CN114214618A - High-toughness stainless steel for antibacterial cutter and preparation method thereof - Google Patents
High-toughness stainless steel for antibacterial cutter and preparation method thereof Download PDFInfo
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- CN114214618A CN114214618A CN202111472302.5A CN202111472302A CN114214618A CN 114214618 A CN114214618 A CN 114214618A CN 202111472302 A CN202111472302 A CN 202111472302A CN 114214618 A CN114214618 A CN 114214618A
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 102
- 239000010935 stainless steel Substances 0.000 title claims abstract description 33
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000010410 layer Substances 0.000 claims abstract description 48
- 239000012792 core layer Substances 0.000 claims abstract description 24
- 239000011247 coating layer Substances 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims description 39
- 238000011049 filling Methods 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000000137 annealing Methods 0.000 claims description 9
- 238000005498 polishing Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 6
- 239000010962 carbon steel Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000000889 atomisation Methods 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005097 cold rolling Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000010949 copper Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/106—Coating with metal alloys or metal elements only
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
- A01N59/20—Copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
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- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Mechanical Engineering (AREA)
- Dentistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention discloses a stainless steel for a high-toughness antibacterial cutter and a preparation method thereof. According to the stainless steel, the elastic core layer is filled in the stainless steel, and the vertical thinning groove on the outer side is matched, so that the stainless steel has very good toughness, and meanwhile, the antibacterial base layer and the sprayed antibacterial coating layer are met, so that the prepared cutter has a very good antibacterial effect, and the antibacterial service life is greatly prolonged.
Description
Technical Field
The invention relates to the field of antibacterial cutters, in particular to high-toughness stainless steel for an antibacterial cutter and a preparation method thereof.
Background
The antibacterial stainless steel is prepared by adding a proper amount of alloy elements with antibacterial effect into stainless steel, and performing antibacterial treatment to obtain a final product with stable processability and good antibacterial property. The antibacterial alloy elements comprise mercury, silver, lead, copper, aluminum, nickel, zinc, cadmium and the like, and according to the principle of no negative effect on a human body, the compound of silver, copper and silver-copper is generally added, the types of the existing antibacterial cutters are many, and an antibacterial layer is generally sprayed on the outer part of the antibacterial cutter.
Disclosure of Invention
The invention aims to solve the technical problem that the stainless steel for the high-toughness antibacterial cutter and the preparation method thereof are made of a new stainless steel material, can effectively improve the toughness and the antibacterial service life, and have better antibacterial effect and longer service life.
The invention is realized by the following technical scheme: the stainless steel for the high-strength and high-toughness antibacterial cutter comprises an antibacterial substrate layer made of austenitic antibacterial stainless steel, wherein a filling cavity is formed in the antibacterial substrate layer from top to bottom, a core layer with toughness is filled in the filling cavity, more than one thinning groove is vertically formed in two outer sides of the antibacterial substrate layer, and antibacterial coating layers are sprayed on two sides of the antibacterial substrate layer and in the thinning grooves, so that antibacterial surfaces are formed on two sides of the antibacterial substrate layer respectively.
As a preferred technical scheme, the core layer is made of a high-toughness metal material, and the upper end face of the core layer is flush with the upper end face of the antibacterial substrate layer.
A preparation method of stainless steel for a high-toughness antibacterial cutter comprises the following steps:
s1, selecting austenitic antibacterial stainless steel as an antibacterial substrate layer, polishing to a required thickness and size by using polishing equipment, and forming a filling cavity on the top of the antibacterial substrate layer by using a grooving machine;
s2, processing the core layer with the elastic performance into the same volume as the filling cavity, driving the core layer into the filling cavity by using mechanical equipment, enabling the core layer to be tightly matched and connected with the antibacterial substrate layer, and polishing the tops of the core layer and the antibacterial substrate layer to be smooth;
s3, preparing an antibacterial coating layer;
and S4, spraying the antibacterial coating layer on two sides of the antibacterial base layer by using external equipment, and finally filling the antibacterial coating layer in the thinning grooves on the two sides of the antibacterial base layer until the two sides of the antibacterial base layer are flush.
