CN106894066A - A kind of artificial stainless steel matt aluminium section bar coloring process - Google Patents
A kind of artificial stainless steel matt aluminium section bar coloring process Download PDFInfo
- Publication number
- CN106894066A CN106894066A CN201710137238.2A CN201710137238A CN106894066A CN 106894066 A CN106894066 A CN 106894066A CN 201710137238 A CN201710137238 A CN 201710137238A CN 106894066 A CN106894066 A CN 106894066A
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- China
- Prior art keywords
- section bar
- aluminium section
- stainless steel
- nickel
- chromium
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
- C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/20—Electroplating using ultrasonics, vibrations
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Coating With Molten Metal (AREA)
Abstract
The present invention relates to a kind of artificial stainless steel matt aluminium section bar coloring process, comprise the following steps：The first step, cleaning；Second step, caustic corrosion；3rd step, neutralizes；4th step, a nickel plating, one time nickel plating layer thick is less than 0.01mm；5th step, chromium plating, using the chromic acid that mass concentration is 18%~22%, is vibrated using ultrasonic wave to electroplate liquid, and electrolyte is heated, temperature control at 40~55 DEG C, in a foreign-plated one layer of nitride layer containing chromium of nickel coating；6th step, toxicity neutralize, aluminium section bar clean with water, then using the sodium metabisulfite solution that mass concentration is 32%~35% by the Cr VI in nitride layer containing chromium be converted into nontoxic trivalent chromium；7th step, secondary nickel plating, aluminium section bar is cleaned with water, plates last layer nickel again outside nitride layer containing chromium, and the thickness of secondary nickel coating is less than 0.02mm.
Description
Technical field
The present invention relates to a kind of artificial stainless steel matt aluminium section bar coloring process.
Background technology
Chinese Patent Application No.：00110030.0 discloses a kind of aluminium section bar electrolytic coloring technology.Feature is conventional
In anode oxidation coloration technique, extend the caustic corrosion time, to form the matt effect of section bar, tin is then selected in electrolytic coloring
Nickel salt-mixture, obtains the unique artificial stainless steel colour of novel appearance sub- using the electrochemical method of low-voltage short time electrolytic coloring
Light section bar.
In addition, Chinese Patent Application No.：201210390603.8 also disclose that science and engineering at a kind of artificial stainless steel aluminium material surface
Skill, is related to aluminium material surface processing technology field, and its technological process includes：(i), processed at the beginning of surface：A, oil removing；B, decontamination；C, anode
Oxidation；D, coloring；E, first sealing of hole；(ii), surface reprocessing：F, compo spraying；G, solidification.Aluminium product table after treatment
Face, not only with hardness and intensity higher but also with bright and new color and luster and the features such as longer time can be kept, it is adaptable to locate
Panel and section bar that reason aluminium makes, shades of colour.
Above-mentioned coloring process is that can form coating in aluminium shape surface, but previous technology is due to level at that time
The aspects such as limitation, life-span, the durability of its coating cannot be applicable existing industrial production, gradually be eliminated；And latter
Color technique cannot more but form matt color and luster, and the physical property on surface, life-span are also unsatisfactory.
The content of the invention
Therefore, for above-mentioned problem, the present invention proposes that a kind of good physical performance, shelf life be high, chemical stability is good
Artificial stainless steel matt aluminium section bar coloring process.
To achieve the above object, present invention employs following technical scheme：A kind of artificial stainless steel matt aluminium section bar colourer
Skill, comprises the following steps：
The first step, cleaning；
Second step, caustic corrosion；
3rd step, neutralizes；
4th step, a nickel plating, one time nickel plating layer thick is less than 0.01mm；
5th step, chromium plating, using the chromic acid that mass concentration is 18%~22%, is shaken using ultrasonic wave to electroplate liquid
Swing, and electrolyte heated, temperature control at 40~55 DEG C, in a foreign-plated one layer of nitride layer containing chromium of nickel coating；
6th step, toxicity is neutralized, and aluminium section bar is cleaned with water, then using the pyrosulfurous acid that mass concentration is 32%~35%
Sodium solution in the Cr VI in nitride layer containing chromium and will be converted into nontoxic trivalent chromium；
7th step, secondary nickel plating, aluminium section bar is cleaned with water, plates last layer nickel, secondary nickel coating again outside nitride layer containing chromium
Thickness be less than 0.02mm.
Further, neutralisation treatment is also carried out between the 4th step and the 5th step, using the sulphur that mass concentration is 5%~15%
In the oxide layer of the aluminium section bar that acid solution will be cleaned and remove, then cleaned up with clear water.
Further, isothermal holding is also carried out after the 7th step, soaking time is 350~450 DEG C, and the time is 1.2~1.8h.
