CN118048601A - Ion nitriding composite surface modification treatment method - Google Patents
Ion nitriding composite surface modification treatment method Download PDFInfo
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- CN118048601A CN118048601A CN202410402784.4A CN202410402784A CN118048601A CN 118048601 A CN118048601 A CN 118048601A CN 202410402784 A CN202410402784 A CN 202410402784A CN 118048601 A CN118048601 A CN 118048601A
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- stainless steel
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- ion nitriding
- nitrogen
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- 238000005121 nitriding Methods 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 230000004048 modification Effects 0.000 title claims abstract description 15
- 238000012986 modification Methods 0.000 title claims abstract description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 75
- 239000010935 stainless steel Substances 0.000 claims abstract description 75
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 68
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- 238000004381 surface treatment Methods 0.000 claims abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 42
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 40
- 150000002500 ions Chemical class 0.000 claims description 40
- 239000007789 gas Substances 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 229910021529 ammonia Inorganic materials 0.000 claims description 20
- 239000008367 deionised water Substances 0.000 claims description 20
- 229910021641 deionized water Inorganic materials 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 20
- 238000002791 soaking Methods 0.000 claims description 20
- 238000009210 therapy by ultrasound Methods 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 19
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 18
- 238000005237 degreasing agent Methods 0.000 claims description 18
- 239000013527 degreasing agent Substances 0.000 claims description 18
- 239000001488 sodium phosphate Substances 0.000 claims description 18
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 18
- 239000001257 hydrogen Substances 0.000 claims description 17
- 229910052739 hydrogen Inorganic materials 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 15
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 12
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000003054 catalyst Substances 0.000 claims description 11
- 238000010849 ion bombardment Methods 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 9
- 239000003995 emulsifying agent Substances 0.000 claims description 9
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 9
- 235000011008 sodium phosphates Nutrition 0.000 claims description 9
- 229910000406 trisodium phosphate Inorganic materials 0.000 claims description 9
- 235000019801 trisodium phosphate Nutrition 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- DUIOKRXOKLLURE-UHFFFAOYSA-N 2-octylphenol Chemical compound CCCCCCCCC1=CC=CC=C1O DUIOKRXOKLLURE-UHFFFAOYSA-N 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 6
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims description 6
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 6
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 6
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 6
- 239000001307 helium Substances 0.000 claims description 5
- 229910052734 helium Inorganic materials 0.000 claims description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 5
- 150000002431 hydrogen Chemical class 0.000 claims description 5
- 238000003698 laser cutting Methods 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 26
- 230000001737 promoting effect Effects 0.000 abstract description 25
- 125000004433 nitrogen atom Chemical group N* 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- -1 nitrogen ions Chemical class 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000012466 permeate Substances 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/36—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases using ionised gases, e.g. ionitriding
- C23C8/38—Treatment of ferrous surfaces
-
- 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
- C23C22/12—Orthophosphates containing zinc cations
- C23C22/17—Orthophosphates containing zinc cations containing also 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
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/34—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in more than one step
-
- 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
- C23G5/06—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using emulsions
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses an ion nitriding composite surface modification treatment method, which comprises the following steps: cutting stainless steel plates: stainless steel sheet surface treatment: the method comprises the steps that a seepage promoting agent dripping device is arranged above a heating container, nitrogen is introduced into the heating container, the seepage promoting agent is dripped into the heating container through the seepage promoting agent dripping device, the temperature in the heating container is increased, so that the gaseous seepage promoting agent is mixed with the nitrogen, and the mixing ratio of the gaseous seepage promoting agent to the nitrogen is 1:4, a step of; and placing the stainless steel into a vacuum ion nitriding furnace, and adjusting the vacuum degree of the vacuum ion nitriding furnace to be 30-40Pa. According to the invention, after the stainless steel plate is cut, the stainless steel plate is subjected to oil removal, oxidation film removal and impurity removal, and the surface of the stainless steel plate is subjected to phosphating treatment, so that a porous and loose phosphating layer is formed on the surface of the stainless steel plate, and the diffusion and adsorption of active nitrogen atoms are promoted by mixing the gaseous permeation promoter with nitrogen, so that the ion nitriding efficiency is improved.
Description
Technical Field
The invention relates to the technical field of metal surface treatment, in particular to an ion nitriding composite surface modification treatment method.
