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Thermal-cracking-resistant aluminum alloy section bar and preparation method thereof

An aluminum alloy profile and thermal cracking technology, which is applied in the field of aluminum alloy, can solve the problems of affecting appearance and safety, and achieve the effects of increasing strength and yield, improving grain structure, improving corrosion resistance and extrusion speed

Active Publication Date: 2013-09-25
安徽家园铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing aluminum alloy profiles are used for a long time in a special environment such as high temperature, and cracks appear, which affects the appearance and is not safe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Aluminum alloy profiles for preventing thermal cracking, which contain the following components in weight percent: copper 0.95, silicon 0.57, iron 0.96, titanium 0.125, carbon 0.29, beryllium 0.017, cerium 0.12, praseodymium 0.054, neodymium 0.012, lanthanum 0.024, the balance is aluminum.

[0016] The preparation method of the aluminum alloy section bar that prevents heat cracking is characterized in that comprising the following steps:

[0017] (1) Weigh copper, silicon, iron, and titanium raw materials, mix them in a weight ratio of 6:4:6:1, and melt them to prepare copper alloy blocks; weigh beryllium, neodymium, and lanthanum raw materials in a weight ratio of 1:1 : 2 mixed, melted, and prepared beryllium alloy block;

[0018] (2) Heat the aluminum ingot to 715-730°C to melt, remove the slag, add the prepared copper alloy block and beryllium alloy block, and mix well, then add other alloy ingredients, mix well, and pass in refining agent for refining , slag remov...

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PUM

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Abstract

The invention relates to a thermal-cracking-resistant aluminum alloy section bar and a preparation method thereof. The section bar comprises the components of, by weight: 0.9-1.1% of copper, 0.5-0.7% of silicon, 0.9-1.1% of iron, 0.12-0.14% of titanium, 0.2-0.4% of carbon, 0.011-0.022% of beryllium, 0.11-0.13% of cerium, 0.05-0.06% of praseodymium, 0.011-0.013% of neodymium, 0.022-0.026% of lanthanum, and balance of aluminum. According to the invention, a proper amount of titanium is added into aluminum alloy, such that aluminum alloy grain tissue can be substantially refined, alloy mechanical performances can be improved, and alloy thermal-cracking tendency can be reduced.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys, in particular to an aluminum alloy profile for preventing thermal cracking and a preparation method thereof. Background technique [0002] my country is a big producer of aluminum profiles, and architectural aluminum profiles account for the vast majority of the entire aluminum profile market, but they often provide low-end products, mainly used for building doors and windows, indoor and outdoor decoration, and curtain wall structures with low requirements. The existing aluminum alloy profiles are used for a long time in a special environment such as high temperature, and cracks appear, which not only affects the appearance but also is unsafe. Contents of the invention [0003] The purpose of the present invention is to provide an aluminum alloy profile with high strength, high hardness and heat crack prevention and its preparation method. [0004] Technical scheme of the present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C21/14C22C1/03C22F1/04C22F1/057
Inventor 李广勋谭浩沈勇张燕辉
Owner 安徽家园铝业有限公司