CN1047115A - Remove the pickling agent of oxide layer on stainless steel surface - Google Patents
Remove the pickling agent of oxide layer on stainless steel surface Download PDFInfo
- Publication number
- CN1047115A CN1047115A CN 89103222 CN89103222A CN1047115A CN 1047115 A CN1047115 A CN 1047115A CN 89103222 CN89103222 CN 89103222 CN 89103222 A CN89103222 A CN 89103222A CN 1047115 A CN1047115 A CN 1047115A
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- weight
- pickling agent
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- stainless steel
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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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention provides a kind of novel pickling agent of removing oxide layer on stainless steel surface, the various stainless steel materials and the section bar surface that are specially adapted to clean through hot-roll forming generate tight zone of oxidation.The present invention forms and comprises: a kind of or two kinds of acid, chlorine-containing compound, nitrate and water in hydrochloric acid, nitric acid, the sulfuric acid.Hydrogen ion concentration is 0.5N-12N in this pickling agent, and chlorine ion concentration is 0.1% (weight)-20% (weight), and nitrate ion concentration is 0.1% (weight)-30% (weight).It is hydrofluoric acid containing not, has avoided all drawbacks of the pickling agent be made up of nitric acid and hydrofluoric acid.As cost of material height, production unit complexity, obnoxious flavour hydrogen fluoride defectives such as murder by poisoning to human body.
Description
The present invention relates to acid-washed metal material field, relate in particular to the pickling agent of removing oxide layer on stainless steel surface.
When stainless steel becomes various sheet materials and section bar from hot rolling of steel billet, the surface can be by airborne oxygen oxidation, produce zone of oxidation closely, with stainless steel materials and section bar is cold rolling or be processed into required various materials and parts with additive method before, the essential zone of oxidation of removing stainless steel surface makes stainless steel demonstrate metalluster.
At present, the zone of oxidation that the method that domestic and international most stainless steel smelting factory all uses nitric acid to add hydrofluoric acid is cleaned stainless steel surface, all before cold-rolling stainless steel sheet material, use nitric acid to add the zone of oxidation that hydrofluoric acid is removed stainless steel surface as the week Nan Chang of Japan day new company (see that " external special steel production technology " Shanghai City scientific and technical literature press publishes, nineteen eighty-two version), Shanghai No.5 Steel and Iron Plant.Adopt this technology can remove the zone of oxidation of stainless steel surface within a short period of time, but hydrofluoric acid price height is very uneconomical, hydrofluoric acid has extremely strong corrodibility to Hua Gangshi, therefore can not use colored steel stone pickling tank commonly used, must use special-purpose plastic channel.In addition, the spent acid that this technology produces also need can not be incorporated other waste liquid pool into and handle together with special-purpose plastic channel.The Jia Gegao of plastic channel, easily aging, life cycle is short, the production cost height.Plastic channel has also limited the raising of cleaning temperature, has also limited the raising of cleaning efficiency.Adopt this technology to have a large amount of hydrogen fluoride gas to overflow, make the people suffer from osteofluorosis easily, have a strong impact on the healthy of operator.Also there is minority producer to adopt the caustic soda pickling process to remove oxide layer on stainless steel surface both at home and abroad, stainless steel is immersed in the fused caustic soda (NaOH) is heated to more than 600 ℃, remove zone of oxidation in conjunction with pickling again, promptly adopt this method as Shanghai No.3 Iron ﹠. Steel Plant.But adopt this method cleaning interval longer, scavenging period is also longer, needs several hours, and the loss of alkali pot is bigger, influences production schedule.
The pickling agent that the purpose of this invention is to provide a kind of new removing oxide layer on stainless steel surface, it does not contain hydrofluoric acid, can in colored steel stone rinse bath commonly used, clean oxidizing layer of stainless steel, its cleaning speed is identical with the hydrofluoric acid clean agent with nitric acid, has avoided the various drawbacks of using hydrofluoric acid to bring, as hydrofluoric acid valency height, want special-purpose plastic channel, the production unit complexity, production cost height, toxic and harmful hydrogen fluoride make the people easily suffer from defectives such as osteofluorosis.
