CN103409783B - A kind of method of aluminium alloy BSL102 sulphuric acid anodizing - Google Patents

A kind of method of aluminium alloy BSL102 sulphuric acid anodizing Download PDF

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CN103409783B
CN103409783B CN201310305173.XA CN201310305173A CN103409783B CN 103409783 B CN103409783 B CN 103409783B CN 201310305173 A CN201310305173 A CN 201310305173A CN 103409783 B CN103409783 B CN 103409783B
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acid anodizing
sulphuric acid
bsl102
anodizing
voltage
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CN103409783A (en
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夏兆蓉
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Guizhou Honglin Machinery Co Ltd
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Guizhou Honglin Machinery Co Ltd
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Abstract

A kind of method that the invention discloses aluminium alloy BSL102 sulphuric acid anodizing, comprises the following steps: workpiece routine pre-treatment;Sulfur acid anodizing: tank liquor composition is sulphuric acid 180~200g/L, aluminium ion≤25g/L, copper≤75ppm, ferrum≤200ppm, chloride ion≤0.2g/L;Oxide on wiping anode and cathode contact rod or erosion before sulfur acid anodizing, it is ensured that well conducting;Stereotype selected by sulfur acid anodizing minus plate;Aluminum hanger dress is used to hang product;Product enters groove makes each position homogeneous temperature in tank liquor;Opening refrigeration plant, temperature controls at 15~17 DEG C;The hanger that will be equipped with product hangs on anode stub, turns on the power, and arranges voltage 22~24V, and in 2~3 minutes, voltage is slowly increased to arrange voltage, total time 55~65 minutes from 0V;Conventional post processing.Inventive film layer thickness is high, oxidation film layer uniformity, continuously and without loose.

