CN103305856B - Antirust cold-rolled steel sheet clean-out system before annealing - Google Patents
Antirust cold-rolled steel sheet clean-out system before annealing Download PDFInfo
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- CN103305856B CN103305856B CN201310241884.5A CN201310241884A CN103305856B CN 103305856 B CN103305856 B CN 103305856B CN 201310241884 A CN201310241884 A CN 201310241884A CN 103305856 B CN103305856 B CN 103305856B
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- cold
- steel sheet
- rolled steel
- cleaning
- annealing
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- 238000000137 annealing Methods 0.000 title claims abstract description 50
- 239000010960 cold rolled steel Substances 0.000 title claims abstract description 35
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 44
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 24
- BGHCVCJVXZWKCC-UHFFFAOYSA-N tetradecane Chemical compound CCCCCCCCCCCCCC BGHCVCJVXZWKCC-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 13
- YCOZIPAWZNQLMR-UHFFFAOYSA-N heptane - octane Natural products CCCCCCCCCCCCCCC YCOZIPAWZNQLMR-UHFFFAOYSA-N 0.000 claims abstract description 12
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims abstract description 12
- 235000010234 sodium benzoate Nutrition 0.000 claims abstract description 12
- 239000004299 sodium benzoate Substances 0.000 claims abstract description 12
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims abstract description 11
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims abstract description 11
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims abstract description 11
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims abstract description 10
- 239000007864 aqueous solution Substances 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 42
- 229910000831 Steel Inorganic materials 0.000 abstract description 28
- 239000010959 steel Substances 0.000 abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 238000001953 recrystallisation Methods 0.000 abstract description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005275 alloying Methods 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000005246 galvanizing Methods 0.000 abstract description 3
- 229910052725 zinc Inorganic materials 0.000 abstract description 3
- 239000011701 zinc Substances 0.000 abstract description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 13
- 239000002585 base Substances 0.000 description 10
- 239000003921 oil Substances 0.000 description 10
- 235000019198 oils Nutrition 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 6
- 238000005554 pickling Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 239000000344 soap Substances 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 239000010775 animal oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000013556 antirust agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000003352 sequestering agent Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses the front antirust cold-rolled steel sheet clean-out system of a kind of annealing, its weight percent consists of: sodium hydroxide 30 ~ 40%, sodium carbonate 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%.During use, by cold-rolled steel sheet clean-out system antirust before described annealing according to every 3 ~ 5% weight percent be added in water and make cleaning solution, the cold-rolled steel sheet in the cleaning solution of 70 ~ 85 DEG C before cleaning annealing.Before the present invention anneals antirust cold-rolled steel sheet clean-out system without intense stimulus smell, can be directly added on before cold rolled strip recrystallization annealing in cleaning section water, facilitate easy-to-use, cleaning performance is good, cleaning efficiency more than 99%, and there is excellent rust-preventing characteristic, be applicable to the cleaning of the steel grades such as cold-rolled steel sheet, alloying galvanizing plate and heat zinc coating plate, make steel plate reach more than 15 days at intermediate step rust-proof life.<!--1-->
Description
Technical field
The present invention relates to the front Cold-strip Steel Surface clean-out system of annealing, refer to the front antirust cold-rolled steel sheet clean-out system of a kind of annealing particularly.
Background technology
Cleaning is the important step before recrystallization annealing.Surface cleaning processing technique is had to pass through before recrystallization annealing, to remove oil particles and other surface residue of metallic surface, the front metallic surface of recrystallization annealing is unclean, bring pollutent into annealing process, how the surface quality of band steel after impact annealing, therefore improve cleansing power, reduce the problem that production cost is general concern before annealing.
Oil removing cleaning process before cold rolled strip recrystallization annealing is the procedure being with steel production process very important, and this operation is with the condition of surface of steel after determining annealing to a great extent, and clean-out system is the key ensureing this process quality.Cleaning way main at present before annealing is high temperature alkali cleaning.In recent years, along with the research and development of cold rolled strip steel grade are accelerated, steel grade newly developed is more, includes cold-rolled steel sheet, alloying galvanizing plate and heat zinc coating plate etc.The solidity to corrosion difference of steel grade and band steel front middle database storage time of annealing after cleaning differs, and causes steel plate easily to occur corrosion, have impact on quality product.
Summary of the invention
The defect of corrosion is easily there is, antirust cold-rolled steel sheet clean-out system before the annealing that a kind of raw material is easy to get, price is low, effective is provided before the object of the invention is to overcome cold rolled strip annealing.