As a preferred technical scheme, the preparation process of the antibacterial coating layer is as follows:
heating Cu, Ag and rare earth elements to form a mixed solution, adding a binder into the mixed solution, and fully and uniformly stirring;
smelting the raw materials in a smelting crucible, and preparing the smelted molten steel into spherical powder with the particle size of 1-30 microns through high-pressure supersonic nitrogen atomization;
step three, powder reduction annealing: under the protection of hydrogen, reducing and annealing the powder to control the oxygen content in the powder to be below 0.4 wt%, wherein the annealing temperature is 200-500 ℃;
spraying the powder on the surface of the carbon steel layer substrate to prepare a contact interface between the carbon steel substrate and the antibacterial stainless steel coating, wherein the spraying driving gas is a mixed gas of nitrogen, hydrogen and helium;
fifthly, heating the steel plate by adopting electromagnetic waves above 350kHz at 1050-1200 ℃;
heating the surface of the antibacterial substrate layer in the last step to 600 ℃ and 800 ℃ by adopting 20-50kHz electromagnetic waves, and carrying out air cooling after heat preservation;
and step seven, cold rolling to obtain a finished product.
The invention has the beneficial effects that: according to the stainless steel, the elastic core layer is filled in the stainless steel, and the vertical thinning groove on the outer side is matched, so that the stainless steel has very good toughness, and meanwhile, the antibacterial base layer and the sprayed antibacterial coating layer are met, so that the prepared cutter has a very good antibacterial effect, and the antibacterial service life is greatly prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a stainless steel substrate according to the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The use of terms such as "upper," "above," "lower," "below," and the like in describing relative spatial positions herein is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly
In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in figure 1, the stainless steel for the high-toughness antibacterial cutter and the preparation method thereof comprise an antibacterial substrate layer 1 made of austenitic antibacterial stainless steel, wherein a filling cavity is formed in the antibacterial substrate layer from top to bottom, a core layer 3 with toughness is filled in the filling cavity, more than one thinning groove 2 is vertically formed in two outer sides of the antibacterial substrate layer, and antibacterial coating layers are sprayed on two sides of the antibacterial substrate layer and in the thinning grooves, so that antibacterial surfaces are respectively formed on two sides of the antibacterial substrate layer, the core layer is made of a metal material with high toughness, and the upper end surface of the core layer is flush with the upper end surface of the antibacterial substrate layer.
The method comprises the following steps:
s1, selecting austenitic antibacterial stainless steel as an antibacterial substrate layer, polishing to a required thickness and size by using polishing equipment, and forming a filling cavity on the top of the antibacterial substrate layer by using a grooving machine;
s2, processing the core layer with the elastic performance into the same volume as the filling cavity, driving the core layer into the filling cavity by using mechanical equipment, enabling the core layer to be tightly matched and connected with the antibacterial substrate layer, and polishing the tops of the core layer and the antibacterial substrate layer to be smooth;
s3, preparing an antibacterial coating layer;
and S4, spraying the antibacterial coating layer on two sides of the antibacterial base layer by using external equipment, and finally filling the antibacterial coating layer in the thinning grooves on the two sides of the antibacterial base layer until the two sides of the antibacterial base layer are flush.
The preparation process of the antibacterial coating layer is as follows: heating Cu, Ag and rare earth elements to form a mixed solution, adding a binder into the mixed solution, and fully and uniformly stirring; smelting the raw materials in a smelting crucible, and preparing the smelted molten steel into spherical powder with the particle size of 1-30 microns through high-pressure supersonic nitrogen atomization; powder reduction annealing: under the protection of hydrogen, reducing and annealing the powder to control the oxygen content in the powder to be below 0.4 wt%, wherein the annealing temperature is 200-500 ℃; spraying the powder on the surface of the carbon steel layer substrate to prepare a contact interface between the carbon steel substrate and the antibacterial stainless steel coating, wherein the spraying driving gas is a mixed gas of nitrogen, hydrogen and helium; heating the glass by adopting electromagnetic waves above 350kHz, wherein the heating temperature is 1050-1200 ℃; heating the surface of the antibacterial substrate layer in the last step to 600-800 ℃ by adopting electromagnetic waves of 20-50kHz, and carrying out air cooling after heat preservation; and (5) cold rolling to obtain a finished product.
