Ageing heat treatment process of 3003 aluminium alloy electronic foil

Abstract

Provided is an ageing heat treatment process of a 3003 aluminium alloy electronic foil. When original hot rolling or cast rolling blank is rolled to be in the thickness of 5.0<+ / -0.2>mm, high temperature homogenizing annealing treatment is used, the formation is well-closed, and segregation is weakened. Multi-pass cold rolling is continuously conducted after annealing, and when the thickness of 0.5<+ / -0.05>mm is achieved, a complete annealing treatment process is conducted to weaken residual stress. The multi-pass cold rolling is continuously conducted until the thickness of 0.24<+ / -0.01>mm is achieved, foil rolling is directly converted, when multi-pass foil rolling reaches the thickness of 0.09<+ / -0.005>mm, ageing treatment of 80<+ / -5> DEG C *3<+ / -0.5> h is conducted, and the control over the morphology and the distribution of the second phase of the aluminium alloy electronic foil blank is achieved. The thickness of a finished product of 0.042mm - 0.038mm is achieved through multiple times of foil rolling after the ageing treatment. A specified heat treatment process is conducted on the 3003 aluminium alloy electronic foil blank, the control over the morphology and the distribution of second phase particles (MnAl6 phase) in the 3003 aluminium alloy is achieved, a large number of second phase particles are made to be dispersed and distributed evenly, the blank is used, the corrosion effect in the later period is good, the specific capacitance of the aluminium alloy electronic foil is improved, and 560-595 muF / cm<2> can be achieved.

Description

technical field

[0001] The invention relates to an aging treatment method for a 3003 aluminum alloy electronic foil blank, mainly for producing Aging heat treatment process for electronic aluminum foil blanks for aluminum electrolytic capacitors with high thickness. Background technique

[0002] Aluminum foil is widely used in various fields such as electrical appliances, packaging, and construction. With the development of the times, the application range has also increased, and higher requirements have been put forward for product quality. 3003 aluminum alloy electronic foil is an aluminum foil widely used in aluminum electrolytic capacitors. Due to the rapid development of electronic machines in the direction of short, small, light and thin, the process of miniaturization and miniaturization of aluminum electrolytic capacitors must be accelerated. The key to the miniaturization of aluminum capacitors lies in the large effective surface area of ​​the aluminum electrode ...

Examples

Embodiment 1

[0012] Example 1 3003 hot-rolled billet plan:

[0013] 1) Hot rolled from hot rolled billet to , homogenizing annealing is performed at this thickness, and the annealing mechanism is .

[0014] 2) After four times of cold rolling (after the first pass of cold rolling is , after the second cold rolling pass is , after the third pass of cold rolling is , after the fourth pass of cold rolling is ) process, the thickness, carry out Fully annealed process.

[0015] 3) Continue cold rolling to , and then converted to foil rolling production, after three foil rollings (after the first foil rolling is , after the second foil rolling is , after the third foil rolling is ) process, the thickness, carry out Artificial aging.

[0016] 4) After three times of foil rolling (after the first foil rolling, , after the second foil rolling is , the third foil rolling can be selected to generate according to specific needs Aluminum foil with different thickness ...

Embodiment 2

[0020] Example 2 3003 casting and rolling billet plan:

[0021] 1) Hot rolled from cast billet to , homogenizing annealing is performed at this thickness to make the structure uniform and reduce segregation. The annealing mechanism is .

[0022] 2) After five passes of cold rolling (after the first pass of cold rolling is , after the second cold rolling pass is , after the third pass of cold rolling is , after the fourth pass of cold rolling is , after the fifth pass of cold rolling is ) process, the thickness, carry out Complete annealing process to reduce the residual stress of the tissue.

[0023] 3) Continue cold rolling to , and then converted to foil rolling production, after two foil rollings (after the first foil rolling is , after the second foil rolling is ) process, the thickness, carry out Artificial aging.

[0024] 4) After three times of foil rolling (after the first foil rolling, , after the second foil rolling is , the third foil...

technical field

[0001] The invention relates to an aging treatment method for a 3003 aluminum alloy electronic foil blank, mainly for producing Aging heat treatment process for electronic aluminum foil blanks for aluminum electrolytic capacitors with high thickness. Background technique

[0002] Aluminum foil is widely used in various fields such as electrical appliances, packaging, and construction. With the development of the times, the application range has also increased, and higher requirements have been put forward for product quality. 3003 aluminum alloy electronic foil is an aluminum foil widely used in aluminum electrolytic capacitors. Due to the rapid development of electronic machines in the direction of short, small, light and thin, the process of miniaturization and miniaturization of aluminum electrolytic capacitors must be accelerated. The key to the miniaturization of aluminum capacitors lies in the large effective surface area of ​​the aluminum electrode ...

Examples

Embodiment 1

[0012] Example 1 3003 hot-rolled billet plan:

[0013] 1) Hot rolled from hot rolled billet to , homogenizing annealing is performed at this thickness, and the annealing mechanism is .

[0014] 2) After four times of cold rolling (after the first pass of cold rolling is , after the second cold rolling pass is , after the third pass of cold rolling is , after the fourth pass of cold rolling is ) process, the thickness, carry out Fully annealed process.

[0015] 3) Continue cold rolling to , and then converted to foil rolling production, after three foil rollings (after the first foil rolling is , after the second foil rolling is , after the third foil rolling is ) process, the thickness, carry out Artificial aging.

[0016] 4) After three times of foil rolling (after the first foil rolling, , after the second foil rolling is , the third foil rolling can be selected to generate according to specific needs Aluminum foil with different thickness ...

Embodiment 2

[0020] Example 2 3003 casting and rolling billet plan:

[0021] 1) Hot rolled from cast billet to , homogenizing annealing is performed at this thickness to make the structure uniform and reduce segregation. The annealing mechanism is .

[0022] 2) After five passes of cold rolling (after the first pass of cold rolling is , after the second cold rolling pass is , after the third pass of cold rolling is , after the fourth pass of cold rolling is , after the fifth pass of cold rolling is ) process, the thickness, carry out Complete annealing process to reduce the residual stress of the tissue.

[0023] 3) Continue cold rolling to , and then converted to foil rolling production, after two foil rollings (after the first foil rolling is , after the second foil rolling is ) process, the thickness, carry out Artificial aging.

[0024] 4) After three times of foil rolling (after the first foil rolling, , after the second foil rolling is , the third foil...