CN102220591A - Pickling and passivating treatment process for stainless steel pipes - Google Patents
Pickling and passivating treatment process for stainless steel pipes Download PDFInfo
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- CN102220591A CN102220591A CN2011102105574A CN201110210557A CN102220591A CN 102220591 A CN102220591 A CN 102220591A CN 2011102105574 A CN2011102105574 A CN 2011102105574A CN 201110210557 A CN201110210557 A CN 201110210557A CN 102220591 A CN102220591 A CN 102220591A
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- stainless steel
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- acid wash
- steel pipe
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 58
- 239000010935 stainless steel Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000005554 pickling Methods 0.000 title abstract description 21
- 239000002253 acid Substances 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005260 corrosion Methods 0.000 claims abstract description 23
- 230000007797 corrosion Effects 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 239000000654 additive Substances 0.000 claims abstract description 13
- 230000000996 additive effect Effects 0.000 claims abstract description 13
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims abstract description 10
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 9
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 238000002161 passivation Methods 0.000 claims description 49
- 239000003921 oil Substances 0.000 claims description 10
- 238000004090 dissolution Methods 0.000 claims description 9
- 239000003112 inhibitor Substances 0.000 claims description 9
- 238000002203 pretreatment Methods 0.000 claims description 9
- 239000013527 degreasing agent Substances 0.000 claims description 7
- JOHZPMXAZQZXHR-UHFFFAOYSA-N pipemidic acid Chemical compound N1=C2N(CC)C=C(C(O)=O)C(=O)C2=CN=C1N1CCNCC1 JOHZPMXAZQZXHR-UHFFFAOYSA-N 0.000 claims description 7
- 229960001732 pipemidic acid Drugs 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- 229910021591 Copper(I) chloride Inorganic materials 0.000 claims description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 5
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 claims description 5
- 229940045803 cuprous chloride Drugs 0.000 claims description 5
- 239000003995 emulsifying agent Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- TVDSBUOJIPERQY-UHFFFAOYSA-N prop-2-yn-1-ol Chemical compound OCC#C TVDSBUOJIPERQY-UHFFFAOYSA-N 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 claims description 3
- 229910001651 emery Inorganic materials 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 238000005488 sandblasting Methods 0.000 claims description 2
- 238000000643 oven drying Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 9
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 7
- 230000005764 inhibitory process Effects 0.000 abstract description 4
- 239000003595 mist Substances 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000005282 brightening Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 235000011008 sodium phosphates Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- MEYZYGMYMLNUHJ-UHFFFAOYSA-N tunicamycin Natural products CC(C)CCCCCCCCCC=CC(=O)NC1C(O)C(O)C(CC(O)C2OC(C(O)C2O)N3C=CC(=O)NC3=O)OC1OC4OC(CO)C(O)C(O)C4NC(=O)C MEYZYGMYMLNUHJ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a pickling and passivating treatment process for stainless steel pipes, which comprises the steps of pretreatment, liquid preparation and pickling and passivating treatment, wherein the pickling and passivating liquid consists of 20 to 22 percent of nitric acid (with specific gravity of 1.42), 30 to 50 grams per liter of potassium dichromate, 30 to 50 grams per liter of additive and the balance of water. In the pickling and passivating treatment process, pickling and passivating are accomplished in one step to form silvery white bright beautiful surfaces of the stainless steel pipes and form high-quality passivated films, so that the surface quality of the treated metal pipes is improved and the treated metal pipes have high corrosion resistance; the descaling speed and the descaling efficiency are high; the corrosion of the metal substrates is small and the corrosion inhibition rate is high; and acid mist in a cleaning operation process is avoided, and the long-existing NOx and HF serious pollution problem of stainless steel continuous pickling and passivating is solved.
Description
Technical field
The present invention relates to a kind of surface of stainless steel treatment process, especially relate to a kind of stainless steel pipe acid wash passivation treatment process.
Background technology
Stainless corrosion resistance mainly is because surface coverage the fine and close passive film of one deck (about 1nm) as thin as a wafer, and this tunic and corrosive medium are isolated, and is the basic barrier of stainless steel protection.Stainless steel work-piece is positioned in the air can form oxide film, but the protectiveness of this film is perfect inadequately.Usually to thoroughly clean earlier, comprise alkali cleaning and pickling, use the oxygenant passivation again, could guarantee the integrity and stability of passive film.One of purpose of pickling is for Passivation Treatment creates favorable conditions, and guarantees to form the fine passive film.
