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Preparation method IXXX negative electrode foil for aluminum electrolyte capacitor

A technology of aluminum electrolytic capacitors and cathode foils, applied in the direction of electrolytic capacitors, capacitor electrodes, capacitors, etc., can solve problems such as cracks and poor plate shape, easy deviation during hot rolling, uneven ingot structure, etc., reaching the second The phase distribution is uniform, which is beneficial to the uniformity of corrosion and the effect of avoiding uneven structure

Active Publication Date: 2019-07-26
RUYUAN DONGYANG UACJ PRECISION FOIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome defects and deficiencies such as inhomogeneous ingot structure that is prone to occur in the preparation process of the existing 1XXX series cathode foil for aluminum electrolytic capacitors, deviation, cracks and poor plate shape in the hot rolling process, and provides A kind of manufacturing method of 1XXX series cathode foil for aluminum electrolytic capacitor

Method used

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  • Preparation method IXXX negative electrode foil for aluminum electrolyte capacitor
  • Preparation method IXXX negative electrode foil for aluminum electrolyte capacitor
  • Preparation method IXXX negative electrode foil for aluminum electrolyte capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A kind of manufacturing method of 1XXX series cathode foil for aluminum electrolytic capacitor, the method comprises the following steps:

[0051] S1. Prepare casting and rolling blanks according to the following components and mass percentages: mix ingredients according to the alloy composition in Table 1, control the temperature of the melting furnace at 745°C, feed nitrogen, refine for 15 minutes, remove slag and stir sufficiently, take samples, analyze and adjust after passing the test. Put it into the static furnace, stand still for 20 minutes, the temperature of the static furnace is 736°C, refine and remove the slag in the static furnace, use a silicon nitride rotor for degassing at 505rpm, and then send it to the casting-rolling machine, the casting-rolling temperature is 697°C, the casting-rolling speed is 730mm / min, the casting-rolling Finally, a 7.1mm cast-rolled coil is obtained;

[0052] S2. Cold rolling and foil rolling: cold rolling and foil rolling the c...

Embodiment 2

[0058] Obtain cast-rolled coil according to embodiment 1, cast-rolled coil is through cold-rolling-edge trimming-cold rolling-edge trimming-intermediate cleaning-foil rolling to finished product thickness-finished product cleaning-slitting-finished product annealing, before rolling to finished product thickness Any heat treatment is required, the thickness of the finished product is 0.050mm, the product state is O state, the annealing process of the finished product: 305°C*25h, the product strength is 56MPa, the specific volume of the product is qualified after the trial by the customer B manufacturer, reaching 100.6% of the specific volume of the hot-rolled material .

Embodiment 3

[0060] A kind of manufacturing method of 1XXX series cathode foil for aluminum electrolytic capacitor, the method comprises the following steps:

[0061] S1. Prepare casting and rolling blanks according to the following components and mass percentages: mix ingredients according to the alloy composition in Table 1, control the temperature of the melting furnace at 737°C, feed nitrogen, refine for 15 minutes, remove slag, stir well, take samples, analyze and adjust after passing the test. Put it into the static furnace, stand still for 20 minutes, the temperature of the static furnace is 730°C, refine and remove the slag in the static furnace, use a silicon nitride rotor to degas at 505rpm, and then send it to the casting and rolling machine, the casting temperature is 688°C, the casting and rolling speed is 950mm / min, the casting and rolling Finally, a 5.8mm cast-rolled coil is obtained;

[0062] S2. Cold rolling and foil rolling: cold rolling and foil rolling the casting bille...

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Abstract

The invention discloses a production method of an IXXX negative electrode foil for an aluminum electrolyte capacitor. The method comprises the following steps of fabricating a casting blank being 5.5-7.5 millimeters according to constituent and mass percent; and performing cold rolling and foil rolling, in which the IXXX negative electrode foil being 0.02-0.06 millimeter is obtained by cold rolling and foil rolling on the casting blank. According to the manufacturing method, a series of problems such as rough ingot casting tissue of the IXXX negative electrode foil product for the aluminum electrolytic capacitor due to production of a hot rolling method, rolling deviation, crack, plate unfavorableness, low yield and potential risk caused by asymmetry can be prevented, the size of a secondphase is slimmer than that of the product produced by the hot rolling method after the produced casting roll is rolled to a finished product thickness, the second phase distribution is more uniform than the second phase distribution of the finished product rolled by the hot rolling method, the corrosion uniformity of the IXXX negative electrode foil for the aluminum electrolyte capacitor is more facilitated, the finished product thickness is 0.020-0.060 millimeter, the tensile strength of O-state or H22 negative electrode foil is 55-100MPA, the tensile strength of an H18 negative electrode foil is larger than or equal to 170MPa, and the tensile strength of an H24 negative electrode foil is 110-150MPa.

Description

technical field [0001] The invention relates to the technical field of aluminum foil for aluminum electrolytic capacitors, and more specifically, to a preparation method of 1XXX series cathode foil for aluminum electrolytic capacitors. Background technique [0002] Cathode electronic aluminum foil is one of the important raw materials for manufacturing aluminum electrolytic capacitors. The commonly used materials currently used to prepare cathode electronic aluminum foil are pure aluminum (1XXX series), aluminum copper (2XXX) and aluminum manganese (3XXX). In the existing published literature, the 1XXX series cathode foils for aluminum electrolytic capacitors produced by the cast-rolling method usually need to be heat-treated during the process of rolling the cast-rolled coil to the finished thickness, or are produced by the hot-rolling method. The prior art CN105908021A discloses a pure aluminum cathode foil for capacitors and its manufacture, which aims at the problem of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/04H01G9/045C22C21/00C22C1/06C22C1/02C22F1/04C21D9/46B21B1/40
CPCH01G9/04H01G9/045C22C21/00C22C1/06C22C1/026C22F1/04C21D9/46B21B1/40H01G9/0425H01G9/048
Inventor 廖孝艳曹汉权朱灵斐池国明
Owner RUYUAN DONGYANG UACJ PRECISION FOIL CO LTD
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