CN112575259A - Antiviral austenitic stainless steel material and preparation process thereof - Google Patents

Antiviral austenitic stainless steel material and preparation process thereof Download PDF

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Publication number
CN112575259A
CN112575259A CN202011619803.7A CN202011619803A CN112575259A CN 112575259 A CN112575259 A CN 112575259A CN 202011619803 A CN202011619803 A CN 202011619803A CN 112575259 A CN112575259 A CN 112575259A
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stainless steel
temperature
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邵兴明
陈杰
戴雪琴
黄月华
华丽平
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Jiangsu Xinhe Alloy Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/002—Hybrid process, e.g. forging following casting
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—Cold rolling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/18—Electroslag remelting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese

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  • Organic Chemistry (AREA)
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  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

The invention provides an antiviral austenitic stainless steel material, which comprises the following elements in percentage by weight: less than or equal to 0.08 percent of C, less than or equal to 1.0 percent of Si, less than or equal to 2.0 percent of Mn, less than or equal to 0.020 percent of P, less than or equal to 0.010 percent of S, 18.0-20.0 percent of Cr, 8.0-12.0 percent of Ni, 0.030-0.060 percent of As, less than or equal to 0.0050 percent of O, less than or equal to 0.0050 percent of N, less than or equal to 0.0005 percent of H, and the balance of Fe and inevitable impurities. The invention also provides a preparation process of the antiviral austenitic stainless steel material, which comprises the following steps: vacuum smelting, electroslag, forging, hot rolling and solution treatment. According to the antiviral austenitic stainless steel material and the preparation process thereof provided by the invention, trace arsenic element is added on the basis of the original stainless steel, and the preparation process is reasonably designed, so that the stainless steel material with lasting antibacterial and antiviral functions is produced, the original performance of the stainless steel can be maintained, the stainless steel material is widely applied to appliances such as food medical treatment and the like, and the condition that a large amount of new coronavirus is spread by depending on objects at the present stage can be well inhibited.

Description

Antiviral austenitic stainless steel material and preparation process thereof
Technical Field
The invention relates to the field of high-temperature stainless steel materials, in particular to an antiviral austenitic stainless steel material and a preparation process thereof.
Background
The stainless steel is a stainless steel material with excellent corrosion resistance, wear resistance and toughness, has excellent mechanical property and good chemical stability, and has wide application in the building industry, furniture and appliances, kitchen equipment, automobile industry, office supplies, food, medical treatment and other aspects. Along with the improvement of living standard, people pay more and more attention to environment and self health, if the stainless steel material contacts grease and the like in the using process, bacteria can be promoted to breed, adverse effects are brought to the health of people, and meanwhile various viruses can survive on the stainless steel material for a certain time. Therefore, research and development of the antibacterial and antiviral stainless steel become research hotspots of novel functional stainless steel in recent years, and the antibacterial and antiviral stainless steel not only can maintain the mechanical property and the surface smoothness of a stainless steel matrix, but also has certain antibacterial and antiviral effects.
At present, along with the outbreak and the repetition of the new corona epidemic situation, particularly the multiple transmission through objects, the development of an antiviral austenitic stainless steel material and a preparation process thereof are urgently needed, so that the stainless steel has antibacterial and antiviral properties, meets the diversified and complex antibacterial and antiviral requirements of people, and is suitable for large-scale popularization and can inhibit the new corona virus from being transmitted by the objects.
Disclosure of Invention
The invention aims to solve the problems and provides an antiviral austenitic stainless steel material and a preparation process thereof, which are used for helping to inhibit the transmission of new coronavirus.
In order to achieve the purpose, the invention adopts the following technical scheme:
the antiviral austenitic stainless steel material comprises the following elements in percentage by weight:
less than or equal to 0.08 percent of C, less than or equal to 1.0 percent of Si, less than or equal to 2.0 percent of Mn, less than or equal to 0.020 percent of P, less than or equal to 0.010 percent of S, 18.0-20.0 percent of Cr, 8.0-12.0 percent of Ni, 0.030-0.060 percent of As, less than or equal to 0.0050 percent of O, less than or equal to 0.0050 percent of N, less than or equal to 0.0005 percent of H, and the balance of Fe and inevitable impurities.
Preferably, the weight percentages of the elements in the antiviral austenitic stainless steel material are respectively as follows:
less than or equal to 0.06 percent of C, less than or equal to 0.8 percent of Si, less than or equal to 2.0 percent of Mn, less than or equal to 0.010 percent of P, less than or equal to 0.010 percent of S, 19.0-20.0 percent of Cr, 10.0-12.0 percent of Ni, 0.040-0.050 percent of As, less than or equal to 0.0040 percent of O, less than or equal to 0.0040 percent of N, less than or equal to 0.0004 percent of H, and the balance of Fe and inevitable impurities.
The invention also provides a preparation process of any one of the antiviral austenitic stainless steel materials, which comprises the following steps:
s1 vacuum smelting, namely, grinding block materials and returning to production, or adding 1/4 of small blocks of pure iron and small blocks of nickel plates into the bottom, adding 0.020% of bottom carbon, placing Cr on the middle upper part of a crucible, covering the upper part with a Ni plate and executing according to a vacuum smelting process, wherein the vacuum degree in the melting period is less than 5 Pa, the vacuum degree in the refining period is less than or equal to 2Pa, performing high-temperature instantaneous refining and low-temperature long-time refining for more than 15 minutes at least twice, raising the steel temperature to 1560 ℃ for 1-2 minutes, stirring in a rocking furnace for 3-5 minutes, reducing the steel temperature to 1450 ℃ (in a just film-forming and film-punching state), adjusting the refining temperature to 1580 ℃ again, adjusting the refining time to be more than or equal to 30 minutes, adjusting the tapping temperature to 1580 ℃ under the condition of good deoxidation, casting 280 electrodes, fully supplementing shrinkage in the later period of.
S2 electroslag, cleaning surface impurity of electrode, cutting end shrinkage cavity, grinding surface, baking slag, preparing CaF2：AL2O3= 70: 30, electric power system: the voltage is 55-60V, the current is 6000-9000A, the electroslag is protected by argon in the whole process, and the later stage of the electroslag is fully fed, so that no shrinkage cavity is ensured.
And S3 forging, heating the steel ingot in a natural gas furnace, keeping the temperature of the steel ingot at 1160-1200 ℃ for 3h, keeping the forging temperature at or above 1150 ℃, keeping the finish forging temperature at or above 950 ℃, keeping the forging ratio at or above 4, grinding and detecting the surface, and detecting and removing the defect parts by ultrasonic flaw detection.
S4 Hot Rolling temperature: and (4) rolling and air cooling at 1150-1180 ℃ until the rolling specification is reached.
And S5, cold rolling, namely, the steel strip is pickled without scale on the surface, is connected into a large coil and is cold rolled to the required specification.
And S6, grinding the surface of the steel strip, and sampling and detecting a finished product.
Compared with the prior art, the invention has the beneficial effects that:
according to the antiviral austenitic stainless steel material and the preparation process thereof, trace arsenic elements are added on the basis of the original stainless steel to form trace arsenide, and the preparation process is reasonably designed, so that the stainless steel material with lasting antibacterial and antiviral functions is produced, and the original performance of the stainless steel can be maintained. The product can be widely applied to appliances such as food medical treatment and the like, and can effectively inhibit the condition that a large amount of new coronavirus is spread by objects at the present stage.
Drawings
FIG. 1 is a flow chart of an antiviral austenitic stainless steel material and a preparation process thereof.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
In order to achieve the purpose, the invention adopts the following technical scheme:
the antiviral austenitic stainless steel material comprises the following elements in percentage by weight:
less than or equal to 0.08 percent of C, less than or equal to 1.0 percent of Si, less than or equal to 2.0 percent of Mn, less than or equal to 0.020 percent of P, less than or equal to 0.010 percent of S, 18.0-20.0 percent of Cr, 8.0-12.0 percent of Ni, 0.030-0.060 percent of As, less than or equal to 0.0050 percent of O, less than or equal to 0.0050 percent of N, less than or equal to 0.0005 percent of H, and the balance of Fe and inevitable impurities.
Preferably, the antiviral austenitic stainless steel material comprises the following elements in percentage by weight:
less than or equal to 0.06 percent of C, less than or equal to 0.8 percent of Si, less than or equal to 2.0 percent of Mn, less than or equal to 0.010 percent of P, less than or equal to 0.010 percent of S, 19.0-20.0 percent of Cr, 10.0-12.0 percent of Ni, 0.040-0.050 percent of As, less than or equal to 0.0040 percent of O, less than or equal to 0.0040 percent of N, less than or equal to 0.0004 percent of H, and the balance of Fe and inevitable impurities.