Stainless steel pipe is in manufacturing processed, through transportation, line, blanking moulding and welding, the per pass operation is not as long as note slightly, at last can stay a large amount of scuffings, cut, hammer impression mark etc. at component surface, and parts of stainless steel can bring greasy dirt, iron rust, paint, welding slag and splash etc. in processes such as shaping, assembling, welding, quality inspection, and the surface usually adheres to a large amount of other metallic element dust or disparate metals particle, these materials all can influence the parts of stainless steel surface quality, the component corrosion resistance is reduced, directly influence work-ing life.In the production process of stainless steel pipe, also will be through 800～1100 ℃ high-temperature heat treatment, form very solid oxide skin (layer) after the thermal treatment on the surface.Stainless steel surface does harm rather than good because of incomplete oxide compound, the oxide skin that a variety of causes forms.These oxide skins of removing stainless steel surface prevent the stainless steel surface corrosion to carrying out next procedure processing smoothly, keep any surface finish, and the work-ing life that prolongs the stainless steel component is significant.Therefore must carry out pickling, passive surface processing to stainless steel pipe.Be control pipe fitting quality, pickling, the passivation process of stainless steel pipe proposed higher requirement.
The pickling of stainless steel pipe, Passivation Treatment often adopt pickling process in the prior art, and pickling, the passivation of stainless steel pipe are normally separately carried out, and efficient is lower.Nitric acid+hydrofluoric acid treatment is adopted in pickling usually, and its representative formula is the per-cent meter by volume, and nitric acid 20%, hydrofluoric acid are 5%, and all the other are water.Passivation adopts nitric acid+potassium bichromate to handle usually, and the passivating solution representative formula is a nitric acid 5%(volume percent), potassium bichromate 4 grams, all the other are water.When in the prior art stainless steel pipe being carried out pickling, Passivation Treatment, complex process, step is many, the proportioning of acid wash passivation liquid is usually determined according to self material and knowhow by each manufacturer, determined proportioning instability, result of use is undesirable, and it is not thorough that pickling rear tubular member surface exists oxide compound to remove, passive film forms firm inadequately, shortcomings such as smooth finish difference.In addition, also exist to descale that speed is slow, efficient is low, big to the corrosion of metallic matrix, corrosion inhibition rate is low, clean, have acid mist to produce in the passivation operation process, have influence on problems such as operator ' s health.
Summary of the invention
For solving the problems of the technologies described above, the present invention aims to provide low, effective, the eco-friendly stainless steel pipe acid wash passivation of a kind of cost treatment process method.
The objective of the invention is to be achieved through the following technical solutions:
A kind of stainless steel pipe acid wash passivation treatment process may further comprise the steps:
A) pre-treatment
Stainless steel pipe is handled, to remove the impurity on pipe fitting surface, as welding slag, splash, oil stain and oxide skin;
B) dosing
According to the proportioning and the amount of preparation of acid wash passivation liquid, calculate the preparation of carrying out acid wash passivation liquid behind the weight of various compositions or the capacity; Described acid wash passivation liquid consists of
Nitric acid (proportion 1.42) 20～22%(mass percent)
Potassium bichromate 30～50g/L
Additive 30～50g/L
All the other are water;
C) acid wash passivation
Stainless steel pipe is immersed in the acid wash passivation liquid, and dip treating till the silvery white passive film of stainless steel pipe surface formation, washes down with clear water then.
Described pre-treatment step A), remove the impurity such as welding slag, splash, oil stain and oxide skin on pipe fitting surface.Can adopt in the following method one or more to handle: as pending pipe fitting is the weld seam pipe fitting, at first weld seam and both sides welding slag thereof, splash is cleaned out, and when removing weld seam both sides foreign matter, should adopt Stainless Steel Wire brush, stainless steel shovel or emery wheel to remove; Pending pipe fitting is a machined piece, and the surface can adopt organic solvent or clean-out system to remove dirts such as surperficial oil stain, and the alkaline solution of then using 3-5% when greasy dirt is serious is oil removal, and rinses well with water purification.
To the oxide skin of stainless steel hot workpiece, the method for available mechanical sandblasting is removed, and sandblast must be pure silicon sand or aluminum oxide sand.
Removing finishes and washes away totally with water purification (chloride ion content is no more than 25mg/l in the water).
