CN103305856A - Cleaning agent for rust-proof cold-rolled steel sheets before annealing - Google Patents
Cleaning agent for rust-proof cold-rolled steel sheets before annealing Download PDFInfo
- Publication number
- CN103305856A CN103305856A CN2013102418845A CN201310241884A CN103305856A CN 103305856 A CN103305856 A CN 103305856A CN 2013102418845 A CN2013102418845 A CN 2013102418845A CN 201310241884 A CN201310241884 A CN 201310241884A CN 103305856 A CN103305856 A CN 103305856A
- Authority
- CN
- China
- Prior art keywords
- rolled steel
- cold
- cleaning
- annealing
- cleaning agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a cleaning agent for rust-proof cold-rolled steel sheets before annealing. The cleaning agent comprises the following components by weight percent: 30-40% of sodium hydroxide, 20-30% of sodium carbonate, 10-20% of trisodium phosphate, 10-20% of sodium benzoate, 2-7% of ethylene diamine tetraacetic acid and 3-8% of n-tetradecyl polyoxyethylene ether. When the cleaning agent is used, the cleaning agent is added to water according to a weight percent of 3-5% to prepare cleaning solution and the cold-rolled steel sheets before annealing are cleaned in the cleaning solution at 70-85 DEG C. The cleaning agent has the beneficial effects that the cleaning agent does not have strong pungent smell, can be directly added to cleaning section water before recrystallization annealing of the cold-rolled steel sheets, is convenient and easy to use, has good cleaning effects, has high cleaning efficiency being above 99%, has excellent rust-proof property, is suitable for cleaning the cold-rolled steel sheets, alloying galvanized sheets, hot galvanized sheets and the like and enables the rust-proof period of the steel sheets in the middle process to be over 15 days.
Description
Technical field
The front Cold-strip Steel Surface clean-out system that the present invention relates to anneal refers to antirust cold-rolled steel sheet clean-out system before a kind of annealing particularly.
Background technology
Cleaning is the important step before the recrystallization annealing.Must be through surface cleaning processing technique before the recrystallization annealing, with oil particles and other surface residue of removing the metallic surface, the front metallic surface of recrystallization annealing is unclean, bring pollutent into annealing process, with the surface quality of steel, therefore how improving cleansing power, reduce production costs is the problem of generally being concerned about before the annealing after the impact annealing.
Oil removing cleaning process before the cold rolled strip recrystallization annealing is with the very important procedure of steel production process, and this operation has determined after the annealing condition of surface with steel to a great extent, and clean-out system is the key that guarantees this process quality.Present main cleaning way is the high temperature alkali cleaning before the annealing.In recent years, along with the research and development of cold rolled strip steel grade are accelerated, steel grade newly developed is more, has comprised cold-rolled steel sheet, alloying galvanizing plate and heat zinc coating plate etc.The solidity to corrosion difference of steel grade and band steel middle database storage time before cleaning after annealing differ, and cause steel plate corrosion easily to occur, have affected quality product.
Summary of the invention
The object of the invention is to overcome the defective that easily occurs corrosion before cold rolled strip is annealed, provide the annealing that a kind of raw material is easy to get, price is low, effective front antirust cold-rolled steel sheet clean-out system.
For achieving the above object, the front antirust cold-rolled steel sheet clean-out system of annealing that the present invention is designed, its weight percent consists of: sodium hydroxide 30 ~ 40%, yellow soda ash 20 ~ 30%, tertiary sodium phosphate 10 ~ 20%, Sodium Benzoate 10 ~ 20%, disodium ethylene diamine tetraacetate 2 ~ 7%, n-tetradecane base Soxylat A 25-7 3 ~ 8%.
Preferably, the weight percent of antirust cold-rolled steel sheet clean-out system consists of before the above-mentioned annealing: sodium hydroxide 37 ~ 38%, yellow soda ash 23 ~ 25%, tertiary sodium phosphate 11 ~ 13%, Sodium Benzoate 17 ~ 18%, disodium ethylene diamine tetraacetate 4 ~ 6%, n-tetradecane base Soxylat A 25-7 4%.
The present invention also provides the application method of the front antirust cold-rolled steel sheet clean-out system of a kind of above-mentioned annealing, the method is: antirust cold-rolled steel sheet clean-out system before the described annealing is added into according to per 3 ~ 5% weight percent makes cleaning solution in the water, clean the cold-rolled steel sheet before the annealing in 70 ~ 85 ℃ cleaning solution.
