Super-large-section aluminum alloy profile, manufacturing method thereof and application

An aluminum alloy profile and manufacturing method technology, applied in the field of hot extrusion manufacturing, can solve the problems of affecting the weight of the car body, large welding workload, etc., and achieve the effects of increasing the strengthening effect, reducing the production cost and improving the anti-fatigue performance.

Active Publication Date: 2021-02-02
山东兖矿轻合金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the technical problems of large welding workload and affecting the weight, strength and aesthetics of the car body when using the small-section 6A01 alloy, the invention provides a super-large-section aluminum alloy profile and its manufacturing method and application. The super-large-section aluminum alloy produced by the invention The profile has high strength, good weldability and fatigue resistance, and the control level of dimensional accuracy technical indicators is high, the quality is stable, the comprehensive performance is good, and the cost is low, which is conducive to industrial production batch and field application

Method used

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  • Super-large-section aluminum alloy profile, manufacturing method thereof and application
  • Super-large-section aluminum alloy profile, manufacturing method thereof and application

Examples

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Effect test

Embodiment 1

[0041] A super large section aluminum alloy profile, the aluminum alloy profile is composed of the following components by weight:

[0042] Si: 0.5%, Fe: 0.15%, Cu: 0.01%, Mn: 0.02%, Mg: 0.60%, Cr: 0.01%, Zn: 0.01%, Ti: 0.02%, Pb: 0.005%, the balance is Al and Inevitable impurities, of which Mn+Cr: ≤0.50%;

[0043] The manufacturing method of the aluminum alloy profile comprises the following steps:

[0044] (1) Casting: smelting according to the proportion, and cast into a round cast rod with a diameter of 655mm;

[0045] (2) Two-stage homogenization treatment: The round cast rod is subjected to a two-stage homogenization treatment. Insulated for 10h; finally heated to 560°C for 10h; then naturally lowered to room temperature to obtain a homogenized round cast rod;

[0046] Perform 100% ultrasonic flaw detection on round cast rods, and the ultrasonic inspection acceptance level of said round cast rods should meet the requirements of Grade B in GB / T 6519;

[0047] (3) Wago...

Embodiment 2

[0056] A super large section aluminum alloy profile, the aluminum alloy profile is composed of the following components by weight:

[0057] Si: 0.7%, Fe: 0.20%, Cu: 0.10%, Mn: 0.02%, Mg: 0.50%, Cr: 0.20%, Zn: 0.05%, Ti: 0.06%, Pb: 0.001%, the balance is Al and Inevitable impurities, of which Mn+Cr≤0.50%;

[0058] The manufacturing method of the aluminum alloy profile comprises the following steps:

[0059] (1) Casting: smelting according to the proportion, and cast into a round cast rod with a diameter of 465mm;

[0060] (2) Two-stage homogenization treatment: the round cast rod is subjected to a two-stage homogenization treatment. Incubate for 8h; finally heat to 570°C for 8h; then naturally drop to room temperature to obtain a homogenized round cast rod;

[0061] Perform 100% ultrasonic flaw detection on round cast rods, and the ultrasonic inspection acceptance level of said round cast rods should meet the requirements of Grade B in GB / T 6519;

[0062] (3) Wagon: Turn th...

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Abstract

The invention relates to the technical field of hot extrusion manufacturing, in particular to a super-large-section aluminum alloy profile, a manufacturing method thereof and application of the super-large-section aluminum alloy profile serving as a vehicle body structural material. The aluminum alloy profile is composed of 0.45%-0.75% of Si, smaller than or equal to 0.25% of Fe, smaller than or equal to 0.20% of Cu, smaller than or equal to 0.50% of Mn, 0.50%-0.75% of Mg, smaller than or equal to 0.30% of Cr, smaller than or equal to 0.10% of Zn, smaller than or equal to 0.10% of Ti, smallerthan 0.01% of Pb, and the balance Al and inevitable impurities, wherein the amount of Mn and Cr is smaller than or equal to 0.50%. The manufacturing method comprises the steps of casting, two-stage homogenization treatment, turning, extrusion treatment, online solution treatment, tension stretching and artificial aging. The ultra-large-section aluminum alloy profile has high strength, good weldability and fatigue resistance, a high dimensional precision technical index control level, stable quality, good comprehensive performance and low cost.

Description

technical field [0001] The invention relates to the technical field of hot extrusion manufacturing, in particular to a super large section aluminum alloy profile and a manufacturing method and application thereof. Background technique [0002] On the one hand, the high speed of the train requires improving the traction power of the locomotive, and on the other hand, it requires the realization of lightweight structural materials and the use of train appearance design with lower resistance. As an aluminum-magnesium-silicon alloy, 6A01 alloy has good extrudability, weldability, corrosion resistance and moderate strength, and is widely used in the manufacture of side walls and roofs of train bodies. The section size of the existing 6A01 alloy is mainly concentrated in the range of 400-500mm, and the width is relatively narrow. When used as a vehicle body structural material, the assembly and welding of multiple profiles is heavy, and the production efficiency is low. The overa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C21/08C22C1/02C22F1/05
CPCC22C1/026C22C21/02C22C21/08C22F1/002C22F1/05
Inventor 王鹏李永卉王明坤张新峰王涛韩正乾刘博孙文超欧庆峰杨富波董瑞峰鞠克江张寒沈鹏勇傅冰霜夏松魏凯歌周庆涛张培海孟涛陈烁董阳蒋玉程王小宁李攀攀吴茂来韩军乾刘德涛刘浩王韧
Owner 山东兖矿轻合金有限公司
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