CN117127142A - Antibacterial hard stainless steel cutter and processing technology thereof - Google Patents
Antibacterial hard stainless steel cutter and processing technology thereof Download PDFInfo
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- CN117127142A CN117127142A CN202311292832.0A CN202311292832A CN117127142A CN 117127142 A CN117127142 A CN 117127142A CN 202311292832 A CN202311292832 A CN 202311292832A CN 117127142 A CN117127142 A CN 117127142A
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 193
- 239000010935 stainless steel Substances 0.000 title claims abstract description 193
- 238000012545 processing Methods 0.000 title claims abstract description 55
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 42
- 238000005516 engineering process Methods 0.000 title claims abstract description 22
- 238000005121 nitriding Methods 0.000 claims abstract description 107
- 239000011159 matrix material Substances 0.000 claims abstract description 76
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 67
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 29
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000008367 deionised water Substances 0.000 claims abstract description 20
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 20
- 238000004544 sputter deposition Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 61
- 150000002910 rare earth metals Chemical class 0.000 claims description 60
- 229910003460 diamond Inorganic materials 0.000 claims description 55
- 239000010432 diamond Substances 0.000 claims description 55
- 239000002131 composite material Substances 0.000 claims description 49
- 239000013077 target material Substances 0.000 claims description 40
- 238000000151 deposition Methods 0.000 claims description 37
- 230000008021 deposition Effects 0.000 claims description 37
- 230000007704 transition Effects 0.000 claims description 37
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical group N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 25
- 229910001149 41xx steel Inorganic materials 0.000 claims description 21
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 20
- YCKOAAUKSGOOJH-UHFFFAOYSA-N copper silver Chemical compound [Cu].[Ag].[Ag] YCKOAAUKSGOOJH-UHFFFAOYSA-N 0.000 claims description 20
- 238000009792 diffusion process Methods 0.000 claims description 19
- 238000001764 infiltration Methods 0.000 claims description 19
- 230000008595 infiltration Effects 0.000 claims description 19
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 18
- 238000004140 cleaning Methods 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 18
- 229910052684 Cerium Inorganic materials 0.000 claims description 10
- 230000003197 catalytic effect Effects 0.000 claims description 10
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052746 lanthanum Inorganic materials 0.000 claims description 10
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 229910052786 argon Inorganic materials 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 9
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 8
- 239000000463 material Substances 0.000 abstract description 4
- 238000005238 degreasing Methods 0.000 abstract description 2
- 238000004506 ultrasonic cleaning Methods 0.000 abstract description 2
- 238000000861 blow drying Methods 0.000 abstract 1
- 238000010147 laser engraving Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000009630 liquid culture Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001954 sterilising 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
-
- 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
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating
- C23C14/025—Metallic sublayers
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
- C23C14/165—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon by cathodic sputtering
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
- C23C14/352—Sputtering by application of a magnetic field, e.g. magnetron sputtering using more than one target
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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
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- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
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Abstract
The application relates to the technical field of stainless steel cutters, in particular to an antibacterial hard stainless steel cutter and a processing technology thereof. According to the scheme, SUS stainless steel is used as a cutter material, a stainless steel cutter matrix is formed by processing, the stainless steel cutter matrix is firstly placed in acetone for ultrasonic cleaning and degreasing, then is cleaned by absolute ethyl alcohol and deionized water, and a hard layer is deposited on the surface of the stainless steel cutter matrix through ion nitriding and sputtering after nitrogen blow-drying, so that the stainless steel cutter with high hardness and excellent wear resistance is prepared, the stainless steel cutter is guaranteed to be excellent in antibacterial performance, and the practicability is higher. The application discloses an antibacterial hard stainless steel tool and a processing technology thereof, the whole processing steps are simple and convenient, and the prepared stainless steel tool not only has higher surface hardness, but also has excellent wear resistance, better antibacterial performance and higher practicability.
Description
Technical Field
The application relates to the technical field of stainless steel cutters, in particular to an antibacterial hard stainless steel cutter and a processing technology thereof.
Background
The austenitic stainless steel is widely applied to the fields of kitchen and toilet appliances, food packaging, medical appliances and the like due to the excellent performance, and SUS304 stainless steel is a stainless steel tool material commonly used at present, has higher strength and surface hardness, but has poorer antibacterial performance, and has the risk of bacterial pollution in actual use, so that the development of the antibacterial performance of the stainless steel tool is a popular item for us.
Meanwhile, the surface hardness and wear resistance of stainless steel are required to be high in practical use, and based on the situation, the application discloses an antibacterial hard stainless steel tool and a processing technology thereof, so that the technical problem is solved.
