6000-series high-performance aluminum alloy plate for automobile panel and manufacturing method thereof

Abstract

The invention relates to a 6000-series high-performance aluminum alloy plate for an automobile panel and a manufacturing method thereof. The 6000-series high-performance aluminum alloy plate contains Si, Fe, Cu, Mn and Mg and comprises a 6016 high-performance aluminum alloy plate, a 6022 high-performance aluminum alloy plate and a 6111 high-performance aluminum alloy plate. The manufacturing method comprises the following steps: adding an alloy, determining a metallographical refinement level, casting an aluminum plate ingot of a certain thickness, carrying out mechanical cold working to a certain process dimension, determining gate arrangements, rolling reductions and front and back tensile forces for hot rolling and cold rolling, carrying out recrystallization annealing at 370-390 DEG C for 10-20 minutes, thereby manufacturing the 6000-series high-performance aluminum alloy plate for an automobile panel. Thus, the invention achieves the purposes of automobile weight reduction, energy conservation and emission reduction.

Description

technical field

[0001] The invention relates to a 6000-series aluminum alloy plate, in particular to a 6000-series high-performance aluminum alloy plate for automobile cover parts and a manufacturing method thereof. Background technique

[0002] In recent years, with the development of the automobile industry and the increase in car ownership, the three major issues of energy consumption, emissions and safety have become increasingly prominent. In 2009, the production and sales of automobiles in China reached 13 million, ranking first in the world, and the number of automobiles has exceeded 70 million. Therefore, the task of energy conservation and emission reduction in my country's automobile industry is arduous. A large number of studies have shown that automobile lightweight is an important means of automobile energy saving and emission reduction. Every 10% reduction in the weight of passenger cars can save fuel by 6%-8% and reduce emissions by 4%. Aluminum alloy is an i...

Examples

Embodiment 1

[0038] The aluminum water is in the temperature range of 730-750°C, sampling analysis, adding master alloy Si1.0%, Fe0.035%, Cu<0.009%, Mn0.01%, Mg0.25%, stirring 3-5 times, adding fine The chemical agent aluminum titanium boron controls the metallographic refinement level to the first level, and casts a 400mm thick aluminum plate ingot; first uses mechanical cold processing, and double-sided milling with gantry milling to a thickness of 380mm; then hot rolling: initial rolling into a 25mm thick coil, finishing rolling Roll into 7.5mm thick coils; then cold rolling: the first pass, reduction 40-50%, pre-tension 5.0T-5.6T, post-tension 5.2T-5.8T, rolled to 4.5mm thick coils; followed by recrystallization annealing The temperature is controlled at 370--390°C, the time is controlled at 10-20min, and cooled to room temperature; finally, cold-rolled: to the specified thickness of 0.8-1.0mm, that is, 6016 high-performance aluminum alloy plate.

[0039] The prepared 6016 high-perform...

Embodiment 2

[0041]Aluminum water is in the temperature range of 730-750 ℃, sampling analysis, adding master alloy Si0.8%, Fe0.05%, Cu0.01%, Mn0.002%, Mg0.45%, stirring 3-5 times, adding fine The chemical agent aluminum titanium boron controls the metallographic refinement level to the first level, and casts a 400mm thick aluminum plate ingot; first uses mechanical cold processing, and double-sided milling with gantry milling to a thickness of 380mm; then hot rolling: initial rolling into a 25mm thick coil, finish rolling 7.5mm thick coil; then cold rolling: first pass, reduction 30%-40%, front tension 4.8T-4.9T, post tension 4.8T-5.8T, rolled to 4.5mm thick coil; second recrystallization The annealing temperature is controlled at 370--390°C, the time is controlled at 10-20min, and cooled to room temperature; finally, cold-rolled to a specified thickness of 0.8-1.0mm to obtain a 6022 high-performance aluminum alloy plate.

[0042] The prepared 6022 high-performance aluminum alloy plate has...

Embodiment 3

[0044] The aluminum water is in the temperature range of 730-750°C, sample and analyze, add the master alloy Si0.7%, Fe0.04%, Cu0.5%, Mn0.15%, Mg0.5%, stir 3-5 times, add fine The chemical agent aluminum titanium boron controls the metallographic refinement level to the first level, and casts a 400mm thick aluminum plate ingot; first uses mechanical cold processing, and double-sided milling with gantry milling to a thickness of 380mm; then hot rolling: initial rolling into a 25mm thick coil, finish rolling 7.5mm thick coil; then cold rolling: first pass, reduction 25-30%, pre-tension 3.0-3.6T, post-tension 3.6T-3.9T, rolled to 4.5mm thick coil; followed by recrystallization annealing temperature Control it at 370--390°C, control the time at 10-20min, cool to room temperature; finally cold-roll: to the specified thickness of 0.8-1.0mm, that is, 6111 high-performance aluminum alloy plate.

