CN105297045B - A kind of stainless steel pipe surface cleaning method - Google Patents
A kind of stainless steel pipe surface cleaning method Download PDFInfo
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- CN105297045B CN105297045B CN201510810057.2A CN201510810057A CN105297045B CN 105297045 B CN105297045 B CN 105297045B CN 201510810057 A CN201510810057 A CN 201510810057A CN 105297045 B CN105297045 B CN 105297045B
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Abstract
Dehydrogenation step is removed slag, washes and dries the invention discloses a kind of stainless steel pipe surface cleaning method, including alkalinity potassium permanganate pretreatment, pickling.Stainless steel tube cleaning method in the present invention can be cleaned effectively to stainless steel tube, effectively remove the oxide skin and corrosion product of stainless steel pipe surface, be especially suitable for stainless steel tube of the cleaning with crimping or weld seam.
Description
Technical field
The present invention relates to a kind of method for cleaning surface of stainless steel tube, and in particular to a kind of removable stainless steel pipe surface oxygen
Change the cleaning method of skin and corrosion product.
Background technology
Stainless steel tube is also easy to produce corrosion and aoxidized during preparation and use, especially there is weld seam, crimping, pipe bent position
Surface is also easy to produce thicker densified oxidation scale and compares the corrosion product of concentration.To lift the appearance ratings of stainless steel tube, simultaneously
The service life of stainless steel tube is lifted, these corrosion products is removed and oxidation product is imperative.In currently available technology, use
More method is acid wash, but acid cleaning process is not good to thick and heavy oxide skin removal effect, easily residual, and pickling
Journey easily causes the anticaustic of stainless steel tube.
Such as Application No. 201410418455.5 is entitled《Surface of stainless steel oxide skin pickling additive and its preparation
And acid washing method》Chinese patent in disclose it is a kind of by sulfonic compound, citric acid, carboxymethyl chitosan, glycerine and
Pickling additive that water is constituted and preparation method thereof, can carry out pickling to the surface of stainless steel material.The program solves acid
Washing lotion not environmentally the problem of, but for stainless steel pipe surface obstinate oxide skin and corrosion product removal ability, the program
It is slightly inadequate.
The content of the invention
For the shortcomings of the prior art, stainless steel pipe surface oxygen can be effectively removed the invention provides one kind
Change the cleaning method of skin and corrosion product.
The technical problems to be solved by the invention are achieved by the following technical programs：
Step one, alkalinity potassium permanganate is pre-processed：Pretreatment fluid is configured, stainless steel tube 1-6 in pretreatment fluid is dipped in small
When, the formula of pretreatment fluid is sodium hydroxide 125-150g/L, sodium carbonate 30-60g/L, potassium permanganate 45-65 g/L, sodium phosphate
25-45 g/L, zinc nitrate 15-35 g/L, are heated to 95-102 DEG C, solvent is water during pretreatment by pretreatment fluid.
Institute's oxycompound in oxide skin on stainless steel tube can be further oxidized to loose by potassium permanganate in strong basicity liquid
Oxide structure, these loose oxides can gradually peel off in high temperature pretreatment fluid, sink to alkalinity potassium permanganate and locate in advance
Manage liquid bottom.Meanwhile, alkaline permanganate solution is extremely strong to stainless steel surfaces wetability, there is extremely strong removal effect to greasy dirt,
Highly effective stainless steel tube corner, weld seam, crimping etc. can be infiltrated into, remove the oxide skin covered on these corners and corrosion is produced
Thing.Because alkalinity potassium permanganate corrosion strength is strong, anticaustic is not exposed to during cleaning for protection stainless steel tube, is added
Sodium phosphate, zinc nitrate are as corrosion inhibiter, and sodium phosphate and zinc nitrate are very effective corrosion inhibiter in alkaline permanganate solution, can
Effectively protection stainless steel tube is from anticaustic.Meanwhile, also add a certain amount of sodium carbonate regulation alkalinity potassium permanganate pretreatment
The viscosity of liquid, makes the viscosity of the pretreatment fluid suitable.