Disclosure of Invention
The application aims to provide an antibacterial hard stainless steel tool and a processing technology thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the application provides the following technical scheme:
a processing technology of an antibacterial hard stainless steel tool comprises the following steps:
(1) Placing the stainless steel tool matrix in acetone, ultrasonically cleaning for 20-30 min, washing with deionized water, then placing in absolute ethyl alcohol, ultrasonically cleaning for 20-30 min, washing with deionized water, and drying with nitrogen;
(2) Ion nitriding the surface of the stainless steel tool matrix, and performing rare earth assisted permeation to form a stainless steel tool matrix containing a nitriding layer;
then taking copper-silver alloy as a source electrode target material, taking a uniformly perforated stainless steel sheet as an active screen, carrying out active screen nitriding on the surface of the nitriding layer of the stainless steel tool matrix, and carrying out rare earth auxiliary catalytic diffusion to form the stainless steel tool matrix with the composite diffusion layer;
(3) Taking stainless steel tool matrix containing composite infiltration layer, vacuumizing to 3.0X10 -3 Pa, argon is introduced to adjust the deposition pressure to be 0.8-1.0 Pa, the deposition temperature is 350-400 ℃, the bias voltage is 150V, nitrogen is introduced, pure Cr is used as a target material, and a transition layer is subjected to magnetron sputtering on the surface of the composite infiltration layer; then AlCrTiSi target material and CrMo target material are matched, and a hard layer is sputtered on the surface of the transition layer;
(4) And (3) taking a stainless steel cutter matrix containing a hard coating, and carrying out laser processing on the surface to form a pattern, wherein the laser processing pattern is of a plurality of diamond structures, so as to obtain the finished stainless steel cutter.
In the more optimized scheme, in the step (1), the stainless steel tool matrix is SUS304 stainless steel; in the step (2), the stainless steel sheet is SUS304 stainless steel, the thickness of the stainless steel sheet is 0.4-0.5 mm, and the aperture is 5-6 mm.
In the more optimized scheme, in the step (2), specific process parameters of the nitriding layer are as follows: nitriding temperature is 500-520 ℃, nitriding gas source is ammonia gas, furnace pressure is 180-200 Pa, ammonia gas flow is 180-200 mL/min, and ion nitriding heat preservation time is 5-6 h.
In the more optimized scheme, in the step (2), the specific technological parameters of the composite seepage layer are as follows: regulating the flow rate of ammonia gas to be 100-120 mL/min, introducing hydrogen gas, and controlling the flow rate ratio of the nitrogen gas to the hydrogen gas to be 1:3, the pressure in the furnace is 300-350 Pa, the nitriding temperature is 370-380 ℃, the pulse voltage is 650V, the current is 20A, the nitriding time is 5-6 h, and the working bias voltage is 250-300V.
In the more optimized scheme, in the step (2), the distance between the rare earth and the stainless steel tool matrix is 10-30 mm, the rare earth is a mixture of rare earth cerium and rare earth lanthanum, and the mass ratio is (2-3): 1, a step of; the copper-silver alloy is Cu-3Ag or Cu-4Ag.
In the step (3), the flow rate of nitrogen is 50sccm, and the sputtering deposition time of the transition layer is 10-15 min; the power of AlCrTiSi target is 2.0kw, the power of CrMo target is 0.5-0.6 kw, and the sputtering deposition time of hard layer is 3-4 h.
In the more optimized scheme, in the step (4), the centers of a plurality of longitudinally arranged diamond structures are positioned on a straight line, the centers of a plurality of transversely arranged diamond structures are positioned on a straight line, the laser engraving depth of the upper half part of each diamond structure is equal to the laser engraving depth of the lower half part of each diamond structure until the composite seepage layer is exposed, and the laser engraving depth of the lower half part of each diamond structure is equal to the exposure transition layer; the side length of the diamond structure is 200-300 mu m, and the distance between two adjacent diamond structures is 200-300 mu m.
According to the more optimized scheme, the stainless steel tool is obtained by processing the antibacterial hard stainless steel tool according to the processing technology of any one of the above.
In the step (4), the laser processing adopts femtosecond laser, the power is 3-5W, the scanning frequency is 50KHz, and the scanning speed is 3-4 mm/s.
Compared with the prior art, the application has the following beneficial effects:
the application discloses an antibacterial hard stainless steel tool and a processing technology thereof, wherein SUS stainless steel is used as a tool material in the scheme, a stainless steel tool substrate is processed and formed, the stainless steel tool substrate is firstly placed in acetone for ultrasonic cleaning and degreasing, then is cleaned by absolute ethyl alcohol and deionized water, and a hard layer is ion nitrided and sputtered and deposited on the surface of the stainless steel tool substrate after nitrogen is dried, so that the stainless steel tool with high hardness and excellent wear resistance is prepared, the excellent antibacterial performance of the stainless steel tool is ensured, and the practicability is higher.
In the scheme, the surface of the stainless steel tool is firstly subjected to ion nitriding, rare earth is adopted to assist in catalytic permeation, the rare earth is a mixture of rare earth cerium and rare earth lanthanum, and the mass ratio is (2-3): 1, nitriding is promoted by rare earth, and a nitriding layer is formed on the surface of a stainless steel cutter matrix, so that the hardness and wear resistance of a product are improved; however, the method is different from the conventional nitriding process, the conventional rare earth ion nitriding is divided into two-stage processes, the nitriding layer is formed by ion nitriding for 5-6 hours under the catalysis of rare earth in the first stage, then the active screen ion nitriding is adopted in the second stage, the active screen adopts an SUS304 stainless steel sheet with uniform holes, the source target is copper-silver alloy, and therefore an Ag-Cu-N composite diffusion layer is formed on the surface of the nitriding layer, and the step can ensure that the stainless steel tool has excellent antibacterial performance.