Background
Ion nitriding is a chemical heat treatment process in which a furnace body is used as an anode, a workpiece to be treated is used as a cathode, and hundreds of volts of direct current voltage is applied between the anode and the cathode to generate glow discharge for nitriding treatment in a low-vacuum nitrogen-containing atmosphere. Ion nitriding is known by various names such as ion nitriding, glow discharge nitriding, ion bombardment nitriding, plasma nitriding, and the like.
The ion nitriding is carried out in a vacuum chamber, a workpiece is connected with a negative electrode of a high-voltage direct-current power supply, a single positive electrode is connected in vacuum, the vacuum degree of the vacuum chamber is pumped to 10Pa, and a small amount of nitrogen or mixed gas of hydrogen and nitrogen is filled. When the voltage is regulated to 400-800V, nitrogen is ionized and decomposed into nitrogen ions, hydrogen ions and electrons, and glow discharge phenomenon is generated on the surface of the workpiece. The positive ions are accelerated to bombard the surface of the workpiece under the action of an electric field, so that the workpiece is heated to nitriding temperature, nitrogen ions obtain electrons on the surface of the steel part, are reduced to nitrogen atoms, permeate the surface of the steel part and diffuse into the steel part to form a nitriding layer.
However, at present, when stainless steel is nitrided, the nitriding efficiency is low, and the processing efficiency of the stainless steel is reduced to a certain extent.
Therefore, an ion nitriding composite surface modification treatment method is provided for the problems.
Disclosure of Invention
The invention aims to provide an ion nitriding composite surface modification treatment method, which comprises the following steps:
Step one: cutting stainless steel plates: selecting a stainless steel plate, cutting the stainless steel plate by using a laser cutting machine, and polishing the cut part of the stainless steel plate by using a mirror surface polisher;
Step two: stainless steel sheet surface treatment:
① . Deoiling: preparing a chemical degreasing agent, wherein the chemical degreasing agent comprises the following raw materials in parts by weight: 40-50 parts of sodium hydroxide, 10-20 parts of sodium phosphate, 10-20 parts of emulsifying agent, 1-5 parts of trisodium phosphate, 1-3 parts of triethanolamine and the balance of water, and sequentially placing the sodium hydroxide, the sodium phosphate, the emulsifying agent, the trisodium phosphate, the triethanolamine and the water in a stirrer, and uniformly stirring to obtain a chemical degreasing agent;
Soaking the stainless steel plate in a chemical degreasing agent for 20-30min, performing ultrasonic treatment for 3-5min, taking out, cleaning with deionized water, and drying;
② . Acid-base composite treatment: soaking the deoiled stainless steel plate in a sodium hydroxide solution with the mass concentration of 1-3% for 20-30min, performing ultrasonic treatment for 3-5min, taking out, cleaning with deionized water, and drying; soaking the stainless steel plate in 1-3% sulfuric acid for 20-30min, performing ultrasonic treatment for 3-5min, taking out, cleaning with deionized water, and drying;
③ . Phosphating: preparing phosphating solution, wherein the phosphating solution comprises the following raw materials in parts by weight: 20-40 parts of phosphoric acid, 10-20 parts of nitric acid, 10-20 parts of zinc nitrate, 5-10 parts of citric acid, 1-3 parts of sodium dodecyl benzene sulfonate, 1-2 parts of octyl phenol polyoxyethylene ether and the balance of water, and sequentially placing the phosphoric acid, the nitric acid, the zinc nitrate, the citric acid, the sodium dodecyl benzene sulfonate, the octyl phenol polyoxyethylene ether and the water in a stirrer, and uniformly stirring to obtain phosphating solution;
soaking the stainless steel plate in phosphating solution, carrying out ultrasonic oscillation treatment for 1-2 hours, taking out the stainless steel plate, washing with deionized water, and drying;
Step three: mixing of gases: the method comprises the steps that a seepage promoting agent dripping device is arranged above a heating container, nitrogen is introduced into the heating container, the seepage promoting agent is dripped into the heating container through the seepage promoting agent dripping device, the temperature in the heating container is increased, so that the gaseous seepage promoting agent is mixed with the nitrogen, and the mixing ratio of the gaseous seepage promoting agent to the nitrogen is 1:4, a step of;
Step four: ion nitriding: putting stainless steel into a vacuum ion nitriding furnace, adjusting the vacuum degree of the vacuum ion nitriding furnace to be 30-40Pa, introducing helium gas to perform ion bombardment for 20-30min at the temperature of 300-350 ℃, stopping ion bombardment, and introducing mixed gas of a gaseous permeation promoter and nitrogen, wherein the mixing ratio of the mixed gas of ammonia and hydrogen is 1:1.5, heating the temperature in the nitriding furnace to 500-550 ℃, regulating the pressure in the vacuum nitriding furnace to 130-150Mpa, maintaining the treatment time for 4-6h, stopping introducing the mixed gas of the gaseous catalyst and nitrogen, introducing the mixed gas of ammonia and hydrogen into the vacuum ion nitriding furnace, increasing the pressure in the furnace to 150-200Mpa, and continuing for 1-2h to finish nitriding;
Step five: oxidation reaction: stopping introducing oxygen into the mixed gas of ammonia and hydrogen, continuously cooling to room temperature along with the furnace after the temperature in the vacuum nitriding furnace is reduced to 300-400 ℃ for 1-2h and stopping introducing oxygen after an oxide film is formed on the surface of stainless steel, and introducing ammonia after the temperature is reduced to 200-250 ℃.