Processing time in step one depending on stainless steel tube material, in general, the processing time of austenitic stainless steel
It is longer than ferritic stainless steel.Ferrite stainless steel pipe, such as 430,430Ti processing times reach can within 1 hour significantly clear
Effect is washed, no more than 2 hours, corrosion is to avoid.For Austenitic stainless steel pipe, such as 304,316,316L processing times
Then require more than 2 hours and can be only achieved promising result, typically no more than 6 hours, to avoid corrosion.From treatment effect
Come, the treatment fluid in the present invention is more suitable for handling ferrite stainless steel pipe.
Because with the addition of substantial amounts of salt in aqueous solvent, therefore the pretreatment fluid boiling point is higher, and the present inventor is in practice
It was found that, when the pretreatment fluid is heated into more than 95 DEG C, the cleaning performance of the pretreatment fluid is optimal, and is optimal when reaching 98 DEG C
Selection, because solvent is that water can not also be heated to the temperature higher than its boiling point.
Step 2, removes slag：Utilize what is treated in pickle soaking and washing or circulating fluid cleaning step one at normal temperatures
Stainless steel tube is until stainless steel pipe surface light, pickling formula of liquid is hydrochloric acid 15-35g/L, nitric acid 30-55g/L, phosphoric acid 20-40
G/L, hydrogen peroxide 60-110g/L, benzimidazole 3-5 g/L, polyethylene glycol 22-45 g/L, sulfosalicylic acid 5-8 g/L, it is remaining
Measure as water.
For the stainless steel tube Jing Guo step one, its surface scale and corrosion product have pitched, and part has come off.This
When, soaking and washing or circulating fluid cleaning are carried out to it using pickle can effectively remove stainless steel pipe surface residual oxidization completely
Skin and corrosion product, and stainless steel pipe surface can be made in the effect of light.
Further preferably, pickling formula of liquid is hydrochloric acid 25-35g/L, nitric acid 30-38g/L, phosphoric acid 20-25 g/L, peroxidating
Hydrogen 80-95g/L, the g/L of benzimidazole 5, polyethylene glycol 22-35g/L, the g/L of sulfosalicylic acid 6, surplus is water.
Pickle in the present invention act as residual oxidization skin and corrosion product in removal step one, with existing process not
Together, the acid cleaning process in the present invention is without heating, using the cooperation of phosphoric acid and hydrogen peroxide, effectively further scale removal.
Meanwhile, using benzimidazole and phosphoric acid cooperation and effectively prevent stainless steel tube from corroding in acid cleaning process.Further
Ground, using the compounding use of sulfosalicylic acid and polyethylene glycol, can strengthen the brightness of stainless steel tube, lift its own anticorrosive
Ability.
Step 3, washing：The stainless steel tube after step 2 is handled is rinsed repeatedly at normal temperatures using High-Pressure Water
To stainless steel pipe surface noresidue.The rinse water used in water-washing step is one kind in deionized water, distilled water, running water.
Step 4, dries dehydrogenation.
After stainless steel tube cleaning, surface easily remains a certain amount of Hydrogen chemisorption in matrix, especially residues in steel pipe
On wall, Hydrogen Brittleness Phenomena is easily caused.To solve this problem, the stainless steel tube after washing can be placed in baking oven at 180-220 DEG C
Lower baking removes remaining hydrogen in 0.5-2 hours.
Further preferably, baking time is 1 hour.
The present invention has the advantages that：
1st, the stainless steel tube cleaning method in the present invention can be cleaned effectively to stainless steel tube, effectively remove stainless steel tube
The oxide skin and corrosion product on surface.
2nd, the stainless steel tube cleaning fluid permeance property in the present invention is good, is especially suitable for cleaning stainless with crimping or weld seam
Steel pipe.
3rd, the stainless steel tube cleaning method in the present invention can avoid the anticaustic to stainless steel tube, while elimination of hydrogen embrittlement is existing
As.
Embodiment
Present disclosure is further described below by embodiment.
Step one, alkalinity potassium permanganate is pre-processed.
