CN103031552A - Production method for chemically coloring low-chromium stainless steel into black - Google Patents
Production method for chemically coloring low-chromium stainless steel into black Download PDFInfo
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- CN103031552A CN103031552A CN2011103028768A CN201110302876A CN103031552A CN 103031552 A CN103031552 A CN 103031552A CN 2011103028768 A CN2011103028768 A CN 2011103028768A CN 201110302876 A CN201110302876 A CN 201110302876A CN 103031552 A CN103031552 A CN 103031552A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/50—Treatment of iron or alloys based thereon
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- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a production method for chemically coloring low-chromium stainless steel into black. In the conventional stainless steel chemical coloring, a chromium-iron alloy of which the chromium content is over 13 percent is selected mostly, and a process for using high-temperature and high-concentration chromic acid and sulfuric acid is adopted, so that defects on the aspects of the performance of a black film and color control and the defects of high energy consumption, high pollution, high cost and the like exist. Stainless steel of which the chromium content is 11.7-13 percent is taken as a substrate material, and a chemical coloring liquid of a low-temperature, low-concentration and nontoxic oxidant is adopted; and a black oxide film which is dense on the appearance and has luster is formed on the surface of low-chromium stainless steel, and a corrosion resisting effect which is the same as that of high-chromium stainless steel is achieved.
Description
Technical field
The invention belongs to chemistry, field of metallurgy, the content of stating is the treatment process that low Chromium Stainless Steel chemistry black, and its prescription has the characteristics of clean environment firendly, and it can be used for war industry, light industry and material of construction.
Background technology
Nineteen twenty-seven, the Englishman has invented the stainless steel coloring technology, and obtains patent UKP275781, and its content is to obtain the black stainless steel in chromic acid and aqueous sulfuric acid.People obtained again the patent of multiple Color Stainless Steel successively afterwards, but owing to various defectives, failed to apply always.1972, English Patent GB2066791ABS-1,122173,1972 propose Yin Kefa, stainless steel chemical pigmentation begin for the production of.But in the performance of black film, color is controlled, and the aspects such as energy environment protection are Shortcomings also.
Contain the ferrochrome people of chromium more than 11.7% and be referred to as stainless steel; The stainless steel corrosion resistance is good, this is because chromium can reduce the oxidizing electrode current potential effectively, make electropotential by on the occasion of becoming negative value, existing stainless steel chemical pigmentation is mostly selected and is contained chromium 13% above ferrochrome, adopt high temperature, there are high energy consumption in the chromic acid of high density and sulfur process, high pollution, the defective such as expensive.
Summary of the invention
The body material that the present invention adopts is the stainless steel that contains chromium 11.7%--13%, utilizes existing stainless steel chemical pigmenting liquid to process the stainless steel that contains chromium 11.7%--13%, can only obtain without light, and there is the coloring film of corrosion tendency on the surface.
The present invention adopts the chemical pigmenting liquid of low temperature, lower concentration and nontoxic oxygenant; The iron level of low Chromium Stainless Steel is high, the oxidation rate of iron is much higher than chromium, iron slowly is dissolved in the chemical pigmenting liquid, make matrix surface chromium content enrichment occur, the chromium content on stainless steel top layer just progressively increases, make stainless steel surface produce the outward appearance densification, glossiness oxide film, and reach the same anti-corrosion effect of high chromium-stainless steel.
Described low Chromium Stainless Steel chemistry the method for black, chemical stain solution-stabilized, and concentration range is large, the low and wide ranges of temperature.
Described low Chromium Stainless Steel chemistry the method for black, and the colour-change of chemical stain film is slow, favorable reproducibility.
Described low Chromium Stainless Steel chemistry the method for black, chemical stain film even compact, and the ability of anti-fingerprint is strong; Have workability, wear-resisting, corrosion-resistant, the heat-resisting and strong characteristics of anti-ultraviolet property.
Described low Chromium Stainless Steel chemistry the method for black, and the chromium content of body material is the ferrochrome of 11.7%--13%.
Described low Chromium Stainless Steel chemistry the method for black, and pretreatment liquid comprises that concentration is that sulfuric acid and the concentration of 1-10 grams per liter is the hydrogen peroxide of 100-200 grams per liter, and the treatment time is 5-10 minute, and temperature is 25-45 degree centigrade.