Pickling agent of the present invention is made up of following composition: one, select one or both acid in nitric acid, hydrochloric acid, the sulfuric acid arbitrarily, hydrogen ion concentration is 0.5N-12N in the pickling agent.Two, can produce the chlorine-containing compound of chlorion in the aqueous solution, chlorine ion concentration is a 0.1%(weight in the pickling agent)-20%(weight), chlorine ion concentration the best is a 0.5%(weight)-15%(weight).Three, can produce the nitrate of nitrate ion in the aqueous solution, nitrate ion concentration is a 0.1%(weight in the pickling agent)-30%(weight), concentration the best of nitrate ion is a 0.5%(weight)-20%(weight).Four. all the other are water.
The chlorine-containing compound that can produce chlorion in the aqueous solution during the present invention forms comprises: NaCl, KCl, NH
4Cl, MgCl
2, CaCl
2, NaClO, NaClO
2, NaClO
3, KClO
3, HClO
4, NaClO
4, LiClO
4, Mg(ClO
4)
2The nitrate that can produce nitrate ion in the aqueous solution during the present invention forms comprises: NaNO
3, KNO
3, NH
4NO
3, Mg(NO
3)
2, Zn(NO
3)
2
Adopt the present invention to clean oxide layer on stainless steel surface, if cleaning temperature is too high, overlong time easily produced the erosion phenomenon, also can add inhibiter in pickling agent, and inhibiter comprises: thiocarbamide, if fourth (a kind of thiourea derivative), thiocyanate-, urotropine, tetrahydroglyoxaline.
Concrete cleaning process of the present invention is: pickling agent is poured in the pickling tank (flower steel stone cistern or other pickling agent groove all can), be heated to 40-90 ℃, then stainless material to be cleaned (steel plate, steel pipe and other section bar, part) being put into the pickling tank dipping cleans, generally the oxide layer on stainless steel surface full scale clearance can be obtained the surface of light through 1 minute-20 minutes.The dipping scavenging period can be on demand with regulating chlorion, nitrate ion and hydrionic concentration and regulating cleaning temperature and control, and the cleaned stainless steel material takes out water and cleans, and promptly obtains the stainless material of glossy surface.
When doing basic acid with hydrochloric acid, sulfuric acid among the present invention, the stainless steel surface through cleaning has a loose black thin layer sometimes, use 3%(weight)-5%(weight) rare nitric acid soaked 1 minute or with brush scrub the albefaction processing get final product the stainless steel glossy surface.
Clean oxide layer on stainless steel surface with the present invention, scavenging period is short, and cleaning performance is good.Production pickling agent of the present invention, raw material sources are abundant, and are cheap, more a lot of than the pickle solution production cost reduction of nitric acid and hydrofluoric acid composition, and the present invention also is significantly less than the pickle solution of nitric acid and hydrofluoric acid composition to the corrosion of production unit.Pickling agent of the present invention is easy to use, save time, and do not need special-purpose plastics acidic bath, can use existing colored steel stone cistern or other pickling tanks.Save investment of production equipment, simplified production technique.Because do not have hydrofluoric acid during the present invention forms, avoided the murder by poisoning of hypertoxic hydrogen fluoride gas to the workman, improved production environment.
The invention will be further described below in conjunction with example.
Example one
65%(weight) nitric acid 20ml, sodium-chlor 10g, water 100ml are blended into pickling agent, be heated to 70 ℃, the stainless-steel pipe that zone of oxidation is arranged of last steel five factory's hot-roll formings is immersed wherein, cleaned 5 minutes, the surface oxide layer full scale clearance, obtain the stainless-steel pipe of glossy surface, put into cold rinse bank again and clean, cleaning finishes.
Example two
65%(weight) nitric acid 20ml, 31% hydrochloric acid 10ml and water 10ml are blended into pickling agent, be heated to 50 ℃, the stainless-steel pipe that zone of oxidation is arranged of last steel five factory's hot-roll formings is immersed wherein, only 1 minute, zone of oxidation is removed fully, obtains the stainless-steel pipe of glossy surface, and this method cleaning speed has surpassed the mixing clean-out system that uses hydrofluoric acid and nitric acid, put into cold rinse bank again and clean, cleaning finishes.
Example three
98% sulfuric acid 20ml, SODIUMNITRATE 10g, sodium-chlor 20g and water 100ml are blended into pickling agent, are heated to 75 ℃, have the stainless steel materials of zone of oxidation to immerse wherein on the surface of Shanghai No.3 Iron ﹠. Steel Plant production, and through 5 minutes, zone of oxidation is full scale clearance.
