CN117604511A - Surface treatment process for section steel processing - Google Patents
Surface treatment process for section steel processing Download PDFInfo
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- CN117604511A CN117604511A CN202311630442.XA CN202311630442A CN117604511A CN 117604511 A CN117604511 A CN 117604511A CN 202311630442 A CN202311630442 A CN 202311630442A CN 117604511 A CN117604511 A CN 117604511A
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- Prior art keywords
- degreasing
- steel
- treatment
- section steel
- phosphating
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 117
- 239000010959 steel Substances 0.000 title claims abstract description 117
- 238000004381 surface treatment Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005238 degreasing Methods 0.000 claims abstract description 55
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 53
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000000126 substance Substances 0.000 claims abstract description 27
- 238000005498 polishing Methods 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims abstract description 19
- 239000000654 additive Substances 0.000 claims abstract description 18
- 230000000996 additive effect Effects 0.000 claims abstract description 18
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 239000004094 surface-active agent Substances 0.000 claims abstract description 12
- 230000003647 oxidation Effects 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000000227 grinding Methods 0.000 claims description 21
- 229910019142 PO4 Inorganic materials 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 230000001590 oxidative effect Effects 0.000 claims description 16
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 16
- 239000010452 phosphate Substances 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000005265 energy consumption Methods 0.000 claims description 14
- 239000007800 oxidant agent Substances 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 8
- 239000003960 organic solvent Substances 0.000 claims description 8
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- 230000002378 acidificating effect Effects 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 7
- 230000007935 neutral effect Effects 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 claims description 4
- 238000004945 emulsification Methods 0.000 claims description 4
- 238000007127 saponification reaction Methods 0.000 claims description 4
- 230000007928 solubilization Effects 0.000 claims description 4
- 238000005063 solubilization Methods 0.000 claims description 4
- 238000009736 wetting Methods 0.000 claims description 4
- 238000005868 electrolysis reaction Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims 7
- 239000007788 liquid Substances 0.000 claims 1
- 230000008021 deposition Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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
- C23C22/78—Pretreatment of the material to be coated
-
- 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
- C23C22/07—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 phosphates
- C23C22/08—Orthophosphates
- C23C22/18—Orthophosphates containing manganese cations
- C23C22/182—Orthophosphates containing manganese cations containing also zinc cations
-
- 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
- C23C22/60—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 alkaline aqueous solutions with pH greater than 8
- C23C22/62—Treatment of iron or alloys based thereon
-
- 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
- C23C22/73—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 characterised by the process
-
- 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
-
- 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
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/19—Iron or steel
-
- 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
-
- 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
- C23G5/06—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using emulsions
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
- C25F1/02—Pickling; Descaling
- C25F1/04—Pickling; Descaling in solution
- C25F1/06—Iron or steel
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention relates to the technical field of section steel processing, and discloses a surface treatment process for section steel processing, which comprises the following steps: step one, placing profile steel on a polishing platform, and performing deburring treatment through a polishing machine; sequentially carrying out solvent degreasing, electrochemical degreasing, chemical degreasing and surfactant degreasing on the profile steel subjected to the deburring treatment; and thirdly, carrying out hydrochloric acid rust removal on the profile steel obtained in the second step, and properly putting a rust removal additive. The steel section is placed on a polishing platform, a polishing machine carries out deburring treatment, the steel section after deburring treatment is sequentially subjected to solvent degreasing, electrochemical degreasing, chemical degreasing and surfactant degreasing, the obtained steel section is subjected to hydrochloric acid rust removal, a rust removal additive is properly placed, the obtained steel section is subjected to phosphating treatment and blackening treatment, the surface of the steel section is subjected to repeated degreasing and rust removal, and a layer of blue to black ferroferric oxide protective oxidation film is formed on the surface.
Description
Technical Field
The invention relates to the technical field of section steel processing, in particular to a surface treatment process for section steel processing.
Background
The section steel is a strip steel with a certain section shape and size, and is one of four kinds of steel. The section steel is divided into a simple section steel and a complex section steel according to the section shape. The former refers to square steel, round steel, flat steel, angle steel, hexagonal steel and the like; the latter refers to I-steel, channel steel, rail, window frame steel, bent section steel, etc.