The key elements in the antiviral austenitic stainless steel material of the invention play the following roles:
cr promotes the surface of the steel to form a passive film, and when a certain content of Cr exists, the corrosion resistance of the steel is obviously improved. The invention designs the chromium content to be 18-20%, which can improve the corrosion resistance of the stainless steel.
Ni is used as a matrix in the nickel-based high-temperature stainless steel to form an austenite matrix, and the intergranular corrosion resistance of the stainless steel is improved along with the increase of the nickel content, and the nickel content is designed to be not less than 8-12%, so that the stainless steel has higher strength and good oxidation resistance and corrosion resistance.
As is arsenic is a non-metallic element, is off-white, brittle and toxic. The compound can be used as bactericide and pesticide, wherein arsenic trioxide is called arsenic trioxide and is a substance with strong toxicity, but trace arsenic trioxide can effectively sterilize and disinfect under the condition of not harming human body, the content of the arsenic trioxide is designed to be 0.040-0.050%, and the arsenic trioxide is used for killing bacteria and viruses on the surface of stainless steel.
The invention also provides a preparation process for producing any one of the antiviral austenitic stainless steel materials, which comprises the following steps:
s1 vacuum smelting, namely, grinding block materials and returning to production, or adding 1/4 of small blocks of pure iron and small blocks of nickel plates into the bottom, adding 0.020% of bottom carbon, placing Cr on the middle upper part of a crucible, covering the upper part with a Ni plate and executing according to a vacuum smelting process, wherein the vacuum degree in the melting period is less than 5 Pa, the vacuum degree in the refining period is less than or equal to 2Pa, performing high-temperature instantaneous refining and low-temperature long-time refining for more than 15 minutes at least twice, raising the steel temperature to 1560 ℃ for 1-2 minutes, stirring in a rocking furnace for 3-5 minutes, reducing the steel temperature to 1450 ℃ (in a just film-forming and film-punching state), adjusting the refining temperature to 1580 ℃ again, adjusting the refining time to be more than or equal to 30 minutes, adjusting the tapping temperature to 1580 ℃ under the condition of good deoxidation, casting 280 electrodes, fully supplementing shrinkage in the later period of.
S2 electroslag, cleaning surface impurity of electrode and cutting end shrinkage cavity,Grinding surface, baking slag charge, preparing CaF2：AL2O3= 70: 30, electric power system: the voltage is 55-60V, the current is 6000-9000A, the electroslag is protected by argon in the whole process, the later stage of the electroslag is fully fed, no shrinkage cavity is ensured, and the number of electroslag ingots is 2000 kg/1.
And S3 forging, heating the steel ingot by using a natural gas furnace, heating the steel ingot by using a heating system of 1160-1200 ℃, preserving the heat of the steel ingot for 3h, keeping the forging temperature at or above 1150 ℃, keeping the finish forging temperature at or above 950 ℃, keeping the forging ratio at or above 4, carrying out surface grinding detection, carrying out ultrasonic flaw detection to remove the defect part, and keeping the forging specification at S =80mm x 260mm x 1000 mm.
S4 Hot Rolling temperature: 1150 ℃ -1180 ℃, rolling specification: the section is 3.8mm 265mm rolling, air cooling.
And S5 cold rolling, namely, the pickled surface of the steel strip is free of scale, the steel strip is connected into a large coil, the steel strip is cold rolled to S =3mm 265mm, the positive and negative tolerance is controlled to be +0.15 mm and-0 mm, and the finished product is annealed, stripped and straightened to have the specification of S =3mm 250mm 2000 mm.
And (S6) grinding the surface of the steel strip, wherein the specification of the finished product is S =3mm × 250mm × 2000mm, the tolerance is +/-0.1, the unevenness is less than or equal to 4mm, and the finished product is sampled and detected.
The forged blank produced by the preparation process has no shrinkage cavity, bubble, hole, turning, crack, inclusion, white point, delamination and point segregation.
According to the invention, trace arsenic element is added on the basis of the original stainless steel to form trace arsenide, and the preparation process is reasonably designed, so that the stainless steel material with lasting antibacterial and antiviral functions is produced, and the original performance of the stainless steel can be maintained. The product can be widely applied to appliances such as food medical treatment and the like, and can effectively inhibit the condition that a large amount of new coronavirus is spread by objects at the present stage.
Example 1:
in the antiviral austenitic stainless steel material of embodiment 1 of the invention, the weight percentages of the elements are as follows:
0.08% of C, 1.0% of Si, 2.0% of Mn, 0.020% of P, 0.010% of S, 20.0% of Cr, 12.0% of Ni, 0.060% of As, 0.0050% of O, 0.0050% of N, 0.0005% of H, and the balance of Fe and inevitable impurities.
