CN1085606A - Rapid ordinary-temp blacking agent for steel ﹠ iron - Google Patents
Rapid ordinary-temp blacking agent for steel ﹠ iron Download PDFInfo
- Publication number
- CN1085606A CN1085606A CN 93119784 CN93119784A CN1085606A CN 1085606 A CN1085606 A CN 1085606A CN 93119784 CN93119784 CN 93119784 CN 93119784 A CN93119784 A CN 93119784A CN 1085606 A CN1085606 A CN 1085606A
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- blackening
- steel
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- agent
- salt
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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
- C23C22/07—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 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/12—Orthophosphates containing zinc cations
- C23C22/13—Orthophosphates containing zinc cations containing also nitrate or nitrite anions
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Steel surface normal temperature quick black of the present invention agent, its mixed solution by mantoquita, selenium salt, phosphoric acid salt, nitrate, Citrate trianion, carboxamide and hexamethylenetetramine is formed.That blackening agent for surface of the present invention has is solution-stabilized, the blackout time is short, film forming properties good; Blackening processing technology of the present invention has the advantage of simple to operate, no obnoxious flavour generation, saving energy at normal temperature.
Description
The present invention relates to chemical treatment method field, metallic surface, specifically relate to the Technology that steel surface carries out the chemical oxidation blackout.
Be widely used in five metals at steel surface by the technology that blackening agent for surface forms oxide film from the teeth outwards, machinery, boats and ships, instrument, in the aerospace industry, surperficial pre-treatment that the art breading of traditional steel part surface blackening is used and blackening step all are at high temperature to carry out, especially blackening adopts the nitrite heating systems, in 135-142 ℃ of high alkali liquid, boil the blackout process of finishing in 30-60 minute, thereby energy consumption height, production cycle is long, because the volatilization of concentrated base causes the alkali mist to fill the air under the high temperature, the severe contamination Working environment, totally unfavorable to operator's health.And the toxicity of nitrous acid can cause environmental pollution, should avoid adopting as far as possible.In recent years, the domestic exploitation that begins to carry out room temperature blackening technology is in the hope of addressing the above problem, but the superficial film poor adhesive force that blackening agent for surface of being developed and blackening make after use, solidity to corrosion is low, blackening agent for surface solution instability, thereby they can not have practical industrial application value.
The inventor studies at the problem of above-mentioned existence, makes a kind of blackening agent for surface of steel surface, and this blackening agent for surface can use at normal temperatures, film formation time only needs 3-10 minute, and blackening agent for surface is solution-stabilized, and precipitation is few.Adopt the blackening of blackening agent for surface of the present invention to have at normal temperatures and carry out, simple to operate, and also the film performance that makes of technology is good thus, has good solidity to corrosion.
Thereby purpose of the present invention just provides the steel surface blackening agent for surface that uses under a kind of normal temperature; On the other hand, the present invention also provides a kind of processing method that adopts the steel surface blackout of blackening agent for surface of the present invention.
Blackening agent for surface of the present invention is by the copper of (A) 4～8g/l (II) salt; (B) the selenium salt of 4～8g/l; (C) phosphoric acid salt of 7～15g/l; (D) zinc nitrate of 2～4g/l or saltpetre; (E) Citrate trianion of 2～4g/l and (F) mixed solution of 5～15ml/l carboxamide and hexamethylenetetramine form.Wherein said (A) copper (II) salt is the vitriol of copper, and soluble salts such as nitrate are as copper sulfate; Described (B) selenate can be selected from selenite and tin anhydride; Described (C) phosphoric acid salt can be orthophosphoric acid salt and dihydrogen phosphate; The carboxamide in described (C) carboxamide and the hexamethylenetetramine mixed solution and the molar ratio of hexamethylenetetramine are 1: 1～10.
To the preparation method of above-mentioned blackening agent for surface is weighing each component reagent according to the above ratio, through dissolve respectively, mix and stir after just can make blackening agent for surface of the present invention.
Blackening of the present invention is such, will immerse in the blackening agent for surface solution of the invention described above 3～10 minutes through the steel part of clean surface after the pre-treatment, can finish blackening.The blackening operational condition is that the PH of solution is 2.0～3.0, total acidity 12～16 points, free acidity 4～6 points.
With embodiment blackening agent for surface of the present invention and blackening of the present invention are described below.
Embodiment:
(1) prepare blackening agent for surface of the present invention in following ratio:
Copper sulfate 7g/l
Sodium Selenite 8g/l
Primary zinc phosphate 12g/l
Saltpetre 3g/l
Trisodium Citrate 4g/l
(carboxamide and hexamethylenetetramine mixed solution) 10mL/l
Molecular ratio is 1: 1
(2) carry out steel part surface blackening treating processes:
To immerse down in the blackening agent for surface that above-mentioned prescription makes at normal temperature (25 ℃) through the steel part of oil removing, pickling and rinsing pre-treatment, in PH=2.0～2.5, total acidity 12～16 points is soaked under the condition of free acidity 4～6 and was got final product in 3～5 minutes.Through observing, solution-stabilized, precipitation is few.
(3) to the performance test of rete
1, uses 3% cupric sulphate dropping test.Under 15～20 ℃ of conditions, the experiment of copper sulfate drop is carried out on above-mentioned blackout steel part surface, variable color, copper stain, rust spot in 1 minute, are not occurred.This shows that its result has surpassed 32 seconds of dynamo-electric ministerial standard WJ533～82 regulations.