In recent years, metal surface treatment techniques have been rapidly developed and have been widely used in a variety of fields. In surface treatment technology and engineering, pretreatment plays a very important role, and is not only indispensable as a kind of "pretreatment process" before surface treatment, but also is closely related to success or failure of subsequent surface treatment.
With the rapid development of the metal processing industry, the railway manufacturing industry and the automobile industry, the quality of the steel products and the railway and automobile parts is higher, and long-term practice proves that the basic requirements of the steel processing and coating can not be met by some simple and easy pretreatment modes. Only by adopting a standard pretreatment production process, a layer of standard phosphate film and protective film can be formed on the surface of steel so as to meet the quality requirements of section steel processing and coating treatment.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a surface treatment process for processing the section steel, which solves the problem that a few simple and easy pretreatment modes can not meet the basic requirements of processing and coating the section steel through long-term practice. Only by adopting a standard pretreatment production process, a layer of standard phosphate film and protective film can be formed on the surface of steel so as to meet the quality requirements of section steel processing and coating treatment.
In order to achieve the above purpose, the invention is realized by the following technical scheme: a surface treatment process for processing section steel comprises the following steps:
step one, placing profile steel on a polishing platform, and performing deburring treatment through a polishing machine;
sequentially carrying out solvent degreasing, electrochemical degreasing, chemical degreasing and surfactant degreasing on the profile steel subjected to the deburring treatment;
step three, hydrochloric acid derusting is carried out on the section steel obtained in the step two, and a derusting additive is properly placed in the section steel;
step four, phosphating the section steel obtained in the step three;
and fifthly, blackening the section steel obtained in the step five.
Preferably, in the first step, the rotation speed of the grinding disc of the grinding machine is 1500 rpm, and the fixing device is installed on the grinding platform.
Preferably, in the second step, the solvent degreasing is to dissolve the greasy dirt in the organic solvent by utilizing structural similarity of the organic solvent and the greasy dirt, so as to achieve degreasing, the electrochemical degreasing is to take dilute alkali solution as electrolyte, take a workpiece as an electrode, perform electrolytic treatment, forcedly separate the greasy dirt from the surface of the workpiece by utilizing gas separated out from the surface of the electrode during electrolysis, the chemical degreasing is to remove the greasy dirt by utilizing saponification reaction of alkali and the greasy dirt, and the surfactant degreasing is to achieve the purpose of degreasing by utilizing the functions of emulsification, solubilization, wetting, dispersion and the like.
Preferably, in the third step, the step of hydrochloric acid rust removal means that the section steel is added into hydrochloric acid, and chemical cleaning treatment is required to pass through oxide skin and rust on the surface.
Preferably, in the third step, the rust removing additive is one or more of an acidic rust remover, a neutral rust remover and a rust converting agent.
Preferably, in the fourth step, the phosphating treatment is to put the metal into a phosphate solution containing manganese, iron and zinc for chemical treatment, so that a phosphate protective film which is difficult to dissolve in water is formed on the surface of the metal.
Preferably, in the fourth step, the phosphating treatment comprises a high temperature type, a medium temperature type and a normal temperature type, the high temperature type is 75-100 ℃, the energy consumption is high, the amount of phosphide deposition is large, the formed phosphating film thickness reaches 10-30 g/square meter, the medium temperature type is 50-75 ℃, the treatment time is 5-15min, the phosphating film thickness reaches 1-8 g/square meter, the normal temperature type is 10-30 ℃, the energy source is saved, the use is convenient, an accelerator is added besides an oxidant, the energy consumption is small, but the solution preparation is complex, and the film thickness reaches 0.2-7 g/square meter.
Preferably, in the fifth step, the blackening treatment refers to alkaline oxidation blackening, and the alkaline oxidation blackening is generally performed by using high temperature and nitrite as an oxidant, so that the steel part is heated and oxidized in an extremely concentrated alkaline oxidizing solution, and a blue to black ferroferric oxide protective oxide film is formed on the surface of the part.
The invention provides a surface treatment process for processing section steel. The beneficial effects are as follows:
according to the invention, the profile steel is placed on a polishing platform, deburring is carried out through a polisher, the profile steel after deburring is sequentially subjected to solvent degreasing, electrochemical degreasing, chemical degreasing and surfactant degreasing, the obtained profile steel is subjected to hydrochloric acid rust removal, a rust removal additive is properly placed, the obtained profile steel is subjected to phosphating and blackening, the optimal degreasing effect is achieved through the synergistic effect of several substances, the surface of the profile steel is subjected to repeated degreasing and rust removal, and a layer of blue to black ferroferric oxide protective oxidation film is formed on the surface.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
the embodiment of the invention provides a surface treatment process for processing section steel, which comprises the following steps of:
step one, placing profile steel on a polishing platform, and performing deburring treatment through a polishing machine;
sequentially carrying out solvent degreasing, electrochemical degreasing, chemical degreasing and surfactant degreasing on the profile steel subjected to the deburring treatment;
step three, hydrochloric acid derusting is carried out on the section steel obtained in the step two, and a derusting additive is properly placed in the section steel;
step four, phosphating the section steel obtained in the step three;
and fifthly, blackening the section steel obtained in the step five.
In the first step, the grinding disc rotating speed of the grinding machine is 1500 revolutions per minute, and a fixing device is arranged on a grinding platform.
In the second step, the solvent degreasing is to dissolve the greasy dirt in the organic solvent by utilizing the structural similarity of the organic solvent and the greasy dirt, so as to achieve the degreasing, the electrochemical degreasing is to take dilute alkali solution as electrolyte, take the work piece as electrode, carry on electrolytic treatment, utilize the gas precipitated on the surface of electrode while electrolyzing, force the greasy dirt to separate from the work piece surface, the chemical degreasing is to utilize alkali and greasy dirt to take place the saponification reaction to degrease, the surfactant degreasing is to utilize its effects such as emulsification, solubilization, wetting, dispersion, etc. to achieve the goal of degreasing.
In the third step, hydrochloric acid rust removal means that the section steel is added into hydrochloric acid, and chemical cleaning treatment is required to pass through oxide skin and rust on the surface.
In the third step, the rust removing additive is one or more of an acidic rust remover, a neutral rust remover and a rust converting agent.
In the fourth step, the phosphating treatment is to put the metal into a phosphate solution containing manganese, iron and zinc for chemical treatment, so that a phosphate protective film which is difficult to dissolve in water is formed on the surface of the metal.
In the fourth step, the phosphating treatment comprises a high temperature type, a medium temperature type and a normal temperature type, wherein the high temperature type refers to 75-100 ℃, the energy consumption is high, the phosphide deposition is more, the formed phosphating film thickness reaches 10-30 g/square meter, the medium temperature type refers to 50-75 ℃ and the treatment time is 5-15min, the phosphating film thickness reaches 1-8 g/square meter, the normal temperature type refers to 10-30 ℃, the energy is saved, the use is convenient, the accelerator is added in addition to the oxidant, the energy consumption is low, the solution preparation is complex, and the film thickness reaches 0.2-7 g/square meter.
In the fifth step, blackening treatment refers to alkaline oxidation blackening, which is to heat and oxidize steel parts in extremely concentrated alkaline oxidizing solution by using high temperature and nitrite as oxidizing agents, so that a blue to black ferroferric oxide protective oxide film is formed on the surfaces of the parts.
Embodiment two:
step one, placing profile steel on a polishing platform, and performing deburring treatment through a polishing machine;
step two, carrying out solvent degreasing on the profile steel subjected to the deburring treatment;
step three, hydrochloric acid derusting is carried out on the section steel obtained in the step two, and a derusting additive is properly placed in the section steel;
step four, phosphating the section steel obtained in the step three;
and fifthly, blackening the section steel obtained in the step five.
In the first step, the grinding disc rotating speed of the grinding machine is 1500 revolutions per minute, and a fixing device is arranged on a grinding platform.
