CN112458258A - Corrosion-resistant treatment method for antibacterial stainless steel - Google Patents
Corrosion-resistant treatment method for antibacterial stainless steel Download PDFInfo
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- CN112458258A CN112458258A CN202011420892.2A CN202011420892A CN112458258A CN 112458258 A CN112458258 A CN 112458258A CN 202011420892 A CN202011420892 A CN 202011420892A CN 112458258 A CN112458258 A CN 112458258A
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- stainless steel
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- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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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
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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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
- C22C38/18—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
Abstract
The invention relates to the technical field of new material processing, and discloses a corrosion-resistant treatment method of an antibacterial stainless steel.
Description
Technical Field
The invention belongs to the technical field of new material processing, and particularly relates to a corrosion-resistant treatment method of antibacterial stainless steel.
Background
With the development of social level, people begin to know the harm of various pathogenic bacteria, and the harmful bacteria cannot be identified by human eyes and are everywhere in life, so that the important hidden danger of threatening the physical health of people is caused. In order to meet the requirements of people on bacteria prevention and bacteria resistance of medical machinery, living appliances and the like, various stainless steel products with antibacterial performance are developed. A certain amount of antibacterial metal elements such as Cu, Ag, Zn and the like are added into the common stainless steel, the casting, forging, rolling and heat treatment processes are controlled, so that the antibacterial metal elements are uniformly and dispersedly precipitated in a stainless steel matrix in a certain size and shape, the volume percentage of precipitated phases is ensured, and the common stainless steel is endowed with excellent antibacterial performance under the condition of not reducing the mechanical property and the corrosion resistance of the common stainless steel.
Copper-containing stainless steel is prepared by adding a certain amount of copper into stainless steel and carrying out heat treatment to achieve the aim of antibiosis, in order to improve the antibiosis effect, high-content copper element is needed to cause adverse effect on the structural performance of the stainless steel, and grain boundary sensitivity is also increased to cause galvanic corrosion, so that the corrosion resistance of the stainless steel is greatly reduced, and the use of the stainless steel is limited.
Disclosure of Invention
The invention aims to provide a corrosion-resistant treatment method of antibacterial stainless steel aiming at the existing problems.
The invention is realized by the following technical scheme:
the corrosion resisting treatment process of antiseptic stainless steel includes the following steps:
(1) firstly, performing solution quenching on antibacterial stainless steel: rapidly heating to 1085-1090 ℃ at the speed of 33-34 ℃/min, carrying out solid solution for 26-28 min, and carrying out water cooling;
(2) then carrying out staged aging treatment: the first stage, aging at 420-430 deg.C for 18-20 min, cooling to room temperature; the second stage, aging at 480-500 deg.C for 70-80 min, cooling to room temperature; the third stage, aging at 640-660 ℃ for 200-220 minutes, cooling to room temperature; and the fourth stage, aging at 780-790 deg.C for 420-450 min, and cooling to room temperature.
The antibacterial stainless steel comprises the following components in percentage by mass: 0.040-0.065%, Si: 0.35-0.50%, Cu: 2.60-3.10%, Mo: 0.20-0.35%, Cr: 18.3-19.0%, Mn: 1.2-2.0%, S: 0.002-0.004%, P: 0.003 to 0.005%, Ni: 8.0 to 9.0 percent; the balance being iron and unavoidable impurities.
Preferably, the antibacterial stainless steel contains, by mass, C: 0.045-0.055%, Si: 0.45-0.49%, Cu: 2.66-2.70%, Mo: 0.25-0.29%, Cr: 18.8 to 19.0%, Mn: 1.6-2.0%, S: 0.002-0.003%, P: 0.003-0.004%, Ni: 8.3 to 8.8 percent; the balance being iron and unavoidable impurities.
Compared with the prior art, the invention has the following advantages: in order to solve the problems of corrosion resistance performance of the existing copper-containing antibacterial stainless steel, the invention provides a corrosion resistance treatment method of the antibacterial stainless steel, wherein the addition amount of copper element is reduced in the chemical components of the stainless steel, and molybdenum element is added at the same time, so that the effect of stabilizing the chemical components of the stainless steel matrix is achieved, the precipitation of copper phase is reduced, the corrosion resistance comprehensive performance of the copper-containing stainless steel is improved by researching the influence of failure temperature, heating speed, time and the like on the corrosion resistance performance of the stainless steel, and the antibacterial effect of the copper element is fully exerted. The invention effectively solves the problems of the existing copper-containing antibacterial stainless steel that the mechanical structure of the stainless steel is reduced and the corrosion resistance is poor due to high copper content, and improves the application value of the copper-containing antibacterial stainless steel.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described with reference to specific embodiments, and it should be understood that the specific embodiments described herein are only used for explaining the present invention and are not used for limiting the technical solutions provided by the present invention.
Example 1
The corrosion resisting treatment process of antiseptic stainless steel includes the following steps:
(1) firstly, performing solution quenching on antibacterial stainless steel: rapidly heating to 1085 ℃ at the speed of 33 ℃/min, carrying out solid solution for 26 min, and carrying out water cooling;
(2) then carrying out staged aging treatment: the first stage, aging at 420 deg.C for 18 minutes, cooling to room temperature; in the second stage, aging is carried out for 70 minutes at 480 ℃, and the temperature is cooled to room temperature; the third stage, ageing at 640 deg.c for 200 min and cooling to room temperature; and in the fourth stage, aging is carried out for 420 minutes at 780 ℃ and cooling is carried out to room temperature.
The antibacterial stainless steel comprises the following components in percentage by mass: 0.040%, Si: 0.35%, Cu: 2.60%, Mo: 0.20%, Cr: 18.3%, Mn: 1.2%, S: 0.002%, P: 0.003%, Ni: 8.0 percent; the balance being iron and unavoidable impurities.
Corrosion resistance: the prepared stainless steel is processed into a sample with the size of 15 mm multiplied by 5 mm and 3 mm, the sample is soaked in a boiling HCl solution with the mass concentration of 1 percent for 3 hours, and the corrosion rate is measured to be 0.13g/m2.h。
Other properties: the tensile strength is 537MPa, and the yield strength is 385 MPa.
Example 2
The corrosion resisting treatment process of antiseptic stainless steel includes the following steps:
(1) firstly, performing solution quenching on antibacterial stainless steel: rapidly heating to 1088 ℃ at the speed of 33.5 ℃/min, carrying out solid solution for 27 min, and carrying out water cooling;
(2) then carrying out staged aging treatment: the first stage, aging at 425 deg.C for 19 min, cooling to room temperature; in the second stage, aging is carried out for 75 minutes at 490 ℃, and the temperature is cooled to room temperature; the third stage, aging at 650 deg.C for 210 min, cooling to room temperature; and in the fourth stage, aging is carried out for 435 minutes at 785 ℃ and cooling is carried out to room temperature.
The antibacterial stainless steel comprises the following components in percentage by mass: 0.050%, Si: 0.46%, Cu: 2.68%, Mo: 0.27%, Cr: 18.9%, Mn: 1.8%, S: 0.0025%, P: 0.0035%, Ni: 8.5 percent; the balance being iron and unavoidable impurities.
Corrosion resistance: the prepared stainless steel is processed into a sample with the size of 15 mm multiplied by 5 mm and 3 mm, the sample is soaked in a boiling HCl solution with the mass concentration of 1 percent for 3 hours, and the corrosion rate is measured to be 0.11g/m2.h。
Other properties: tensile strength 539MPa, yield strength 386 MPa.
Example 3
The corrosion resisting treatment process of antiseptic stainless steel includes the following steps:
(1) firstly, performing solution quenching on antibacterial stainless steel: rapidly heating to 1090 ℃ at the speed of 34 ℃/min, carrying out solid solution for 28 min, and carrying out water cooling;
(2) then carrying out staged aging treatment: the first stage, aging at 430 ℃ for 20 minutes, and cooling to room temperature; in the second stage, aging is carried out for 80 minutes at 500 ℃, and the temperature is cooled to room temperature; the third stage, aging at 660 ℃ for 220 minutes, and cooling to room temperature; and in the fourth stage, ageing is carried out at 790 ℃ for 450 minutes, and the temperature is cooled to room temperature.
The antibacterial stainless steel comprises the following components in percentage by mass: 0.065%, Si: 0.50%, Cu: 3.10%, Mo: 0.35%, Cr: 19.0%, Mn: 2.0%, S: 0.004%, P: 0.005%, Ni: 9.0 percent; the balance being iron and unavoidable impurities.
Corrosion resistance: the prepared stainless steel is processed into a sample with the size of 15 mm multiplied by 5 mm and 3 mm, the sample is soaked in a boiling HCl solution with the mass concentration of 1 percent for 3 hours, and the corrosion rate is measured to be 0.14g/m2.h。
Other properties: tensile strength 535MPa, yield strength 382 MPa.
Control group
An antibacterial stainless steel comprises, by mass, C: 0.040%, Si: 0.35%, Cu: 5.5%, Cr: 19.0%, Mn: 1.2%, S: 0.002%, P: 0.003%, Ni: 9.0 percent; the balance of iron and unavoidable impurities; the heat treatment method of the stainless steel comprises the steps of preserving heat for 6 hours in a heat preservation furnace at 750 ℃, taking out, and cooling to room temperature in air.
Corrosion resistance: the prepared stainless steel is processed into a sample with the size of 15 mm multiplied by 5 mm and 3 mm, the sample is soaked in a boiling HCl solution with the mass concentration of 1 percent for 3 hours, and the corrosion rate is measured to be 0.65g/m2.h。
Other properties: tensile strength 512MPa, yield strength 366 MPa.
Claims (2)
1. The corrosion-resistant treatment method of the antibacterial stainless steel is characterized by comprising the following steps:
(1) firstly, performing solution quenching on antibacterial stainless steel: rapidly heating to 1085-1090 ℃ at the speed of 33-34 ℃/min, carrying out solid solution for 26-28 min, and carrying out water cooling;
(2) then carrying out staged aging treatment: the first stage, aging at 420-430 deg.C for 18-20 min, cooling to room temperature; the second stage, aging at 480-500 deg.C for 70-80 min, cooling to room temperature; the third stage, aging at 640-660 ℃ for 200-220 minutes, cooling to room temperature; a fourth stage, aging at 780-790 ℃ for 420-450 minutes, and cooling to room temperature;
the antibacterial stainless steel comprises the following components in percentage by mass: 0.040-0.065%, Si: 0.35-0.50%, Cu: 2.60-3.10%, Mo: 0.20-0.35%, Cr: 18.3-19.0%, Mn: 1.2-2.0%, S: 0.002-0.004%, P: 0.003 to 0.005%, Ni: 8.0 to 9.0 percent; the balance being iron and unavoidable impurities.
2. The method for corrosion-resistant treatment of an antibacterial stainless steel according to claim 1, wherein the antibacterial stainless steel contains, in mass percent, C: 0.045-0.055%, Si: 0.45-0.49%, Cu: 2.66-2.70%, Mo: 0.25-0.29%, Cr: 18.8 to 19.0%, Mn: 1.6-2.0%, S: 0.002-0.003%, P: 0.003-0.004%, Ni: 8.3 to 8.8 percent; the balance being iron and unavoidable impurities.
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| CN202011420892.2A CN112458258A (en) | 2020-12-08 | 2020-12-08 | Corrosion-resistant treatment method for antibacterial stainless steel |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11256284A (en) * | 1998-03-13 | 1999-09-21 | Nisshin Steel Co Ltd | Ferritic stainless steel excellent in antibacterial characteristic |
| CN1504588A (en) * | 2002-12-04 | 2004-06-16 | 中国科学院金属研究所 | Austenic antibiotic stainless steel |
| CN1690240A (en) * | 2001-05-15 | 2005-11-02 | 日新制钢株式会社 | Ferritic and martensitic stainless steels excellent in machinability |
| CN102234739A (en) * | 2010-04-21 | 2011-11-09 | 中国科学院金属研究所 | Anti-infection medical stainless steel |
| JP2014141735A (en) * | 2012-12-26 | 2014-08-07 | Nippon Steel & Sumikin Stainless Steel Corp | Ferritic stainless steel sheet excellent in antibacterial property and manufacturing method thereof |
-
2020
- 2020-12-08 CN CN202011420892.2A patent/CN112458258A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11256284A (en) * | 1998-03-13 | 1999-09-21 | Nisshin Steel Co Ltd | Ferritic stainless steel excellent in antibacterial characteristic |
| CN1690240A (en) * | 2001-05-15 | 2005-11-02 | 日新制钢株式会社 | Ferritic and martensitic stainless steels excellent in machinability |
| CN1504588A (en) * | 2002-12-04 | 2004-06-16 | 中国科学院金属研究所 | Austenic antibiotic stainless steel |
| CN102234739A (en) * | 2010-04-21 | 2011-11-09 | 中国科学院金属研究所 | Anti-infection medical stainless steel |
| JP2014141735A (en) * | 2012-12-26 | 2014-08-07 | Nippon Steel & Sumikin Stainless Steel Corp | Ferritic stainless steel sheet excellent in antibacterial property and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 庞慧芳等: "时效对 17-4PH 马氏体不锈钢抗应力腐蚀性能的影响", 《金属热处理》 * |
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