For achieving the above object, antirust cold-rolled steel sheet clean-out system before the annealing designed by the present invention, its weight percent consists of: sodium hydroxide 30 ~ 40%, sodium carbonate 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, before above-mentioned annealing, the weight percent of antirust cold-rolled steel sheet clean-out system consists of: sodium hydroxide 37 ~ 38%, sodium carbonate 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 application method of antirust cold-rolled steel sheet clean-out system before present invention also offers a kind of above-mentioned annealing, the method is: by cold-rolled steel sheet clean-out system antirust before described annealing according to every 3 ~ 5% weight percent be added in water and make cleaning solution, the cold-rolled steel sheet in the cleaning solution of 70 ~ 85 DEG C before cleaning annealing.
Before the present invention anneals each compositional selecting of antirust cold-rolled steel sheet clean-out system and principle of qualification 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-soap carburetion by its chemical property, all animal and vegetable oil all belong to saponifiable oil, and these oil generate soap with alkali effect, and mineral oil is all non-saponified oil, is got rid of by surfactant washing.The mechanism of alkali cleaning greasy dirt, it is generally acknowledged the alkali in detergent solution and the vegetable and animals oils react with in greasy dirt, generates the soap and the glycerine that are easy to become solution in water, thus wipe oil, this chemical process is also known as saponification reaction.
When sodium hydrate content reaches 50%, there is good result to the cleaning of greasy dirt.For maintaining certain basicity, adopt sodium carbonate to replace a part of sodium hydroxide, make sodium hydroxide and carbonate content summation more than 50%, the sodium hydroxide cleaning performance being greater than 50% with content is more or less the same, and price is relatively cheap.
The determination of phosphate content: phosphoric acid salt has buffered pH value effect, and phosphate concn is larger, and surge capability is larger.At sodium hydroxide and carbonate content always more than 50%, when phosphate content reaches 20%, then increase phosphate concn, pH value change is little.
Sodium Benzoate is water soluble anti-rust agent, can stop the corrosion of the rear steel of cleaning.N-tetradecane base Soxylat A 25-7 significantly can reduce the surface tension of leveling precision, makes scavenging solution wetting and spreading at belt steel surface.Sodium Benzoate and n-tetradecane base Soxylat A 25-7 form rust inhibitor, with, not damaged corrosion-free to metallic surface during satisfied cleaning, make metallic surface clean, bright, and have the antirust requirement of certain inhibition after cleaning.
The water insoluble meeting of soap of the metal ions such as Fe, Ca, Mg is deposited in cleaning equipment, also can again adhere to steel plate and cause cleaning efficiency to decline.Add disodium ethylene diamine tetraacetate sequestrant in alkali cleaning agent and can form coordination compound with metal ions such as Fe, Ca, the Mg in scavenging solution, reduce the possibility that lipid acid that these metal ions and fat saponification formed is combined into metallic soap.
Beneficial effect of the present invention:
1, the present invention before annealing antirust cold-rolled steel sheet clean-out system without intense stimulus smell.
2, the present invention before annealing antirust cold-rolled steel sheet clean-out system can directly be added on before cold rolled strip recrystallization annealing in cleaning section water, facilitate easy-to-use, cleaning performance is good, cleaning efficiency more than 99%.
3, the present invention before annealing antirust cold-rolled steel sheet clean-out system there is excellent rust-preventing characteristic, be applicable to the cleaning of the steel grades such as cold-rolled steel sheet, alloying galvanizing plate and heat zinc coating plate, make steel plate reach more than 15 days at intermediate step rust-proof life.
4, the present invention before annealing antirust cold-rolled steel sheet clean-out system there is better buffered pH value, in certain cleaning temperature and concentration range, the cleaning performance still had.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1
Get sodium hydroxide 30% by weight percentage, sodium carbonate 30%, tertiary sodium phosphate 20%, Sodium Benzoate 10%, disodium ethylene diamine tetraacetate 2%, n-tetradecane base Soxylat A 25-7 8%, by antirust cold-rolled steel sheet clean-out system 1 before obtained for above-mentioned raw materials Homogeneous phase mixing annealing.
Antirust cold-rolled steel sheet clean-out system 1 before annealing to be directly added on before cold rolled strip recrystallization annealing in cleaning section water, its weight percent concentration is made to be 3%, be clean belt steel surface to be annealed under the condition of 85 DEG C at pickling temperature, after testing, cleaning efficiency reaches 99.3%, and steel plate reaches 16 days at intermediate step rust-proof life.
Embodiment 2
Get sodium hydroxide 40% by weight percentage, sodium carbonate 20%, tertiary sodium phosphate 10%, Sodium Benzoate 20%, disodium ethylene diamine tetraacetate 7%, n-tetradecane base Soxylat A 25-7 3%, by antirust cold-rolled steel sheet clean-out system 2 before obtained for above-mentioned raw materials Homogeneous phase mixing annealing.
