High-frequency welded tube cast ingot and manufacturing method thereof

A technology of high-frequency welded pipe and manufacturing method, which is applied in the field of welded pipe ingot and its manufacture, which can solve the problems of poor corrosion resistance and low service life, and achieve the effects of ensuring surface quality, reducing cracked waste products, and shortening casting time

Active Publication Date: 2016-05-25
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem of poor corrosion resistance and low service life of the aluminum alloy pipe manufactured by the existing method through seam brazing or seamless pipe, and provides a high-frequency welded pipe ingot and its manufacturing method

Method used

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  • High-frequency welded tube cast ingot and manufacturing method thereof
  • High-frequency welded tube cast ingot and manufacturing method thereof
  • High-frequency welded tube cast ingot and manufacturing method thereof

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Effect test

specific Embodiment approach 1

[0014] Embodiment 1: A high-frequency welded pipe ingot according to this embodiment, the high-frequency welded pipe ingot is composed of 0.6% to 0.84% ​​Si, 0.4% to 0.6% Fe, 0.40% to 0.70% Cu, 1.1 % ~ 1.4% Mn, 0.1% ~ 0.2% Ti and the balance of Al.

[0015] The effect of each element of this specific embodiment:

[0016] 1. Mn element:

[0017] Mn is the main alloying element in the aluminum alloy thin-walled high-frequency welded pipe for automobile radiators. With the increase of Mn content, the recrystallization temperature and strength of the alloy also increase. When the Mn content is higher than 1.6%, due to the formation of a large amount of brittle compound MnAl 6 , the alloy is easy to crack when deformed, so its content is controlled at 1.1% to 1.4%, which not only ensures the composition of the alloy, but also ensures its alloy performance. MnAl produced by Mn and Al 6 phase, its electrode potential is almost the same as that of aluminum, and it is a neutral me...

specific Embodiment approach 2

[0027] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the high-frequency welded pipe ingot is made of 0.74% Si, 0.45% Fe, 0.53% Cu, 1.24% Mn, 0.13% Ti and the balance of Al production. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Specific implementation mode three: The manufacturing method of a high-frequency welded pipe ingot described in this implementation mode is specifically carried out according to the following steps:

[0029] 1. Weighing: First, weigh 0.6% to 0.84% ​​Si, 0.4% to 0.6% Fe, 0.40% to 0.70% Cu, 1.1% to 1.4% Mn, 0.1% to 0.2% Ti and the rest of Al according to the mass percentage Take pure aluminum ingots, aluminum-silicon master alloys, aluminum-iron master alloys, aluminum-manganese master alloys, aluminum-titanium master alloys and metal Cu;

[0030] 2. Preparation of alloy melt: first add pure aluminum ingots into the resistance reverberatory furnace, then add aluminum-silicon master alloy, aluminum-iron master alloy, aluminum-manganese master alloy and aluminum-titanium master alloy, and heat to a temperature of 660℃~700℃ At this time, metal Cu is added to the resistance reverberatory furnace to melt, and at a temperature of 700°C to 750°C, stir for 10min to 15min, and the...

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Abstract

The invention provides a high-frequency welded tube cast ingot and a manufacturing method thereof. The high-frequency welded tube cast ingot and the manufacturing method aim at solving the problems that aluminum alloy tubes manufactured through an existing method and subjected to seaming brazing or seamless tubes are poor in corrosion resistance and short in service life. The high-frequency welded tube cast ingot is prepared from Si, Fe, Cu, Mn, Ti and the balance Al. The method includes the first step of weighing, the second step of alloy melt preparation and the third step of semi-continuous casting. The high-frequency welded tube cast ingot and the manufacturing method are used.

Description

technical field [0001] The present invention relates to welded pipe ingot and its manufacturing method. Background technique [0002] With the continuous progress of the development of science and technology, the automobile manufacturing industry has a new development direction in terms of improving manufacturing quality and reducing energy consumption. The lightweight of the car radiator system is an important field of car lightweight. The original car radiator pipes use copper or aluminum tubes that are brazed and seamless. The disadvantage of using copper tubes is that the specific cost is high. , Using aluminum tubes through bite brazing or seamless tubes, the corrosion resistance is poor and the service life is low. The development of aluminum alloy thin-walled high-frequency welded pipes for radiators can reduce the weight of automobiles, save energy, and increase the service life of radiators several times. Contents of the invention [0003] The present invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03B22D11/10
CPCB22D11/10C22C1/026C22C1/03C22C21/00
Inventor 胥健秋李海仙殷云霞贾宁李欣斌刘记伟孙海波王殿坤
Owner NORTHEAST LIGHT ALLOY CO LTD
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