Described step B) in, the salpeter solution that measures is joined in the water of metering, the back adds the potassium bichromate and the additive of metering; Also can be earlier the additive of metering be added in the water of metering, after the salpeter solution of metering is added to the water, add the potassium bichromate of metering again.
Usually the additive working concentration is generally 3 ~ 5%, and the consumption that suitably increases additive can improve the acid wash passivation effect.
Described additive component comprises degreaser, dissolution accelerator, high-efficient corrosion inhibitor.Wherein degreaser, dissolution accelerator can be obtained from the market purchase.
Described high-efficient corrosion inhibitor is made up of following each composition (mass percent concentration):
Oneself is two fine 18～22% years old
Hexanodioic acid 5～8%
Emulsifier op-10 8～12%
Cuprous chloride 2%
Virahol 4～6%
Propiolic alcohol 4～6%
All the other are water.
The dip treating temperature and time is decided by scale thickness, sheet material material and processing requirements, removes totally fully up to oxide skin, rust, and forms silvery white passive film on the stainless steel pipe surface.Acid wash passivation can carry out under normal temperature or heated condition, preferably acid wash passivation liquid is heated to 45 ~ 55 ℃ after with the stainless steel pipe dip treating.
Preferred 5 ~ 30 minutes of dip treating time.
The inventive method has obviously positive effect:
Acid wash passivation treatment process of the present invention can make stainless steel pipe obtain the surface attractive in appearance of silvery white light, forms good passive film, has improved the surface quality of metal tube after the pickling, and has had higher erosion resistance; Acid wash passivation liquid can be finished one step of acid wash passivation, so can simplify acid washing passivation technology and equipment; The speed that descales is fast, efficient is high, and is little to the corrosion of metallic matrix, corrosion inhibition rate is high; Do not have acid mist in the cleaning operation process, solved NOx that stainless steel continuous pickling passivation exists for a long time and the severe contamination problem of HF; Acid wash passivation liquid formula and operation concentration, volume ratio, temperature and operating time etc. can according to circumstances allow to do suitable in a small amount adjustment; Acid wash passivation liquid is reusable.
In a word, the inventive method descales, and speed is fast, efficient is high, and is little to the corrosion of metallic matrix, corrosion inhibition rate is high, does not have acid mist in the cleaning operation process, improved acid wash passivation liquid work-ing life, reduced production cost, improved the acid wash passivation quality of stainless steel pipe.
Embodiment
Embodiment 1
A kind of stainless steel pipe acid wash passivation treatment process may further comprise the steps:
A) pre-treatment
(main component is sodium hydroxide, yellow soda ash, sodium phosphate, water glass to adopt alkali degreasing solution, total concn is 3-5%) carry out oil removing and clean, pending stainless steel work-piece is put into solution, flooded 15 minutes, remove impurity, spots such as surface and oil contaminant, dust, metal polishing dust.When if there is foreign matter the weld seam both sides, but the Stainless Steel Wire brush, and stainless steel shovel or emery wheel are removed.
Adopt water purification (chloride ion content is no more than 25mg/l) to rinse well the stainless steel work-piece of cleaning.
B) dosing
Prepare the pickling passivating solution according to following prescription quality percentage concentration:
Nitric acid (proportion 1.42) 20%
Potassium bichromate 40g/L
Additive 50g/L
All the other are water.
Described additive component is degreaser, dissolution accelerator and high-efficient corrosion inhibitor.
Degreaser adopts above-mentioned alkali degreasing solution, the GR-928 type indissoluble dirt dissolution accelerator that dissolution accelerator adopts market to buy.
High-efficient corrosion inhibitor is prepared according to following mass percent concentration:
Oneself is two fine 20% years old
Hexanodioic acid 7%
Emulsifier op-10 10%
Cuprous chloride 2%
Virahol 5%
Propiolic alcohol 5%
All the other are water.
C) acid wash passivation
After preparation is finished, clean the acid wash passivation pond, keep acid wash passivation pond cleaning inclusion-free, will be through steps A) stainless steel pipe that finishes of pre-treatment is immersed in the reaction tank that contains acid wash passivation liquid, be heated to 55 ℃, handled 30 minutes, and removed fully totally to oxide skin, rust, the pipe fitting surface becomes till the silvery white.
After finishing dealing with, washing once more, after workpiece is put into 90 ℃ of baking ovens baking 30 minutes to dry.
