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Preparation method of 6009 aluminum alloy plate

A technology for aluminum alloy sheet and aluminum alloy ingot, applied in the field of aluminum alloy, can solve the problems of reducing sheet stamping formability, increasing production cost, reducing production efficiency, etc. Effect

Active Publication Date: 2017-03-22
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The homogenization treatment temperature of 6009 aluminum alloy ingots generally exceeds 530 ° C, and the holding time exceeds 12 hours, which not only consumes time and energy, but also seriously reduces production efficiency and significantly increases production costs. It is worth noting that high-temperature homogenization treatment will make the main The excess crystalline phase containing AlFeMnSi is spheroidized, coarsened and distributed along the dendrite boundary, which may reduce the stamping formability of subsequent sheets

Method used

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  • Preparation method of 6009 aluminum alloy plate
  • Preparation method of 6009 aluminum alloy plate
  • Preparation method of 6009 aluminum alloy plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method of 6009 aluminum alloy plate, comprising the following steps:

[0034] (1) Ingot preparation: 6009 aluminum alloy ingots were prepared by direct water-cooling semi-continuous casting, with a thickness of 180mm, and the ingredients and their mass percentages were: Si: 0.92%, Mg: 0.73%, Mn: 0.51%, Cu: 0.45%, Fe≤0.50%, Zn≤0.25%, Cr≤0.10%, Ti≤0.10%, impurity elements≤0.15%, the balance is Al;

[0035] (2) Heating: After the 6009 aluminum alloy ingot is cut and milled, it is heated to 350°C in a circulating air furnace, kept for 6h, and then heated to 430°C, kept for 4h;

[0036] (3) Hot rolling: hot-roll the 6009 aluminum alloy ingot after heat preservation. The hot rolling method is to roll 5 times along the width direction of the slab, and then roll 14 times along the length direction of the slab. , rolled into a hot-rolled plate with a thickness of 4mm;

[0037] (4) Intermediate annealing: After cutting the hot-rolled sheet to length, heat it to 44...

Embodiment 2

[0058] A preparation method of 6009 aluminum alloy plate, comprising the following steps:

[0059] (1) Ingot preparation: 6009 aluminum alloy ingots were prepared by direct water-cooling semi-continuous casting, with a thickness of 80mm, and the ingredients and their mass percentages were: Si: 0.60%, Mg: 0.80%, Mn: 0.78%, Cu: 0.15%, Fe≤0.50%, Zn≤0.25%, Cr≤0.10%, Ti≤0.10%, impurity elements≤0.15%, the balance is Al;

[0060] (2) Heating: After the 6009 aluminum alloy ingot is cut and milled, it is heated to 280°C in a circulating air furnace, kept for 4 hours, and then heated to 455°C, kept for 4 hours;

[0061] (3) Hot rolling: hot-roll the 6009 aluminum alloy ingot after heat preservation. The hot rolling method is to roll 3 passes along the width direction of the slab, and then roll 10 passes along the length direction of the slab. , rolled into a hot-rolled plate with a thickness of 4mm;

[0062] (4) Intermediate annealing: After cutting the hot-rolled sheet to length, he...

Embodiment 3

[0070] A preparation method of 6009 aluminum alloy plate, comprising the following steps:

[0071] (1) Ingot preparation: 6009 aluminum alloy ingots were prepared by direct water-cooled semi-continuous casting, with a thickness of 100mm, and the ingredients and their mass percentages were: Si: 0.61%, Mg: 0.80%, Mn: 0.78%, Cu: 0.15%, Fe≤0.50%, Zn≤0.25%, Cr≤0.10%, Ti≤0.10%, impurity elements≤0.15%, the balance is Al;

[0072] (2) Heating: After the 6009 aluminum alloy ingot is cut and milled, it is heated to 350°C in a circulating air furnace, kept for 4h, then heated to 430°C, and kept for 3h;

[0073] (3) Hot rolling: hot-roll the 6009 aluminum alloy ingot after heat preservation. The hot rolling method is to roll 5 passes along the width direction of the slab, and then roll 10 passes along the length direction of the slab. , rolled into a hot-rolled plate with a thickness of 3 mm;

[0074] (4) Intermediate annealing: After cutting the hot-rolled sheet to length, heat it to ...

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Abstract

The invention discloses a preparation method of a 6009 aluminum alloy plate. The preparation method comprises the following steps that a 6009 aluminum alloy cast ingot is prepared; the 6009 aluminum alloy cast ingot is heated to 280-380 DEG C, the temperature is kept and increased to 420-460 DEG C, the temperature is kept again, hot rolling is carried out, and a hot rolled plate is obtained; the hot rolled plate is heated to 420-440 DEG C, the temperature is kept, then, furnace cooling is carried out to reach indoor temperature, cold rolling is carried out, and a cold rolled plate is obtained; solid solution treatment, indoor temperature placement, preaging treatment and secondary indoor temperature placement are carried out, the T4P state is formed, and the 6009 aluminum alloy plate is prepared. By means of the method, conventional high-temperature homogenizing treatment on the cast ingot is omitted, the technological process is shortened, energy is saved, the production efficiency is improved, and the cost is greatly reduced; the method can be implemented on an existing aluminum alloy production line, no equipment or technological investment is increased, and operation is easy and convenient; and excess crystal phase particles in the prepared 6009 aluminum alloy plate are small in size and dispersedly distributed, the stamping property of the 6009 aluminum plate can be improved, and the property requirements in the stamping production are completely met while the cost is reduced.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of aluminum alloys, and in particular relates to a preparation method of a 6009 aluminum alloy plate. [0003] Background technique: [0004] Since the car body accounts for about 30% of the weight of the whole vehicle, the use of aluminum alloy instead of steel plate to manufacture the body can reduce the weight of the body by more than 50%, which can significantly reduce the weight of the whole vehicle; under the same impact, the aluminum plate can absorb 50% more impact energy than the steel plate , increasing the safety of the occupants. In addition, the aluminum body basically does not rust during use and has a very high recovery rate. It is an ideal recyclable and environmentally friendly material. Therefore, the urgency and importance of aluminumizing the automobile body are self-evident. The 6xxx aluminum alloy sheet that can be strengthened by heat treatment has become the preferred light-we...

Claims

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Application Information

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IPC IPC(8): C22F1/043C22F1/047C22F1/05C22F1/04
CPCC22F1/04C22F1/043C22F1/047C22F1/05
Inventor 田妮王光东张泽宇许圆贾存发赵刚
Owner NORTHEASTERN UNIV