Further, exported after insulation, during output by a plurality of heating ring groups into excessive passage, each heating ring plus
Hot temperature is gradually reduced from the one end near heat-preserving equipment to the other end, near heat-preserving equipment heating ring temperature for 300~
350 DEG C, the temperature away from the heating ring of heat-preserving equipment one end is 30~50 DEG C.
By using preceding solution, the beneficial effects of the invention are as follows：The colourer of this artificial stainless steel matt aluminium section bar
Skill in nickel plating, chromium plating, a toxicity and, the coloring of aluminium section bar is realized by way of secondary nickel plating, form artificial stainless steel
Color, its color vibrated by ultrasonic wave closer to stainless steel to electroplate liquid, can form the plating of matt
Layer so that the effect of plating more preferably, and also using sodium metabisulfite solution by the Cr VI in nitride layer containing chromium be converted into
Nontoxic trivalent chromium, is not detrimental to health, and it is that can more efficiently realize the same of electrodeposited coating to control the thickness of nickel coating
When, cost is reduced, also improve the presentation of surface color, the i.e. presentation of artificial stainless steel colour.
Specific embodiment
In conjunction with specific embodiment, the present invention is further described.
The present embodiment provides a kind of artificial stainless steel matt aluminium section bar coloring process, comprises the following steps：
The first step, cleaning；
Second step, caustic corrosion；
3rd step, neutralizes；
4th step, a nickel plating, one time nickel plating layer thick is less than 0.01mm, using the sulfuric acid solution that mass concentration is 10%
In the oxide layer of the aluminium section bar that will be cleaned and remove, then cleaned up with clear water；
5th step, chromium plating, using the chromic acid that mass concentration is 20%, is vibrated using ultrasonic wave to electroplate liquid, and right
Electrolyte is heated, temperature control at 50 DEG C, in a foreign-plated one layer of nitride layer containing chromium of nickel coating；
6th step, toxicity is neutralized, and aluminium section bar is cleaned with water, then using the sodium metabisulfite solution that mass concentration is 33%
In Cr VI in nitride layer containing chromium and nontoxic trivalent chromium will be converted into；
7th step, secondary nickel plating, aluminium section bar is cleaned with water, plates last layer nickel, secondary nickel coating again outside nitride layer containing chromium
Thickness be less than 0.02mm, also carry out isothermal holding, soaking time is 400 DEG C, and the time is 1.5h, is exported after insulation, during output
By a plurality of heating ring groups into excessive passage, the heating-up temperature of each heating ring near one end of heat-preserving equipment to the other end
Gradually reduce, the temperature near the heating ring of heat-preserving equipment is 325 DEG C, the temperature away from the heating ring of heat-preserving equipment one end is 40
℃。
In above-mentioned 4th step, the mass concentration of sulfuric acid solution can also be any between 5% or 15% or 5%~15%
Numerical value；In above-mentioned 5th step, the mass concentration of chromic acid can also be any value between 18% or 22% or 18%~22%,
And the temperature of electrolyte can be any value between 40~55 DEG C；In above-mentioned 6th step, the paper of sodium metabisulfite solution
Urine concentration can be any value between 32% or 35% or 32%~35%；In above-mentioned 7th step, soaking time can be
Any value between 350~450 DEG C, soaking time can be any value between 1.2~1.8h；In above-mentioned 7th step,
It is any value between 300~350 DEG C near the temperature of the heating ring of heat-preserving equipment, away from the heating ring of heat-preserving equipment one end
Temperature be any value between 30~50 DEG C.
The coloring process of this artificial stainless steel matt aluminium section bar is neutralized by a nickel plating, chromium plating, toxicity, the side of secondary nickel plating
Formula realizes the coloring of aluminium section bar, forms the color of artificial stainless steel, its color closer to stainless steel, and by ultrasonic wave
Electroplate liquid is vibrated, the coating of matt can be formed so that the effect of plating more preferably, and also utilizes sodium pyrosulfite molten
Liquid in the Cr VI in nitride layer containing chromium and will be converted into nontoxic trivalent chromium, not be detrimental to health, and control the thickness of nickel coating
It is while more efficiently can realizing electrodeposited coating, to reduce cost, also improves the presentation of surface color, i.e. artificial stainless steel colour
Presentation.
Although specifically showing and describing the present invention with reference to preferred embodiment, those skilled in the art should be bright
In vain, do not departing from the spirit and scope of the present invention that appended claims are limited, in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (4)
1. a kind of artificial stainless steel matt aluminium section bar coloring process, it is characterised in that comprise the following steps：
The first step, cleaning；
Second step, caustic corrosion；
3rd step, neutralizes；
4th step, a nickel plating, one time nickel plating layer thick is less than 0.01mm；
5th step, chromium plating, using the chromic acid that mass concentration is 18%~22%, is vibrated using ultrasonic wave to electroplate liquid, and
Electrolyte is heated, temperature control at 40~55 DEG C, in a foreign-plated one layer of nitride layer containing chromium of nickel coating；
6th step, toxicity is neutralized, and aluminium section bar is cleaned with water, then molten using the sodium pyrosulfite that mass concentration is 32%~35%
Liquid in the Cr VI in nitride layer containing chromium and will be converted into nontoxic trivalent chromium；
7th step, secondary nickel plating, aluminium section bar is cleaned with water, plates last layer nickel, the thickness of secondary nickel coating again outside nitride layer containing chromium
Degree is less than 0.02mm.