Example four
98% sulfuric acid 20ml, SODIUMNITRATE 10g, sodium-chlor 20g and water 600ml are blended into pickling agent, are heated to 80 ℃, have the stainless steel materials of zone of oxidation to immerse wherein on the surface of Shanghai No.3 Iron ﹠. Steel Plant production, clean the zone of oxidation full scale clearance through 20 minutes.This example illustrates that the concentration of lotion in the above-mentioned example three descends five times, still can reach the cleaning purpose.
Example five
31% hydrochloric acid 10ml, SODIUMNITRATE 10g and 100ml are blended into pickling agent, are heated to 75 ℃, and the stainless steel materials input that there is a zone of oxidation on the surface of Shanghai No.3 Iron ﹠. Steel Plant production was wherein cleaned the zone of oxidation full scale clearance through 7 minutes.
Pickling agent in the example three, four, five is acid substantially with sulfuric acid, hydrochloric acid, and the stainless steel surface through cleaning still has a loose black thin layer, must be in 3%(weight)-5%(weight) rare nitric acid in do albefaction and handle, can obtain the stainless steel glossy surface.
Claims (5)
1, a kind of pickling agent of removing oxide layer on stainless steel surface is characterized in that being made up of following composition:
A. select one or both acid in nitric acid, hydrochloric acid, the sulfuric acid arbitrarily, hydrogen ion concentration is 0.5N-12N in the pickling agent,
B. can produce the chlorine-containing compound of chlorion in the aqueous solution, chlorine ion concentration is 0.1% (weight)-20% (weight) in the pickling agent,
C. can produce the nitrate of nitrate ion in the aqueous solution, nitrate ion concentration is 0.1% (weight)-30% (weight) in the pickling agent,
D. all the other are water.
2, pickling agent as claimed in claim 1 is characterized in that: the chlorine ion concentration in the pickling agent is best to be 0.5%(weight)-15%(weight), nitrate ion concentration the best is a 0.5%(weight)-20%(weight).
3, pickling agent as claimed in claim 1 or 2 is characterized in that the chlorine-containing compound that can produce chlorion in the aqueous solution comprises: NaCl, KCl, NH
4Cl, MgCl
2, CaCl
2, NaClO, NaClO
2, NaClO
3, HClO
4, NaClO
4, LiClO
4, Mg(ClO
4)
2
4, pickling agent as claimed in claim 1 or 2 is characterized in that the nitrate that can produce nitrate ion in the aqueous solution comprises: NaNO
3, KNO
3, NH
4NO
3, Mg(NO
3)
2, Zn(NO
3)
2
5, pickling agent as claimed in claim 1 or 2 is characterized in that also can adding inhibiter in the pickling agent, and inhibiter comprises: thiocarbamide, if fourth (a kind of thiourea derivative), thiocyanate-, urotropine, tetrahydroglyoxaline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89103222 CN1047115A (en) | 1989-05-11 | 1989-05-11 | Remove the pickling agent of oxide layer on stainless steel surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89103222 CN1047115A (en) | 1989-05-11 | 1989-05-11 | Remove the pickling agent of oxide layer on stainless steel surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1047115A true CN1047115A (en) | 1990-11-21 |
Family
ID=4855031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89103222 Pending CN1047115A (en) | 1989-05-11 | 1989-05-11 | Remove the pickling agent of oxide layer on stainless steel surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1047115A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075566C (en) * | 1998-03-13 | 2001-11-28 | 董景金 | Treating method for oxide layer on aluminium far-infrared reflector |
| CN1081246C (en) * | 1999-07-29 | 2002-03-20 | 上海交通大学 | Multiple elements chemical etching agent for nickel-titanium alloy film |
| CN100339510C (en) * | 2005-05-26 | 2007-09-26 | 中国第二重型机械集团公司 | Detergent for stainless steel and preparation method |
| CN100432296C (en) * | 2003-08-15 | 2008-11-12 | 东南大学 | Solution for removing oxide layer on surface of annealed stainless steel |