Anneal each compositional selecting and the principle of qualification of front antirust cold-rolled steel sheet clean-out system of the present invention is as follows:
The greasy dirt of cold rolled strip is generally three kinds of oils: vegetables oil, animal oil and mineral oil.Can be divided into saponifiable oil and non-saponified oil by its chemical property, all animal and vegetable oil all belong to saponifiable oil, and these oil generate soap with the alkali effect, and mineral oil all is non-saponified oil, is got rid of by surfactant washing.Alkali cleans the mechanism of greasy dirt, it is generally acknowledged alkali and the vegetable and animals oils react with in the greasy dirt in the detergent solution, and generation is easy to become solution in soap and the glycerine of water, thus wipe oil, and this chemical process claims again saponification reaction.
When sodium hydrate content reaches 50%, the cleaning of greasy dirt there is good result.For maintaining certain basicity, adopt yellow soda ash to replace a part of sodium hydroxide, make sodium hydroxide and carbonate content summation more than 50%, be more or less the same greater than 50% sodium hydroxide cleaning performance with content, and price is relatively cheap.
Determining of phosphate content: phosphoric acid salt has the effect of buffer pH value, and phosphate concn is larger, and surge capability is larger.Always surpass 50% at sodium hydroxide and carbonate content, when phosphate content reaches 20%, increase phosphate concn again, the pH value changes little.
Sodium Benzoate is water soluble anti-rust agent, can stop the corrosion of steel after cleaning.N-tetradecane base Soxylat A 25-7 can significantly reduce the surface tension of smooth liquid, makes scavenging solution wetting and spread over belt steel surface.Sodium Benzoate and n-tetradecane base Soxylat A 25-7 form rust inhibitor, when cleaning to satisfy to the metallic surface without the burn into not damaged, make the metallic surface clean, bright after the cleaning, and the antirust requirement of certain inhibition arranged.
The water insoluble meeting of soap of the metal ions such as Fe, Ca, Mg is deposited in the cleaning equipment, also can again adhere to steel plate and causes cleaning efficiency to descend.Add in the alkali cleaning agent disodium ethylene diamine tetraacetate sequestrant can with scavenging solution in the metal ions such as Fe, Ca, Mg form coordination compound, the lipid acid that reduces the formation of these metal ions and fat saponification is combined into the possibility of metallic soap.
Beneficial effect of the present invention:
1, the present invention anneals front antirust cold-rolled steel sheet clean-out system without the intense stimulus smell.
2, the present invention's front antirust cold-rolled steel sheet clean-out system of annealing can directly be added on before the cold rolled strip recrystallization annealing in the cleaning section water, and convenient easy-to-use, cleaning performance is good, and cleaning efficiency is more than 99%.
3, the present invention's front antirust cold-rolled steel sheet clean-out system of annealing has good rust-preventing characteristic, is applicable to the cleaning of the steel grades such as cold-rolled steel sheet, alloying galvanizing plate and heat zinc coating plate, and steel plate is reached more than 15 days at middle operation rust-proof life.
4, the present invention's front antirust cold-rolled steel sheet clean-out system of annealing has better buffer pH value, in certain cleaning temperature and concentration range, still has good cleaning performance.
Embodiment
The present invention is described in further detail below in conjunction with specific embodiment.
Embodiment 1
Get by weight percentage sodium hydroxide 30%, yellow soda ash 30%, tertiary sodium phosphate 20%, Sodium Benzoate 10%, disodium ethylene diamine tetraacetate 2%, n-tetradecane base Soxylat A 25-7 8% makes the front antirust cold-rolled steel sheet clean-out system 1 of annealing with even mixing of above-mentioned raw materials.
Antirust cold-rolled steel sheet clean-out system 1 directly is added in the front cleaning section water of cold rolled strip recrystallization annealing before will annealing, making its weight percent concentration is 3%, be to clean belt steel surface to be annealed under 85 ℃ the condition at pickling temperature, after testing, cleaning efficiency reaches 99.3%, and steel plate reaches 16 days at middle operation rust-proof life.
Embodiment 2
Get by weight percentage sodium hydroxide 40%, yellow soda ash 20%, tertiary sodium phosphate 10%, Sodium Benzoate 20%, disodium ethylene diamine tetraacetate 7%, n-tetradecane base Soxylat A 25-7 3% makes the front antirust cold-rolled steel sheet clean-out system 2 of annealing with even mixing of above-mentioned raw materials.
Antirust cold-rolled steel sheet clean-out system 2 directly is added in the front cleaning section water of cold rolled strip recrystallization annealing before will annealing, making its weight percent concentration is 5%, be to clean belt steel surface to be annealed under 70 ℃ the condition at pickling temperature, after testing, cleaning efficiency reaches 99.1%, and steel plate reaches 17 days at middle operation rust-proof life.
Embodiment 3
Get by weight percentage sodium hydroxide 35%, yellow soda ash 25%, tertiary sodium phosphate 15%, Sodium Benzoate 15%, disodium ethylene diamine tetraacetate 4%, n-tetradecane base Soxylat A 25-7 6% makes the front antirust cold-rolled steel sheet clean-out system 3 of annealing with even mixing of above-mentioned raw materials.