In the second step, the solvent degreasing is to dissolve the greasy dirt in the organic solvent by utilizing the structural similarity between the organic solvent and the greasy dirt, so as to achieve degreasing.
In the third step, hydrochloric acid rust removal means that the section steel is added into hydrochloric acid, and chemical cleaning treatment is required to pass through oxide skin and rust on the surface.
In the third step, the rust removing additive is one or more of an acidic rust remover, a neutral rust remover and a rust converting agent.
In the fourth step, the phosphating treatment is to put the metal into a phosphate solution containing manganese, iron and zinc for chemical treatment, so that a phosphate protective film which is difficult to dissolve in water is formed on the surface of the metal.
In the fourth step, the phosphating treatment comprises a high temperature type, a medium temperature type and a normal temperature type, wherein the high temperature type refers to 75-100 ℃, the energy consumption is high, the phosphide deposition is more, the formed phosphating film thickness reaches 10-30 g/square meter, the medium temperature type refers to 50-75 ℃ and the treatment time is 5-15min, the phosphating film thickness reaches 1-8 g/square meter, the normal temperature type refers to 10-30 ℃, the energy is saved, the use is convenient, the accelerator is added in addition to the oxidant, the energy consumption is low, the solution preparation is complex, and the film thickness reaches 0.2-7 g/square meter.
In the fifth step, blackening treatment refers to alkaline oxidation blackening, which is to heat and oxidize steel parts in extremely concentrated alkaline oxidizing solution by using high temperature and nitrite as oxidizing agents, so that a blue to black ferroferric oxide protective oxide film is formed on the surfaces of the parts.
Embodiment III:
the embodiment of the invention provides a surface treatment process for processing section steel, which comprises the following steps of:
step one, placing profile steel on a polishing platform, and performing deburring treatment through a polishing machine;
step two, electrochemical degreasing is carried out on the profile steel subjected to the deburring treatment;
step three, hydrochloric acid derusting is carried out on the section steel obtained in the step two, and a derusting additive is properly placed in the section steel;
step four, phosphating the section steel obtained in the step three;
and fifthly, blackening the section steel obtained in the step five.
In the first step, the grinding disc rotating speed of the grinding machine is 1500 revolutions per minute, and a fixing device is arranged on a grinding platform.
In the second step, the electrochemical degreasing is to take dilute alkali solution as electrolyte, take the workpiece as an electrode, carry out electrolytic treatment, and force oil stains to separate from the surface of the workpiece by utilizing gas separated out from the surface of the electrode during electrolysis.
In the third step, hydrochloric acid rust removal means that the section steel is added into hydrochloric acid, and chemical cleaning treatment is required to pass through oxide skin and rust on the surface.
In the third step, the rust removing additive is one or more of an acidic rust remover, a neutral rust remover and a rust converting agent.
In the fourth step, the phosphating treatment is to put the metal into a phosphate solution containing manganese, iron and zinc for chemical treatment, so that a phosphate protective film which is difficult to dissolve in water is formed on the surface of the metal.
In the fourth step, the phosphating treatment comprises a high temperature type, a medium temperature type and a normal temperature type, wherein the high temperature type refers to 75-100 ℃, the energy consumption is high, the phosphide deposition is more, the formed phosphating film thickness reaches 10-30 g/square meter, the medium temperature type refers to 50-75 ℃ and the treatment time is 5-15min, the phosphating film thickness reaches 1-8 g/square meter, the normal temperature type refers to 10-30 ℃, the energy is saved, the use is convenient, the accelerator is added in addition to the oxidant, the energy consumption is low, the solution preparation is complex, and the film thickness reaches 0.2-7 g/square meter.
In the fifth step, blackening treatment refers to alkaline oxidation blackening, which is to heat and oxidize steel parts in extremely concentrated alkaline oxidizing solution by using high temperature and nitrite as oxidizing agents, so that a blue to black ferroferric oxide protective oxide film is formed on the surfaces of the parts.
