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A kind of preparation method of 6111 aluminum alloy plate

A technology of aluminum alloy sheet and aluminum alloy ingot, applied in the field of aluminum alloy, can solve the problems of reducing sheet formability, increasing production cost, reducing production efficiency, etc., and achieves the effects of improving stamping 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 6xxx series aluminum alloy ingots generally exceeds 545 ° 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 the 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 6111 aluminum alloy plate
  • A kind of preparation method of 6111 aluminum alloy plate
  • A kind of preparation method of 6111 aluminum alloy plate

Examples

Experimental program
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Embodiment 1

[0027] A preparation method of 6111 aluminum alloy plate, comprising the following steps:

[0028] (1) Ingot preparation: 6111 aluminum alloy ingots were prepared by direct water-cooling semi-continuous casting, with a thickness of 100mm. The ingredients and their mass percentages were: Si: 1.08%, Mg: 0.66%, Cu: 0.81%, Mn: 0.26%, Fe≤0.40%, Zn≤0.15%, Cr≤0.10%, Ti≤0.10%, impurity elements≤0.15%, the balance is Al;

[0029] (2) Heating: After the 6111 aluminum alloy ingot is cut and milled, it is heated to 415°C in a circulating air furnace, and after holding for 3 hours, it is heated to 460°C and held for 2 hours;

[0030] (3) Hot rolling: hot rolling the 6111 aluminum alloy ingot after heat preservation, first rolling 5 passes along the width direction of the slab ingot, and then rolling 8 passes along the length direction of the slab ingot to obtain Hot-rolled sheet; wherein, the thickness of the hot-rolled sheet is 3.5mm;

[0031] (4) Intermediate annealing: After cutting t...

Embodiment 2

[0052] A preparation method of 6111 aluminum alloy plate, comprising the following steps:

[0053] (1) Ingot preparation: 6111 aluminum alloy ingots were prepared by direct water-cooling semi-continuous casting, with a thickness of 80mm, and the components and their mass percentages were: Si: 0.70%, Mg: 1.00%, Cu: 0.52%, Mn: 0.45%, Fe≤0.40%, Zn≤0.15%, Cr≤0.10%, Ti≤0.10%, impurity elements≤0.15%, the balance is Al;

[0054] (2) Heating: After the 6111 aluminum alloy ingot is cut and milled, it is heated to 350°C in a circulating air furnace, and after 6h of heat preservation, it is heated to 480°C and heat preservation of 2h;

[0055] (3) Hot rolling: hot rolling the 6111 aluminum alloy ingot after heat preservation, first rolling 3 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 6mm;

[0056] (4) Intermediate annealing: Aft...

Embodiment 3

[0064] A preparation method of 6111 aluminum alloy plate, comprising the following steps:

[0065] (1) Ingot preparation: 6111 aluminum alloy ingots were prepared by direct water-cooling semi-continuous casting, with a thickness of 100mm, and the ingredients and their mass percentages were: Si: 0.73%, Mg: 0.98%, Cu: 0.50%, Mn: 0.45%, Fe≤0.40%, Zn≤0.15%, Cr≤0.10%, Ti≤0.10%, impurity elements≤0.15%, the balance is Al;

[0066] (2) Heating: After the 6111 aluminum alloy ingot is cut and milled, it is heated to 400°C in a circulating air furnace, and after 4h of heat preservation, it is heated to 465°C and heat preservation of 3h;

[0067] (3) Hot rolling: hot rolling the 6111 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 plate; wherein, the thickness of the hot-rolled plate is 5mm;

[0068] (4) Intermediate annealing: A...

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Abstract

A method for preparing a 6111 aluminum alloy plate, including the following steps: prepare a 6111 aluminum alloy ingot; heat it to 330-430°C, heat it to 440-480°C after insulation, insulate it again, and hot-roll it to obtain a hot-rolled plate; The hot-rolled plate is heated to 420-440°C, and after insulation, the furnace is cooled to room temperature, and cold-rolled to obtain a cold-rolled plate; then it is subjected to solution treatment, room temperature storage, pre-aging treatment, and room temperature storage again, which is the T4P state. 6111 aluminum alloy plate. 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 6111 aluminum alloy plate are small in size and dispersedly distributed, which is beneficial to improving the stamping performance of the 6111 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 6111 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. Among them, because 6111 aluminum alloy has good deep drawing performance, and the strength of the body-in-white punched out of it exceeds 320MPa after baking paint treatment, which greatly improves the anti-sag performance of automobile components, 6111 aluminum alloy is the most important aluminum alloy in North America. The mainstream of body panel materials. At present, the key problem that leads to the slow process of aluminum alloying of automobile body is that the material cost of aluminum alloy body panel is higher ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C21/08C22C21/18C22C21/16C22F1/043C22F1/047C22F1/057
CPCC22C21/02C22C21/08C22C21/14C22C21/16C22C21/18C22F1/043C22F1/047C22F1/057
Inventor 田妮张泽宇王光东许圆贾存发赵刚
Owner NORTHEASTERN UNIV LIAONING