Based on the scheme, the application uses pure Cr as a target material, and a transition layer is sputtered on the surface of the composite seepage layer in a magnetron way; then AlCrTiSi target material and CrMo target material are matched, and a hard layer is sputtered on the surface of the transition layer, so that the wear resistance and the surface hardness of the product are improved; meanwhile, in order to further improve the surface wear resistance of the cutter, the scheme also forms patterns on the surface of the hard layer by laser processing, the scheme adopts a plurality of diamond-shaped structure pits, a plurality of diamond-shaped structures are transversely arranged, the center of each row of diamond-shaped structures is positioned on a straight line, if the diamond-shaped structures are longitudinally arranged, the center of each column of diamond-shaped structures is positioned on a straight line, the side length of each diamond-shaped structure is 200 mu m, and the interval between two adjacent diamond-shaped structures is 300 mu m; the design of the diamond structure can effectively improve the surface wear resistance of the stainless steel cutter.
Meanwhile, the application also defines the laser engraving depth of the upper half part of each diamond structure until the composite seepage layer is exposed, and the laser engraving depth of the lower half part of each diamond structure until the transition layer is exposed, which is because: the copper-silver alloy is introduced into the composite infiltration layer to ensure the antibacterial performance, but the surface hardness and the wear resistance of the stainless steel cutter are reduced by introducing the infiltration layer, and in order to improve the performance, a hard layer is formed by sputtering deposition, but the existence of the hard layer also affects the antibacterial performance, so that the processing thickness of the diamond-shaped structure is limited during laser processing, and the upper half part of the diamond-shaped structure is deeply engraved until the composite infiltration layer is exposed, namely the thickness is the sum of the transition layer and the hard layer; the lower half part is carved until the transition layer is exposed, namely the thickness is the thickness of the hard layer, so that the wear resistance of the product can be improved, and the antibacterial property is ensured.
In order to simplify the processing technology, the application can also consider that the thickness of two adjacent diamond structures is limited instead of limiting the same diamond structure in actual processing, and the diamond structure A exposing the composite seepage layer and the diamond structure B exposing the transition layer are designed; each row and each column are arranged in ase:Sub>A staggered way through A-B-A-B, and the scheme can ensure the antibacterial performance of the product.
The application discloses an antibacterial hard stainless steel tool and a processing technology thereof, the whole processing steps are simple and convenient, and the prepared stainless steel tool not only has higher surface hardness, but also has excellent wear resistance, better antibacterial performance and higher practicability.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In this embodiment, al in the alcrtisii target: cr: ti: the atomic ratio of Si is 50:20:20:10; cr in the CrMo target material: mo atomic ratio 80:20.
example 1: a processing technology of an antibacterial hard stainless steel tool comprises the following steps:
(1) Placing the stainless steel tool matrix in acetone, ultrasonically cleaning for 20min, washing with deionized water, then placing in absolute ethyl alcohol, ultrasonically cleaning for 20min, washing with deionized water, and drying with nitrogen; the stainless steel tool base body is SUS304 stainless steel.
(2) Ion nitriding the surface of the stainless steel tool matrix, and performing rare earth assisted permeation to form a stainless steel tool matrix containing a nitriding layer; the specific technological parameters of the nitriding layer are as follows: nitriding temperature is 520 ℃, nitriding gas source is ammonia gas, furnace pressure is 180Pa, ammonia gas flow is 180mL/min, and ion nitriding heat preservation time is 5h.
Then taking copper-silver alloy as a source electrode target material, taking a copper-silver alloy as Cu-3Ag, taking a stainless steel sheet with uniform holes as an active screen, carrying out active screen nitriding on the surface of a nitriding layer of a stainless steel tool matrix, and carrying out rare earth auxiliary catalytic diffusion to form the stainless steel tool matrix with a composite diffusion layer; the specific technological parameters of the composite seepage layer are as follows: adjusting the flow rate of ammonia gas to 120mL/min, introducing hydrogen gas, and controlling the flow rate ratio of the nitrogen gas to the hydrogen gas to be 1:3, the pressure in the furnace is 300Pa, the nitriding temperature is 380 ℃, the pulse voltage is 650V, the current is 20A, the nitriding time is 5h, and the working bias voltage is 250V. The stainless steel sheet is SUS304 stainless steel, the thickness of the stainless steel sheet is 0.5mm, and the aperture is 5mm.
In the nitriding step, the distance between the rare earth and the stainless steel cutter matrix is 20mm, the rare earth is a mixture of rare earth cerium and rare earth lanthanum, and the mass ratio is 3:1.
(3) Taking stainless steel tool matrix containing composite infiltration layer, vacuumizing to 3.0X10 -3 Pa, argon is introduced to adjust the deposition pressure to be 0.8Pa, the deposition temperature is 400 ℃, the bias voltage is 150V, nitrogen is introduced, the nitrogen flow is 50sccm, pure Cr is used as a target material, a transition layer is subjected to magnetron sputtering on the surface of the composite infiltration layer, and the sputtering deposition time of the transition layer is 15min; then AlCrTiSi target material and CrMo target material are matched, and a hard layer is sputtered on the surface of the transition layer; alCrTiSi targetThe material power is 2.0kw, the target power of CrMo is 0.5kw, and the sputtering deposition time of the hard layer is 3h.