Antirust cold-rolled steel sheet clean-out system 2 before annealing to be directly added on before cold rolled strip recrystallization annealing in cleaning section water, its weight percent concentration is made to be 5%, be clean belt steel surface to be annealed under the condition of 70 DEG C at pickling temperature, after testing, cleaning efficiency reaches 99.1%, and steel plate reaches 17 days at intermediate step rust-proof life.
Embodiment 3
Get sodium hydroxide 35% by weight percentage, sodium carbonate 25%, tertiary sodium phosphate 15%, Sodium Benzoate 15%, disodium ethylene diamine tetraacetate 4%, n-tetradecane base Soxylat A 25-7 6%, by antirust cold-rolled steel sheet clean-out system 3 before obtained for above-mentioned raw materials Homogeneous phase mixing annealing.
Antirust cold-rolled steel sheet clean-out system 3 before annealing to be directly added on before cold rolled strip recrystallization annealing in cleaning section water, its weight percent concentration is made to be 4%, be clean belt steel surface to be annealed under the condition of 75 DEG C at pickling temperature, after testing, cleaning efficiency reaches 99.2%, and steel plate reaches 15 days at intermediate step rust-proof life.
Embodiment 4
Get sodium hydroxide 33% by weight percentage, sodium carbonate 27%, tertiary sodium phosphate 18%, Sodium Benzoate 12%, disodium ethylene diamine tetraacetate 5%, n-tetradecane base Soxylat A 25-7 5%, by antirust cold-rolled steel sheet clean-out system 4 before obtained for above-mentioned raw materials Homogeneous phase mixing annealing.
Antirust cold-rolled steel sheet clean-out system 4 before annealing to be directly added on before cold rolled strip recrystallization annealing in cleaning section water, its weight percent concentration is made to be 4%, be clean belt steel surface to be annealed under the condition of 80 DEG C at pickling temperature, after testing, cleaning efficiency reaches 99.2%, and steel plate reaches 16 days at intermediate step rust-proof life.
Embodiment 5
Get sodium hydroxide 37% by weight percentage, sodium carbonate 23%, tertiary sodium phosphate 13%, Sodium Benzoate 17%, disodium ethylene diamine tetraacetate 6%, n-tetradecane base Soxylat A 25-7 4%, by antirust cold-rolled steel sheet clean-out system 3 before obtained for above-mentioned raw materials Homogeneous phase mixing annealing.
Antirust cold-rolled steel sheet clean-out system 3 before annealing to be directly added on before cold rolled strip recrystallization annealing in cleaning section water, its weight percent concentration is made to be 3%, be clean belt steel surface to be annealed under the condition of 75 DEG C at pickling temperature, after testing, cleaning efficiency reaches 99.1%, and steel plate reaches 18 days at intermediate step rust-proof life.
Embodiment 6
Get sodium hydroxide 38% by weight percentage, sodium carbonate 25%, tertiary sodium phosphate 11%, Sodium Benzoate 18%, disodium ethylene diamine tetraacetate 4%, n-tetradecane base Soxylat A 25-7 4%, by antirust cold-rolled steel sheet clean-out system 3 before obtained for above-mentioned raw materials Homogeneous phase mixing annealing.
Antirust cold-rolled steel sheet clean-out system 3 before annealing to be directly added on before cold rolled strip recrystallization annealing in cleaning section water, its weight percent concentration is made to be 3%, be clean belt steel surface to be annealed under the condition of 75 DEG C at pickling temperature, after testing, cleaning efficiency reaches 99.2%, and steel plate reaches 18 days at intermediate step rust-proof life.
Claims (1)
1. an antirust cold-rolled steel sheet clean-out system before annealing, its weight percent consists of: sodium hydroxide 37 ~ 38%, sodium carbonate 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%; Be dilute aqueous solution when before described annealing, antirust cold-rolled steel sheet clean-out system uses, its working concentration is 3 ~ 5%, and working temperature is 70 ~ 85 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310241884.5A CN103305856B (en) | 2013-06-19 | 2013-06-19 | Antirust cold-rolled steel sheet clean-out system before annealing |
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| CN201310241884.5A CN103305856B (en) | 2013-06-19 | 2013-06-19 | Antirust cold-rolled steel sheet clean-out system before annealing |
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| CN103305856A CN103305856A (en) | 2013-09-18 |
| CN103305856B true CN103305856B (en) | 2015-12-02 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 (2)
| Title |
|---|
| 低成本镀锌前清洗剂的研制;郎丰军 等;《武钢技术》;20130430;第51卷(第2期);第1页左栏末段-右栏第1段，第2页左栏第4段、左栏末段-右栏第1段、表1，第3页左栏第3段 * |
| 脱脂清洗技术在高附加值带钢生产中的应用;谢守泉;《表面技术》;20090630;第38卷(第4期);第85页右栏第3-4段，表4、5 * |
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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. |
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