Commercially available stainless steel material is selected, the steel pipe sample for rolling into 50cm length carries out cleaning experiment.Steel pipe sample material is
Austenitic stainless steel 12Cr17Ni7,12Cr18Ni9,12Cr18Ni9Si3,06Cr19Ni10,10Cr18Ni12, ferrite stainless
Steel 06Cr13Al, 10Cr15,022Cr11NbTi, 10Cr17, Y10Cr17,019Cr18MoTi, totally 11 kinds of materials.Austenite is not
Rust steel processing time is 3 hours, and ferritic stainless steel processing time is 1 hour.
Pretreatment fluid formula is as follows, and pretreatment temperature is set as 98 DEG C.
Step 2, removes slag.
At normal temperatures using the stainless steel tube treated in pickle soaking and washing step one until stainless steel pipe surface light
It is bright.
Pickling formula of liquid, technique and suitable material are as follows（Pickle solvent is deionized water）.
Step 3, washing.
The stainless steel tube after step 2 is handled is rinsed to stainless steel tube table repeatedly at normal temperatures using High-Pressure Water
Face noresidue.Three steps of summary find that ferrite stainless steel pipe surface-brightening degree is more preferable than austenitic stainless steel.
Step 4, dries dehydrogenation.
Stainless steel tube after washing is placed in baking oven and toasted 1 hour at 200 DEG C.
Stainless steel tube after cleaning method processing in the present invention, surface-brightening, surface scale and corrosion product are obtained
To effective removal, the deep processing such as it may be directly applied to be passivated, electroplate, colour and handling.
Claims (8)
1. a kind of stainless steel pipe surface cleaning method, it is characterised in that comprise the following steps：
Step one, alkalinity potassium permanganate is pre-processed：Pretreatment fluid is configured, stainless steel tube is dipped in pretreatment fluid, pretreatment fluid
Formula for sodium hydroxide 125-150g/L, sodium carbonate 30-60g/L, potassium permanganate 45-65 g/L, sodium phosphate 25-45 g/L,
Zinc nitrate 15-35 g/L, are heated to 95-102 DEG C, solvent is water during pretreatment by pretreatment fluid；Stainless steel tube be ferrite not
During rust steel, pretreatment time is 1-2 hours；When stainless steel tube is austenitic stainless steel, pretreatment time is 2-6 hours；
Step 2, removes slag：It is stainless using what is treated in pickle soaking and washing or circulating fluid cleaning step one at normal temperatures
Steel pipe until stainless steel pipe surface light, pickling formula of liquid be hydrochloric acid 15-35g/L, nitric acid 30-55g/L, phosphoric acid 20-40 g/L,
Hydrogen peroxide 60-110g/L, benzimidazole 3-5 g/L, polyethylene glycol 22-45 g/L, sulfosalicylic acid 5-8 g/L, surplus is
Water；
Step 3, washing：The stainless steel tube after step 2 is handled is rinsed to not repeatedly at normal temperatures using High-Pressure Water
Rust steel tube surface noresidue；
Step 4, dries dehydrogenation：Stainless steel tube after washing is placed in baking oven and toasted 0.5-2 hours at 180-220 DEG C.
2. the stainless steel pipe surface cleaning method as described in claim 1, it is characterised in that：Alkalinity potassium permanganate pretreatment fluid
It is formulated as the g/L of sodium hydroxide 135, the g/L of sodium carbonate 50, the g/L of potassium permanganate 55, the g/L of sodium phosphate 35, zinc nitrate 30g/L.
3. the stainless steel pipe surface cleaning method as described in claim 1, it is characterised in that：Alkalinity potassium permanganate will when pre-processing
Pretreatment fluid is heated to 98 DEG C.
4. the stainless steel pipe surface cleaning method as described in claim 1, it is characterised in that：Pickling formula of liquid in the step that removes slag
For hydrochloric acid 25-35g/L, nitric acid 30-38g/L, phosphoric acid 20-25 g/L, hydrogen peroxide 80-95g/L, the g/L of benzimidazole 5, poly- second
Glycol 22-35g/L, the g/L of sulfosalicylic acid 6, surplus is water.