(4) Taking a stainless steel tool matrix containing a hard coating, carrying out laser processing on the surface to form a pattern, wherein the laser processing pattern is a plurality of diamond structures, the centers of the plurality of longitudinal diamond structures are positioned on a straight line, the centers of the transverse longitudinal diamond structures are positioned on a straight line, and the laser engraving depth of the upper half part of each diamond structure is equal to the laser engraving depth of the lower half part of each diamond structure until the composite seepage layer is exposed; the side length of the diamond-shaped structure is 200 mu m, and the distance between two adjacent diamond-shaped structures is 300 mu m. Obtaining the finished stainless steel cutter.
Example 2: a processing technology of an antibacterial hard stainless steel tool comprises the following steps:
(1) Placing the stainless steel tool matrix in acetone, ultrasonically cleaning for 25min, washing with deionized water, then placing in absolute ethyl alcohol, ultrasonically cleaning for 25min, washing with deionized water, and drying with nitrogen; the stainless steel tool base body is SUS304 stainless steel.
(2) Ion nitriding the surface of the stainless steel tool matrix, and performing rare earth assisted permeation to form a stainless steel tool matrix containing a nitriding layer; the specific technological parameters of the nitriding layer are as follows: nitriding temperature is 520 ℃, nitriding gas source is ammonia gas, furnace pressure is 180Pa, ammonia gas flow is 180mL/min, and ion nitriding heat preservation time is 5.5h.
Then taking copper-silver alloy as a source electrode target material, taking a copper-silver alloy as Cu-4Ag, taking a stainless steel sheet with uniform holes as an active screen, carrying out active screen nitriding on the surface of a nitriding layer of a stainless steel tool matrix, and carrying out rare earth auxiliary catalytic diffusion to form the stainless steel tool matrix with a composite diffusion layer; the specific technological parameters of the composite seepage layer are as follows: adjusting the flow rate of ammonia gas to 120mL/min, introducing hydrogen gas, and controlling the flow rate ratio of the nitrogen gas to the hydrogen gas to be 1:3, the pressure in the furnace is 300Pa, the nitriding temperature is 380 ℃, the pulse voltage is 650V, the current is 20A, the nitriding time is 5.5h, and the working bias voltage is 250V. The stainless steel sheet is SUS304 stainless steel, the thickness of the stainless steel sheet is 0.5mm, and the aperture is 5mm.
In the nitriding step, the distance between the rare earth and the stainless steel cutter matrix is 20mm, the rare earth is a mixture of rare earth cerium and rare earth lanthanum, and the mass ratio is 3:1.
(3) Taking stainless steel tool matrix containing composite infiltration layer, vacuumizing to 3.0X10 -3 Pa, argon is introduced to adjust the deposition pressure to be 0.8Pa, the deposition temperature is 400 ℃, the bias voltage is 150V, nitrogen is introduced, the nitrogen flow is 50sccm, pure Cr is used as a target material, a transition layer is subjected to magnetron sputtering on the surface of the composite infiltration layer, and the sputtering deposition time of the transition layer is 15min; then AlCrTiSi target material and CrMo target material are matched, and a hard layer is sputtered on the surface of the transition layer; the power of AlCrTiSi target is 2.0kw, the power of CrMo target is 0.5kw, and the sputtering deposition time of the hard layer is 3.5h.
(4) Taking a stainless steel tool matrix containing a hard coating, carrying out laser processing on the surface to form a pattern, wherein the laser processing pattern is a plurality of diamond structures, the centers of the plurality of longitudinal diamond structures are positioned on a straight line, the centers of the transverse longitudinal diamond structures are positioned on a straight line, and the laser engraving depth of the upper half part of each diamond structure is equal to the laser engraving depth of the lower half part of each diamond structure until the composite seepage layer is exposed; the side length of the diamond-shaped structure is 200 mu m, and the distance between two adjacent diamond-shaped structures is 300 mu m. Obtaining the finished stainless steel cutter. The laser processing adopts femtosecond laser, the power is 5W, the scanning frequency is 50KHz, and the scanning speed is 4mm/s.
Example 3: a processing technology of an antibacterial hard stainless steel tool comprises the following steps:
(1) Placing the stainless steel tool matrix in acetone, ultrasonically cleaning for 30min, washing with deionized water, then placing in absolute ethyl alcohol, ultrasonically cleaning for 30min, washing with deionized water, and drying with nitrogen; the stainless steel tool base body is SUS304 stainless steel.
(2) Ion nitriding the surface of the stainless steel tool matrix, and performing rare earth assisted permeation to form a stainless steel tool matrix containing a nitriding layer; the specific technological parameters of the nitriding layer are as follows: nitriding temperature is 520 ℃, nitriding gas source is ammonia gas, furnace pressure is 180Pa, ammonia gas flow is 180mL/min, and ion nitriding heat preservation time is 5.5h.
Then taking copper-silver alloy as a source electrode target material, taking a copper-silver alloy as Cu-4Ag, taking a stainless steel sheet with uniform holes as an active screen, carrying out active screen nitriding on the surface of a nitriding layer of a stainless steel tool matrix, and carrying out rare earth auxiliary catalytic diffusion to form the stainless steel tool matrix with a composite diffusion layer; the specific technological parameters of the composite seepage layer are as follows: adjusting the flow rate of ammonia gas to 120mL/min, introducing hydrogen gas, and controlling the flow rate ratio of the nitrogen gas to the hydrogen gas to be 1:3, the pressure in the furnace is 300Pa, the nitriding temperature is 380 ℃, the pulse voltage is 650V, the current is 20A, the nitriding time is 6h, and the working bias voltage is 250V. The stainless steel sheet is SUS304 stainless steel, the thickness of the stainless steel sheet is 0.5mm, and the aperture is 5mm.