The preparation process of the antiviral austenitic stainless steel material of the embodiment is as follows:
s1 vacuum smelting, namely, grinding block materials and returning to production, or adding 1/4 of small blocks of pure iron and small blocks of nickel plates into the bottom, adding 0.020% of bottom carbon, placing Cr on the middle upper part of a crucible, covering the upper part with a Ni plate and executing according to a vacuum smelting process, wherein the vacuum degree in the melting period is 4.9Pa, the vacuum degree in the refining period is 2Pa, three times of high-temperature instantaneous refining and one time of low-temperature long-time refining are adopted for 18 minutes, the steel temperature is increased to 1560 ℃ and lasts for 2 minutes, the furnace is shaken and stirred for 5 minutes, the steel temperature is reduced to 1450 ℃ (the film punching state of a just-formed film), the refining temperature is adjusted again, the refining time is 35 minutes, under the condition of good deoxidation, the tapping temperature is adjusted to 1580 ℃, 280 electrodes are cast, the after-stage feeding is sufficient, and the mold is.
S2 electroslag, cleaning surface impurity of electrode, cutting end shrinkage cavity, grinding surface, baking slag, preparing CaF2：AL2O3= 70: 30, electric power system: the voltage is 60V, the current is 9000A, argon gas protects electroslag in the whole process, the later stage of the electroslag is fully fed, no shrinkage cavity is ensured, and the number of electroslag ingots is 2000 kg/1.
And S3 forging, namely heating the steel ingot by using a natural gas furnace, keeping the temperature of the steel ingot for 3h, keeping the forging temperature at 1200 ℃, keeping the final forging temperature at 1000 ℃, keeping the forging ratio at 5, carrying out surface grinding detection, and carrying out ultrasonic flaw detection to remove the defect part, wherein the forging specification is S =80mm x 260mm x 1000 mm.
S4 Hot Rolling temperature: 1180 ℃, rolling specification: the section is 3.8mm 265mm rolling, air cooling.
And S5 cold rolling, namely, the pickled surface of the steel strip is free of scale, the steel strip is connected into a large coil, the steel strip is cold rolled to S =3mm 265mm, the positive and negative tolerance is controlled to be +0.15 mm and-0 mm, and the finished product is annealed, stripped and straightened to have the specification of S =3mm 250mm 2000 mm.
And (S6) grinding the surface of the steel strip, wherein the specification of the finished product is S =3mm × 250mm × 2000mm, the tolerance is +/-0.1 mm, the unevenness is less than or equal to 4mm, and the finished product is sampled and detected.
Example 2:
in the antiviral austenitic stainless steel material of embodiment 2 of the invention, the weight percentages of the elements are as follows:
0.06% of C, 0.8% of Si, 1.8% of Mn, 0.010% of P, 0.010% of S, 19.5% of Cr, 11.0% of Ni, 0.040% of As, 0.0040% of O, 0.0040% of N, 0.0004% of H, and the balance of Fe and inevitable impurities.
The preparation process of the antiviral austenitic stainless steel material of the embodiment is as follows:
s1 vacuum smelting, namely, grinding block materials and returning to production, or adding 1/4 parts of small blocks of pure iron and small blocks of nickel plates into the bottom, adding 0.020% of bottom carbon, placing Cr on the middle upper part of a crucible, covering the upper part with a Ni plate and executing according to a vacuum smelting process, wherein the vacuum degree in the melting period is less than 5 Pa, the vacuum degree in the refining period is 1.82Pa, performing high-temperature instantaneous refining twice and low-temperature long-time refining once for 17 minutes, raising the steel temperature to 1560 ℃ for 2 minutes, shaking the furnace and stirring for 4 minutes, reducing the steel temperature to 1450 ℃ (the just film-forming and film-punching state), adjusting the refining temperature to 1580 ℃, refining time to 32 minutes, adjusting the tapping temperature to 1580 ℃ under the condition of good deoxidation, pouring 280 electrodes, fully supplementing and shrinking in the later period, and breaking and taking out a mold mark after finishing casting for 20.
S2 electroslag, cleaning surface impurity of electrode, cutting end shrinkage cavity, grinding surface, baking slag, preparing CaF2：AL2O3= 70: 30, electric power system: the voltage is 58V, the current is 7500A, argon is used for electroslag protection in the whole process, the later stage of the electroslag is fully fed, no shrinkage cavity is ensured, and the number of electroslag ingots is 2000 kg/1.