| CN101738340B (en) * | 2008-11-06 | 2011-09-07 | 北京有色金属研究总院 | Method for preparing sample showing metallurgical structure of tantalum-tungsten alloy |
| CN102277599A (en) * | 2011-06-03 | 2011-12-14 | 浙江省医疗器械研究所 | Process for surface treatment of metal components of vacuum thermal insulation interlayers of cryotherapy probe |
| CN103993298A (en) * | 2014-04-29 | 2014-08-20 | 浏阳市三鹰新材料有限责任公司 | Surface repair nano composite plating and process used for reproducing |
| CN104046987A (en) * | 2013-03-13 | 2014-09-17 | 珠海罗西尼表业有限公司 | Corrosion liquid for corrosion of fractured drill bit in watchcase, preparation method of corrosion liquid and method for taking out fractured drill bit in watchcase |
| CN104513998A (en) * | 2013-09-26 | 2015-04-15 | 中国石油化工股份有限公司 | Corrosion inhibitor composition, applications thereof, and method using same to perform acid-washing on equipment |
| CN107254683A (en) * | 2017-07-03 | 2017-10-17 | 无锡市福吉电子科技有限公司 | The strength rust remover and its application method of a kind of steelwork |
| CN107761111A (en) * | 2017-10-24 | 2018-03-06 | 威海翔泽新材料科技有限公司 | A kind of boiler acid pickling agent and preparation method thereof |
| CN110029352A (en) * | 2018-03-08 | 2019-07-19 | 叶涛 | A kind of environmentally friendly mordant and its application method of metallic article |
-
1989
- 1989-05-11 CN CN 89103222 patent/CN1047115A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075566C (en) * | 1998-03-13 | 2001-11-28 | 董景金 | Treating method for oxide layer on aluminium far-infrared reflector |
| CN1081246C (en) * | 1999-07-29 | 2002-03-20 | 上海交通大学 | Multiple elements chemical etching agent for nickel-titanium alloy film |
| CN100432296C (en) * | 2003-08-15 | 2008-11-12 | 东南大学 | Solution for removing oxide layer on surface of annealed stainless steel |
| CN100339510C (en) * | 2005-05-26 | 2007-09-26 | 中国第二重型机械集团公司 | Detergent for stainless steel and preparation method |
| CN101738340B (en) * | 2008-11-06 | 2011-09-07 | 北京有色金属研究总院 | Method for preparing sample showing metallurgical structure of tantalum-tungsten alloy |
| CN102277599A (en) * | 2011-06-03 | 2011-12-14 | 浙江省医疗器械研究所 | Process for surface treatment of metal components of vacuum thermal insulation interlayers of cryotherapy probe |
| CN102277599B (en) * | 2011-06-03 | 2014-01-01 | 浙江省医疗器械研究所 | Process for surface treatment of metal components of vacuum thermal insulation interlayers of cryotherapy probe |
| CN104046987A (en) * | 2013-03-13 | 2014-09-17 | 珠海罗西尼表业有限公司 | Corrosion liquid for corrosion of fractured drill bit in watchcase, preparation method of corrosion liquid and method for taking out fractured drill bit in watchcase |
| CN104513998A (en) * | 2013-09-26 | 2015-04-15 | 中国石油化工股份有限公司 | Corrosion inhibitor composition, applications thereof, and method using same to perform acid-washing on equipment |
| CN104513998B (en) * | 2013-09-26 | 2018-02-13 | 中国石油化工股份有限公司 | Corrosion inhibiter is with composition and its application and method that pickling is carried out to equipment |
| CN103993298A (en) * | 2014-04-29 | 2014-08-20 | 浏阳市三鹰新材料有限责任公司 | Surface repair nano composite plating and process used for reproducing |
| CN103993298B (en) * | 2014-04-29 | 2016-05-04 | 浏阳市三鹰新材料有限责任公司 | Nano composite plating layer process is repaired on a kind of surface of manufacturing again that is applied to |
| CN107254683A (en) * | 2017-07-03 | 2017-10-17 | 无锡市福吉电子科技有限公司 | The strength rust remover and its application method of a kind of steelwork |
| CN107254683B (en) * | 2017-07-03 | 2019-08-27 | 无锡市恒利弘实业有限公司 | A kind of the strength rust remover and its application method of steelwork |
| CN107761111A (en) * | 2017-10-24 | 2018-03-06 | 威海翔泽新材料科技有限公司 | A kind of boiler acid pickling agent and preparation method thereof |
| CN110029352A (en) * | 2018-03-08 | 2019-07-19 | 叶涛 | A kind of environmentally friendly mordant and its application method of metallic article |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |