CN106756940A - A kind of chemical treatment method for surfaces for low carbon steel plate before welding - Google Patents
A kind of chemical treatment method for surfaces for low carbon steel plate before welding Download PDFInfo
- Publication number
- CN106756940A CN106756940A CN201611152012.1A CN201611152012A CN106756940A CN 106756940 A CN106756940 A CN 106756940A CN 201611152012 A CN201611152012 A CN 201611152012A CN 106756940 A CN106756940 A CN 106756940A
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- Prior art keywords
- steel plate
- low carbon
- carbon steel
- corrosion
- impurity
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Classifications
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- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/37—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also hexavalent chromium compounds
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
-
- 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
Abstract
The invention discloses a kind of chemical treatment method for surfaces for low carbon steel plate before welding, specifically include the mechanical derusting of steel surface, removal of impurities and chemical derusting, removal of impurities treatment removes corrosion and the impurity on surface, also it is simultaneously that the strong impurity of adhesive force and corrosion produce loosening, surface cleaning processing removes the greasy dirt and impurity on its surface etc., then once it is passivated the preliminary performance with antirust, after drying, secondary passivity treatment makes the intermolecular separation of deep layer on its surface, last washing removes passivating solution and dries, anti-corrosion protective film is formed on the surface of steel, improve the anticorrosive of steel plate, resistant to rust ability, slow down the speed got rusty, steel plate is reduced because corrosion rate of the later stage in adverse circumstances is accelerated in welding, so as to be able to the service life of extending steel plate.
Description
Technical field
It is more particularly to a kind of to be welded for low carbon steel plate the present invention relates to the technical field of surface of mechanical workpieces
Preceding chemical treatment method for surfaces.
Background technology
Surface treatment be artificially formed on substrate material surface one layer from matrix machinery, process based prediction model it is different
Top layer process；It is the foreign matter that substrate surface attachment or generation are removed before application, to improve substrate surface and apply
The adhesive force of layer assigns surface with the process of certain corrosion resisting property.Surface treatment belong to most ancient technology, be the mankind most
A kind of early technology grasped, corrosion resistance, wearability, decoration or other features requirements the purpose is to meet product.
During processing, transport, storage etc., surface is often with oxide skin, the molding sand of iron rust molding residual, weldering for workpiece
Slag, dust and oil and other dirts.Wanting coating can be securely attached on workpiece surface, just must be to workpiece table before application
Face is cleared up, and otherwise, not only influences the adhesion and corrosion resistance of coating and metal, but also parent metal can be made in sight
Make to have and can also continue corrosion under coating protection, make disbonding, influence the mechanical performance and service life of workpiece.Therefore workpiece is applied
Surface treatment before paint is to obtain superior in quality overcoat, extends important guarantee and the measure of product service life.
At present during the use of metal works, the component of machine for especially rotating, because of the heat that friction is produced, pole
Big influence its performance, service life is short, there is very big defect, is the performance for improving component of machine, enhancing
Anticorrosive, the resistant to rust ability on surface, spy disclose a kind of chemical surface treatment for low carbon steel plate before welding of the invention
Fang Fangfa.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the invention provides a kind of surface for low carbon steel plate before welding
Chemical treatment side's method method.
The technical solution adopted in the present invention is：
A kind of chemical treatment method for surfaces for low carbon steel plate before welding, its process step specifically includes as follows：
(1) first needing with steel wire lump welding piece to carry out corrosion, impurity, membrane to the surface of low carbon steel plate carries out mechanical treatment, to go
Except the corrosion of its surface portion, impurity, membrane and make the corrosion pine of adhesive force strong viscous glutinous impurity, membrane and low carbon steel plate deep layer
Dynamic, its processing mode is that rolling friction or sliding friction carry out stripping low carbon steel plate, used time 3-5min/cm2；
(2) cleaning removal corrosion, viscous glutinous impurity, membrane are carried out to the low carbon steel plate after treatment in step (1)；Cleaning fluid used by
The following raw material is made：Sulfonic acid 2-4g/L, sodium chloride 5-8g/L, remaining be water；
(3) after the low carbon steel plate after being processed through step (2) is cleaned, then a Passivation Treatment is carried out, passivation temperature is 55-65
DEG C, the pressure vibration of 1.2-1.4MP, 26-30 times/second of its vibration frequency；
(4) low carbon steel plate after being once passivated in step (3) carries out drying and processing, and drying temperature is 70-80 DEG C, and the used time is
40-50s, is dried using circulating air, and hot wind flow speed is 20-24m/s；
(5) low carbon steel plate after being dried through step (4) is immersed in be loaded with the container of secondary passivity liquid and carries out at secondary passivity
Reason, passivation temperature is 90-100 DEG C, and the used time is 3-5min, and the passivating solution is made up of the following raw material：Chromic acid 15-20g/L, hydrogen fluorine
Sour 1-2g/L, ferrous sulfate 8-12g/L, remainder are water；
(6) after the low carbon steel plate after step (5) is passivated rinses 2-3min with water, drying and processing is carried out, you can.