Antirust cold-rolled steel sheet clean-out system 3 directly is added in the front cleaning section water of cold rolled strip recrystallization annealing before will annealing, making its weight percent concentration is 4%, be to clean belt steel surface to be annealed under 75 ℃ the condition at pickling temperature, after testing, cleaning efficiency reaches 99.2%, and steel plate reaches 15 days at middle operation rust-proof life.
Embodiment 4
Get by weight percentage sodium hydroxide 33%, yellow soda ash 27%, tertiary sodium phosphate 18%, Sodium Benzoate 12%, disodium ethylene diamine tetraacetate 5%, n-tetradecane base Soxylat A 25-7 5% makes the front antirust cold-rolled steel sheet clean-out system 4 of annealing with even mixing of above-mentioned raw materials.
Antirust cold-rolled steel sheet clean-out system 4 directly is added in the front cleaning section water of cold rolled strip recrystallization annealing before will annealing, making its weight percent concentration is 4%, be to clean belt steel surface to be annealed under 80 ℃ the condition at pickling temperature, after testing, cleaning efficiency reaches 99.2%, and steel plate reaches 16 days at middle operation rust-proof life.
Embodiment 5
Get by weight percentage sodium hydroxide 37%, yellow soda ash 23%, tertiary sodium phosphate 13%, Sodium Benzoate 17%, disodium ethylene diamine tetraacetate 6%, n-tetradecane base Soxylat A 25-7 4% makes the front antirust cold-rolled steel sheet clean-out system 3 of annealing with even mixing of above-mentioned raw materials.
Antirust cold-rolled steel sheet clean-out system 3 directly is added in the front cleaning section water of cold rolled strip recrystallization annealing before will annealing, making its weight percent concentration is 3%, be to clean belt steel surface to be annealed under 75 ℃ the condition at pickling temperature, after testing, cleaning efficiency reaches 99.1%, and steel plate reaches 18 days at middle operation rust-proof life.
Embodiment 6
Get by weight percentage sodium hydroxide 38%, yellow soda ash 25%, tertiary sodium phosphate 11%, Sodium Benzoate 18%, disodium ethylene diamine tetraacetate 4%, n-tetradecane base Soxylat A 25-7 4% makes the front antirust cold-rolled steel sheet clean-out system 3 of annealing with even mixing of above-mentioned raw materials.
Antirust cold-rolled steel sheet clean-out system 3 directly is added in the front cleaning section water of cold rolled strip recrystallization annealing before will annealing, making its weight percent concentration is 3%, be to clean belt steel surface to be annealed under 75 ℃ the condition at pickling temperature, after testing, cleaning efficiency reaches 99.2%, and steel plate reaches 18 days at middle operation rust-proof life.
Claims (3)
1. antirust cold-rolled steel sheet clean-out system before the annealing, its weight percent consists of: sodium hydroxide 30 ~ 40%, yellow soda ash 20 ~ 30%, tertiary sodium phosphate 10 ~ 20%, Sodium Benzoate 10 ~ 20%, disodium ethylene diamine tetraacetate 2 ~ 7%, n-tetradecane base Soxylat A 25-7 3 ~ 8%.
2. antirust cold-rolled steel sheet clean-out system before the annealing according to claim 1, it is characterized in that: the weight percent of described sanitising agent consists of: sodium hydroxide 37 ~ 38%, yellow soda ash 23 ~ 25%, tertiary sodium phosphate 11 ~ 13%, Sodium Benzoate 17 ~ 18%, disodium ethylene diamine tetraacetate 4 ~ 6%, n-tetradecane base Soxylat A 25-7 4%.