2. a kind of artificial stainless steel matt aluminium section bar coloring process according to claim 1, it is characterised in that：4th step and the 5th step
Between also carry out neutralisation treatment, the oxide layer of the aluminium section bar that will be cleaned using the sulfuric acid solution that mass concentration is 5%~15%
Removal is neutralized, then is cleaned up with clear water.
3. a kind of artificial stainless steel matt aluminium section bar coloring process according to claim 1, it is characterised in that：Also carried out after 7th step
Isothermal holding, soaking time is 350~450 DEG C, and the time is 1.2~1.8h.
4. a kind of artificial stainless steel matt aluminium section bar coloring process according to claim 3, it is characterised in that：Exported after insulation, it is defeated
When going out by a plurality of heating ring groups into excessive passage, the heating-up temperature of each heating ring near one end of heat-preserving equipment to another
One end gradually reduces, and the temperature near the heating ring of heat-preserving equipment is 300~350 DEG C, away from the heating ring of heat-preserving equipment one end
Temperature be 30~50 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710137238.2A CN106894066B (en) | 2017-03-09 | 2017-03-09 | A kind of artificial stainless steel matt aluminum profile coloring process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710137238.2A CN106894066B (en) | 2017-03-09 | 2017-03-09 | A kind of artificial stainless steel matt aluminum profile coloring process |
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| Publication Number | Publication Date |
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| CN106894066A true CN106894066A (en) | 2017-06-27 |
| CN106894066B CN106894066B (en) | 2018-11-30 |
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| CN201710137238.2A Active CN106894066B (en) | 2017-03-09 | 2017-03-09 | A kind of artificial stainless steel matt aluminum profile coloring process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344037A (en) * | 2018-04-07 | 2019-10-18 | 天津艾普斯工业铝型材股份有限公司 | A kind of aluminium shape surface processing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5057929A (en) * | 1973-09-25 | 1975-05-20 | ||
| JPH07316877A (en) * | 1994-05-20 | 1995-12-05 | Suzuki Motor Corp | Plating layer structure of aluminum die casting |
| CN101775593A (en) * | 2010-02-09 | 2010-07-14 | 浙江大学 | Heat treatment method of ultrahard aluminum alloy after chemical nickel-plating |
| CN102560579A (en) * | 2011-12-10 | 2012-07-11 | 中国振华集团永光电子有限公司 | Nickel plating method for silicon-aluminum alloy |
| CN105349971A (en) * | 2015-10-29 | 2016-02-24 | 无锡桥阳机械制造有限公司 | Aluminum alloy surface modification technology |
| CN106119623A (en) * | 2016-07-01 | 2016-11-16 | 宁波东浩铸业有限公司 | A kind of end cover of engine |
-
2017
- 2017-03-09 CN CN201710137238.2A patent/CN106894066B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5057929A (en) * | 1973-09-25 | 1975-05-20 | ||
| JPH07316877A (en) * | 1994-05-20 | 1995-12-05 | Suzuki Motor Corp | Plating layer structure of aluminum die casting |
| CN101775593A (en) * | 2010-02-09 | 2010-07-14 | 浙江大学 | Heat treatment method of ultrahard aluminum alloy after chemical nickel-plating |
| CN102560579A (en) * | 2011-12-10 | 2012-07-11 | 中国振华集团永光电子有限公司 | Nickel plating method for silicon-aluminum alloy |
| CN105349971A (en) * | 2015-10-29 | 2016-02-24 | 无锡桥阳机械制造有限公司 | Aluminum alloy surface modification technology |
| CN106119623A (en) * | 2016-07-01 | 2016-11-16 | 宁波东浩铸业有限公司 | A kind of end cover of engine |
Non-Patent Citations (4)
| Title |
|---|
| 张允诚等: "《电镀手册（第2版）上册》", 31 July 1997 * |
| ***等: ""铝及铝合金零件的镀镍"", 《航天工艺》 * |
| 章贤昌: ""电镀重金属离子混合废水处理工艺（气浮法）"", 《电镀与涂饰》 * |
| 高建勋: ""铸铝件装饰性镀铬"", 《电镀与环保》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344037A (en) * | 2018-04-07 | 2019-10-18 | 天津艾普斯工业铝型材股份有限公司 | A kind of aluminium shape surface processing method |
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| CN106894066B (en) | 2018-11-30 |
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