5. the stainless steel pipe surface cleaning method as described in claim 1, it is characterised in that：The rinse water used in water-washing step
For one kind in deionized water, distilled water, running water.
6. the stainless steel pipe surface cleaning method as described in claim 1, it is characterised in that：Dry baking temperature in dehydrogenation step
For 200 DEG C.
7. the stainless steel pipe surface cleaning method as described in claim 1, it is characterised in that：Duration is toasted in drying dehydrogenation step
For 1 hour.
8. the stainless steel pipe surface cleaning method as described in claim 1, it is characterised in that：The stainless steel tube is with crimping
Or the stainless steel tube of weld seam.
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| CN201510810057.2A CN105297045B (en) | 2015-11-23 | 2015-11-23 | A kind of stainless steel pipe surface cleaning method |
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| CN201510810057.2A CN105297045B (en) | 2015-11-23 | 2015-11-23 | A kind of stainless steel pipe surface cleaning method |
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| CN105297045B true CN105297045B (en) | 2017-11-07 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834696A (en) * | 2016-05-19 | 2016-08-10 | 南京高达不锈钢有限公司 | Preparation method of stainless steel pipe for air conditioner |
| CN105908197B (en) * | 2016-06-22 | 2017-09-12 | 山西艾尔德添加剂新技术有限公司 | A kind of surface of stainless steel oxide skin pickling additive and preparation and acid washing method |
| CN107267731A (en) * | 2017-07-01 | 2017-10-20 | 浙江义腾特种钢管有限公司 | A kind of production technology for automobile exhaust system stainless steel tube |
| CN109207930A (en) * | 2018-08-31 | 2019-01-15 | 江苏鼎启科技有限公司 | A kind of surface of metal product processing method |
| CN112831793A (en) * | 2019-11-25 | 2021-05-25 | 中微半导体设备(上海)股份有限公司 | Cleaning method of gas spray header |
| CN110952096A (en) * | 2019-12-25 | 2020-04-03 | 南京派诺金属表面处理技术有限公司 | Carbon steel surface decarbonizer and decarbonization process thereof |
| CN111570445A (en) * | 2020-05-18 | 2020-08-25 | 上海焕星新能源科技有限公司 | Stainless steel tank cleaning method |
| CN112281192A (en) * | 2020-09-13 | 2021-01-29 | 泰州市航宇电器有限公司 | Mirror surface treatment method for stainless steel high-temperature oxide layer |
| CN112553636A (en) * | 2020-11-13 | 2021-03-26 | 沈阳航天新光集团有限公司 | Reducing industrial pure titanium pipeline pickling process |
| CN113774386A (en) * | 2021-08-26 | 2021-12-10 | 浙江交工新材料有限公司 | Metal corrugated pipe surface treatment acid solution |
| CN113957446A (en) * | 2021-10-21 | 2022-01-21 | 上海外高桥造船有限公司 | Method for treating inner surface of ship pipeline |
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| US6450183B1 (en) * | 1999-12-22 | 2002-09-17 | Kolene Corporation | Composition, apparatus, and method of conditioning scale on a metal surface |
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| CN1063124A (en) * | 1992-01-08 | 1992-07-29 | 大冶钢厂 | Peeling method for enabling stainless steel surface to achieve silvery effect |
| CN101285196A (en) * | 2008-05-30 | 2008-10-15 | 重庆钢铁(集团)有限责任公司 | Processing technology for surface oxide skin of aviation tubes |
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Effective date of registration: 20191210 Address after: Xintang Zhang Village Liuhe Town Taicang city Suzhou City, Jiangsu province 215400 Patentee after: Suzhou match Pml Precision Mechanism Ltd Address before: 528518, 2, 1st Street, Ming Hi Road, Gaoming Town, Gaoming District, Guangdong, Foshan Patentee before: FOSHAN CITY GAOMING DISTRICT JUNPIN METAL PRODUCT CO., LTD. |
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