Preferably, the ultrasonic power of the ultrasonic treatment in the second step is 1000W, and the frequency is 50kHz.
Compared with the prior art, the invention has the following beneficial effects:
According to the invention, after the stainless steel plate is cut, the operations of removing oil, removing oxidation films and removing impurities are carried out on the stainless steel plate, and phosphating treatment is carried out on the surface of the stainless steel plate, so that a porous and loose phosphating layer is formed on the surface of the stainless steel plate, and the diffusion and adsorption of active nitrogen atoms are promoted by mixing the gaseous permeation agent with nitrogen, so that the ion nitriding efficiency is improved, and after the ion nitriding is finished, the oxidation films are formed on the surface of the stainless steel plate by introducing oxygen, and the corrosion resistance of the stainless steel plate is improved.
Drawings
Fig. 1 is a flow chart of the method steps of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but 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.
Examples
As shown in the attached figure 1, the ion nitriding composite surface modification treatment method provided by the invention comprises the following steps:
Step one: cutting stainless steel plates: selecting a stainless steel plate, cutting the stainless steel plate by using a laser cutting machine, and polishing the cut part of the stainless steel plate by using a mirror surface polisher;
Step two: stainless steel sheet surface treatment:
① . Deoiling: preparing a chemical degreasing agent, wherein the chemical degreasing agent comprises the following raw materials in parts by weight: 40 parts of sodium hydroxide, 15 parts of sodium phosphate, 15 parts of emulsifying agent, 5 parts of trisodium phosphate, 3 parts of triethanolamine and the balance of water, and sequentially placing 40 parts of sodium hydroxide, 15 parts of sodium phosphate, 15 parts of emulsifying agent, 5 parts of trisodium phosphate, 3 parts of triethanolamine and 22 parts of water into a stirrer, and uniformly stirring to obtain a chemical degreasing agent;
Soaking the stainless steel plate in a chemical degreasing agent for 20-30min, performing ultrasonic treatment for 3-5min, taking out, cleaning with deionized water, and drying;
② . Acid-base composite treatment: soaking the deoiled stainless steel plate in a sodium hydroxide solution with the mass concentration of 1-3% for 30min, performing ultrasonic treatment for 5min, taking out, cleaning with deionized water, and drying; then soaking the stainless steel plate in sulfuric acid with the mass concentration of 3% for 30min, carrying out ultrasonic treatment for 5min, taking out, cleaning with deionized water, and drying;
wherein, the ultrasonic power of ultrasonic treatment is 1000W, and the frequency is 50kHz;
③ . Phosphating: preparing phosphating solution, wherein the phosphating solution comprises the following raw materials in parts by weight: 40 parts of phosphoric acid, 15 parts of nitric acid, 15 parts of zinc nitrate, 10 parts of citric acid, 3 parts of sodium dodecyl benzene sulfonate, 2 parts of octyl phenol polyoxyethylene ether and 15 parts of water are sequentially placed into a stirrer, and uniformly stirred to obtain phosphating solution;
soaking the stainless steel plate in phosphating solution, carrying out ultrasonic oscillation treatment for 1-2 hours, taking out the stainless steel plate, washing with deionized water, and drying;
Step three: mixing of gases: the method comprises the steps that a seepage promoting agent dripping device is arranged above a heating container, nitrogen is introduced into the heating container, the seepage promoting agent is dripped into the heating container through the seepage promoting agent dripping device, the temperature in the heating container is increased, so that the gaseous seepage promoting agent is mixed with the nitrogen, and the mixing ratio of the gaseous seepage promoting agent to the nitrogen is 1:4, a step of;
Step four: ion nitriding: putting stainless steel into a vacuum ion nitriding furnace, adjusting the vacuum degree of the vacuum ion nitriding furnace to 40Pa, introducing helium gas to perform ion bombardment for 30min at the temperature of 300 ℃, stopping ion bombardment, and introducing mixed gas of a gaseous permeation accelerator and nitrogen, wherein the mixing ratio of the mixed gas of ammonia and hydrogen is 1:1.5, heating the temperature in the nitriding furnace to 500 ℃, regulating the pressure in the vacuum nitriding furnace to 130Mpa, maintaining the treatment time for 6h, stopping introducing the mixed gas of the gaseous catalyst and nitrogen, introducing the mixed gas of ammonia and hydrogen into the vacuum ion nitriding furnace, increasing the pressure in the furnace to 150Mpa, and continuing for 2h to finish nitriding;
step five: oxidation reaction: stopping introducing oxygen into the mixed gas of ammonia and hydrogen, continuously cooling for 2 hours when the temperature in the vacuum nitriding furnace is reduced to 300 ℃, stopping introducing oxygen after an oxide film is formed on the surface of stainless steel, introducing ammonia, and cooling to room temperature along with the furnace after the temperature is reduced to 200 ℃.
