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A kind of preparation method of 6016 aluminum alloy plate

A technology for aluminum alloy plates and aluminum alloy ingots, which is applied in the field of aluminum alloys, can solve the problems of reducing the formability of plates, increasing production costs, and reducing production efficiency, and achieves the effects of improving deep drawing performance, increasing production efficiency, and saving energy

Active Publication Date: 2018-04-06
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The homogenization treatment temperature of 6016 aluminum alloy ingots generally exceeds 535 ° 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 homogenization treatment will make the alloy mainly contain AlFeMnSi The excess crystalline phase is spheroidized, coarsened and distributed along the dendrite boundary, which may reduce the formability of subsequent sheets

Method used

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  • A kind of preparation method of 6016 aluminum alloy plate
  • A kind of preparation method of 6016 aluminum alloy plate
  • A kind of preparation method of 6016 aluminum alloy plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of 6016 aluminum alloy plate, comprising the following steps:

[0029] (1) Ingot preparation: 6016 aluminum alloy ingots were prepared by direct water-cooling semi-continuous casting, with a thickness of 150mm, and the ingredients and their mass percentages were: Si: 1.00%, Mg: 0.60%, Cu≤0.20%, Mn≤ 0.20%, Fe≤0.50%, Zn≤0.20%, Cr≤0.10%, Ti≤0.15%, impurity elements≤0.15%, the balance is Al;

[0030] (2) Heating: After the 6016 aluminum alloy ingot is cut and milled, it is heated to 435°C in a circulating air furnace and kept for 5 hours;

[0031] (3) Hot rolling: hot rolling the 6016 aluminum alloy ingot after heat preservation, first rolling 4 passes along the width direction of the slab ingot, and then rolling 11 passes along the length direction of the slab ingot to obtain Hot-rolled sheet; wherein, the thickness of the hot-rolled sheet is 3mm;

[0032] (4) Intermediate annealing: After cutting the hot-rolled sheet to length, heat it to 430°C in a...

Embodiment 2

[0053] A preparation method of 6016 aluminum alloy plate, comprising the following steps:

[0054] (1) Ingot preparation: 6016 aluminum alloy ingots were prepared by direct water-cooled semi-continuous casting, with a thickness of 120mm, and the ingredients and their mass percentages were: Si: 1.04%, Mg: 0.59%, Cu≤0.20%, Mn≤ 0.20%, Fe≤0.50%, Zn≤0.20%, Cr≤0.10%, Ti≤0.15%, impurity elements≤0.15%, the balance is Al;

[0055] (2) Heating: After the 6016 aluminum alloy ingot is cut and milled, it is heated to 405°C in a circulating air furnace and kept for 5 hours;

[0056] (3) Hot rolling: hot-rolling the 6016 aluminum alloy ingot after heat preservation, first rolling 5 passes along the width direction of the slab ingot, and then rolling 10 passes along the length direction of the slab ingot to obtain Hot-rolled sheet; wherein, the thickness of the hot-rolled sheet is 3mm;

[0057] (4) Intermediate annealing: After cutting the hot-rolled sheet to length, heat it to 440°C in a ...

Embodiment 3

[0065] A preparation method of 6016 aluminum alloy plate, comprising the following steps:

[0066] (1) Ingot preparation: 6016 aluminum alloy ingots were prepared by direct water-cooling semi-continuous casting, with a thickness of 150mm, and the ingredients and their mass percentages were: Si: 1.04%, Mg: 0.59%, Cu≤0.20%, Mn≤ 0.20%, Fe≤0.50%, Zn≤0.20%, Cr≤0.10%, Ti≤0.15%, impurity elements≤0.15%, the balance is Al;

[0067] (2) Heating: After the 6016 aluminum alloy ingot is cut and milled, it is heated to 460°C in a circulating air furnace and kept for 3 hours;

[0068] (3) Hot rolling: hot rolling the 6016 aluminum alloy ingot after heat preservation, first rolling 3 passes along the width direction of the slab ingot, and then rolling 14 passes along the length direction of the slab ingot to obtain Hot-rolled plate; wherein, the thickness of the hot-rolled plate is 6mm;

[0069] (4) Intermediate annealing: After cutting the hot-rolled sheet to length, heat it to 435°C in a...

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Abstract

A method for preparing a 6016 aluminum alloy plate, including the following steps: preparing a 6016 aluminum alloy ingot; heating it to 400-460°C, hot-rolling it after insulation to obtain a hot-rolled plate; heating the hot-rolled plate to 420-440°C, After heat preservation, the furnace is cooled to room temperature and cold-rolled to obtain a cold-rolled plate; then it undergoes solution treatment, room temperature storage, pre-aging treatment, and room temperature storage again, which is the T4P state, and a 6016 aluminum alloy plate is obtained. This method reduces the conventional high-temperature homogenization treatment of ingots, shortens the process flow, saves energy, improves production efficiency, and significantly reduces costs; it can be implemented on existing aluminum alloy production lines without increasing investment in equipment and processes, and is simple and convenient to operate; The excess crystalline phase particles in the prepared 6016 aluminum alloy plate are small in size and dispersedly distributed, which is beneficial to improving the stamping performance of the 6016 aluminum plate, achieving cost reduction while fully meeting the performance requirements in stamping production.

Description

Technical field: [0001] The invention belongs to the technical field of aluminum alloys, and in particular relates to a preparation method of 6016 aluminum alloy plates. Background technique: [0002] The 6xxx aluminum alloy sheet that can be strengthened by heat treatment has become the preferred light-weight automobile body panel material due to its high specific strength, good formability, bake hardening ability, corrosion resistance and easy recycling. The types of aluminum sheets used to produce automobile bodies in the past mainly include 6009-T4P, 6010-T4P, 6111-T4P, 6016-T4P, 6022-T4P, etc. Among them, Europe and Japan favor the use of 6016 alloy sheets with low content of alloying elements. The strength after baking is low, but the formability is very good and Lüders bands will not appear during stamping. However, the current material cost of aluminum alloy body panels is 2 to 4 times that of traditional body panel materials - steel plates, which seriously hinders ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22F1/043
CPCC22C21/02C22F1/043
Inventor 王光东张泽宇贾存发许圆田妮赵刚
Owner NORTHEASTERN UNIV LIAONING