Described low Chromium Stainless Steel chemistry the method for black, and chemical pigmenting liquid comprises that sulfuric acid concentration is the 50-200 grams per liter, and nitrate concentration is the 5-20 grams per liter, and ammonium sulfate concentrations is the 10-50 grams per liter, and concentration of benzoic acid is the 0.1-2 grams per liter; Sulfuric acid makes solution keep certain acidity, can increase the solution activity; Nitrate is the oxygenant in the chemical pigmenting liquid; Ammonium sulfate is the stablizer in the chemical pigmenting liquid; Phenylformic acid is the brightening agent in the chemical pigmenting liquid.
Described low Chromium Stainless Steel chemistry the method for black, and the treatment temp of chemical pigmenting liquid is 45-80 degree centigrade, and the time is 20-60 minute.
---flowing water cleaning---chemical stain-----flowing water cleaning------hot water sealing----drying that described low Chromium Stainless Steel chemistry the method for black, and technical process is: pre-treatment
The present invention is further illustrated below in conjunction with embodiment.
Embodiment
Embodiment 1
The first step will be hanged down Chromium Stainless Steel and be carried out pre-treatment, and pretreatment liquid is comprised of the hydrogen peroxide of 5 grams per liter sulfuric acid and 150 grams per liters, 10 minutes time, 35 degrees centigrade of temperature.Taking-up is cleaned with flowing water.
Second step carries out chemical stain with the low Chromium Stainless Steel after the pre-treatment and processes, and the chemical stain liquid formula is sulfuric acid 50 grams per liters, nitrate 5 grams per liters, ammonium sulfate 10 grams per liters, phenylformic acid 0.1 grams per liter; 60 degrees centigrade of temperature, 40 minutes beginning improvement obtained bright black in 60 minutes.Taking-up is cleaned with flowing water.
The 3rd step, the low Chromium Stainless Steel after the chemical stain processing is carried out sealing treatment, confining liquid is distilled water, 70 degrees centigrade of temperature, 5 minutes time.Take out oven dry.
Embodiment 2
The first step will be hanged down Chromium Stainless Steel and be carried out pre-treatment, and pretreatment liquid is comprised of the hydrogen peroxide of 5 grams per liter sulfuric acid and 150 grams per liters, 10 minutes time, 35 degrees centigrade of temperature.Taking-up is cleaned with flowing water.
Second step carries out chemical stain with the low Chromium Stainless Steel after the pre-treatment and processes, and the chemical stain liquid formula is sulfuric acid 60 grams per liters, nitrate 10 grams per liters, ammonium sulfate 20 grams per liters, phenylformic acid 0.5 grams per liter; 70 degrees centigrade of temperature, 30 minutes beginning improvement obtained bright black in 50 minutes.Taking-up is cleaned with flowing water.
The 3rd step, the low Chromium Stainless Steel after the chemical stain processing is carried out sealing treatment, confining liquid is distilled water, 70 degrees centigrade of temperature, 5 minutes time.Take out oven dry.
Embodiment 3
The first step will be hanged down Chromium Stainless Steel and be carried out pre-treatment, and pretreatment liquid is comprised of the hydrogen peroxide of 5 grams per liter sulfuric acid and 150 grams per liters, 10 minutes time, 35 degrees centigrade of temperature.Taking-up is cleaned with flowing water.
Second step carries out chemical stain with the low Chromium Stainless Steel after the pre-treatment and processes, and the chemical stain liquid formula is sulfuric acid 100 grams per liters, nitrate 10 grams per liters, ammonium sulfate 30 grams per liters, phenylformic acid 1 grams per liter; 70 degrees centigrade of temperature, 35 minutes beginning improvement obtained bright black in 45 minutes.Taking-up is cleaned with flowing water.
The 3rd step, the low Chromium Stainless Steel after the chemical stain processing is carried out sealing treatment, confining liquid is distilled water, 70 degrees centigrade of temperature, 5 minutes time.Take out oven dry.
Embodiment 4
The first step will be hanged down Chromium Stainless Steel and be carried out pre-treatment, and pretreatment liquid is comprised of the hydrogen peroxide of 5 grams per liter sulfuric acid and 150 grams per liters, 10 minutes time, 35 degrees centigrade of temperature.Taking-up is cleaned with flowing water.
Second step carries out chemical stain with the low Chromium Stainless Steel after the pre-treatment and processes, and the chemical stain liquid formula is sulfuric acid 120 grams per liters, nitrate 10 grams per liters, ammonium sulfate 40 grams per liters, phenylformic acid 1 grams per liter; 70 degrees centigrade of temperature, 30 minutes beginning improvement obtained bright black in 40 minutes.Taking-up is cleaned with flowing water.
The 3rd step, the low Chromium Stainless Steel after the chemical stain processing is carried out sealing treatment, confining liquid is distilled water, 70 degrees centigrade of temperature, 5 minutes time.Take out oven dry.
