Anti-corrosion aluminum alloy pipe and preparation method thereof

A corrosion-resistant aluminum alloy and aluminum alloy tube technology, applied in the field of aluminum alloy materials, can solve problems such as parts leakage, product scrapping, corrosion penetration, etc., and achieve the effects of improving corrosion resistance, increasing strength, and reducing harmful impurities

Active Publication Date: 2017-12-08
JIANGSU ASIA PACIFIC LIGHT ALLOY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In today's lightweight era that advocates energy saving, aluminum alloy tubes are more and more widely used in various industries due to their low density. While meeting the mechanical strength, the requirements for the corrosion resistance of aluminum alloy tubes are also getting higher and higher. The common 3003 aluminum alloy pipe and its processing technology widely used at pre

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] 1. According to the mass percentage of the elements in the aluminum alloy tube Si: 0.06%, Fe: 0.1%, Cu: 0.005%, Mn: 0.81%, Mg: 0.22%, Zn: 0.003%, Ti: 0.015%, other impurities: 0.03 %, Al: margin.

[0034] Weigh the pure aluminum ingot, manganese agent, pure magnesium ingot and aluminum titanium boron grain refiner for smelting, and then put them into the dry smelting furnace, heating and melting into aluminum alloy solution, and controlling the temperature in the smelting furnace At 742°C. The specific implementation steps are: weigh the raw materials used for smelting → put pure aluminum ingots into the smelting furnace → heat the molten aluminum in the smelting furnace to 742°C and keep it warm → add slag breaker, remove slag → add manganese, Adjust composition of pure magnesium ingot and aluminum titanium boron grain refiner → stir for 10 minn → sample spectrum to analyze chemical composition → add aluminum rare earth alloy, the amount of aluminum rar...

Example Embodiment

[0042] The aluminum alloy tube manufactured in Example 1 has a tensile strength of 114Mpa, a yield strength of 35.1Mpa, and an elongation of 42%; the grain size of the cross section and the longitudinal section is uniform, and the average grain size of the cross section of the aluminum tube is about 48.3μm , The average grain size of the longitudinal section is about 56.7μm. The maximum corrosion depth of the aluminum pipe after 480 cycles (960h) in the seawater salt spray corrosion test (standard PV1208) is 0.19mm (accounting for 16% of the 1.2mm wall thickness).

Example Embodiment

[0043] Example 2

[0044] 1. According to the mass percentage of elements in the aluminum alloy tube Si: 0.08%, Fe: 0.14%, Cu: 0.008%, Mn: 0.98%, Mg: 0.38%, Zn: 0.007%, Ti: 0.035%, other impurities: 0.04 %, Al balance. Weigh the pure aluminum ingot, manganese agent, pure magnesium ingot and aluminum titanium boron grain refiner for smelting, and then put them into the dry smelting furnace, heating and melting into aluminum alloy solution, and controlling the temperature in the smelting furnace At 755°C. The specific implementation steps are: weigh the raw materials used for smelting → put pure aluminum ingots into the smelting furnace → heat the molten aluminum in the smelting furnace to 755°C and keep it warm → add slag breaker, remove slag → add manganese agent, Adjust the composition of pure magnesium ingot and aluminum titanium boron grain refiner → stir for 14 minn → sample spectrum analysis chemical composition → add aluminum rare earth alloy, the amount of aluminum rare ...

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Abstract

The invention provides an anti-corrosion aluminum alloy pipe and belongs to the technical field of aluminum alloy materials. The composition elements of the aluminum alloy pipe comprise, by mass, 0.05-0.1% of Si, 0.15% of Fe or the less, 0.01% of Cu or the less, 0.8-1.0% of Mn, 0.2-0.4% of Mg, 0.01% of Zn or the less, 0.01-0.05% of Ti, 0.05% of the other elements or the less and the balance Al. According to the anti-corrosion aluminum alloy pipe, through adjustment of components and change of the technique, the anti-corrosion performance of the aluminum pipe can be effectively improved while the 3003 aluminum pipe strength is met, and the service life of a product is prolonged.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy materials, in particular to a corrosion-resistant aluminum alloy tube and a processing method thereof. Background technique [0002] In today's lightweight era that advocates energy saving, aluminum alloy tubes are more and more widely used in various industries due to their low density. While meeting the mechanical strength, the requirements for the corrosion resistance of aluminum alloy tubes are also getting higher and higher. The common 3003 aluminum alloy pipe and its processing technology widely used at present have been difficult to meet the customer's increasing corrosion resistance requirements. After 480 cycles (960h) in the PV1208 seawater salt spray test, the maximum corrosion depth of the ordinary 3003 aluminum alloy pipe Exceeding more than 50% of the original wall thickness of the aluminum tube, some even corrode and penetrate, causing parts to leak and products to be scrappe...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/02C22C1/06C22F1/04B21C37/06
CPCB21C37/06C22C1/026C22C1/06C22C21/00C22F1/04
Inventor 丁岩钱庆
Owner JIANGSU ASIA PACIFIC LIGHT ALLOY TECH CO LTD
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