And S3 forging, heating the steel ingot by using a natural gas furnace, heating the steel ingot by using a heating system of 1180 ℃, preserving the heat of the steel ingot for 3 hours, carrying out open forging temperature of 1180 ℃, carrying out finish forging temperature of 980 ℃, carrying out forging ratio of 4, carrying out surface grinding detection, carrying out ultrasonic flaw detection to remove the defect part, and carrying out forging specification S =80mm x 260mm x 1000 mm.
S4 Hot Rolling temperature: 1160 ℃, rolling specification: the section is 3.8mm 265mm rolling, air cooling.
And S5 cold rolling, namely, the pickled surface of the steel strip is free of scale, the steel strip is connected into a large coil, the steel strip is cold rolled to S =3mm 265mm, the positive and negative tolerance is controlled to be +0.15 mm and-0 mm, and the finished product is annealed, stripped and straightened to have the specification of S =3mm 250mm 2000 mm.
And (S6) grinding the surface of the steel strip, wherein the specification of the finished product is S =3mm × 250mm × 2000mm, the tolerance is +/-0.1, the unevenness is less than or equal to 4mm, and the finished product is sampled and detected.
Example 3:
in the antiviral austenitic stainless steel material of embodiment 3 of the invention, the weight percentages of the elements are as follows:
0.04% of C, 0.8% of Si, 1.6% of Mn, 0.010% of P, 0.010% of S, 18.0% of Cr, 10.0% of Ni, 0.030% of As, 0.0030% of O, 0.0030% of N, 0.0003% of H, and the balance of Fe and inevitable impurities.
The preparation process of the antiviral austenitic stainless steel material of the embodiment is as follows:
s1 vacuum smelting, namely, grinding block materials and performing full-return production, or adding 1/4 of small blocks of pure iron and small blocks of nickel plates into the bottom, adding 0.020% of bottom carbon, placing Cr on the middle upper part of a crucible, covering the upper part with a Ni plate and performing according to a vacuum smelting process, wherein the vacuum degree in the melting period is 4.5 Pa, the vacuum degree in the refining period is 1.7Pa, performing high-temperature instantaneous refining twice and low-temperature long-time refining once for 16 minutes, raising the steel temperature to 1560 ℃ for 1 minute, stirring for 3 minutes by rocking a furnace, reducing the steel temperature to 1450 ℃ in a state of just forming films and punching films, adjusting the refining temperature to 1580 ℃, refining time for 30 minutes, adjusting the tapping temperature to 1580 ℃ under the condition of good deoxidation, pouring 280 electrodes, fully supplementing and shrinking in the later period, and breaking the empty mold and taking out after the casting is completed for.
S2 electroslag, cleaning surface impurity of electrode, cutting end shrinkage cavity, grinding surface, baking slag, preparing CaF2：AL2O3= 70: 30, electric power system: the voltage is 55V, the current is 6000A, the electroslag is protected by argon in the whole process, the later stage of the electroslag is fully fed, no shrinkage cavity is ensured, and the number of electroslag ingots is 2000 kg/1.
And S3 forging, namely heating the steel ingot by using a natural gas furnace, keeping the temperature of the steel ingot for 3h under the heating system of 1160 ℃, keeping the forging temperature of 1150 ℃, keeping the final forging temperature of 950 ℃, keeping the forging ratio of 4, carrying out surface grinding detection, carrying out ultrasonic flaw detection to remove the defect part, and keeping the forging specification of S =80mm x 260mm x 1000 mm.
S4 Hot Rolling temperature: 1150 ℃, rolling specification: the section is 3.8mm 265mm rolling, air cooling.
And S5 cold rolling, namely, the pickled surface of the steel strip is free of scale, the steel strip is connected into a large coil, the steel strip is cold rolled to S =3mm 265mm, the positive and negative tolerance is controlled to be +0.15 mm and-0 mm, and the finished product is annealed, stripped and straightened to have the specification of S =3mm 250mm 2000 mm.
And (S6) grinding the surface of the steel strip, wherein the specification of the finished product is S =3mm × 250mm × 2000mm, the tolerance is +/-0.1, the unevenness is less than or equal to 4mm, and the finished product is sampled and detected.