Description

A kind of method of aluminium alloy BSL102 sulphuric acid anodizing
Technical field
The present invention relates to field of metal surface treatment technology, a kind of method to aluminium alloy BSL102 sulphuric acid anodizing.
Background technology
Aluminium alloy BSL102 material class workpiece carries out sulphuric acid anodizing, require shape film forming layer appearance uniform consistent, continuous (without hole point, corrosion etc.), without loose membrane layer, sulfur acid anodizing thicknesses of layers controls at 10 ~ 25 microns, and the film layer to dyeing, thicknesses of layers controls at 15 ~ 25 microns.
At present, when BSL102 material work piece is carried out sulfur acid anodizing, used constant-voltage method, temperature 20 ± 1.5 DEG C, voltage 18V, it is will be through defat, washing, activate and wash the clean lower drill traverse of BSL102 material class workpiece energising and enter in sulfuric acid solution, workpiece is as anode, negative electrode uses stereotype to make, anodic oxidation is carried out at a temperature of 20 DEG C, surface of the work is made to generate one layer of sulfur acid anodizing film layer, during actual processing part, thicknesses of layers at most can only achieve 13 microns, and workpiece thicknesses of layers requirement of dyeing is at 15 ~ 25 microns, thicknesses of layers grows into 13 microns and starts to occur loose, up to 17 microns.
Summary of the invention
A kind of thicknesses of layers that it is an object of the invention to overcome disadvantages mentioned above and provide is high, oxidation film layer uniformity, continuously and without the method for loose aluminium alloy BSL102 sulphuric acid anodizing.
The method of a kind of aluminium alloy BSL102 sulphuric acid anodizing of the present invention, comprises the following steps:
(1) workpiece routine pre-treatment;
(2) sulfur acid anodizing:
A, deionized water: water pH value is 6~8, resistivity >=10000 Ω/cm, chloride≤5ppm, silicon≤1ppm;
Tank liquor composition: sulphuric acid 180~200g/L, aluminium ion≤25g/L, copper≤75ppm, ferrum≤200ppm, chloride ion≤0.2g/L;
Compound method: first inject the deionized water of half volume before preparation tank liquor in sulfur acid anodizing groove, adds the sulphuric acid measured slowly in trough, and stirring is allowed to be completely dissolved, and finally adds water to the volume of regulation, stirs tank liquor;
Oxide on wiping anode and cathode contact rod or erosion before b, sulfur acid anodizing, it is ensured that well conducting;
Stereotype selected by sulfur acid anodizing minus plate;
Aluminum hanger dress is used to hang product;
C, product enter the compressed air of at least 5 minutes front opening stirring tank liquors of groove, make each position homogeneous temperature in tank liquor;
Opening refrigeration plant, temperature controls at 15~17 DEG C;
The hanger that will be equipped with product hangs on anode stub, turns on the power, and arranges voltage 22~24V, and in 2~3 minutes, voltage is slowly increased to arrange voltage, total time 55~65 minutes from 0V;
(3) conventional post processing.
The method of above-mentioned aluminium alloy BSL102 sulphuric acid anodizing, wherein: workpiece routine pre-treatment is by alkali degreasing, hot water wash, flowing cool water are washed, nitric acid gloss.
The method of above-mentioned aluminium alloy BSL102 sulphuric acid anodizing, wherein: conventional post processing is by that flowing cool water is washed, sealing treatment, flowing cool water are washed, hot water wash, compressed air dry up or not higher than 75 DEG C temperature are dried.
The present invention is compared with prior art, there is obvious beneficial effect, as can be known from the above technical solutions: the present invention uses the sulfuric acid solution of 15%wt to carry out anode electrochemical process, room temperature constant-voltage method, its workpiece is put in the tank liquor that sulfuric acid solution content is 180 ~ 200g/L and carry out sulfur acid anodizing, temperature 15 ~ 17 DEG C, voltage 22 ~ 24V, 2 ~ 3 minutes are delayed, 55 ~ 65 minutes total times.Through inventor's validation trial, use low temperature, high pressure, the sulfur acid anodizing technique of dilution heat of sulfuric acid, preferable anodic film layer can be obtained, even film layer is consistent, continuous and nothing is loose, thicknesses of layers reaches more than 25 microns, standard higher than 15 microns, film layer is fine and close, and this technique is applicable to the product that aluminium alloy BSL102 sulfur acid anodizing thicknesses of layers requirement is high.
The detailed description of the invention of the present invention is shown in detail in by following example.
Detailed description of the invention
Describe the present invention below in conjunction with example, be explained further and illustrate technical scheme feature.
Embodiment 1 :
A kind of method of aluminium alloy BSL102 sulphuric acid anodizing, comprises the following steps:
(1) alkali degreasing, hot water wash, flowing cool water wash, nitric acid gloss;
(2) sulfur acid anodizing:
A, deionized water: water pH value is 6~8, resistivity >=10000 Ω/cm, chloride≤5ppm, silicon≤1ppm;
Tank liquor composition: sulphuric acid 180~200g/L, aluminium ion≤25g/L, copper≤75ppm, ferrum≤200ppm, chloride ion≤0.2g/L;
Compound method: first inject the deionized water of half volume before preparation tank liquor in sulfur acid anodizing groove, adds the sulphuric acid measured slowly in trough, and stirring is allowed to be completely dissolved, and finally adds water to the volume of regulation, stirs tank liquor;
Oxide on wiping anode and cathode contact rod or erosion before b, sulfur acid anodizing, it is ensured that well conducting;
Stereotype selected by sulfur acid anodizing minus plate;
Aluminum hanger dress is used to hang product;
C, product enter the compressed air of at least 5 minutes front opening stirring tank liquors of groove, make each position homogeneous temperature in tank liquor;
Opening refrigeration plant, temperature controls at 15~17 DEG C;
The hanger that will be equipped with product hangs on anode stub, turns on the power, and arranges voltage 22~24V, and in 2~3 minutes, voltage is slowly increased to arrange voltage, 55 minutes total times from 0V;
(3) flowing cool water is washed, sealing treatment, flowing cool water are washed, hot water wash, compressed air dry up or not higher than 75 DEG C temperature are dried.
Consistent by the sulfur acid anodizing even film layer of process above method processing, continuously and without loose phenomenon, thickness, at 15~17 microns, meets process specifications.
Embodiment 2 :
A kind of method of aluminium alloy BSL102 sulphuric acid anodizing, comprises the following steps:
(1) alkali degreasing, hot water wash, flowing cool water wash, nitric acid gloss;
(2) sulfur acid anodizing:
A, deionized water: water pH value is 6~8, resistivity >=10000 Ω/cm, chloride≤5ppm, silicon≤1ppm.
Tank liquor composition: sulphuric acid 180~200g/L, aluminium ion≤25g/L, copper≤75ppm, ferrum :≤200ppm, chloride ion≤0.2g/L;
Compound method: first inject the deionized water of half volume before preparation tank liquor in sulfur acid anodizing groove, adds the sulphuric acid measured slowly in trough, and stirring is allowed to be completely dissolved, and finally adds water to the volume of regulation, stirs tank liquor;
Oxide on wiping anode and cathode contact rod or erosion before b, sulfur acid anodizing, it is ensured that well conducting;
Stereotype selected by sulfur acid anodizing minus plate;
Aluminum hanger dress is used to hang product;
C, product enter the compressed air of at least 5 minutes front opening stirring tank liquors of groove, make each position homogeneous temperature in tank liquor;
Opening refrigeration plant, temperature controls at 15~17 DEG C;
The hanger that will be equipped with product hangs on anode stub, turns on the power, and arranges voltage 22~24V, and in 2~3 minutes, voltage is slowly increased to arrange voltage, 65 minutes total times from 0V;
(3) flowing cool water is washed, sealing treatment, flowing cool water are washed, hot water wash, compressed air dry up or not higher than 75 DEG C temperature are dried.
Consistent by the sulfur acid anodizing even film layer of process above method processing, continuously and without loose phenomenon, thickness, at 23~25 microns, meets process specifications.
The above, it it is only presently preferred embodiments of the present invention, not the present invention is made any pro forma restriction, any without departing from technical solution of the present invention content, any simple modification, equivalent variations and the modification made above example according to the technical spirit of the present invention, all still falls within the range of technical solution of the present invention.