Further, the cleaning fluid described in step (2) is contained in closed container, with 40-50 DEG C, the pressure of 1.2-1.5MP
Force vibration is cleaned, the 10-20 times/second of its vibration frequency.
Further, a Passivation Treatment described in step (3) with a passivating solution be made up of the following raw material：Secondary phosphorous
Sour sodium 20-24g/L, CR-9 emulsifying agent 10-14g/L, NaOH 2-4g/L, phosphatase 11-3g/L, remainder are water.
Sulfonic acid can use beta-naphthalenesulfonic-acid etc..
Beneficial effects of the present invention：Simple with method, it is easy to operate, use cost is low, forms anti-on the surface of steel plate
Corrosion protection film, improves anticorrosive, the resistant to rust ability of steel plate, slows down the speed got rusty, after reducing steel plate because of welding quickening
Phase adverse circumstances corrosion rate, so as to be able to the service life of extending steel plate, it is adaptable to the surface treatment of Q235 steel.
Specific embodiment
Embodiment 1
A kind of chemical treatment method for surfaces for low carbon steel plate before welding, its process step specifically includes as follows：
(1) first needing with steel wire lump welding piece to carry out corrosion, impurity, membrane to the surface of low carbon steel plate carries out mechanical treatment, to go
Except the corrosion of its surface portion, impurity, membrane and make the corrosion pine of adhesive force strong viscous glutinous impurity, membrane and low carbon steel plate deep layer
Dynamic, its processing mode is that rolling friction or sliding friction carry out stripping low carbon steel plate, used time 3min/cm2；
(2) cleaning removal corrosion, viscous glutinous impurity, membrane are carried out to the low carbon steel plate after treatment in step (1)；Cleaning fluid used by
The following raw material is made：Sulfonic acid 2g/L, sodium chloride 5g/L, remaining be water；
(3) after the low carbon steel plate after being processed through step (2) is cleaned, then a Passivation Treatment is carried out, passivation temperature is 55 DEG C,
The pressure vibration of 1.2MP, its time/second of vibration frequency 26；
(4) low carbon steel plate after being once passivated in step (3) carries out drying and processing, and drying temperature is 70 DEG C, and the used time is 40s,
Dried using circulating air, hot wind flow speed is 20m/s；
(5) low carbon steel plate after being dried through step (4) is immersed in be loaded with the container of secondary passivity liquid and carries out at secondary passivity
Reason, passivation temperature is 90 DEG C, and the used time is 3min, and the passivating solution is made up of the following raw material：Chromic acid 15g/L, hydrofluoric acid 1g/L, sulphur
Sour ferrous iron 8g/L, remainder are water；
(6) after the low carbon steel plate after step (5) is passivated rinses 2min with water, drying and processing is carried out, you can.
Further, the cleaning fluid described in step (2) is contained in closed container, and the pressure vibration with 40 DEG C, 1.2MP is clear
Wash, its time/second of vibration frequency 10.
Further, a Passivation Treatment described in step (3) with a passivating solution be made up of the following raw material：Secondary phosphorous
Sour sodium 20g/L, CR-9 emulsifying agent 10g/L, NaOH 2g/L, phosphatase 11 g/L, remainder are water.