3. the application method of antirust cold-rolled steel sheet clean-out system before the described annealing of claim 1, it is characterized in that: the method is: antirust cold-rolled steel sheet clean-out system before the described annealing is added into according to per 3 ~ 5% weight percent makes cleaning solution in the water, clean the cold-rolled steel sheet before the annealing in 70 ~ 85 ℃ cleaning solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310241884.5A CN103305856B (en) | 2013-06-19 | 2013-06-19 | Antirust cold-rolled steel sheet clean-out system before annealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310241884.5A CN103305856B (en) | 2013-06-19 | 2013-06-19 | Antirust cold-rolled steel sheet clean-out system before annealing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103305856A true CN103305856A (en) | 2013-09-18 |
| CN103305856B CN103305856B (en) | 2015-12-02 |
Family
ID=49131565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310241884.5A Expired - Fee Related CN103305856B (en) | 2013-06-19 | 2013-06-19 | Antirust cold-rolled steel sheet clean-out system before annealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103305856B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032321A (en) * | 2014-06-17 | 2014-09-10 | 顾兴 | Metal cleaning liquid |
| CN107488861A (en) * | 2017-09-08 | 2017-12-19 | 武汉钢铁有限公司 | A kind of electrogalvanizing pre-treatment alkali electroless cleaning agent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098748A (en) * | 1993-08-12 | 1995-02-15 | 武汉钢铁(集团)公司 | Cleaning agent for cold-rolled silicon steel plate |
| CN101608314A (en) * | 2008-06-16 | 2009-12-23 | 南京科润工业介质有限公司 | Anti-emulsification water-soluble metal washing agent |
| CN102220592A (en) * | 2011-05-16 | 2011-10-19 | 武汉钢铁(集团)公司 | Foamless floating-oil-type alkaline cleaning agent used for pre-treatment of pre-coated steel plate |
-
2013
- 2013-06-19 CN CN201310241884.5A patent/CN103305856B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098748A (en) * | 1993-08-12 | 1995-02-15 | 武汉钢铁(集团)公司 | Cleaning agent for cold-rolled silicon steel plate |
| CN101608314A (en) * | 2008-06-16 | 2009-12-23 | 南京科润工业介质有限公司 | Anti-emulsification water-soluble metal washing agent |
| CN102220592A (en) * | 2011-05-16 | 2011-10-19 | 武汉钢铁(集团)公司 | Foamless floating-oil-type alkaline cleaning agent used for pre-treatment of pre-coated steel plate |
Non-Patent Citations (4)
| Title |
|---|
| 周华龙: "《皮革化工材料学》", 31 July 2010, 科学出版社 * |
| 王毓民: "《金属加工过程中的清洗与防锈》", 31 January 2009, 化学工业出版社 * |
| 谢守泉: "脱脂清洗技术在高附加值带钢生产中的应用", 《表面技术》 * |
| 郎丰军 等: "低成本镀锌前清洗剂的研制", 《武钢技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032321A (en) * | 2014-06-17 | 2014-09-10 | 顾兴 | Metal cleaning liquid |
| CN107488861A (en) * | 2017-09-08 | 2017-12-19 | 武汉钢铁有限公司 | A kind of electrogalvanizing pre-treatment alkali electroless cleaning agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103305856B (en) | 2015-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2012343514B2 (en) | Composition for dissolving and/or inhibiting deposition of scale on a surface of a system | |
| CN102268681B (en) | Degreasing agent for production of coated steel plate and preparation method thereof | |
| CN102925908B (en) | Water-based normal-temperature rustproof spray cleaning agent and preparation method thereof | |
| CN104862729A (en) | Metal surface polishing cleaning agent | |
| CN103305856B (en) | Antirust cold-rolled steel sheet clean-out system before annealing | |
| CN106319544A (en) | Environment-friendly rust remover | |
| CN101519619A (en) | Antirust agent for building standard raw materials and standard parts and using method thereof | |
| CN103290421B (en) | Zinc-plated pre-treatment cleaning steel plate agent after annealing | |
| CN1218069C (en) | Phytic acid cleaning agent | |
| KR101798804B1 (en) | Non-phosphorus chemical conversion treatment agent and treatment liquid for plastic working, chemical conversion coating, and metal material having chemical conversion coating | |
| CN101448974B (en) | Method for the carboxylation treatment of metal surfaces, use of said method in order to provide temporary protection against corrosion and method for producing shaped sheet metal thus carboxylated | |
| CN105908201A (en) | Iron and steel surface cleaning agent | |
| CN104451736A (en) | Long-acting antirust cleaning agent and application method thereof | |
| CN103255422B (en) | Wet flattening agent with high rust resistance | |
| CN103708637A (en) | Amino trimethylene phosphonic acid-N-oxide and preparation method thereof | |
| CN103276401B (en) | Anti-annealing bonding cold rolled strip clean-out system | |
| CN102534636B (en) | Phosphate-free degreasing fluid composition for cold-rolled sheets before galvanizing, and preparation method for composition | |
| CN112375613A (en) | Preparation method of environment-friendly water-based temporary antirust agent used after pickling of ESP strip steel | |
| CN104451720A (en) | Surface cleaning agent for sensor zinc-plating shell | |
| CN109852975A (en) | A kind of galvanizing equipment restrainer | |
| CN110541134A (en) | acid rain resistant electric power iron tower structural member hot dip galvanizing production method | |
| CN104450023A (en) | Rust-proof oil for metal processing molding | |
| CN104404546A (en) | Antirust cleaning agent for sensor galvanized shell | |
| CN104404543A (en) | Antirust antifouling cleaning solution for sensor galvanized shell | |
| CN104562056A (en) | Scale-rust removing agent for zinc-plated shell of sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170718 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20190619 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |