Method for manufacturing an aluminum magnesium alloy bridge frame

A technology of aluminum-magnesium alloy and manufacturing method, applied in the field of manufacturing of aluminum-magnesium alloy bridge, can solve the problems of high anti-corrosion cost, unsuitable use, inconvenient installation, etc., and achieves high corrosion resistance, beautiful appearance and convenient installation. Effect

Inactive Publication Date: 2009-09-02
YANGZHONG YANGZILV PROCESSING CO LTD
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Problems solved by technology

[0003] The invention proposes an aluminum-magnesium alloy bridge and its manufacturing method, aiming at overcoming the heavy weight of the steel bridge existing in the

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  • Method for manufacturing an aluminum magnesium alloy bridge frame
  • Method for manufacturing an aluminum magnesium alloy bridge frame

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[0009] The method for manufacturing aluminum-magnesium alloy bridge is characterized in that the method includes the following process steps:

[0010] (1) Treatment of aluminum-magnesium alloy profiles:

[0011] 1) Aluminum alloy rods (chemical composition GB / T3196-1996, technical standard GB / T6892-2000)

[0012] 2) Heating treatment: The aluminum alloy rod is heated in a heating furnace at 380-460°C and kept at a constant temperature for 4 hours to ensure that the aluminum rod has the same internal and external temperature before extrusion.

[0013] 3) Profile extrusion: The aluminum alloy profile hydraulic extruder uses a fixed die to extrude the heated aluminum rod. The working pressure of the hydraulic extruder is generally 200KG / CM 2 .

[0014] 4) Straightening (stretching) inspection: After the aluminum profile is extruded, it is stretched with a stretching machine. Generally, the elongation of the aluminum profile is 8%.

[0015] 5) Aging treatment. Put the straightened (st...

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Abstract

The invention discloses a method for manufacturing an aluminum magnesium alloy bridge frame, which comprises the treatment of aluminum magnesium alloy sections and the manufacturing of the aluminum magnesium alloy bridge frame. The treatment of aluminum magnesium alloy sections comprises the steps of aluminum bar selection, heat treatment, section extrusion, leveling, and aging. The manufacturing of the aluminum magnesium alloy bridge frame comprises the steps of aluminum magnesium alloy section blanking, hole including connecting film perforation punching on trapezoidal edges, section surface anodic oxidation or electrostatic spraying, and bridge frame assembly. The method has the advantages that: the bridge frame is formed once by extruding aluminum alloy sections, and is light, high in corrosion resistance, convenient in installation, elegance, long in service life which is ten times of that of a steel bridge frame, energy-saving, environmentally friendly and maintenance-free; the loading capacity of the bridge frame is double compared with the steel bridge frame, and the sections have certain long-lasting elasticity and are free from deformation; a large-span aluminum alloy bridge frame adopts sandwich aluminum sections of which the cross sections are 'II'-shaped symmetric double-layer extruded sections and which have strong loading capacity, supporting force and tensile strength to ensure the firmness and safety of the bridge frame.

Description

technical field [0001] The invention relates to a method for manufacturing an aluminum-magnesium alloy bridge, which belongs to the technical field of bridge manufacture. Background technique [0002] Existing steel bridges are heavy in weight, inconvenient to install, high in anti-corrosion costs, and not suitable for use in highly corrosive places such as acid, alkali and fog. Contents of the invention [0003] The invention proposes an aluminum-magnesium alloy bridge and its manufacturing method, aiming at overcoming the heavy weight of the steel bridge existing in the prior art, inconvenient installation, high cost of anti-corrosion, and not suitable for corrosive environments such as acid-base fog. Strong place use and other defects. [0004] Technical solution of the present invention: it is characterized in that the method comprises the following process steps: [0005] 1. Processing of aluminum-magnesium alloy profiles: 2. Manufacturing of aluminum-magnesium allo...

Claims

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Application Information

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IPC IPC(8): B23P15/00
Inventor 张荣华
Owner YANGZHONG YANGZILV PROCESSING CO LTD
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