In the nitriding step, the distance between the rare earth and the stainless steel cutter matrix is 20mm, the rare earth is a mixture of rare earth cerium and rare earth lanthanum, and the mass ratio is 3:1.
(3) Taking stainless steel tool matrix containing composite infiltration layer, vacuumizing to 3.0X10 -3 Pa, argon is introduced to adjust the deposition pressure to be 0.8Pa, the deposition temperature is 400 ℃, the bias voltage is 150V, nitrogen is introduced, the nitrogen flow is 50sccm, pure Cr is used as a target material, a transition layer is subjected to magnetron sputtering on the surface of the composite infiltration layer, and the sputtering deposition time of the transition layer is 15min; then AlCrTiSi target material and CrMo target material are matched, and a hard layer is sputtered on the surface of the transition layer; the power of AlCrTiSi target is 2.0kw, the power of CrMo target is 0.6kw, and the sputtering deposition time of the hard layer is 4h.
(4) Taking a stainless steel tool matrix containing a hard coating, carrying out laser processing on the surface to form a pattern, wherein the laser processing pattern is a plurality of diamond structures, the centers of the plurality of longitudinal diamond structures are positioned on a straight line, the centers of the transverse longitudinal diamond structures are positioned on a straight line, and the laser engraving depth of the upper half part of each diamond structure is equal to the laser engraving depth of the lower half part of each diamond structure until the composite seepage layer is exposed; the side length of the diamond-shaped structure is 200 mu m, and the distance between two adjacent diamond-shaped structures is 300 mu m. Obtaining the finished stainless steel cutter. The laser processing adopts femtosecond laser, the power is 5W, the scanning frequency is 50KHz, and the scanning speed is 4mm/s.
Example 4: a processing technology of an antibacterial hard stainless steel tool comprises the following steps:
(1) Placing the stainless steel tool matrix in acetone, ultrasonically cleaning for 30min, washing with deionized water, then placing in absolute ethyl alcohol, ultrasonically cleaning for 30min, washing with deionized water, and drying with nitrogen; the stainless steel tool base body is SUS304 stainless steel.
(2) Ion nitriding the surface of the stainless steel tool matrix, and performing rare earth assisted permeation to form a stainless steel tool matrix containing a nitriding layer; the specific technological parameters of the nitriding layer are as follows: nitriding temperature is 520 ℃, nitriding gas source is ammonia gas, furnace pressure is 180Pa, ammonia gas flow is 180mL/min, and ion nitriding heat preservation time is 5.5h.
Then taking copper-silver alloy as a source electrode target material, taking a copper-silver alloy as Cu-4Ag, taking a stainless steel sheet with uniform holes as an active screen, carrying out active screen nitriding on the surface of a nitriding layer of a stainless steel tool matrix, and carrying out rare earth auxiliary catalytic diffusion to form the stainless steel tool matrix with a composite diffusion layer; the specific technological parameters of the composite seepage layer are as follows: adjusting the flow rate of ammonia gas to 120mL/min, introducing hydrogen gas, and controlling the flow rate ratio of the nitrogen gas to the hydrogen gas to be 1:3, the pressure in the furnace is 300Pa, the nitriding temperature is 380 ℃, the pulse voltage is 650V, the current is 20A, the nitriding time is 6h, and the working bias voltage is 250V. The stainless steel sheet is SUS304 stainless steel, the thickness of the stainless steel sheet is 0.5mm, and the aperture is 5mm.
In the nitriding step, the distance between the rare earth and the stainless steel cutter matrix is 20mm, the rare earth is a mixture of rare earth cerium and rare earth lanthanum, and the mass ratio is 3:1.
(3) Taking stainless steel tool matrix containing composite infiltration layer, vacuumizing to 3.0X10 -3 Pa, argon is introduced to adjust the deposition pressure to be 0.8Pa, the deposition temperature is 400 ℃, the bias voltage is 150V, nitrogen is introduced, the nitrogen flow is 50sccm, pure Cr is used as a target material, a transition layer is subjected to magnetron sputtering on the surface of the composite infiltration layer, and the sputtering deposition time of the transition layer is 15min; then AlCrTiSi target material and CrMo target material are matched, and a hard layer is sputtered on the surface of the transition layer; the power of AlCrTiSi target is 2.0kw, the power of CrMo target is 0.6kw, and the sputtering deposition time of the hard layer is 4h.
(4) The method comprises the steps of taking a stainless steel tool matrix containing a hard coating, carrying out laser processing on the surface to form a pattern, wherein the laser processing pattern is a plurality of diamond structures, the centers of the longitudinal diamond structures are positioned on a straight line, the centers of the transverse longitudinal diamond structures are positioned on a straight line, the side length of each diamond structure is 200 mu m, and the distance between every two adjacent diamond structures is 300 mu m. Obtaining the finished stainless steel cutter. The laser processing adopts femtosecond laser, the power is 5W, the scanning frequency is 50KHz, and the scanning speed is 4mm/s. Processing a diamond structure A exposing the composite seepage layer and a diamond structure B exposing the transition layer during laser processing; each row and each column is staggered by ase:Sub>A-B-ase:Sub>A-B.
Comparative example 1: in comparative example 1, which was not laser patterning, example 3 was used as a control group, and the remaining procedure parameters were identical to those of example 3.
A processing technology of an antibacterial hard stainless steel tool comprises the following steps:
(1) Placing the stainless steel tool matrix in acetone, ultrasonically cleaning for 30min, washing with deionized water, then placing in absolute ethyl alcohol, ultrasonically cleaning for 30min, washing with deionized water, and drying with nitrogen; the stainless steel tool base body is SUS304 stainless steel.
(2) Ion nitriding the surface of the stainless steel tool matrix, and performing rare earth assisted permeation to form a stainless steel tool matrix containing a nitriding layer; the specific technological parameters of the nitriding layer are as follows: nitriding temperature is 520 ℃, nitriding gas source is ammonia gas, furnace pressure is 180Pa, ammonia gas flow is 180mL/min, and ion nitriding heat preservation time is 5.5h.
Then taking copper-silver alloy as a source electrode target material, taking a copper-silver alloy as Cu-4Ag, taking a stainless steel sheet with uniform holes as an active screen, carrying out active screen nitriding on the surface of a nitriding layer of a stainless steel tool matrix, and carrying out rare earth auxiliary catalytic diffusion to form the stainless steel tool matrix with a composite diffusion layer; the specific technological parameters of the composite seepage layer are as follows: adjusting the flow rate of ammonia gas to 120mL/min, introducing hydrogen gas, and controlling the flow rate ratio of the nitrogen gas to the hydrogen gas to be 1:3, the pressure in the furnace is 300Pa, the nitriding temperature is 380 ℃, the pulse voltage is 650V, the current is 20A, the nitriding time is 6h, and the working bias voltage is 250V. The stainless steel sheet is SUS304 stainless steel, the thickness of the stainless steel sheet is 0.5mm, and the aperture is 5mm.
In the nitriding step, the distance between the rare earth and the stainless steel cutter matrix is 20mm, the rare earth is a mixture of rare earth cerium and rare earth lanthanum, and the mass ratio is 3:1.
(3) Taking stainless steel tool matrix containing composite infiltration layer, vacuumizing to 3.0X10 -3 Pa, argon is introduced to adjust the deposition pressure to be 0.8Pa, the deposition temperature is 400 ℃, and the bias is adoptedIntroducing nitrogen at the pressure of 150V and the flow rate of the nitrogen of 50sccm, and performing magnetron sputtering on a transition layer on the surface of the composite permeation layer by taking pure Cr as a target material, wherein the sputtering deposition time of the transition layer is 15min; then AlCrTiSi target material and CrMo target material are matched, and a hard layer is sputtered on the surface of the transition layer; obtaining the finished stainless steel cutter. The power of AlCrTiSi target is 2.0kw, the power of CrMo target is 0.6kw, and the sputtering deposition time of the hard layer is 4h.
Comparative example 2: in comparative example 2, the depth of the laser pattern was not limited by using example 3 as a control group, and the remaining procedure parameters were the same as those of example 3.
A processing technology of an antibacterial hard stainless steel tool comprises the following steps:
(1) Placing the stainless steel tool matrix in acetone, ultrasonically cleaning for 30min, washing with deionized water, then placing in absolute ethyl alcohol, ultrasonically cleaning for 30min, washing with deionized water, and drying with nitrogen; the stainless steel tool base body is SUS304 stainless steel.
(2) Ion nitriding the surface of the stainless steel tool matrix, and performing rare earth assisted permeation to form a stainless steel tool matrix containing a nitriding layer; the specific technological parameters of the nitriding layer are as follows: nitriding temperature is 520 ℃, nitriding gas source is ammonia gas, furnace pressure is 180Pa, ammonia gas flow is 180mL/min, and ion nitriding heat preservation time is 5.5h.
Then taking copper-silver alloy as a source electrode target material, taking a copper-silver alloy as Cu-4Ag, taking a stainless steel sheet with uniform holes as an active screen, carrying out active screen nitriding on the surface of a nitriding layer of a stainless steel tool matrix, and carrying out rare earth auxiliary catalytic diffusion to form the stainless steel tool matrix with a composite diffusion layer; the specific technological parameters of the composite seepage layer are as follows: adjusting the flow rate of ammonia gas to 120mL/min, introducing hydrogen gas, and controlling the flow rate ratio of the nitrogen gas to the hydrogen gas to be 1:3, the pressure in the furnace is 300Pa, the nitriding temperature is 380 ℃, the pulse voltage is 650V, the current is 20A, the nitriding time is 6h, and the working bias voltage is 250V. The stainless steel sheet is SUS304 stainless steel, the thickness of the stainless steel sheet is 0.5mm, and the aperture is 5mm.
In the nitriding step, the distance between the rare earth and the stainless steel cutter matrix is 20mm, the rare earth is a mixture of rare earth cerium and rare earth lanthanum, and the mass ratio is 3:1.
(3) Taking the non-porous material containing the composite seepage layerThe stainless steel tool matrix is vacuumized to 3.0 multiplied by 10 -3 Pa, argon is introduced to adjust the deposition pressure to be 0.8Pa, the deposition temperature is 400 ℃, the bias voltage is 150V, nitrogen is introduced, the nitrogen flow is 50sccm, pure Cr is used as a target material, a transition layer is subjected to magnetron sputtering on the surface of the composite infiltration layer, and the sputtering deposition time of the transition layer is 15min; then AlCrTiSi target material and CrMo target material are matched, and a hard layer is sputtered on the surface of the transition layer; the power of AlCrTiSi target is 2.0kw, the power of CrMo target is 0.6kw, and the sputtering deposition time of the hard layer is 4h.
