Extruding processing technology of aluminium alloy tubing with large diameter

An aluminum alloy pipe and extrusion processing technology, which is applied in the field of aluminum alloy extrusion, can solve the problems of difficult production of large-caliber aluminum alloy pipe, small diameter of aluminum alloy pipe production, and large consumption of auxiliary equipment, etc., to eliminate long production cycle, Effect of improving strength characteristics and reducing device failure rate

Inactive Publication Date: 2012-06-13
CHINA ZHONGWANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a large-diameter aluminum alloy pipe extrusion process, which solves the problem of difficult production of large-diameter aluminum alloy pipes in the prior art, and can solve the problems of rolling, drawing and other processes. The disadvantages of aluminum alloy pipe production are small diameter, complex production process, high energy consumption, large pollution and large consumption of auxiliary equipment, etc.

Method used

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  • Extruding processing technology of aluminium alloy tubing with large diameter
  • Extruding processing technology of aluminium alloy tubing with large diameter
  • Extruding processing technology of aluminium alloy tubing with large diameter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: a large-diameter aluminum alloy pipe extrusion process, comprising the following steps:

[0023] a. Ingredients: This profile adopts 6005A alloy, and the mass percentage ratio of each element meets the following requirements;

[0024] the element

Si

Mg

Fe

Cu

mn

Cr

Ti

Zn

other

Al

content

0.70

0.55

0.25

0.05

0.05

0.05

0.05

0.05

0.10

the remaining

[0025] The ingredients can follow the following process: First, put the ingredients into the melting furnace for smelting. The furnace is controlled at 740°C, and the flux is used for refining and covering. After feeding, when molten aluminum appears in the furnace, start stirring, and after refining and slag removal to obtain qualified components, inject molten aluminum from the melting furnace into the holding furnace, keep the furnace temperature at 730°C for 20 minutes, and then use ar...

Embodiment 2

[0035] Embodiment 2: a large-diameter aluminum alloy pipe extrusion process, comprising the following steps:

[0036] a. Ingredients: This profile adopts 6005A alloy, and the mass percentage ratio of each element meets the following requirements;

[0037] the element

Si

Mg

Fe

Cu

mn

Cr

Ti

Zn

other

Al

content

0.80

0.45

0.25

0.05

0.05

0.05

0.05

0.05

0.10

the remaining

[0038] The ingredients can follow the following process: put the ingredients into the melting furnace for smelting in turn, control the temperature in the furnace at 740 ° C, and use flux to refine and cover; After qualified components, pour the aluminum liquid from the melting furnace into the holding furnace, keep the furnace temperature at 740°C for 30 minutes, and then use argon to bring the hydrogen and fine impurities in the aluminum liquid to the surface, thereby reducing the hydrog...

Embodiment 3

[0048] Embodiment 3: A large-diameter aluminum alloy pipe extrusion process, comprising the following steps:

[0049] a. Ingredients: This profile adopts 6005A alloy, and the mass fraction ratio of each element meets the following requirements:

[0050]

[0051]The ingredients can follow the following process: First, put the ingredients into the melting furnace for smelting. The furnace is controlled at 740°C, and the flux is used for refining and covering. After feeding the materials, when molten aluminum appears in the furnace, start stirring, and after refining and slag removal to obtain qualified components, pour the molten aluminum from the smelting furnace into the holding furnace, keep the furnace temperature at 735°C for 25 minutes, and then use argon gas to Bring the hydrogen and fine impurities in the aluminum liquid to the surface, thereby reducing the hydrogen content in the aluminum liquid;

[0052] b. Casting: This method adopts oil-slip casting, the casting ...

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Abstract

The invention discloses an extruding processing technology of an aluminium alloy tubing with large diameter. The method comprises steps of a. proportioning, b. casting, c. uniformization, d. surface treatment on casting rod, e. casting rod heating, f. extrution, g. on-line quenching, h. stretching, i. artificial aging and j. straightening, etc. Strict control on each parameter can solve problems of extruding production of tubing with large diameter, eliminate disadvantages of long production period, low production efficiency, high energy consumption, huge environmental pollution and expensiveauxiliary equipment of rolling and drawing, save cost, simplify arrangement of auxiliary equipment and further reduce failure rate of an apparatus. The energy consumption of the present invention is merely 1/4 that of rolling and drawing, and water consumption is 1/ 8 that of a steam jet pump set; therefore, the invention brings obvious economic effects.

Description

technical field [0001] The invention relates to the field of aluminum alloy extrusion, in particular to an extrusion process for large-diameter aluminum alloy pipes. Background technique [0002] With the development of my country's aluminum extrusion industry, the demand for aluminum alloy pipes in the fields of transportation, construction, navigation, mining and scientific research is increasing, but the requirements for the dimensional accuracy and appearance quality of the pipes are relatively high. The extrusion technology of aluminum alloy small-diameter (below Φ220mm) pipes has become increasingly mature, but there are few studies on large-scale pipes at home and abroad. The degree requirements are very strict, and the production is very difficult. Contents of the invention [0003] In view of this, the object of the present invention is to provide a large-diameter aluminum alloy pipe extrusion process, which solves the problem of difficult production of large-dia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22F1/043B23P15/00B21C31/00
Inventor 李延军李鹏伟庞俊铭陈立操曹阳
Owner CHINA ZHONGWANG
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