy extrusions or 7003, 7005 (7N01), 7021, 7029 aluminum alloy extrusions, the first three aluminum alloy materials The tensile strength of the alloy belongs to 300MPa level, and its yield strength and elongation after fracture are about 250MPa and 8%; the tensile strength o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22F1/053
Inventor 项胜前周春荣蔡月华梁界光陈东罗涛涛朱世安
Owner GUANGDONG HAOMEI ALUMINUM
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