Embodiment 5
The first step will be hanged down Chromium Stainless Steel and be carried out pre-treatment, and pretreatment liquid is comprised of the hydrogen peroxide of 5 grams per liter sulfuric acid and 150 grams per liters, 10 minutes time, 35 degrees centigrade of temperature.Taking-up is cleaned with flowing water.
Second step carries out chemical stain with the low Chromium Stainless Steel after the pre-treatment and processes, and the chemical stain liquid formula is sulfuric acid 150 grams per liters, nitrate 15 grams per liters, ammonium sulfate 40 grams per liters, phenylformic acid 1.2 grams per liters; 70 degrees centigrade of temperature, 25 minutes beginning improvement obtained bright black in 35 minutes.Taking-up is cleaned with flowing water.
The 3rd step, the low Chromium Stainless Steel after the chemical stain processing is carried out sealing treatment, confining liquid is distilled water, 70 degrees centigrade of temperature, 5 minutes time.Take out oven dry.
Embodiment 6
The first step will be hanged down Chromium Stainless Steel and be carried out pre-treatment, and pretreatment liquid is comprised of the hydrogen peroxide of 5 grams per liter sulfuric acid and 150 grams per liters, 10 minutes time, 35 degrees centigrade of temperature.Taking-up is cleaned with flowing water.
Second step carries out chemical stain with the low Chromium Stainless Steel after the pre-treatment and processes, and the chemical stain liquid formula is sulfuric acid 150 grams per liters, nitrate 10 grams per liters, ammonium sulfate 40 grams per liters, phenylformic acid 1.5 grams per liters; 80 degrees centigrade of temperature, 20 minutes beginning improvement obtained bright black in 30 minutes.Taking-up is cleaned with flowing water.
The 3rd step, the low Chromium Stainless Steel after the chemical stain processing is carried out sealing treatment, confining liquid is distilled water, 70 degrees centigrade of temperature, 5 minutes time.Take out oven dry.
Embodiment 7
The first step will be hanged down Chromium Stainless Steel and be carried out pre-treatment, and pretreatment liquid is comprised of the hydrogen peroxide of 5 grams per liter sulfuric acid and 150 grams per liters, 10 minutes time, 35 degrees centigrade of temperature.Taking-up is cleaned with flowing water.
Second step carries out chemical stain with the low Chromium Stainless Steel after the pre-treatment and processes, and the chemical stain liquid formula is sulfuric acid 180 grams per liters, nitrate 15 grams per liters, ammonium sulfate 40 grams per liters, phenylformic acid 1.5 grams per liters; 80 degrees centigrade of temperature, 15 minutes beginning improvement obtained bright black in 25 minutes.Taking-up is cleaned with flowing water.
The 3rd step, the low Chromium Stainless Steel after the chemical stain processing is carried out sealing treatment, confining liquid is distilled water, 70 degrees centigrade of temperature, 5 minutes time.Take out oven dry.
Embodiment 8
The first step will be hanged down Chromium Stainless Steel and be carried out pre-treatment, and pretreatment liquid is comprised of the hydrogen peroxide of 5 grams per liter sulfuric acid and 150 grams per liters, 10 minutes time, 35 degrees centigrade of temperature.Taking-up is cleaned with flowing water.
Second step carries out chemical stain with the low Chromium Stainless Steel after the pre-treatment and processes, and the chemical stain liquid formula is sulfuric acid 200 grams per liters, nitrate 20 grams per liters, ammonium sulfate 50 grams per liters, phenylformic acid 2 grams per liters; 80 degrees centigrade of temperature, 10 minutes beginning improvement obtained bright black in 20 minutes.Taking-up is cleaned with flowing water.
The 3rd step, the low Chromium Stainless Steel after the chemical stain processing is carried out sealing treatment, confining liquid is distilled water, 70 degrees centigrade of temperature, 5 minutes time.Take out oven dry.
Claims (3)
1. one kind low Chromium Stainless Steel chemistry the production method of black, and the body material of employing is the stainless steel that contains chromium 11.7%--13%, and its concrete steps are as follows: 1) will hang down Chromium Stainless Steel and carry out pre-treatment, and take out and clean with flowing water.2) the low Chromium Stainless Steel after the pre-treatment being carried out chemical stain processes, its used chemical stain solution is by sulfuric acid, nitrate, ammonium sulfate and phenylformic acid form, sulfuric acid concentration is the 50-200 grams per liter, nitrate concentration is the 5-20 grams per liter, and ammonium sulfate concentrations is the 10-50 grams per liter, and concentration of benzoic acid is the 0.1-2 grams per liter.3) the low Chromium Stainless Steel after the chemical stain processing is carried out sealing treatment, 4) the oven dry finished product.