Stainless steel pipe surface-brightening after present method is handled, good decorative property, and have higher erosion resistance (by neutral salt spray test 120 hours, the surface did not have corrosion phenomenon).
Embodiment 2
A kind of stainless steel pipe acid wash passivation treatment process may further comprise the steps:
A) pre-treatment
Employing concentration is that the sodium hydroxide solution of 3-5% carries out the oil removing cleaning, and pending stainless steel pipe is put into solution, floods 15 minutes, removes impurity and spots such as surface and oil contaminant, dust, metal polishing dust.Adopt gasoline or other clean-out systems that dirts such as oil stain are handled.Oxide skin to the stainless steel hot workpiece can be removed with the method for mechanical sandblast, and pure silicon spray or aluminum oxide spray are adopted in sandblast.
Adopt water purification (chloride ion content is no more than 25mg/l) to rinse well the stainless steel work-piece of cleaning.
B) dosing
Prepare the pickling passivating solution according to following prescription quality percentage concentration:
Nitric acid (proportion 1.42) 22%
Potassium bichromate 50g/L
Additive 40g/L
All the other are water.
Described additive component comprises degreaser, dissolution accelerator and high-efficient corrosion inhibitor.
The GR-928 type indissoluble dirt dissolution accelerator that the RT-810 powerful greasy dirt detergents that degreaser adopts market to buy, dissolution accelerator adopt market to buy.
High-efficient corrosion inhibitor is prepared according to following mass percent concentration:
Oneself is two fine 22% years old
Hexanodioic acid 8%
Emulsifier op-10 12%
Cuprous chloride 2%
Virahol 6%
Propiolic alcohol 6%
All the other are water.
C) acid wash passivation
After preparation is finished, clean the acid wash passivation pond, keep acid wash passivation pond cleaning inclusion-free, will be through steps A) stainless steel pipe that finishes of pre-treatment is immersed in the reaction tank that contains acid wash passivation liquid, be heated to 45 ℃, handled 30 minutes, and removed fully totally to oxide skin, rust, the pipe fitting surface becomes till the silvery white.
After finishing dealing with, washing once more, after workpiece is put into 90 ℃ of baking ovens baking 30 minutes to dry.
Stainless steel work-piece surface-brightening after present method is handled, good decorative property, and have higher erosion resistance (by neutral salt spray test 120 hours, the surface did not have corrosion phenomenon).
Embodiment 3
Carry out the acid wash passivation of stainless steel pipe by the method for embodiment 1 and handle, difference is that described high-efficient corrosion inhibitor consists of:
Oneself is two fine 18% years old
Hexanodioic acid 5%
Emulsifier op-10 8%
Cuprous chloride 2%
Virahol 4%
Propiolic alcohol 4%
All the other are water.
Claims (8)
1. stainless steel pipe acid wash passivation treatment process may further comprise the steps:
A) pre-treatment
Stainless steel pipe is handled, to remove the impurity on pipe fitting surface;
B) dosing
According to the proportioning and the amount of preparation of acid wash passivation liquid, calculate the preparation of carrying out acid wash passivation liquid behind the weight of various compositions or the capacity; Described acid wash passivation liquid consists of
Nitric acid (proportion 1.42) 20～22%(mass percent)
Potassium bichromate 30～50g/L
Additive 30～50g/L
All the other are water;
C) acid wash passivation
Stainless steel pipe is immersed in the acid wash passivation liquid, and dip treating till the silvery white passive film of stainless steel pipe surface formation, washes down with clear water then.
2. treatment process according to claim 1 is characterized in that, described A) pre-treatment step adopts one or more in the following method:
Adopt Stainless Steel Wire brush, stainless steel shovel or emery wheel removing weld seam and both sides welding slag thereof, splash;
Adopt organic solvent or clean-out system to remove stainless steel pipe surface oil stain, dirt;
Remove the oxide skin on stainless steel pipe surface with mechanical sandblasting, sandblast is pure silicon sand or aluminum oxide sand.
3. treatment process according to claim 1 is characterized in that: after described A) pre-treatment step comprised the contaminant removal on pipe fitting surface, the water purification that chloride ion content is no more than 25mg/l in the water washed away totally.
4. treatment process according to claim 1 is characterized in that: described additive component comprises degreaser, dissolution accelerator and high-efficient corrosion inhibitor.