Embodiment 2
A kind of chemical treatment method for surfaces for low carbon steel plate before welding, its process step specifically includes as follows：
(1) first needing with steel wire lump welding piece to carry out corrosion, impurity, membrane to the surface of low carbon steel plate carries out mechanical treatment, to go
Except the corrosion of its surface portion, impurity, membrane and make the corrosion pine of adhesive force strong viscous glutinous impurity, membrane and low carbon steel plate deep layer
Dynamic, its processing mode is that rolling friction or sliding friction carry out stripping low carbon steel plate, used time 4min/cm2；
(2) cleaning removal corrosion, viscous glutinous impurity, membrane are carried out to the low carbon steel plate after treatment in step (1)；Cleaning fluid used by
The following raw material is made：Sulfonic acid 3g/L, sodium chloride 6.5g/L, remaining be water；
(3) after the low carbon steel plate after being processed through step (2) is cleaned, then a Passivation Treatment is carried out, passivation temperature is 60 DEG C,
The pressure vibration of 1.3MP, its time/second of vibration frequency 28；
(4) low carbon steel plate after being once passivated in step (3) carries out drying and processing, and drying temperature is 75 DEG C, and the used time is 45s,
Dried using circulating air, hot wind flow speed is 22m/s；
(5) low carbon steel plate after being dried through step (4) is immersed in be loaded with the container of secondary passivity liquid and carries out at secondary passivity
Reason, passivation temperature is 95 DEG C, and the used time is 4min, and the passivating solution is made up of the following raw material：Chromic acid 17g/L, hydrofluoric acid 1.5g/L,
Ferrous sulfate 10g/L, remainder are water；
(6) after the low carbon steel plate after step (5) is passivated rinses 2.5min with water, drying and processing is carried out, you can.
Further, the cleaning fluid described in step (2) is contained in closed container, and the pressure vibration with 45 DEG C, 1.4MP is clear
Wash, its time/second of vibration frequency 15.
Further, a Passivation Treatment described in step (3) with a passivating solution be made up of the following raw material：Secondary phosphorous
Sour sodium 22g/L, CR-9 emulsifying agent 12g/L, NaOH 3g/L, phosphoric acid 2g/L, remainder are water.
Embodiment 3
A kind of chemical treatment method for surfaces for low carbon steel plate before welding, its process step specifically includes as follows：
(1) first needing with steel wire lump welding piece to carry out corrosion, impurity, membrane to the surface of low carbon steel plate carries out mechanical treatment, to go
Except the corrosion of its surface portion, impurity, membrane and make the corrosion pine of adhesive force strong viscous glutinous impurity, membrane and low carbon steel plate deep layer
Dynamic, its processing mode is that rolling friction or sliding friction carry out stripping low carbon steel plate, used time 5min/cm2；
(2) cleaning removal corrosion, viscous glutinous impurity, membrane are carried out to the low carbon steel plate after treatment in step (1)；Cleaning fluid used by
The following raw material is made：Sulfonic acid 4g/L, sodium chloride 8g/L, remaining be water；
(3) after the low carbon steel plate after being processed through step (2) is cleaned, then a Passivation Treatment is carried out, passivation temperature is 65 DEG C,
The pressure vibration of 1.4MP, its time/second of vibration frequency 30；
(4) low carbon steel plate after being once passivated in step (3) carries out drying and processing, and drying temperature is 80 DEG C, and the used time is 50s,
Dried using circulating air, hot wind flow speed is 24m/s；
(5) low carbon steel plate after being dried through step (4) is immersed in be loaded with the container of secondary passivity liquid and carries out at secondary passivity
Reason, passivation temperature is 100 DEG C, and the used time is 5min, and the passivating solution is made up of the following raw material：Chromic acid 20g/L, hydrofluoric acid 2g/L,
Ferrous sulfate 12g/L, remainder are water；
(6) after the low carbon steel plate after step (5) is passivated rinses 3min with water, drying and processing is carried out, you can.
Further, the cleaning fluid described in step (2) is contained in closed container, and the pressure vibration with 50 DEG C, 1.5MP is clear
Wash, its time/second of vibration frequency 20.
Further, a Passivation Treatment described in step (3) with a passivating solution be made up of the following raw material：Secondary phosphorous
Sour sodium 24g/L, CR-9 emulsifying agent 14g/L, NaOH 4g/L, phosphoric acid 3g/L, remainder are water.
The Q235 steel plates processed by above-described embodiment 1, embodiment 2 and embodiment 3, are used 10 months in adverse circumstances
Afterwards, obtain as drawn a conclusion：
Anti-corrosion protective film is formed on the surface of steel plate, anticorrosive, the resistant to rust ability of steel plate is improved, slows down the speed got rusty,
Steel plate is reduced because corrosion rate of the later stage in adverse circumstances is accelerated in welding, so as to be able to the service life of extending steel plate.