The invention has the beneficial effects that: according to the stainless steel, the elastic core layer is filled in the stainless steel, and the vertical thinning groove on the outer side is matched, so that the stainless steel has very good toughness, and meanwhile, the antibacterial base layer and the sprayed antibacterial coating layer are met, so that the prepared cutter has a very good antibacterial effect, and the antibacterial service life is greatly prolonged.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (4)
1. A stainless steel for high-strength and high-toughness antibacterial cutters and a preparation method thereof are characterized in that: the antibacterial substrate layer is provided with a filling cavity from top to bottom, a core layer with toughness is filled in the filling cavity, more than one thinning groove is vertically formed in two sides of the outer side of the antibacterial substrate layer, and antibacterial coating layers are sprayed on two sides of the antibacterial substrate layer and in the thinning grooves, so that antibacterial surfaces are respectively formed on two sides of the antibacterial substrate layer.
2. The stainless steel for high-toughness antibacterial cutting tools according to claim 1, wherein: the core layer is made of a high-toughness metal material, and the upper end face of the core layer is flush with the upper end face of the antibacterial substrate layer.
3. A preparation method of stainless steel for a high-toughness antibacterial cutter is characterized by comprising the following steps:
s1, selecting austenitic antibacterial stainless steel as an antibacterial substrate layer, polishing to a required thickness and size by using polishing equipment, and forming a filling cavity on the top of the antibacterial substrate layer by using a grooving machine;
s2, processing the core layer with the elastic performance into the same volume as the filling cavity, driving the core layer into the filling cavity by using mechanical equipment, enabling the core layer to be tightly matched and connected with the antibacterial substrate layer, and polishing the tops of the core layer and the antibacterial substrate layer to be smooth;
s3, preparing an antibacterial coating layer;
and S4, spraying the antibacterial coating layer on two sides of the antibacterial base layer by using external equipment, and finally filling the antibacterial coating layer in the thinning grooves on the two sides of the antibacterial base layer until the two sides of the antibacterial base layer are flush.
4. The method for preparing the stainless steel for the high-toughness antibacterial cutter according to claim 3, is characterized in that: the preparation process of the antibacterial coating layer is as follows:
heating Cu, Ag and rare earth elements to form a mixed solution, adding a binder into the mixed solution, and fully and uniformly stirring;
smelting the raw materials in a smelting crucible, and preparing the smelted molten steel into spherical powder with the particle size of 1-30 microns through high-pressure supersonic nitrogen atomization;
step three, powder reduction annealing: under the protection of hydrogen, reducing and annealing the powder to control the oxygen content in the powder to be below 0.4 wt%, wherein the annealing temperature is 200-500 ℃;
spraying the powder on the surface of the carbon steel layer substrate to prepare a contact interface between the carbon steel substrate and the antibacterial stainless steel coating, wherein the spraying driving gas is a mixed gas of nitrogen, hydrogen and helium;
fifthly, heating the steel plate by adopting electromagnetic waves above 350kHz at 1050-1200 ℃;
heating the surface of the antibacterial substrate layer in the last step to 600-800 ℃ by adopting 20-50kHz electromagnetic waves, and carrying out air cooling after heat preservation;
and step seven, cold rolling to obtain a finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111472302.5A CN114214618B (en) | 2021-12-04 | 2021-12-04 | Stainless steel for high-strength and high-toughness antibacterial cutters and preparation method thereof |
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| CN202111472302.5A CN114214618B (en) | 2021-12-04 | 2021-12-04 | Stainless steel for high-strength and high-toughness antibacterial cutters and preparation method thereof |
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| CN114214618B CN114214618B (en) | 2023-08-08 |
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| DE102019122333A1 (en) * | 2019-08-20 | 2021-02-25 | Reinhard Hafellner | Elastic sandwich component |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4618540A (en) * | 1983-05-13 | 1986-10-21 | Santrade Limited | Compound body and method of making the same |
| JPH063994A (en) * | 1992-06-22 | 1994-01-14 | Showa Electric Wire & Cable Co Ltd | Production of rubber roller coated with fluororesin |
| JPH08193218A (en) * | 1995-01-13 | 1996-07-30 | Nisshin Steel Co Ltd | Production of stainless steel with antibacterial film |
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| CN110170605A (en) * | 2019-04-26 | 2019-08-27 | 佛山市徐城记厨具有限公司 | The preparation method of cutter and its composite material and the composite material |
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