CN114196962A - Neutral rust removing liquid and rust removing method - Google Patents
Neutral rust removing liquid and rust removing method Download PDFInfo
- Publication number
- CN114196962A CN114196962A CN202111274264.2A CN202111274264A CN114196962A CN 114196962 A CN114196962 A CN 114196962A CN 202111274264 A CN202111274264 A CN 202111274264A CN 114196962 A CN114196962 A CN 114196962A
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- rust removing
- rust
- workpiece
- neutral
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 210
- 239000007788 liquid Substances 0.000 title claims abstract description 77
- 230000007935 neutral effect Effects 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000002791 soaking Methods 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 150000007524 organic acids Chemical class 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 11
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- -1 lauryl hydroxypropyl sulfobetaine Chemical compound 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 150000002191 fatty alcohols Chemical class 0.000 claims abstract description 7
- 229940117986 sulfobetaine Drugs 0.000 claims abstract description 7
- JNGWKQJZIUZUPR-UHFFFAOYSA-N [3-(dodecanoylamino)propyl](hydroxy)dimethylammonium Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)[O-] JNGWKQJZIUZUPR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229940026210 lauramidopropylamine oxide Drugs 0.000 claims abstract description 5
- UTTVXKGNTWZECK-UHFFFAOYSA-N n,n-dimethyloctadecan-1-amine oxide Chemical compound CCCCCCCCCCCCCCCCCC[N+](C)(C)[O-] UTTVXKGNTWZECK-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 5
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 5
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims abstract description 4
- 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 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 4
- 229940081733 cetearyl alcohol Drugs 0.000 claims abstract description 4
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims abstract description 4
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 12
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 claims description 8
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 235000019253 formic acid Nutrition 0.000 claims description 6
- 239000011684 sodium molybdate Substances 0.000 claims description 6
- 235000015393 sodium molybdate Nutrition 0.000 claims description 6
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical group [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 5
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 4
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 4
- 235000015165 citric acid Nutrition 0.000 claims description 4
- 239000001630 malic acid Substances 0.000 claims description 4
- 235000011090 malic acid Nutrition 0.000 claims description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 4
- 239000011975 tartaric acid Substances 0.000 claims description 4
- 235000002906 tartaric acid Nutrition 0.000 claims description 4
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 3
- 239000011609 ammonium molybdate Substances 0.000 claims description 3
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 3
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims description 3
- 229940010552 ammonium molybdate Drugs 0.000 claims description 3
- 239000001508 potassium citrate Substances 0.000 claims description 2
- 229960002635 potassium citrate Drugs 0.000 claims description 2
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 claims description 2
- 235000011082 potassium citrates Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 239000001509 sodium citrate Substances 0.000 claims description 2
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 2
- ILRSCQWREDREME-UHFFFAOYSA-N dodecanamide Chemical compound CCCCCCCCCCCC(N)=O ILRSCQWREDREME-UHFFFAOYSA-N 0.000 claims 2
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical compound CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 claims 2
- 229940116335 lauramide Drugs 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 23
- 239000010959 steel Substances 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 8
- 230000000052 comparative effect Effects 0.000 description 28
- 239000000243 solution Substances 0.000 description 26
- 239000002253 acid Substances 0.000 description 17
- 239000000203 mixture Substances 0.000 description 15
- 238000005260 corrosion Methods 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 238000003756 stirring Methods 0.000 description 10
- 239000008367 deionised water Substances 0.000 description 7
- 229910021641 deionized water Inorganic materials 0.000 description 7
- 238000009472 formulation Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
- 239000004094 surface-active agent Substances 0.000 description 7
- 230000002195 synergetic effect Effects 0.000 description 6
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 3
- IRXRGVFLQOSHOH-UHFFFAOYSA-L dipotassium;oxalate Chemical compound [K+].[K+].[O-]C(=O)C([O-])=O IRXRGVFLQOSHOH-UHFFFAOYSA-L 0.000 description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 3
- 239000004299 sodium benzoate Substances 0.000 description 3
- 235000010234 sodium benzoate Nutrition 0.000 description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 3
- 239000000176 sodium gluconate Substances 0.000 description 3
- 229940005574 sodium gluconate Drugs 0.000 description 3
- BAERPNBPLZWCES-UHFFFAOYSA-N (2-hydroxy-1-phosphonoethyl)phosphonic acid Chemical compound OCC(P(O)(O)=O)P(O)(O)=O BAERPNBPLZWCES-UHFFFAOYSA-N 0.000 description 2
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 2
- WXHLLJAMBQLULT-UHFFFAOYSA-N 2-[[6-[4-(2-hydroxyethyl)piperazin-1-yl]-2-methylpyrimidin-4-yl]amino]-n-(2-methyl-6-sulfanylphenyl)-1,3-thiazole-5-carboxamide;hydrate Chemical compound O.C=1C(N2CCN(CCO)CC2)=NC(C)=NC=1NC(S1)=NC=C1C(=O)NC1=C(C)C=CC=C1S WXHLLJAMBQLULT-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 description 2
- 229920000056 polyoxyethylene ether Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 235000012207 sodium gluconate Nutrition 0.000 description 2
- 239000001488 sodium phosphate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 2
- 235000019801 trisodium phosphate Nutrition 0.000 description 2
- PSBDWGZCVUAZQS-UHFFFAOYSA-N (dimethylsulfonio)acetate Chemical compound C[S+](C)CC([O-])=O PSBDWGZCVUAZQS-UHFFFAOYSA-N 0.000 description 1
- BDOYKFSQFYNPKF-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetic acid;sodium Chemical compound [Na].[Na].OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O BDOYKFSQFYNPKF-UHFFFAOYSA-N 0.000 description 1
- HVYJSOSGTDINLW-UHFFFAOYSA-N 2-[dimethyl(octadecyl)azaniumyl]acetate Chemical compound CCCCCCCCCCCCCCCCCC[N+](C)(C)CC([O-])=O HVYJSOSGTDINLW-UHFFFAOYSA-N 0.000 description 1
- FDGBQHCDMSYZRC-UHFFFAOYSA-N 2-hydroxy-2-oxo-1,3,2$l^{5}-dioxaphosphinan-4-amine Chemical compound NC1CCOP(O)(=O)O1 FDGBQHCDMSYZRC-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920002197 Sodium polyaspartate Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000013556 antirust agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XTOQOJJNGPEPMM-UHFFFAOYSA-N o-(2-oxo-1,3,2$l^{5}-dioxaphosphinan-2-yl)hydroxylamine Chemical compound NOP1(=O)OCCCO1 XTOQOJJNGPEPMM-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229940046303 sodium cetostearyl sulfate Drugs 0.000 description 1
- 239000001433 sodium tartrate Substances 0.000 description 1
- 229960002167 sodium tartrate Drugs 0.000 description 1
- CLBALUNQCMWJSU-UHFFFAOYSA-L sodium;hexadecyl sulfate;octadecyl sulfate Chemical compound [Na+].CCCCCCCCCCCCCCCCOS([O-])(=O)=O.CCCCCCCCCCCCCCCCCCOS([O-])(=O)=O CLBALUNQCMWJSU-UHFFFAOYSA-L 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C23G1/088—Iron or steel solutions containing organic acids
-
- 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
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/028—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons
- C23G5/02854—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons characterised by the stabilising or corrosion inhibiting additives
- C23G5/02861—Oxygen-containing compounds
- C23G5/02864—Alcohols
Abstract
The application relates to the technical field of steel rust removal, and particularly discloses a neutral rust removing liquid and a rust removing method. The neutral rust removing liquid comprises 10-20 parts of organic acid; 5-12 parts of disodium ethylene diamine tetraacetate; 0.2-2 parts of lauramidopropyl amine oxide; 0.2-2 parts of stearyl dimethyl amine oxide; 0.2-2 parts of lauryl hydroxypropyl sulfobetaine; 1-4 parts of cetearyl alcohol sodium sulfate; 1-4 parts of molybdate; 0.5-3 parts of fatty alcohol polyoxyalkyl ether; 2-12 parts of a pH regulator; 10-20 parts of an alcohol solvent; 40-55 parts of water. The rust removing method comprises the following steps: preparing a rust removing solution: preparing a rust removing solution by adopting the neutral rust removing solution and water; soaking for rust removal: immersing the workpiece in a derusting solution to remove rust; cleaning a workpiece: cleaning the soaked and derusted workpiece; drying the workpiece: and drying the cleaned workpiece. The method and the device can improve the steel rust removing effect and reduce the rust returning phenomenon.
Description
Technical Field
The application relates to the field of steel rust removal, in particular to neutral rust removal liquid and a rust removal method.
Background
The use of ferrous materials has penetrated into various industries, which has increased the demand for ferrous materials. However, the steel material is easy to be corroded when exposed to air, on one hand, corrosion may cause direct scrapping of the steel material, thereby causing waste of a large amount of raw materials and serious economic loss, on the other hand, corrosion seriously affects normal use of the steel material, causes great influence on mechanical properties of the steel product, and buries potential safety hazards for normal use of the steel product.
The rust removing liquid is a treatment liquid for removing rust spots of steel materials. The traditional rust removing liquid usually adopts strong acid, and the strong acid type rust removing liquid has high acidity and high rust removing speed and can realize quick rust removal. However, the strong acid type rust removing solution has the following problems: firstly, the phenomenon of excessive corrosion is very easy to occur, and the surface of the steel material is damaged; secondly, the strong acid belongs to dangerous chemicals, the operation in the process of preparing the rust removing liquid is complicated, and the safety coefficient is low; thirdly, the acidity of the strong acid is high, so that acid mist is easily generated, and environment pollution is easily caused; fourthly, after the strong acid type rust removing liquid is used for treating rusted steel materials, the steel materials need to be cleaned or neutralized for multiple times, and the post-treatment procedures are relatively more; fifthly, after the strong acid type rust removing liquid removes rust on steel materials, the rust returning phenomenon is very easy to happen, and even rust can be generated again within hours or days.
Disclosure of Invention
In order to enable the rust removing liquid to still have a better rust removing effect on the premise of not using strong acid and not to return rust easily, the application provides the neutral rust removing liquid and the rust removing method.
The neutral rust removing liquid adopts the following technical scheme:
the neutral rust removing liquid comprises the following components in parts by weight:
the pH value of the distilled water is 6.78, and the pH value of the rust removing liquid prepared by the formula can be about 6.5-6.7, is relatively close to that of the distilled water, and can be positioned as neutral rust removing liquid. Aiming at the rust removal effect, experimental data show that at the room temperature of 25 ℃, the neutral rust removal liquid can realize the complete rust removal of a steel plate with the rust grade reaching 5 grade within 5-10 min, the rust removal rate of strong acid is reached, and the rust removal of the steel plate does not return to rust within at least three months. This shows that the neutral rust removing liquid has excellent rust removing performance and rust preventing performance, and reflects that the components in the scheme have good synergistic effect.
In addition, the above formulation system of the present application contains two amine oxide type surfactants, a sulfobetaine type surfactant, an "SDS sodium salt" type surfactant, and a polyoxyalkyl ether type surfactant. Experimental data show that for the formula system of the application, after the specific surfactant is replaced by other similar surfactants, the derusting performance and the rust prevention performance of the derusting liquid are obviously reduced, which shows that the specific surfactants have a synergistic effect.
Optionally, the composition comprises the following components in parts by weight:
experimental data show that the ratio of the components in the technical scheme has a large influence on the performance of the neutral rust removing liquid, and when the ratio of the components is within the range, the rust removing performance and the rust preventing performance of the obtained neutral rust removing liquid are improved. This further reflects that, for the rust removing liquid system of the present application, proper proportioning is favorable for exerting the synergistic effect among the components.
Optionally, the molybdate is selected from sodium molybdate or ammonium molybdate.
Experimental data show that either sodium molybdate or ammonium molybdate can be used as molybdate in the above-mentioned embodiments of the present application.
Optionally, the organic acid is selected from one or more of formic acid, acetic acid, butyric acid, tartaric acid, citric acid and malic acid.
The strong acid is adopted in the traditional rust removing liquid more, although the rust removing effect is better, the strong acid easily causes excessive corrosion to a workpiece substrate, and moreover, due to the strong corrosion of the strong acid, the preparation process of the rust removing liquid is also more complicated due to the use of the strong acid. In the formula system of the present application, the organic acid with weak acidity is used, and experimental data show that the organic acid can be used in the technical scheme of the present application, which also indicates that the technical scheme of the present application has a wider selectivity range for the organic acid.
Optionally, the pH regulator is selected from one or more of sodium hydroxide, sodium carbonate, potassium citrate and sodium citrate.
Experimental data show that the pH regulator can be used for regulating the pH of the formula system, the pH value of the formula system can be regulated to about 6.5-6.7, and the rust removing performance and the rust preventing performance of the neutral rust removing liquid can be guaranteed.
Optionally, the alcohol solvent is selected from one or more of methanol, ethanol, propanol, ethylene glycol and glycerol.
The alcohol solvent can be used for the neutral rust removing liquid, and is used as one of solvents, so that the dissolution stability of each component in a system is guaranteed.
The rust removal method provided by the application adopts the following technical scheme:
a rust removal method comprises the following steps:
preparing a rust removing solution: preparing a rust removing solution by adopting the neutral rust removing solution and water;
soaking for rust removal: soaking the workpiece in a derusting solution to derust;
cleaning a workpiece: cleaning the soaked and derusted workpiece;
drying the workpiece: and drying the cleaned workpiece.
According to the rust removing method, rapid rust removal can be realized only by soaking the rusted workpiece in the rust removing liquid, and other auxiliary means such as ultrasonic treatment and high temperature are not needed in the rust removing process, so that the rust removing operation is simple and controllable, the energy consumption is low, and the cost is low.
Optionally, in the step of preparing the rust removing solution, the neutral rust removing solution accounts for 8-15% of the mass of the rust removing solution.
The neutral rust removing liquid can be regarded as a concentrated product, can be diluted in proportion for use in practical application, and can be reduced to 8% in proportion to the total rust removing solution after dilution. The concentrated product can reduce the occupied area of the stock and the transportation cost, and has greater practical economic significance.
Optionally, in the step of soaking and derusting, the soaking temperature is room temperature, and the soaking time is 5-10 min.
In general, for steel plates with the corrosion grade of 5, the soaking rust removal time of the non-strong acid type rust removal liquid at normal temperature (about 25 ℃) needs at least 30 min. And the neutral rust removing liquid can realize complete rust removal only in 5min under the same conditions, greatly shortens the rust removing time, and simultaneously ensures that the rust-removed workpiece does not return to rust within at least 3 months, thereby having very strong practical significance.
Optionally, in the step of drying the workpiece, the workpiece is dried at 100-150 ℃ for 10-15 min.
After the workpiece after rust removal is cleaned and dried, the phenomenon of rust return does not occur within at least half a year. This indicates that the neutral rust removing liquid of the present application can further prolong the rust return time of the workpiece by combining with the above-mentioned drying treatment means.
In summary, the present application has the following beneficial effects:
1. the pH value of the rust removing liquid can be adjusted to be about 6.5-6.7, the rust removing liquid belongs to a neutral rust removing liquid, does not contain strong acid, cannot cause excessive corrosion of steel, and is simple and easy to operate in the preparation process;
2. at room temperature of 25 ℃, the neutral rust removing liquid can completely remove rust of a steel plate with a rust grade reaching 5 grade within 5-10 min, and the rust removing speed of the strong acid type rust removing liquid is achieved without means of additional assistance of high temperature, ultrasonic waves and the like, and the steel plate after rust removal has no rust return phenomenon within at least 3 months, namely, the neutral rust removing liquid has very excellent rust removing performance and rust preventing performance;
3. the rust removing liquid belongs to a concentrated product, can be diluted in proportion and then used in practical application, and after dilution, the proportion of the neutral rust removing liquid in the rust removing total solution can be reduced to 8%. The concentrated product can reduce the occupied area of the stock and the transportation cost, and has greater practical economic significance.
Detailed Description
The present application is described in further detail below.
Introduction of raw materials
Fatty alcohol polyoxyalkyl ether: model number is Profene LF 221.
Examples and comparative examples of neutral rust removing liquid
Examples 1 to 5 and comparative examples 1 to 11 are examples and comparative examples for neutral rust removing liquids.
Example 1
A neutral rust removing liquid comprises the following components:
wherein the content of the first and second substances,
the organic acid adopts formic acid and butyric acid with the weight ratio of 1:1, namely 5kg of formic acid and 5kg of butyric acid;
the molybdate adopts sodium molybdate;
the pH regulator adopts sodium hydroxide;
the alcohol solvent adopts methanol and propanol with the weight ratio of 1:1, namely 10kg of methanol and 10kg of propanol;
the preparation method of the neutral rust removing liquid comprises the following steps:
mixing an alcohol solvent and water, adding disodium ethylene diamine tetraacetate, lauramidopropyl amine oxide, stearyl dimethyl amine oxide, lauryl hydroxypropyl sulfobetaine, sodium cetearyl sulfate and fatty alcohol polyoxyalkyl ether, stirring until the mixture is dissolved, adding molybdate and a pH regulator, and stirring until the mixture is dissolved.
Examples 2 to 3 differ from example 1 in that: the mixture ratio composition is different, and the selection of the organic acid, the molybdate, the pH regulator and the alcohol solvent is different. The formulation ratios of examples 1 to 3 are shown in Table 1.
Table 1 formulation ratios of examples 1-3
Examples 4 to 5 and comparative examples 1 to 2 differ from example 3 in that: the components have different proportions and compositions. The formulation ratios of examples 3 to 5 and comparative examples 1 to 2 are shown in Table 2.
TABLE 2 formulation ratios of examples 3 to 5 and comparative examples 1 to 2
| Components | Example 3 | Example 4 | Example 5 | Comparative example 1 | Comparative example 2 |
| Organic acid/kg | 13.5 | 12 | 15 | 13.5 | 13.5 |
| Ethylene diamine tetraacetic acid disodium/kg | 9 | 8 | 10 | 9 | 9 |
| Lauramidopropyl amine oxide/kg | 0.8 | 1 | 0.5 | 3 | 0.1 |
| Stearyl dimethylamine oxide/kg | 0.8 | 1 | 0.5 | 0.1 | 3 |
| Lauryl hydroxypropyl sulfobetaine/kg | 0.8 | 1 | 0.5 | 0.1 | 3 |
| Cetearyl alcohol sodium sulfate/kg | 2.5 | 2 | 3 | 5 | 0.5 |
| Molybdate/kg | 2.5 | 3 | 2 | 6 | 0.5 |
| Fatty alcohol polyoxyalkyl ether/kg | 1.5 | 1 | 2 | 0.2 | 4 |
| pH regulator/kg | 7 | 5 | 9 | 7 | 7 |
| Alcohol solvent/kg | 13.5 | 12 | 15 | 13.5 | 13.5 |
| Water/kg | 48 | 45 | 50 | 48 | 48 |
Comparative examples 3 to 8 differ from example 3 in that: the components have different proportions and compositions. The formulation ratios of example 3 and comparative examples 3 to 8 are shown in Table 3.
TABLE 3 formulation ratios of example 3 and comparative examples 3-8
Comparative example 9 differs from example 3 in that: lauramidopropyl amine oxide was replaced with an equal mass of octadecyl amine oxide and lauryl hydroxypropyl sulfobetaine was replaced with an equal mass of stearyl betaine.
Comparative example 10 differs from example 3 in that: the sodium cetostearyl sulfate is replaced by fatty alcohol sodium sulfate with equal mass, and the fatty alcohol polyoxyalkyl ether is replaced by polyethylene glycol ether with equal mass.
Comparative example 11
An existing neutral rust removing liquid comprises the following components: 3kg of tartaric acid, 6kg of citric acid, 4kg of malic acid, 17kg of trisodium phosphate, 0.5kg of sodium gluconate, 2kg of fatty alcohol-polyoxyethylene ether, 3kg of hydroxyethylidene triphosphate and 65kg of deionized water;
the preparation method of the neutral rust removing liquid comprises the following steps: mixing 40kg of deionized water with tartaric acid, citric acid and malic acid, stirring for dissolving, adding hydroxyethylidene triphosphate, stirring for dissolving, adding sodium gluconate, stirring for dissolving, adding trisodium phosphate, stirring for dissolving, adding fatty alcohol-polyoxyethylene ether and the rest of deionized water, and stirring for dissolving.
Comparative example 12
An existing neutral rust removing liquid comprises the following components: 10kg of formic acid, 20kg of potassium oxalate, 5kg of sodium dodecyl benzene sulfonate, 8kg of sodium molybdate, 3kg of sodium benzoate, 7kg of sodium hydroxide and 47kg of deionized water;
the preparation method of the neutral rust removing liquid comprises the following steps: adding formic acid, potassium oxalate, sodium dodecyl benzene sulfonate, sodium molybdate and sodium benzoate into deionized water, stirring uniformly, adding sodium hydroxide, stirring and dissolving to obtain the product.
Comparative example 13
An existing neutral rust removing liquid comprises the following components: 10kg of aminotrimethylene phosphate, 5kg of sulfosalicylic acid, 4kg of succinic acid, 6kg of hydroxyethylidene diphosphonic acid, 10kg of sodium hydroxide, 3kg of sodium polyaspartate, 2kg of sodium benzoate, 2kg of D-sodium gluconate, 2kg of DL-sodium tartrate, 1kg of potassium oxalate, 1kg of benzotriazole, 1.2kg of sodium dodecyl benzene sulfonate and 52.8kg of deionized water; the preparation method of the neutral rust removing liquid comprises the following steps: mixing and dissolving 20kg of deionized water with aminotrimethylene phosphoric acid, sulfosalicylic acid, succinic acid and hydroxyethylidene diphosphonic acid, then adding the rest components, and stirring and dissolving to obtain the composition.
Comparative example 14
Commercial neutral rust removing liquid.
Examples and comparative examples of rust removal method
Examples 1 'to 9' and comparative examples 1 'to 14' are examples and comparative examples for a rust removal method.
In the following examples and comparative examples of the rust removing method, the workpieces used were all Q235 steel plates, and the specification was 100mm by 5mm, and before use, the workpieces were treated as follows: grinding and polishing the surface of a workpiece, then placing the workpiece in a humid environment until the corrosion degree of the surface of the workpiece reaches D level (according to the classification of the corrosion grade, when an oxide skin on the surface of a steel material falls off due to corrosion, a large amount of rust spots can be seen visually, and at the moment, the corrosion grade is D);
example 1'
A rust removal method comprises the following steps:
preparing a rust removing solution: preparing a rust removing solution by using the neutral rust removing solution and water in the embodiment 1, wherein the neutral rust removing solution accounts for 10% of the mass of the rust removing solution;
soaking for rust removal: soaking the workpiece in a rust removing solution for rust removal in a soaking mode, wherein the soaking temperature is 25 ℃ at room temperature, and complete rust removal is achieved after soaking for 9 min;
cleaning a workpiece: cleaning the soaked and derusted workpiece to remove the neutral derusting liquid attached to the surface;
drying the workpiece: and (5) naturally airing.
After the workpiece is subjected to the rust removing method, the phenomenon of rust return does not occur within two months.
Examples 2 ' to 5 ' and comparative examples 1 ' to 14 ' differ from example 1 ' in that: the adopted neutral rust removing liquid is different, the mass ratio of the neutral rust removing liquid to the rust removing liquid is different, and the soaking rust removing time and the rust returning condition are different. The neutral rust removing solutions obtained in examples 2 ' to 5 ' and comparative examples 1 ' to 14 ' were used in examples 2 ' to 5 and comparative examples 1 ' to 14 ', respectively, and the mass ratio of the neutral rust removing solutions in examples 1 ' to 5 ' and comparative examples 1 ' to 14 ' to the rust removing solution, the immersion rust removing time, and the rust return condition were as shown in table 4.
TABLE 4 immersion rust removal time and re-rust condition in examples 1 ' to 5 ' and comparative examples 1 ' to 14
As can be seen from table 4, compared with the existing neutral rust removal liquid: the neutral rust removing liquid has shorter soaking rust removing time, can realize complete rust removing of a steel plate with the rust grade reaching 5 grade at room temperature of 25 ℃ within 5-10 min, and does not need means such as auxiliary high temperature, ultrasonic wave and the like; moreover, the neutral rust removing liquid has longer rust returning time, the rust returning phenomenon of the steel plate after rust removal does not occur in three months, and the neutral rust removing liquid does not need to be additionally matched with treatment such as coating of an antirust agent and the like after rust removal, so that the actual operation is simpler and more convenient. The experimental data show that the neutral rust removing liquid has excellent rust removing performance and rust preventing performance, and reflects that the components of the neutral rust removing liquid have excellent synergistic effect.
It can be further seen from example 3 ' and comparative examples 3 ' to 10 ' that, when some of the components of the present application are changed (including replacing the components with other components of the present application in an equal mass form or replacing the components with other components of the general category to which the components belong in an equal mass form), the rust removing performance and the rust preventing performance of the obtained rust removing liquid are reduced to different degrees, which further reflects the synergistic effect among the components of the present application.
As can be further seen from the examples 3 'to 5' and the comparative examples 1 'to 2', for the neutral rust removing liquid, the ratio of the components has a large influence on the rust removing performance and the rust preventing performance of the neutral rust removing liquid, and when the ratio of the components is within the range of the examples 3 'to 5', the obtained neutral rust removing liquid has higher rust removing performance and rust preventing performance. This further reflects that, for the rust removing liquid system of the present application, proper proportioning is favorable for exerting the synergistic effect among the components.
Effect of concentration of derusting solution on derusting performance
The difference between the embodiments 6 ' to 7 ' and the embodiment 3 ' is that the mass fraction of the neutral rust removing liquid in the rust removing solution is different in the rust removing solution preparation step. The mass fractions of the neutral rust removing solutions in examples 6 ' to 7 ' and 3 ' in the rust removing solution and the rust removing conditions are shown in table 5.
TABLE 5 Effect of concentration of Rust removing solution on Rust removing Performance and Rust preventing Performance
| Test workpiece | Concentration of rust removing liquid | Soaking rust removal time |
| Example 3' | 10％ | Complete derusting is achieved after soaking for 5min |
| Example 6' | 8％ | Complete derusting is achieved after soaking for 7min |
| Example 7' | 15％ | Complete derusting is achieved after soaking for 4min |
As can be seen from Table 5, for the neutral rust removing liquid, the concentration of the rust removing solution has a certain influence on the soaking rust removing time, and the higher the concentration is, the shorter the soaking rust removing time is.
Effect of drying treatment on Rust prevention Properties
Examples 8 ' to 9 ' are different from example 3 ' in the drying manner after the workpiece was cleaned. The drying methods and rust inhibitive performance of examples 8 ' to 9 ' and 3 ' are shown in table 6.
TABLE 6 Effect of drying treatment on Rust prevention Properties
| Test workpiece | Drying mode | Back rusting condition |
| Example 3' | Naturally drying in the air | The phenomenon of rust return does not occur within 6 months |
| Example 8' | Drying at 100 deg.C for 10min | The phenomenon of rust return does not occur within 10 months |
| Example 9' | Drying at 150 deg.C for 15min | The phenomenon of rust return does not occur within 10 months |
As can be seen from Table 6, after the workpiece is soaked for derusting and cleaned, the workpiece is dried, so that the antirust performance of the workpiece can be improved, the antirust time can be prolonged to 10 months, and the antirust performance is excellent.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. The neutral rust removing liquid is characterized by comprising the following components in parts by weight:
10-20 parts of organic acid;
5-12 parts of disodium ethylene diamine tetraacetate;
0.2-2 parts of lauramidopropyl amine oxide;
0.2-2 parts of stearyl dimethyl amine oxide;
0.2-2 parts of lauryl hydroxypropyl sulfobetaine;
1-4 parts of cetearyl alcohol sodium sulfate;
1-4 parts of molybdate;
0.5-3 parts of fatty alcohol polyoxyalkyl ether;
2-12 parts of a pH regulator;
10-20 parts of an alcohol solvent;
40-55 parts of water.
2. The neutral rust removing liquid as claimed in claim 1, which is characterized by comprising the following components in parts by weight:
12-15 parts of organic acid;
8-10 parts of disodium ethylene diamine tetraacetate;
0.5-1 part of lauramide propyl amine oxide;
0.5-1 part of stearyl dimethyl amine oxide;
0.5-1 part of lauryl hydroxypropyl sulfobetaine;
2-3 parts of cetearyl alcohol sodium sulfate;
2-3 parts of molybdate;
1-2 parts of fatty alcohol polyoxyalkyl ether;
5-9 parts of a pH regulator;
12-15 parts of an alcohol solvent;
45-50 parts of water.
3. The neutral rust removing liquid as claimed in claim 1, characterized in that: the molybdate is selected from sodium molybdate or ammonium molybdate.
4. The neutral rust removing liquid as claimed in claim 1, characterized in that: the organic acid is selected from one or more of formic acid, acetic acid, butyric acid, tartaric acid, citric acid and malic acid.
5. The neutral rust removing liquid as claimed in claim 1, characterized in that: the pH regulator is selected from one or more of sodium hydroxide, sodium carbonate, potassium citrate and sodium citrate.
6. The neutral rust removing liquid as claimed in claim 1, characterized in that: the alcohol solvent is selected from one or more of methanol, ethanol, propanol, ethylene glycol and glycerol.
7. A rust removal method is characterized by comprising the following steps:
preparing a rust removing solution: preparing a rust removing solution by using the neutral rust removing liquid as claimed in any one of claims 1 to 6 and water;
soaking for rust removal: soaking the workpiece in a derusting solution to derust;
cleaning a workpiece: cleaning the soaked and derusted workpiece;
drying the workpiece: and drying the cleaned workpiece.
8. The rust removal method as claimed in claim 7, wherein in the step of preparing the rust removal solution, the neutral rust removal solution accounts for 8-15% of the mass of the rust removal solution.
9. A rust removal method as claimed in claim 7, wherein in the immersion rust removal step, the immersion temperature is room temperature, and the immersion time is 5-10 min.
10. A rust removal method according to claim 7, wherein in the workpiece drying treatment step, the workpiece is dried at 100 to 150 ℃ for 10 to 15 min.
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