2,3% sodium chloride solution test under 15～20 ℃ of conditions, is soaked above-mentioned blackout part 3 hours contactless copper stain point and rust spot.
By above explanation as seen, copper iron normal temperature quick black of the present invention agent, have the blackout time short, film forming properties good, solution-stabilized, precipitation is few; Blackening of the present invention has no obnoxious flavour and produces, normal-temperature operation, and simple fast, this technology can replace traditional high-temperature alkaline blackening fully.
Claims (6)
1, a kind of steel surface blackout treatment agent, it is by copper (II) salt of (A) 4～8g/l; (B) the selenium salt of 4～8g/l; (C) phosphoric acid salt of 7～15g/l; (D) zinc nitrate of 2～4g/l or saltpetre; (E) Citrate trianion of 2～4g/l; (F) mixed solution of the carboxamide of 5～15ml/l and hexamethylenetetramine is formed.
2, treatment agent according to claim 1, wherein said (A) mantoquita is vitriol, the nitrate of copper;
3, treatment agent according to claim 1, wherein said (B) selenium salt is selenite or tin anhydride;
4, treatment agent according to claim 1, wherein said (C) phosphoric acid salt is orthophosphoric acid salt and dihydrogen phosphate;
5, treatment agent according to claim 1, wherein said (F) mixed solution are that the molecular ratio in carboxamide and hexamethylenetetramine is that 1: 1～10 ratio is mixed.
6, a kind of method of blackening of steel surface, it is characterized in that to immerse at normal temperatures through the steel part of surface preparation in the described blackening agent for surface solution of claim (1) 3～10 minutes, PH=2.0 in the regulator solution～2.5, total acidity 12～16 points, free acidity 4～6 points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93119784 CN1027703C (en) | 1993-11-10 | 1993-11-10 | Rapid ordinary-temp blacking agent for steel & iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93119784 CN1027703C (en) | 1993-11-10 | 1993-11-10 | Rapid ordinary-temp blacking agent for steel & iron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1085606A true CN1085606A (en) | 1994-04-20 |
| CN1027703C CN1027703C (en) | 1995-02-22 |
Family
ID=4993082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93119784 Expired - Fee Related CN1027703C (en) | 1993-11-10 | 1993-11-10 | Rapid ordinary-temp blacking agent for steel & iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1027703C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049253C (en) * | 1995-07-04 | 2000-02-09 | 吕进东 | Nontoxic blackening liquid for iron and steel surface at normal temp. |
| CN102021548A (en) * | 2010-12-18 | 2011-04-20 | 江苏德美科技有限公司 | Blackening agent used for steel and iron surface at room temperature and preparation method for blackening agent at room temperature |
| CN103194742A (en) * | 2013-04-28 | 2013-07-10 | 马鞍山金泉工业介质科技有限公司 | Inorganic-resin black coating agent applied to metal surface treatment, as well as preparation method and application of black coating agent |
| CN104328427A (en) * | 2014-11-05 | 2015-02-04 | 衡阳市金化科技有限公司 | Steel and iron blackening agent |
| CN106811742A (en) * | 2017-01-23 | 2017-06-09 | 江苏理工学院 | It is a kind of for the room temperature blackening liquid of steel and its application |
| CN108707890A (en) * | 2018-06-05 | 2018-10-26 | 阜南县奋进机械制造有限公司 | A kind of trepan steel accessory surface blackening process method |
| CN109606001A (en) * | 2018-12-28 | 2019-04-12 | 云南乌铜走银文化产业有限公司 | Old dose and its application method are done for what black copper walked silver-colored manufacturing process |
| CN110042378A (en) * | 2019-03-27 | 2019-07-23 | 祝亚琴 | Stainless steel blackening agent for surface |
| CN112363359A (en) * | 2020-11-10 | 2021-02-12 | 昆山丘钛微电子科技有限公司 | Light shielding sheet and extinction processing method thereof |
-
1993
- 1993-11-10 CN CN 93119784 patent/CN1027703C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049253C (en) * | 1995-07-04 | 2000-02-09 | 吕进东 | Nontoxic blackening liquid for iron and steel surface at normal temp. |
| CN102021548A (en) * | 2010-12-18 | 2011-04-20 | 江苏德美科技有限公司 | Blackening agent used for steel and iron surface at room temperature and preparation method for blackening agent at room temperature |
| CN103194742A (en) * | 2013-04-28 | 2013-07-10 | 马鞍山金泉工业介质科技有限公司 | Inorganic-resin black coating agent applied to metal surface treatment, as well as preparation method and application of black coating agent |
| CN104328427A (en) * | 2014-11-05 | 2015-02-04 | 衡阳市金化科技有限公司 | Steel and iron blackening agent |
| CN106811742A (en) * | 2017-01-23 | 2017-06-09 | 江苏理工学院 | It is a kind of for the room temperature blackening liquid of steel and its application |
| CN108707890A (en) * | 2018-06-05 | 2018-10-26 | 阜南县奋进机械制造有限公司 | A kind of trepan steel accessory surface blackening process method |
| CN109606001A (en) * | 2018-12-28 | 2019-04-12 | 云南乌铜走银文化产业有限公司 | Old dose and its application method are done for what black copper walked silver-colored manufacturing process |
| CN110042378A (en) * | 2019-03-27 | 2019-07-23 | 祝亚琴 | Stainless steel blackening agent for surface |
| CN112363359A (en) * | 2020-11-10 | 2021-02-12 | 昆山丘钛微电子科技有限公司 | Light shielding sheet and extinction processing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1027703C (en) | 1995-02-22 |
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