Embodiment four:
the embodiment of the invention provides a surface treatment process for processing section steel, which comprises the following steps of:
step one, placing profile steel on a polishing platform, and performing deburring treatment through a polishing machine;
step two, chemically degreasing the profile steel subjected to the deburring treatment;
step three, hydrochloric acid derusting is carried out on the section steel obtained in the step two, and a derusting additive is properly placed in the section steel;
step four, phosphating the section steel obtained in the step three;
and fifthly, blackening the section steel obtained in the step five.
In the first step, the grinding disc rotating speed of the grinding machine is 1500 revolutions per minute, and a fixing device is arranged on a grinding platform.
In the second step, the chemical degreasing is to perform degreasing by saponification reaction of alkali and greasy dirt.
In the third step, hydrochloric acid rust removal means that the section steel is added into hydrochloric acid, and chemical cleaning treatment is required to pass through oxide skin and rust on the surface.
In the third step, the rust removing additive is one or more of an acidic rust remover, a neutral rust remover and a rust converting agent.
In the fourth step, the phosphating treatment is to put the metal into a phosphate solution containing manganese, iron and zinc for chemical treatment, so that a phosphate protective film which is difficult to dissolve in water is formed on the surface of the metal.
In the fourth step, the phosphating treatment comprises a high temperature type, a medium temperature type and a normal temperature type, wherein the high temperature type refers to 75-100 ℃, the energy consumption is high, the phosphide deposition is more, the formed phosphating film thickness reaches 10-30 g/square meter, the medium temperature type refers to 50-75 ℃ and the treatment time is 5-15min, the phosphating film thickness reaches 1-8 g/square meter, the normal temperature type refers to 10-30 ℃, the energy is saved, the use is convenient, the accelerator is added in addition to the oxidant, the energy consumption is low, the solution preparation is complex, and the film thickness reaches 0.2-7 g/square meter.
In the fifth step, blackening treatment refers to alkaline oxidation blackening, which is to heat and oxidize steel parts in extremely concentrated alkaline oxidizing solution by using high temperature and nitrite as oxidizing agents, so that a blue to black ferroferric oxide protective oxide film is formed on the surfaces of the parts.
Fifth embodiment:
the embodiment of the invention provides a surface treatment process for processing section steel, which comprises the following steps of:
step one, placing profile steel on a polishing platform, and performing deburring treatment through a polishing machine;
step two, carrying out surfactant degreasing on the profile steel subjected to the deburring treatment;
step three, hydrochloric acid derusting is carried out on the section steel obtained in the step two, and a derusting additive is properly placed in the section steel;
step four, phosphating the section steel obtained in the step three;
and fifthly, blackening the section steel obtained in the step five.
In the first step, the grinding disc rotating speed of the grinding machine is 1500 revolutions per minute, and a fixing device is arranged on a grinding platform.
In the second step, the surfactant is used for degreasing by the functions of emulsification, solubilization, wetting, dispersion and the like.
In the third step, hydrochloric acid rust removal means that the section steel is added into hydrochloric acid, and chemical cleaning treatment is required to pass through oxide skin and rust on the surface.
In the third step, the rust removing additive is one or more of an acidic rust remover, a neutral rust remover and a rust converting agent.
In the fourth step, the phosphating treatment is to put the metal into a phosphate solution containing manganese, iron and zinc for chemical treatment, so that a phosphate protective film which is difficult to dissolve in water is formed on the surface of the metal.
In the fourth step, the phosphating treatment comprises a high temperature type, a medium temperature type and a normal temperature type, wherein the high temperature type refers to 75-100 ℃, the energy consumption is high, the phosphide deposition is more, the formed phosphating film thickness reaches 10-30 g/square meter, the medium temperature type refers to 50-75 ℃ and the treatment time is 5-15min, the phosphating film thickness reaches 1-8 g/square meter, the normal temperature type refers to 10-30 ℃, the energy is saved, the use is convenient, the accelerator is added in addition to the oxidant, the energy consumption is low, the solution preparation is complex, and the film thickness reaches 0.2-7 g/square meter.
In the fifth step, blackening treatment refers to alkaline oxidation blackening, which is to heat and oxidize steel parts in extremely concentrated alkaline oxidizing solution by using high temperature and nitrite as oxidizing agents, so that a blue to black ferroferric oxide protective oxide film is formed on the surfaces of the parts.