Claims (3)
1. a kind of chemical treatment method for surfaces for low carbon steel plate before welding, it is characterised in that its process step is specifically wrapped
Include as follows：
(1) first needing with steel wire lump welding piece to carry out corrosion, impurity, membrane to the surface of low carbon steel plate carries out mechanical treatment, to go
Except the corrosion of its surface portion, impurity, membrane and make the corrosion pine of adhesive force strong viscous glutinous impurity, membrane and low carbon steel plate deep layer
Dynamic, its processing mode is that rolling friction or sliding friction carry out stripping low carbon steel plate, used time 3-5min；
(2) cleaning removal corrosion, viscous glutinous impurity, membrane are carried out to the low carbon steel plate after treatment in step (1)；Cleaning fluid used by
The following raw material is made：Sulfonic acid 2-4g/L, sodium chloride 5-8g/L, remaining be water；
(3) after the low carbon steel plate after being processed through step (2) is cleaned, then a Passivation Treatment is carried out, passivation temperature is 55-65
DEG C, the pressure vibration of 1.2-1.4MP, 26-30 times/second of its vibration frequency；
(4) low carbon steel plate after being once passivated in step (3) carries out drying and processing, and drying temperature is 70-80 DEG C, and the used time is
40-50s, is dried using circulating air, and hot wind flow speed is 20-24m/s；
(5) low carbon steel plate after being dried through step (4) is immersed in be loaded with the container of secondary passivity liquid and carries out at secondary passivity
Reason, passivation temperature is 90-100 DEG C, and the used time is 3-5min, and the passivating solution is made up of the following raw material：Chromic acid 15-20g/L, hydrogen fluorine
Sour 1-2g/L, ferrous sulfate 8-12g/L, remainder are water；
(6) after the low carbon steel plate after step (5) is passivated rinses 2-3min with water, drying and processing is carried out, you can.
2. a kind of chemical treatment method for surfaces for low carbon steel plate before welding according to claim 1, its feature exists
In, the cleaning fluid described in step (2) is contained in closed container, is cleaned with the pressure vibration of 40-50 DEG C, 1.2-1.5MP, its
10-20 times/the second of vibration frequency.
3. a kind of chemical treatment method for surfaces for low carbon steel plate before welding according to claim 1, its feature exists
In a, Passivation Treatment described in step (3) with a passivating solution be made up of the following raw material：Sodium hypophosphite 20-24g/
L, CR-9 emulsifying agent 10-14g/L, NaOH 2-4g/L, phosphatase 11-3g/L, remainder are water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611152012.1A CN106756940A (en) | 2016-12-14 | 2016-12-14 | A kind of chemical treatment method for surfaces for low carbon steel plate before welding |
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| CN201611152012.1A CN106756940A (en) | 2016-12-14 | 2016-12-14 | A kind of chemical treatment method for surfaces for low carbon steel plate before welding |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447211A (en) * | 2017-08-02 | 2017-12-08 | 合肥市田源精铸有限公司 | A kind of surface treatment method of cold-rolled steel sheet |
| CN108085666A (en) * | 2017-12-08 | 2018-05-29 | 烟台孚信达双金属股份有限公司 | A kind of method of Copper-Aluminum compound row surface passivation |
| CN109382287A (en) * | 2018-10-31 | 2019-02-26 | 安徽芜湖海螺建筑安装工程有限责任公司 | High stability anchoring piece and preparation method thereof |
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| CN105506599A (en) * | 2015-12-18 | 2016-04-20 | 安徽卧龙泵阀股份有限公司 | Passivation technology of cast steel for chemical pump |
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| CN101045992A (en) * | 2007-01-24 | 2007-10-03 | 周金弟 | Process of coating stainless steel with plastic |
| CN101709447A (en) * | 2009-12-02 | 2010-05-19 | 无锡银荣板业有限公司 | Process for producing continuous hot dip aluminum-silicon plated steel plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447211A (en) * | 2017-08-02 | 2017-12-08 | 合肥市田源精铸有限公司 | A kind of surface treatment method of cold-rolled steel sheet |
| CN108085666A (en) * | 2017-12-08 | 2018-05-29 | 烟台孚信达双金属股份有限公司 | A kind of method of Copper-Aluminum compound row surface passivation |
| CN109382287A (en) * | 2018-10-31 | 2019-02-26 | 安徽芜湖海螺建筑安装工程有限责任公司 | High stability anchoring piece and preparation method thereof |
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Application publication date: 20170531 |