Examples
An ion nitriding composite surface modification treatment method comprises the following steps:
Step one: cutting stainless steel plates: selecting a stainless steel plate, cutting the stainless steel plate by using a laser cutting machine, and polishing the cut part of the stainless steel plate by using a mirror surface polisher;
Step two: stainless steel sheet surface treatment:
① . Deoiling: preparing a chemical degreasing agent, wherein the chemical degreasing agent comprises the following raw materials in parts by weight: 40 parts of sodium hydroxide, 15 parts of sodium phosphate, 15 parts of emulsifying agent, 5 parts of trisodium phosphate, 3 parts of triethanolamine and the balance of water, and sequentially placing 40 parts of sodium hydroxide, 15 parts of sodium phosphate, 15 parts of emulsifying agent, 5 parts of trisodium phosphate, 3 parts of triethanolamine and 22 parts of water into a stirrer, and uniformly stirring to obtain a chemical degreasing agent;
Soaking the stainless steel plate in a chemical degreasing agent for 20-30min, performing ultrasonic treatment for 3-5min, taking out, cleaning with deionized water, and drying;
② . Acid-base composite treatment: soaking the deoiled stainless steel plate in a sodium hydroxide solution with the mass concentration of 1-3% for 30min, performing ultrasonic treatment for 5min, taking out, cleaning with deionized water, and drying; then soaking the stainless steel plate in sulfuric acid with the mass concentration of 3% for 30min, carrying out ultrasonic treatment for 5min, taking out, cleaning with deionized water, and drying;
wherein, the ultrasonic power of ultrasonic treatment is 1000W, and the frequency is 50kHz;
③ . Phosphating: preparing phosphating solution, wherein the phosphating solution comprises the following raw materials in parts by weight: 40 parts of phosphoric acid, 15 parts of nitric acid, 15 parts of zinc nitrate, 10 parts of citric acid, 3 parts of sodium dodecyl benzene sulfonate, 2 parts of octyl phenol polyoxyethylene ether and 15 parts of water are sequentially placed into a stirrer, and uniformly stirred to obtain phosphating solution;
soaking the stainless steel plate in phosphating solution, carrying out ultrasonic oscillation treatment for 1-2 hours, taking out the stainless steel plate, washing with deionized water, and drying;
Step three: mixing of gases: the method comprises the steps that a seepage promoting agent dripping device is arranged above a heating container, nitrogen is introduced into the heating container, the seepage promoting agent is dripped into the heating container through the seepage promoting agent dripping device, the temperature in the heating container is increased, so that the gaseous seepage promoting agent is mixed with the nitrogen, and the mixing ratio of the gaseous seepage promoting agent to the nitrogen is 1:4, a step of;
Step four: ion nitriding: putting stainless steel into a vacuum ion nitriding furnace, adjusting the vacuum degree of the vacuum ion nitriding furnace to 35Pa, introducing helium gas to perform ion bombardment for 25min at the temperature of 330 ℃, stopping ion bombardment, and introducing mixed gas of a gaseous permeation accelerator and nitrogen, wherein the mixing ratio of the mixed gas of ammonia and hydrogen is 1:1.5, heating the temperature in the nitriding furnace to 530 ℃, regulating the pressure in the vacuum nitriding furnace to 140Mpa, maintaining the treatment time for 5h, stopping introducing the mixed gas of the gaseous catalyst and nitrogen, introducing the mixed gas of ammonia and hydrogen into the vacuum ion nitriding furnace, increasing the pressure in the furnace to 170Mpa, and continuing for 1.5h to complete nitriding;
Step five: oxidation reaction: stopping introducing oxygen into the mixed gas of ammonia and hydrogen, continuing for 1.5h when the temperature in the vacuum nitriding furnace is reduced to 350 ℃, stopping introducing oxygen after an oxide film is formed on the surface of the stainless steel, introducing ammonia, and cooling to room temperature along with the furnace after the temperature is reduced to 220 ℃.