5. treatment process according to claim 4 is characterized in that, described high-efficient corrosion inhibitor is made up of following each composition (mass percent concentration):
Oneself is two fine 18～22% years old
Hexanodioic acid 5～8%
Emulsifier op-10 8～12%
Cuprous chloride 2%
Virahol 4～6%
Propiolic alcohol 4～6%
All the other are water.
6. treatment process according to claim 1 is characterized in that: described step C), the acid wash passivation liquid temp is 45 ~ 55 ℃.
7. treatment process according to claim 1 is characterized in that: described step C), the dip treating time is 5 ~ 30 minutes.
8. treatment process according to claim 1 is characterized in that: acid wash passivation is handled the back stainless steel pipe and is put into the baking oven drying.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102105574A CN102220591A (en) | 2011-07-26 | 2011-07-26 | Pickling and passivating treatment process for stainless steel pipes |
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|---|---|---|---|
| CN2011102105574A CN102220591A (en) | 2011-07-26 | 2011-07-26 | Pickling and passivating treatment process for stainless steel pipes |
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| CN102560512A (en) * | 2011-12-30 | 2012-07-11 | 大连三达奥克化学股份有限公司 | Tank body forged steel workpiece cleaning film treatment agent and production method thereof |
| WO2013097271A1 (en) * | 2011-12-25 | 2013-07-04 | 许继集团有限公司 | Hermetic evaporative cooling tower for direct-current electricity transmission, manufacturing method and rinsing method of same |
| CN103480610A (en) * | 2013-09-05 | 2014-01-01 | 贵州安吉航空精密铸造有限责任公司 | Cleaning method for oxide skins of semi-closed tubular castings |
| CN104032314A (en) * | 2014-06-30 | 2014-09-10 | 张家港市华尊宝特种材料科技有限公司 | Pickling and passivating treatment process of special-shaped steel tube |
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| CN112547460A (en) * | 2020-11-27 | 2021-03-26 | 上海湿腾电器有限公司 | Corrosion prevention process for offshore wind power generation rotary dehumidifier and salt mist purification filter unit |
| CN112553612A (en) * | 2020-12-31 | 2021-03-26 | 中船重工西安东仪科工集团有限公司 | Synchronous pickling passivation method for stainless steel parts |
| CN115011775A (en) * | 2022-05-26 | 2022-09-06 | 沈阳鼓风机集团核电泵业有限公司 | A kind of heat treatment and pickling passivation treatment process of thin-walled parts of nuclear main pump |
| CN117089828A (en) * | 2023-09-13 | 2023-11-21 | 山东天开钨业有限公司 | Passivation processing method for surface of spherical tooth hard alloy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1754990A (en) * | 2004-09-29 | 2006-04-05 | 大连百川通水务有限公司 | Highly efficient restrainer |
| CN1844456A (en) * | 2006-04-24 | 2006-10-11 | 凌惠刚 | High-efficient multifunctional metal detergent |
| CN101343739A (en) * | 2008-09-01 | 2009-01-14 | 铁道部运输局 | Acid washing passivation technology for stainless steel |
| CN101676435A (en) * | 2008-09-19 | 2010-03-24 | 宝山钢铁股份有限公司 | Production technology for ferrite stainless-steel grinding object with low cost and high corrosion resistance capability |
| CN101787525A (en) * | 2009-12-24 | 2010-07-28 | 四川省广汉华威铝业有限公司 | Stainless steel passivation process |
-
2011
- 2011-07-26 CN CN2011102105574A patent/CN102220591A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1754990A (en) * | 2004-09-29 | 2006-04-05 | 大连百川通水务有限公司 | Highly efficient restrainer |
| CN1844456A (en) * | 2006-04-24 | 2006-10-11 | 凌惠刚 | High-efficient multifunctional metal detergent |
| CN101343739A (en) * | 2008-09-01 | 2009-01-14 | 铁道部运输局 | Acid washing passivation technology for stainless steel |
| CN101676435A (en) * | 2008-09-19 | 2010-03-24 | 宝山钢铁股份有限公司 | Production technology for ferrite stainless-steel grinding object with low cost and high corrosion resistance capability |
| CN101787525A (en) * | 2009-12-24 | 2010-07-28 | 四川省广汉华威铝业有限公司 | Stainless steel passivation process |
Non-Patent Citations (2)
| Title |
|---|
| 《材料保护》 20030630 康书文 不锈钢酸洗、钝化工艺研究 第36卷, 第6期 * |
| 周金保: "不锈钢钝化工艺的发展", 《电镀与涂饰》 * |
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