Conclusion: through placing shaped steel on the platform of polishing, carry out the burring through the polisher and handle, carry out solvent deoiling, electrochemical deoiling, chemical deoiling and surfactant deoiling with the shaped steel after the burring in proper order, carry out hydrochloric acid rust cleaning with the shaped steel that obtains to put into rust cleaning additive, carry out phosphating and blackening with the shaped steel that obtains, through adopting the synergism of several substances, reach the best deoiling effect, make shaped steel surface carry out deoiling, rust cleaning many times, the surface forms the protective oxide film of one deck blue to black ferroferric oxide simultaneously.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The surface treatment process for the section steel processing is characterized by comprising the following steps of:
step one, placing profile steel on a polishing platform, and performing deburring treatment through a polishing machine;
sequentially carrying out solvent degreasing, electrochemical degreasing, chemical degreasing and surfactant degreasing on the profile steel subjected to the deburring treatment;
step three, hydrochloric acid derusting is carried out on the section steel obtained in the step two, and a derusting additive is properly placed in the section steel;
step four, phosphating the section steel obtained in the step three;
and fifthly, blackening the section steel obtained in the step five.
2. The surface treatment process for machining a steel section according to claim 1, wherein: in the first step, the rotating speed of the grinding disc of the grinding machine is 1500 revolutions per minute, and the fixing device is arranged on the grinding platform.
3. The surface treatment process for machining a steel section according to claim 1, wherein: in the second step, the solvent degreasing is to dissolve the greasy dirt in the organic solvent by utilizing the structural similarity of the organic solvent and the greasy dirt, so as to achieve the degreasing, the electrochemical degreasing is to take dilute alkali solution as electrolyte, take a workpiece as an electrode, carry out electrolytic treatment, utilize the gas separated out on the surface of the electrode during electrolysis to forcedly separate the greasy dirt from the surface of the workpiece, the chemical degreasing is to remove the greasy dirt by utilizing the saponification reaction of alkali and the greasy dirt, and the surfactant degreasing is to achieve the degreasing purpose by utilizing the functions of emulsification, solubilization, wetting, dispersion and the like.
4. The surface treatment process for machining a steel section according to claim 1, wherein: in the third step, the step of hydrochloric acid rust removal means that the section steel is added into hydrochloric acid, and chemical cleaning treatment is required to be carried out through oxide skin and rust on the surface.
5. The surface treatment process for machining a steel section according to claim 1, wherein: in the third step, the rust removing additive is one or more of an acidic rust remover, a neutral rust remover and a rust converting agent.
6. The surface treatment process for machining a steel section according to claim 1, wherein: and fourthly, the phosphating treatment is to put the metal into a phosphate solution containing manganese, iron and zinc for chemical treatment, so that a phosphate protective film which is difficult to dissolve in water is formed on the surface of the metal.
7. The surface treatment process for machining a steel section according to claim 1, wherein: in the fourth step, the phosphating treatment comprises a high temperature type, a medium temperature type and a normal temperature type, wherein the high temperature type is 75-100 ℃, the energy consumption is high, the number of phosphide deposits is large, the formed phosphating film thickness reaches 10-30 g/square meter, the medium temperature type is 50-75 ℃, the treatment time is 5-15min, the phosphating film thickness reaches 1-8 g/square meter, the normal temperature type is 10-30 ℃, the energy source is saved, the use is convenient, the accelerator is added besides the oxidant, the energy consumption is small, the solution preparation is complex, and the film thickness reaches 0.2-7 g/square meter.
8. The surface treatment process for machining a steel section according to claim 1, wherein: in the fifth step, the blackening treatment refers to alkaline oxidation blackening, and the alkaline oxidation blackening is generally performed by adopting high temperature and nitrite as an oxidant, so that the steel parts are heated and oxidized in extremely concentrated alkaline oxidizing liquid, and a layer of blue to black ferroferric oxide protective oxide film is formed on the surfaces of the parts.
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