Claims (3)

1. a method for aluminium alloy BSL102 sulphuric acid anodizing, comprises the following steps:
(1) workpiece routine pre-treatment;
(2) sulfur acid anodizing:
A, deionized water: water pH value is 6~8, resistivity >=10000 Ω/cm, chloride≤5ppm, silicon≤1ppm;
Tank liquor composition: sulphuric acid 180~200g/L, aluminium ion≤25g/L, copper≤75ppm, ferrum≤200ppm, chloride ion≤0.2g/L;
Compound method: first inject the deionized water of half volume before preparation tank liquor in sulfur acid anodizing groove, adds the sulphuric acid measured slowly in trough, and stirring is allowed to be completely dissolved, and finally adds water to the volume of regulation, stirs tank liquor;
Oxide on wiping anode and cathode contact rod or erosion before b, sulfur acid anodizing, it is ensured that well conducting;
Stereotype selected by sulfur acid anodizing minus plate;
Aluminum hanger dress is used to hang product;
C, product enter the compressed air of at least 5 minutes front opening stirring tank liquors of groove, make each position homogeneous temperature in tank liquor;
Opening refrigeration plant, temperature controls at 15~17 DEG C;
The hanger that will be equipped with product hangs on anode stub, turns on the power, and arranges voltage 22~24V, and in 2~3 minutes, voltage is slowly increased to arrange voltage, total time 55~65 minutes from 0V;
(3) conventional post processing.
2. the method for aluminium alloy BSL102 sulphuric acid anodizing as claimed in claim 1, wherein: workpiece routine pre-treatment is by alkali degreasing, hot water wash, flowing cool water are washed, nitric acid gloss.
3. the method for aluminium alloy BSL102 sulphuric acid anodizing as claimed in claim 1, wherein: conventional post processing is by that flowing cool water is washed, sealing treatment, flowing cool water are washed, hot water wash, compressed air dry up or not higher than 75 DEG C temperature are dried.
CN201310305173.XA 2013-07-20 2013-07-20 A kind of method of aluminium alloy BSL102 sulphuric acid anodizing Active CN103409783B (en)

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CN104711652A (en) * 2013-12-11 2015-06-17 贵州红林机械有限公司 High-hardness hard anodization technology for processing hard aluminum alloy

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10288850A (en) * 1997-04-14 1998-10-27 Fuji Electric Co Ltd Electrophotographic photoreceptor substrate and electrophotographic photoreceptor
CN101476144A (en) * 2008-11-20 2009-07-08 贵州红林机械有限公司 Complex acid and oxalic acid anodization method for processing aluminum and aluminum alloy

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Publication number Priority date Publication date Assignee Title
US20040050709A1 (en) * 2002-09-17 2004-03-18 The Boeing Company Accelerated sulfuric acid and boric sulfuric acid anodize process

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10288850A (en) * 1997-04-14 1998-10-27 Fuji Electric Co Ltd Electrophotographic photoreceptor substrate and electrophotographic photoreceptor
CN101476144A (en) * 2008-11-20 2009-07-08 贵州红林机械有限公司 Complex acid and oxalic acid anodization method for processing aluminum and aluminum alloy

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