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A production process of high-temperature stable 6-series aluminum alloy profiles

An aluminum alloy profile, high temperature stability technology, applied in the field of aluminum alloy extrusion, can solve problems affecting the stability of parts, safety of transportation equipment, low service life, etc., achieve temperature stability improvement, simple preparation method, and improve high temperature stability performance Effect

Active Publication Date: 2020-12-08
CHINA ZHONGWANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a high-temperature stable 6-series aluminum alloy profile in order to solve the above-mentioned problems that the strength of the existing 6-series aluminum alloy is reduced under high-temperature exposure, which affects the stability of parts and causes the safety and service life of the prepared traffic equipment. The production process, by controlling the content and proportion of different alloy elements, the alloy has better mechanical properties at high temperature, which can improve the thermal stability of the alloy in service state, and at the same time, the mechanical properties are enhanced by heat treatment. Aluminum alloy sheet has higher strength and stable performance under high temperature exposure, which enhances the competitiveness of lightweight aluminum alloy sheet and promotes the wide application of aluminum alloy in automobiles and aircraft

Method used

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  • A production process of high-temperature stable 6-series aluminum alloy profiles
  • A production process of high-temperature stable 6-series aluminum alloy profiles
  • A production process of high-temperature stable 6-series aluminum alloy profiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A, the amount of each raw material is calculated aluminum alloy material prepared in accordance ratio of each element 6 mass percent based alloy material was prepared as follows:

[0032] element Mg Si FE Cu Mn Cr Zn Ti Mg / Si Al content 0.60 0.92 0.17 0.10 0.40 0.15 0.15 0.1 0.65 margin

[0033] The prepared alloy was added to the raw material melting furnace is melted after uniformly mixed molten aluminum alloy, the aluminum alloy casting of molten aluminum alloy ingot;

[0034] B, and the cast aluminum alloy ingot 550 ± 5 ℃ homogenizing 6h, eliminating segregation ingot grain structure;

[0035] C, homogenizing the aluminum alloy ingot was placed in an extrusion die extrusion extruded from the extruder barrel to obtain 6-based aluminum alloy, wherein the extrusion die heating temperature is 480 ~ 500 ℃, heating the extruder barrel temperature of 440 ~ 460 ℃, aluminum alloy ingot heating temperature is 470 ~ 490 ℃, extrusion speed of ...

Embodiment 2

[0045] Example 2 and Example 1 The difference between the six-series aluminum alloy raw materials in the step A is proportional to:

[0046] element Mg Si FE Cu Mn Cr Zn Ti Mg / Si Al content 0.58 0.65 0.17 0.08 0.40 0.13 0.20 0.10 0.89 margin

[0047] Example 2 The mechanical performance data of the aluminum alloy profile at 150 ° C temperature after the labor time, and the data change trend is shown in Table 2. figure 2 .

[0048] Table 2

[0049] Heat treatment 0h Heat treatment 240h Heat treatment 480h Heat treatment 720H Heat treatment 1000h Yield strength (MPA) 266.4 262.9 257.0 252.4 247.9 Tensile strength (MPa) 280.4 276.2 272.0 269.2 265.4 Fracture elongation (%) 10.0 10.0 10.5 11.0 10.5

[0050] From Table 2 and figure 2 It can be seen that after artificiality, the aluminum alloy profile is heat treatment at 150 ° C for 1000 hours, the yield strength is attenuated by 6.9%, and the tensile ...

Embodiment 3

[0052] Example 3 The difference between the 6-Series aluminum alloy raw material in step A is proportional to the following:

[0053] element Mg Si FE Cu Mn Cr Zn Ti Mg / Si Al content 0.70 0.63 0.18 0.12 0.40 0.15 0.10 0.06 1.12 margin

[0054] Example 3 The mechanical performance data of the aluminum alloy profile at 150 ° C temperature after the labor time, and the data change trend is shown in Table 3. image 3 .

[0055] table 3

[0056] Heat treatment 0h Heat treatment 240h Heat treatment 480h Heat treatment 720H Heat treatment 1000h Yield strength (MPA) 255.2 255.9 253.1 252.1 250.0 Tensile strength (MPa) 281.1 279.4 277.3 275.2 275.2 Fracture elongation (%) 12.0 11.5 12.0 12.5 11.5

[0057] From Table 3 and image 3 It can be seen that the aluminum alloy profile after artificial time is heat treatment at 150 ° C for 1000 hours, the yield strength attenuation is 2.0%, and the tensile strength i...

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Abstract

The invention belongs to the technical field of aluminum alloy extrusion, and relates to a production process of a high-temperature stable 6-series aluminum alloy section bar. A 6-series aluminum alloy raw material is prepared from, by weight: 0.5%-0.7% of Mg, 0.6%-1.0% of Si, 0.16%-0.18% of Fe, 0.05%-0.20% of Cu, 0.05%-0.4% of Mn, 0.12%-0.15% of Cr, 0.03%-0.20% of Zn, and 0.05%-0.15% of Ti, wherein individual impurities are less than or equal to 0.05%, the impurities are less than or equal to 0.15% in total, and the balance is Al; the mass ratio of Mg to Si is in the range of 0.5-1.2, preferably 0.85-1.15; and the total weight parts of Mg and Si are in the range of 1.1%-1.7%, preferably 1.15%-1.45%. The aluminum section bar obtained by adopting the production process has great advantagesin temperature stability, can meet the requirement of the current market for high-temperature stability of alloy materials, and lays a foundation for developing alloys with higher stability in the future.

Description

Technical field [0001] The present invention pertains to an aluminum alloy extrusion technology relates to the field-based high temperature stable aluminum profile 6 of the production process, particularly to a high temperature stable Al-Mg-Si aluminum alloy production process. Background technique [0002] Lightweight materials as aluminum and aluminum alloy has been widely used in the field of modern traffic, compared with the conventional steels, aluminum, aluminum alloys and therefore are widely used in the automotive and aircraft industries than high strength, light weight, excellent corrosion resistance. 6 based alloy of low price, the most widely used is an aluminum alloy, the heat treatment method is typical T6 treatment: deformation after casting and homogenizing treatment, and then subjected to solution treatment and quenching, and finally at a temperature age-hardening process. After aging the aluminum precipitation hardening nanoscale particles uniformly dispersed imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22F1/043C22C21/08C22F1/047C22C1/02B21C23/04B21C29/02B21C29/04
CPCB21C23/04B21C29/003B21C29/02B21C29/04C22C1/026C22C21/02C22C21/08C22F1/002C22F1/043C22F1/047
Inventor 谢方亮王睿王爽李延军贾占涛何强陈茜韩启强付学丹
Owner CHINA ZHONGWANG