In conclusion, the invention provides an antiviral austenitic stainless steel material and a preparation process thereof, wherein trace arsenic element is added on the basis of the original stainless steel to form trace arsenide, and the preparation process is reasonably designed, so that the stainless steel material with lasting antibacterial and antiviral functions is produced, and the original performance of the stainless steel can be maintained. The product can be widely applied to appliances such as food medical treatment and the like, and can effectively inhibit the condition that a large amount of new coronavirus is spread by objects at the present stage.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.

Claims (3)

1. The antiviral austenitic stainless steel material is characterized in that the antiviral austenitic stainless steel material comprises the following elements in percentage by weight:
less than or equal to 0.08 percent of C, less than or equal to 1.0 percent of Si, less than or equal to 2.0 percent of Mn, less than or equal to 0.020 percent of P, less than or equal to 0.010 percent of S, 18.0-20.0 percent of Cr, 8.0-12.0 percent of Ni, 0.030-0.060 percent of As, less than or equal to 0.0050 percent of O, less than or equal to 0.0050 percent of N, less than or equal to 0.0005 percent of H, and the balance of Fe and inevitable impurities.
2. The antiviral austenitic stainless steel material as claimed in claim 1, wherein the weight percentages of the elements in the antiviral austenitic stainless steel material are respectively:
less than or equal to 0.06 percent of C, less than or equal to 0.8 percent of Si, less than or equal to 2.0 percent of Mn, less than or equal to 0.010 percent of P, less than or equal to 0.010 percent of S, 19.0-20.0 percent of Cr, 10.0-12.0 percent of Ni, 0.040-0.050 percent of As, less than or equal to 0.0040 percent of O, less than or equal to 0.0040 percent of N, less than or equal to 0.0004 percent of H, and the balance of Fe and inevitable impurities.
3. The process for the preparation of an antiviral austenitic stainless steel material according to any of claims 1 or 2, comprising the steps of:
s1 vacuum smelting, namely, grinding lump materials for full return production, or adding 1/4 of small pure iron and small nickel plates into the bottom, adding 0.020% of bottom carbon, placing Cr on the middle upper part of a crucible, covering the upper part with a Ni plate, executing the vacuum smelting process, ensuring that the vacuum degree in the melting period is less than 5 Pa, the vacuum degree in the refining period is less than or equal to 2Pa, adopting high-temperature instantaneous refining and one-time low-temperature long-time refining which are not less than two times for more than 15 minutes, raising the steel temperature to 1560 ℃ for 1-2 minutes, stirring in a furnace for 3-5 minutes, reducing the steel temperature to 1450 ℃ (in a just film-forming and film-punching state), adjusting the refining temperature to 1580 ℃, ensuring that the refining time is not less than 30 minutes, adjusting the tapping temperature to 1580 ℃ under the condition of good deoxidation, pouring 280 electrodes, fully supplementing shrinkage in the later period of pouring, and;
s2 electroslag, cleaning surface impurity of electrode, cutting end shrinkage cavity, grinding surface, baking slag, preparing CaF2：AL2O3= 70: 30, electric power system: the voltage is 55-60V, the current is 6000-9000A, the electroslag is protected by argon in the whole process, and the later stage of the electroslag is fully fed, so that no shrinkage cavity is ensured;
s3 forging, heating the steel ingot in a natural gas furnace, keeping the temperature of the steel ingot for 3 hours under the heating system of 1160-1200 ℃, keeping the forging temperature at or above 1150 ℃, keeping the finish forging temperature at or above 950 ℃, keeping the forging ratio at or above 4, carrying out surface grinding detection, and carrying out ultrasonic flaw detection to remove the defect part;
s4 Hot Rolling temperature: rolling and air cooling at 1150-1180 deg.c to rolling specification;
s5 cold rolling, wherein the pickled surface of the steel strip has no oxide skin, the steel strip is connected into a large coil and is cold rolled to the required specification;
and S6, grinding the surface of the steel strip, and sampling and detecting a finished product.
CN202011619803.7A 2020-12-31 2020-12-31 Antiviral austenitic stainless steel material and preparation process thereof Pending CN112575259A (en)

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CN115612917A (en) * 2021-07-15 2023-01-17 振石集团东方特钢有限公司 Stainless steel and preparation method and application thereof

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CN115612917A (en) * 2021-07-15 2023-01-17 振石集团东方特钢有限公司 Stainless steel and preparation method and application thereof
CN115612917B (en) * 2021-07-15 2024-02-09 振石集团东方特钢有限公司 Stainless steel and preparation method and application thereof
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Application publication date: 20210330