(4) The method comprises the steps of taking a stainless steel tool matrix containing a hard coating, carrying out laser processing on the surface to form a pattern, wherein the laser processing pattern is a plurality of diamond structures, the centers of the longitudinal diamond structures are positioned on a straight line, the centers of the transverse longitudinal diamond structures are positioned on a straight line, the side length of each diamond structure is 200 mu m, and the distance between every two adjacent diamond structures is 300 mu m. Obtaining the finished stainless steel cutter. The laser processing adopts femtosecond laser, the power is 5W, the scanning frequency is 50KHz, and the scanning speed is 4mm/s. Each diamond structure was laser engraved to a depth exposing the transition layer.
Comparative example 3: with example 3 as a control group, the CrMo target power was defined to be 0.3kw in comparative example 3, and the remaining procedure parameters were identical to those of example 3.
A processing technology of an antibacterial hard stainless steel tool comprises the following steps:
(1) Placing the stainless steel tool matrix in acetone, ultrasonically cleaning for 30min, washing with deionized water, then placing in absolute ethyl alcohol, ultrasonically cleaning for 30min, washing with deionized water, and drying with nitrogen; the stainless steel tool base body is SUS304 stainless steel.
(2) Ion nitriding the surface of the stainless steel tool matrix, and performing rare earth assisted permeation to form a stainless steel tool matrix containing a nitriding layer; the specific technological parameters of the nitriding layer are as follows: nitriding temperature is 520 ℃, nitriding gas source is ammonia gas, furnace pressure is 180Pa, ammonia gas flow is 180mL/min, and ion nitriding heat preservation time is 5.5h.
Then taking copper-silver alloy as a source electrode target material, taking a copper-silver alloy as Cu-4Ag, taking a stainless steel sheet with uniform holes as an active screen, carrying out active screen nitriding on the surface of a nitriding layer of a stainless steel tool matrix, and carrying out rare earth auxiliary catalytic diffusion to form the stainless steel tool matrix with a composite diffusion layer; the specific technological parameters of the composite seepage layer are as follows: adjusting the flow rate of ammonia gas to 120mL/min, introducing hydrogen gas, and controlling the flow rate ratio of the nitrogen gas to the hydrogen gas to be 1:3, the pressure in the furnace is 300Pa, the nitriding temperature is 380 ℃, the pulse voltage is 650V, the current is 20A, the nitriding time is 6h, and the working bias voltage is 250V. The stainless steel sheet is SUS304 stainless steel, the thickness of the stainless steel sheet is 0.5mm, and the aperture is 5mm.
In the nitriding step, the distance between the rare earth and the stainless steel cutter matrix is 20mm, the rare earth is a mixture of rare earth cerium and rare earth lanthanum, and the mass ratio is 3:1.
(3) Taking stainless steel tool matrix containing composite infiltration layer, vacuumizing to 3.0X10 -3 Pa, argon is introduced to adjust the deposition pressure to be 0.8Pa, the deposition temperature is 400 ℃, the bias voltage is 150V, nitrogen is introduced, the nitrogen flow is 50sccm, pure Cr is used as a target material, a transition layer is subjected to magnetron sputtering on the surface of the composite infiltration layer, and the sputtering deposition time of the transition layer is 15min; then AlCrTiSi target material and CrMo target material are matched, and a hard layer is sputtered on the surface of the transition layer; the power of AlCrTiSi target is 2.0kw, the power of CrMo target is 0.3kw, and the sputtering deposition time of the hard layer is 4h.
(4) Taking a stainless steel tool matrix containing a hard coating, carrying out laser processing on the surface to form a pattern, wherein the laser processing pattern is a plurality of diamond structures, the centers of the plurality of longitudinal diamond structures are positioned on a straight line, the centers of the transverse longitudinal diamond structures are positioned on a straight line, and the laser engraving depth of the upper half part of each diamond structure is equal to the laser engraving depth of the lower half part of each diamond structure until the composite seepage layer is exposed; the side length of the diamond-shaped structure is 200 mu m, and the distance between two adjacent diamond-shaped structures is 300 mu m. Obtaining the finished stainless steel cutter. The laser processing adopts femtosecond laser, the power is 5W, the scanning frequency is 50KHz, and the scanning speed is 4mm/s.
Detection experiment:
1. the finished stainless steel cutters prepared in examples 1 to 4 and comparative examples 1 to 3 were subjected to a frictional wear test on the surfaces thereof at 25 ℃, and the frictional wear rate was tested and recorded at a linear velocity of 10mm/s, a normal load of 5N, a number of friction turns of 5000 turns, a friction radius of 6mm, with respect to alumina balls having a diameter of 6.0mm in the test at the test temperature.
2. The finished stainless steel tools prepared in examples 1 to 4 and comparative examples 1 to 3 were tested for surface hardness.