Examples
An ion nitriding composite surface modification treatment method comprises the following steps:
Step one: cutting stainless steel plates: selecting a stainless steel plate, cutting the stainless steel plate by using a laser cutting machine, and polishing the cut part of the stainless steel plate by using a mirror surface polisher;
Step two: stainless steel sheet surface treatment:
① . Deoiling: preparing a chemical degreasing agent, wherein the chemical degreasing agent comprises the following raw materials in parts by weight: 40 parts of sodium hydroxide, 15 parts of sodium phosphate, 15 parts of emulsifying agent, 5 parts of trisodium phosphate, 3 parts of triethanolamine and the balance of water, and sequentially placing 40 parts of sodium hydroxide, 15 parts of sodium phosphate, 15 parts of emulsifying agent, 5 parts of trisodium phosphate, 3 parts of triethanolamine and 22 parts of water into a stirrer, and uniformly stirring to obtain a chemical degreasing agent;
Soaking the stainless steel plate in a chemical degreasing agent for 20-30min, performing ultrasonic treatment for 3-5min, taking out, cleaning with deionized water, and drying;
② . Acid-base composite treatment: soaking the deoiled stainless steel plate in a sodium hydroxide solution with the mass concentration of 1-3% for 30min, performing ultrasonic treatment for 5min, taking out, cleaning with deionized water, and drying; then soaking the stainless steel plate in sulfuric acid with the mass concentration of 3% for 30min, carrying out ultrasonic treatment for 5min, taking out, cleaning with deionized water, and drying;
wherein, the ultrasonic power of ultrasonic treatment is 1000W, and the frequency is 50kHz;
③ . Phosphating: preparing phosphating solution, wherein the phosphating solution comprises the following raw materials in parts by weight: 40 parts of phosphoric acid, 15 parts of nitric acid, 15 parts of zinc nitrate, 10 parts of citric acid, 3 parts of sodium dodecyl benzene sulfonate, 2 parts of octyl phenol polyoxyethylene ether and 15 parts of water are sequentially placed into a stirrer, and uniformly stirred to obtain phosphating solution;
soaking the stainless steel plate in phosphating solution, carrying out ultrasonic oscillation treatment for 1-2 hours, taking out the stainless steel plate, washing with deionized water, and drying;
Step three: mixing of gases: the method comprises the steps that a seepage promoting agent dripping device is arranged above a heating container, nitrogen is introduced into the heating container, the seepage promoting agent is dripped into the heating container through the seepage promoting agent dripping device, the temperature in the heating container is increased, so that the gaseous seepage promoting agent is mixed with the nitrogen, and the mixing ratio of the gaseous seepage promoting agent to the nitrogen is 1:4, a step of;
step four: ion nitriding: putting stainless steel into a vacuum ion nitriding furnace, adjusting the vacuum degree of the vacuum ion nitriding furnace to be 30Pa, introducing helium gas to perform ion bombardment for 20min at the temperature of 350 ℃, stopping ion bombardment, and introducing mixed gas of a gaseous permeation accelerator and nitrogen, wherein the mixing ratio of the mixed gas of ammonia and hydrogen is 1:1.5, heating the temperature in the nitriding furnace to 550 ℃, regulating the pressure in the vacuum nitriding furnace to 150Mpa, maintaining the treatment time for 4h, stopping introducing the mixed gas of the gaseous catalyst and nitrogen, introducing the mixed gas of ammonia and hydrogen into the vacuum ion nitriding furnace, increasing the pressure in the furnace to 200Mpa, and continuing for 1h to finish nitriding;
Step five: oxidation reaction: stopping introducing oxygen into the mixed gas of ammonia and hydrogen, continuously cooling for 1h when the temperature in the vacuum nitriding furnace is reduced to 400 ℃, stopping introducing oxygen after an oxide film is formed on the surface of the stainless steel, introducing ammonia, and cooling to room temperature along with the furnace after the temperature is reduced to 250 ℃.