[0045] The prepared 6111 high-performance aluminum alloy plate has low density and high h...

technical field

[0001] The invention relates to a 6000-series aluminum alloy plate, in particular to a 6000-series high-performance aluminum alloy plate for automobile cover parts and a manufacturing method thereof. Background technique

[0002] In recent years, with the development of the automobile industry and the increase in car ownership, the three major issues of energy consumption, emissions and safety have become increasingly prominent. In 2009, the production and sales of automobiles in China reached 13 million, ranking first in the world, and the number of automobiles has exceeded 70 million. Therefore, the task of energy conservation and emission reduction in my country's automobile industry is arduous. A large number of studies have shown that automobile lightweight is an important means of automobile energy saving and emission reduction. Every 10% reduction in the weight of passenger cars can save fuel by 6%-8% and reduce emissions by 4%. Aluminum alloy is an i...

Examples

Embodiment 1

[0038] The aluminum water is in the temperature range of 730-750°C, sampling analysis, adding master alloy Si1.0%, Fe0.035%, Cu<0.009%, Mn0.01%, Mg0.25%, stirring 3-5 times, adding fine The chemical agent aluminum titanium boron controls the metallographic refinement level to the first level, and casts a 400mm thick aluminum plate ingot; first uses mechanical cold processing, and double-sided milling with gantry milling to a thickness of 380mm; then hot rolling: initial rolling into a 25mm thick coil, finishing rolling Roll into 7.5mm thick coils; then cold rolling: the first pass, reduction 40-50%, pre-tension 5.0T-5.6T, post-tension 5.2T-5.8T, rolled to 4.5mm thick coils; followed by recrystallization annealing The temperature is controlled at 370--390°C, the time is controlled at 10-20min, and cooled to room temperature; finally, cold-rolled: to the specified thickness of 0.8-1.0mm, that is, 6016 high-performance aluminum alloy plate.

[0039] The prepared 6016 high-perform...

Embodiment 2

[0041]Aluminum water is in the temperature range of 730-750 ℃, sampling analysis, adding master alloy Si0.8%, Fe0.05%, Cu0.01%, Mn0.002%, Mg0.45%, stirring 3-5 times, adding fine The chemical agent aluminum titanium boron controls the metallographic refinement level to the first level, and casts a 400mm thick aluminum plate ingot; first uses mechanical cold processing, and double-sided milling with gantry milling to a thickness of 380mm; then hot rolling: initial rolling into a 25mm thick coil, finish rolling 7.5mm thick coil; then cold rolling: first pass, reduction 30%-40%, front tension 4.8T-4.9T, post tension 4.8T-5.8T, rolled to 4.5mm thick coil; second recrystallization The annealing temperature is controlled at 370--390°C, the time is controlled at 10-20min, and cooled to room temperature; finally, cold-rolled to a specified thickness of 0.8-1.0mm to obtain a 6022 high-performance aluminum alloy plate.

[0042] The prepared 6022 high-performance aluminum alloy plate has...

Embodiment 3

[0044] The aluminum water is in the temperature range of 730-750°C, sample and analyze, add the master alloy Si0.7%, Fe0.04%, Cu0.5%, Mn0.15%, Mg0.5%, stir 3-5 times, add fine The chemical agent aluminum titanium boron controls the metallographic refinement level to the first level, and casts a 400mm thick aluminum plate ingot; first uses mechanical cold processing, and double-sided milling with gantry milling to a thickness of 380mm; then hot rolling: initial rolling into a 25mm thick coil, finish rolling 7.5mm thick coil; then cold rolling: first pass, reduction 25-30%, pre-tension 3.0-3.6T, post-tension 3.6T-3.9T, rolled to 4.5mm thick coil; followed by recrystallization annealing temperature Control it at 370--390°C, control the time at 10-20min, cool to room temperature; finally cold-roll: to the specified thickness of 0.8-1.0mm, that is, 6111 high-performance aluminum alloy plate.

[0045] The prepared 6111 high-performance aluminum alloy plate has low density and high h...