3. Antibacterial properties: performing plate counting test, sterilizing the samples prepared in examples 1-4 and comparative examples 1-3 at high temperature for 12h, grafting staphylococcus aureus into a liquid culture medium, culturing for 12h at 37 ℃ at a shaking table rotation speed of 120r/min, measuring strain concentration, and diluting to 10 -5 CFU/ml, putting the sample into a 12-hole plate, coating the diluted bacterial liquid on the surface of the sample, culturing for 24 hours in an incubator at 37 ℃, and calculating the antibacterial rate.
Conclusion: the application discloses an antibacterial hard stainless steel tool and a processing technology thereof, the whole processing steps are simple and convenient, and the prepared stainless steel tool not only has higher surface hardness, but also has excellent wear resistance, better antibacterial performance and higher practicability.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present application, and the present application is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present application has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (9)
1. The processing technology of the antibacterial hard stainless steel tool is characterized in that: the method comprises the following steps:
(1) Placing the stainless steel tool matrix in acetone, ultrasonically cleaning for 20-30 min, washing with deionized water, then placing in absolute ethyl alcohol, ultrasonically cleaning for 20-30 min, washing with deionized water, and drying with nitrogen;
(2) Ion nitriding the surface of the stainless steel tool matrix, and performing rare earth assisted permeation to form a stainless steel tool matrix containing a nitriding layer;
then taking copper-silver alloy as a source electrode target material, taking a uniformly perforated stainless steel sheet as an active screen, carrying out active screen nitriding on the surface of the nitriding layer of the stainless steel tool matrix, and carrying out rare earth auxiliary catalytic diffusion to form the stainless steel tool matrix with the composite diffusion layer;
(3) Taking stainless steel tool matrix containing composite infiltration layer, vacuumizing to 3.0X10 -3 Pa, argon is introduced to adjust the deposition pressure to be 0.8-1.0 Pa, the deposition temperature is 350-400 ℃, the bias voltage is 150V, nitrogen is introduced, pure Cr is used as a target material, and a transition layer is subjected to magnetron sputtering on the surface of the composite infiltration layer; then AlCrTiSi target material and CrMo target material are matched, and a hard layer is sputtered on the surface of the transition layer;
(4) And (3) taking a stainless steel cutter matrix containing a hard coating, and carrying out laser processing on the surface to form a pattern, wherein the laser processing pattern is of a plurality of diamond structures, so as to obtain the finished stainless steel cutter.
2. The process for manufacturing the antibacterial hard stainless steel tool according to claim 1, wherein the process comprises the following steps of: in the step (1), the stainless steel tool base body is SUS304 stainless steel; in the step (2), the stainless steel sheet is SUS304 stainless steel, the thickness of the stainless steel sheet is 0.4-0.5 mm, and the aperture is 5-6 mm.
3. The process for manufacturing the antibacterial hard stainless steel tool according to claim 1, wherein the process comprises the following steps of: in the step (2), specific process parameters of the nitriding layer are as follows: nitriding temperature is 500-520 ℃, nitriding gas source is ammonia gas, furnace pressure is 180-200 Pa, ammonia gas flow is 180-200 mL/min, and ion nitriding heat preservation time is 5-6 h.
4. The process for manufacturing the antibacterial hard stainless steel tool according to claim 1, wherein the process comprises the following steps of: in the step (2), the specific technological parameters of the composite seepage layer are as follows: regulating the flow rate of ammonia gas to be 100-120 mL/min, introducing hydrogen gas, and controlling the flow rate ratio of the nitrogen gas to the hydrogen gas to be 1:3, the pressure in the furnace is 300-350 Pa, the nitriding temperature is 370-380 ℃, the pulse voltage is 650V, the current is 20A, the nitriding time is 5-6 h, and the working bias voltage is 250-300V.
5. The process for manufacturing the antibacterial hard stainless steel tool according to claim 1, wherein the process comprises the following steps of: in the step (2), the distance between the rare earth and the stainless steel tool matrix is 10-30 mm, the rare earth is a mixture of rare earth cerium and rare earth lanthanum, and the mass ratio is (2-3): 1, a step of; the copper-silver alloy is Cu-3Ag or Cu-4Ag.
6. The process for manufacturing the antibacterial hard stainless steel tool according to claim 1, wherein the process comprises the following steps of: in the step (3), the flow of nitrogen is 50sccm, and the sputtering deposition time of the transition layer is 10-15 min; the power of AlCrTiSi target is 2.0kw, the power of CrMo target is 0.5-0.6 kw, and the sputtering deposition time of hard layer is 3-4 h.
7. The process for manufacturing the antibacterial hard stainless steel tool according to claim 1, wherein the process comprises the following steps of: in the step (4), the centers of a plurality of longitudinally arranged diamond structures are positioned on a straight line, the centers of a plurality of transversely arranged diamond structures are positioned on a straight line, the upper half part of each diamond structure is engraved by laser until the composite seepage layer is exposed, and the lower half part of each diamond structure is engraved by laser until the transition layer is exposed; the side length of the diamond structure is 200-300 mu m, and the distance between two adjacent diamond structures is 200-300 mu m.
8. The process for manufacturing the antibacterial hard stainless steel tool according to claim 1, wherein the process comprises the following steps of: in the step (4), the laser processing adopts femtosecond laser, the power is 3-5W, the scanning frequency is 50KHz, and the scanning speed is 3-4 mm/s.
9. A stainless steel tool manufactured by the manufacturing process of an antibacterial hard stainless steel tool according to any one of claims 1 to 8.
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