By using the technical scheme of the invention or under the inspired by the technical scheme of the invention, a similar technical scheme is designed by a person skilled in the art, so that the technical effects are achieved, and the technical effects fall into the protection scope of the invention.
Claims (6)
1. An ion nitriding composite surface modification treatment method is characterized in that: the method comprises the following steps:
Step one: cutting stainless steel plates: selecting a stainless steel plate, cutting the stainless steel plate by using a laser cutting machine, and polishing the cut part of the stainless steel plate by using a mirror surface polisher;
Step two: stainless steel sheet surface treatment:
① . Deoiling: soaking the stainless steel plate in a chemical degreasing agent for 20-30min, performing ultrasonic treatment for 3-5min, taking out, cleaning with deionized water, and drying;
② . Acid-base composite treatment: soaking the deoiled stainless steel plate in a sodium hydroxide solution with the mass concentration of 1-3% for 20-30min, performing ultrasonic treatment for 3-5min, taking out, cleaning with deionized water, and drying; soaking the stainless steel plate in 1-3% sulfuric acid for 20-30min, performing ultrasonic treatment for 3-5min, taking out, cleaning with deionized water, and drying;
③ . Phosphating: soaking the stainless steel plate in phosphating solution, carrying out ultrasonic oscillation treatment for 1-2 hours, taking out the stainless steel plate, washing with deionized water, and drying;
Step three: mixing of gases: a seepage catalyst dripping device is arranged above the heating container, nitrogen is introduced into the heating container, the seepage catalyst is dripped into the heating container through the seepage catalyst dripping device, and the temperature in the heating container is increased, so that the gaseous seepage catalyst is mixed with the nitrogen;
Step four: ion nitriding: placing stainless steel into a vacuum ion nitriding furnace, regulating the vacuum degree of the vacuum ion nitriding furnace to be 30-40Pa, introducing helium gas to perform ion bombardment for 20-30min at the temperature of 300-350 ℃, stopping ion bombardment, introducing mixed gas of a gaseous catalyst and nitrogen, heating the temperature in the nitriding furnace to 500-550 ℃, regulating the pressure in the vacuum nitriding furnace to be 130-150Mpa, maintaining the treatment time for 4-6h, stopping introducing the mixed gas of the gaseous catalyst and nitrogen, introducing mixed gas of ammonia and hydrogen into the vacuum ion nitriding furnace, increasing the pressure in the furnace to 150-200Mpa, and continuing for 1-2h, so that nitriding is completed;
Step five: oxidation reaction: stopping introducing oxygen into the mixed gas of ammonia and hydrogen, continuously cooling to room temperature along with the furnace after the temperature in the vacuum nitriding furnace is reduced to 300-400 ℃ for 1-2h and stopping introducing oxygen after an oxide film is formed on the surface of stainless steel, and introducing ammonia after the temperature is reduced to 200-250 ℃.
2. The ion nitriding composite surface modification treatment method according to claim 1, characterized by comprising the following steps: the chemical degreasing agent in the second step comprises the following raw materials in parts by weight: 40-50 parts of sodium hydroxide, 10-20 parts of sodium phosphate, 10-20 parts of emulsifying agent, 1-5 parts of trisodium phosphate, 1-3 parts of triethanolamine and the balance of water.
3. The ion nitriding composite surface modification treatment method according to claim 1, characterized by comprising the following steps: and in the second step, the ultrasonic power of ultrasonic treatment is 1000W, and the frequency is 50kHz.
4. The ion nitriding composite surface modification treatment method according to claim 1, characterized by comprising the following steps: the phosphating solution in the second step comprises the following raw materials in parts by weight: 20-40 parts of phosphoric acid, 10-20 parts of nitric acid, 10-20 parts of zinc nitrate, 5-10 parts of citric acid, 1-3 parts of sodium dodecyl benzene sulfonate, 1-2 parts of octyl phenol polyoxyethylene ether and the balance of water.
5. The ion nitriding composite surface modification treatment method according to claim 1, characterized by comprising the following steps: in the third step, the mixing ratio of the gaseous catalyst to the nitrogen is 1:4.
6. The ion nitriding composite surface modification treatment method according to claim 1, characterized by comprising the following steps: in the fourth step, the mixing ratio of the mixed gas of ammonia and hydrogen is 1:1.5.
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