2. low Chromium Stainless Steel chemistry according to claim 1 the production method of black, it is characterized in that described pretreatment liquid comprises that concentration is that sulfuric acid and the concentration of 1-10 grams per liter is the hydrogen peroxide of 100-200 grams per liter, treatment time is 5-10 minute, and temperature is 25-45 degree centigrade.
3. low Chromium Stainless Steel chemistry according to claim 1 and 2 the production method of black, and the treatment temp that it is characterized in that described chemical pigmenting liquid is 45-80 degree centigrade, and the time is 20-60 minute.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103028768A CN103031552A (en) | 2011-10-09 | 2011-10-09 | Production method for chemically coloring low-chromium stainless steel into black |
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| CN2011103028768A CN103031552A (en) | 2011-10-09 | 2011-10-09 | Production method for chemically coloring low-chromium stainless steel into black |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866372A (en) * | 2014-03-24 | 2014-06-18 | 无锡宝顺不锈钢有限公司 | Electrochemical coloring solution for stainless steel and coloring method |
| CN105297109A (en) * | 2015-11-23 | 2016-02-03 | 佛山市高明俊品金属制品有限公司 | Stainless steel electrochemical coloring liquid and coloring method |
| CN106567061A (en) * | 2016-08-16 | 2017-04-19 | 深圳市诚达科技股份有限公司 | Nano crystalline material based on stainless steel surface and preparation method of nano crystalline material |
| WO2018033096A1 (en) * | 2016-08-16 | 2018-02-22 | 深圳市诚达科技股份有限公司 | Surface cts anti-corrosion treatment method for stainless steel part |
| WO2018033098A1 (en) * | 2016-08-16 | 2018-02-22 | 深圳市诚达科技股份有限公司 | Anti-coking nanomaterial based on stainless steel surface, and preparation method therefor |
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| JPH0587594A (en) * | 1991-09-26 | 1993-04-06 | Yokogawa Electric Corp | Optical encoder |
| JPH0587594B2 (en) * | 1988-11-14 | 1993-12-17 | Nitsushin Seiko Kk | |
| CN101012558A (en) * | 2007-02-05 | 2007-08-08 | 汪 | Production method of solar energy optical-thermal conversion material |
| CN1330791C (en) * | 2001-12-25 | 2007-08-08 | 株式会社帕克 | Method of surface-finishing stainless steel after descaling |
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2011
- 2011-10-09 CN CN2011103028768A patent/CN103031552A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0587594B2 (en) * | 1988-11-14 | 1993-12-17 | Nitsushin Seiko Kk | |
| JPH0587594A (en) * | 1991-09-26 | 1993-04-06 | Yokogawa Electric Corp | Optical encoder |
| CN1330791C (en) * | 2001-12-25 | 2007-08-08 | 株式会社帕克 | Method of surface-finishing stainless steel after descaling |
| CN101012558A (en) * | 2007-02-05 | 2007-08-08 | 汪 | Production method of solar energy optical-thermal conversion material |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866372A (en) * | 2014-03-24 | 2014-06-18 | 无锡宝顺不锈钢有限公司 | Electrochemical coloring solution for stainless steel and coloring method |
| CN105297109A (en) * | 2015-11-23 | 2016-02-03 | 佛山市高明俊品金属制品有限公司 | Stainless steel electrochemical coloring liquid and coloring method |
| CN106567061A (en) * | 2016-08-16 | 2017-04-19 | 深圳市诚达科技股份有限公司 | Nano crystalline material based on stainless steel surface and preparation method of nano crystalline material |
| WO2018033096A1 (en) * | 2016-08-16 | 2018-02-22 | 深圳市诚达科技股份有限公司 | Surface cts anti-corrosion treatment method for stainless steel part |
| WO2018033098A1 (en) * | 2016-08-16 | 2018-02-22 | 深圳市诚达科技股份有限公司 | Anti-coking nanomaterial based on stainless steel surface, and preparation method therefor |
| WO2018033097A1 (en) * | 2016-08-16 | 2018-02-22 | 深圳市诚达科技股份有限公司 | Nanocrystalline material based on stainless steel surface, and preparation method therefor |
| CN106567061B (en) * | 2016-08-16 | 2019-09-20 | 深圳市诚达科技股份有限公司 | A kind of Nanocrystalline materials and preparation method thereof based on stainless steel surface |
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Application publication date: 20130410 |