CN102560281B - Preparation method of martensitic stainless steel having broad-spectrum antimicrobial effects - Google Patents
Preparation method of martensitic stainless steel having broad-spectrum antimicrobial effects Download PDFInfo
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Abstract
The invention discloses a preparation method of martensitic stainless steel having broad-spectrum antimicrobial effects. The preparation method provided by the invention is characterized by comprising the following steps of 1, before smelting, melting Ag and Cu into an intermediate alloy according to ratios and adding the intermediate alloy as an auxiliary material into raw metals, 2, carrying out smelting by an electric furnace-AOD-VOD and carrying out pouring, 3, carrying out hot rolling, carrying out annealing at a temperature of 860 to 880 DEG C, carrying out cold rolling, carrying out annealing at a temperature of 1030 to 1050 DEG C, and carrying out acid-washing and polishing, and 4, carrying out antibacterial treatment through carrying out heat preservation at a temperature of 1160 to 1180 DEG C for 1 to 2 hours and cooling in air to a room temperature, and carrying out aging treatment through carrying out heat preservation at a temperature of 530 to 550 DEG C for 8 to 10 hours for aging treatment and cooling in air.
Description
Technical field
The present invention relates to the ferrous metallurgy field, particularly a kind of preparation method of Martensite Stainless Steel.
Background technology
Stainless steel came out from last century, till now the history in existing more than 90 year.Stainless invention is a significant achievement on world's history of metallurgy, and stainless production has been established important material technological foundation for industrial and scientific-technical progress.It has progressively formed ferrite type stainless steel, martensite type stainless steel, Austenitic stainless steel, austenite～ferrite type duplex stainless steel four big classes in evolution.
As everyone knows, silver, copper have restraining effect to the growth of bacterium, just are used as drinking vessel and medical instruments before 1000 Christian eras.The incomparable superiority of other material that stainless steel itself has makes people rise the research of anti-bacteria stainless steel to cupric, silver in the nineties in 20th century.Japan in this area research starting early.JP849085A discloses by magnetron sputtering technique and has formed the metal level of Cr, the Ti, Ni or the Fe that contain silver and/or copper or the anti-bacteria stainless steel plate of alloy layer on the surface of stainless steel base material.
CN1111612C discloses the manufacture method of silver containing stainless steel, separates out median size 500 μ m following silver particles, silver oxide and silver-colored sulfide in the stainless steel by adding 0.0001～1% silver and anneal under 700～1180 ℃ of temperature, making.
Disclose antibacterial member of making by ferritic stainless steel and preparation method thereof among the CN 1072732C, improved stainless germ resistance by copper that adds 0.4～3 weight % and the copper-rich phase of separating out with the ratio of 2.0 volume %.In this patent, also mentioned the preparation method of the Martensite Stainless Steel of cupric 0.4～3 weight %, separated out the anti-microbial property that copper-rich phase improves Martensite Stainless Steel by 500～900 ℃ of annealing after hot rolling.General Martensite Stainless Steel goods must obtain higher hardness to satisfy service requirements through quenching and tempering before use, but in this patent only in the martensitic stainless steel of anneal copper-rich phase solid solution again will take place in follow-up quenching, and can cause antibiotic rate to descend thus even disappear.And, do not show rapidity, persistence and the broad spectrum antibacterial of its anti-microbial property in this patent.
Summary of the invention
At the deficiencies in the prior art, one of purpose of the present invention is to provide a kind of preparation method with Martensite Stainless Steel of broad-spectrum antibacterial action, and this stainless steel has favorable mechanical performance and corrosion resistance nature preferably simultaneously.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of preparation method with Martensite Stainless Steel of broad-spectrum antibacterial action, it is characterized in that, this stainless steel is made up of following component in per-cent (weight): C:0.1～0.3%, Si:0.6～0.8%, Mn:1.6～1.8%, P≤0.04%, S≤0.03%, Cr:13～15%, Ni:0.5～0.7%, Cu:2.2～2.4%, Ag:0.2～0.4%, Ti:1.3～1.5%, V:0.4～0.6%, Zr:0.2～0.4%, Mo:3.4～3.6%, surplus are Fe and unavoidable impurities, and described preparation method comprises:
1. prepare master alloy: before smelting, earlier Ag and two kinds of elements of Cu are made master alloy according to the melting of above-mentioned interpolation proportioning, more described master alloy is added as a kind of batching;
2. smelt: adopt electric furnace-AOD-VOD to smelt, and cast;
3. rolling: carry out hot rolling earlier, then earlier through about 860～880 ℃ of annealing, carry out again cold rolling, then in about 1030～1050 ℃ of annealing, pickling, polishing.
4. antibioticization processing: at first be incubated 1～2 hour under about 1160～1180 ℃ of conditions, air cooling is to room temperature afterwards; Ageing treatment then: about 530～550 ℃ of insulations 8～10 hours, air cooling was to room temperature then.
Beneficial effect of the present invention is:
(1) the present invention has carried out optimization design to stainless chemical ingredients, adopt orthogonal test, filter out best Cu and the content range of Ag, consider over-all propertieies such as solidity to corrosion and mechanical property simultaneously, filter out the optimum content scope of alloy element Si, Mn, Cr, Ni, Ti, Zr, V and Mo, make technique effect that each alloy element played collaborative mutually, make performance the best of this antibacterial martensitic stainless steel.
(2) of the present inventionly carry out solid solution and ageing treatment then, guarantee its anti-microbial property mutually thereby separate out nanometer ε～Cu through after hot rolling and the cold-rolling treatment.
(3) stainless steel of the present invention has kept original steel grade excellent mechanical property and corrosion resistance, and has good broad spectrum antibacterial performance, can suppress and kill various common bacteriums, and effect is lasting.
Embodiment
Embodiment one
A kind of preparation method with Martensite Stainless Steel of broad-spectrum antibacterial action, this stainless steel is made up of following component in per-cent (weight): C:0.1%, Si:0.8%, Mn:1.6%, P≤0.04%, S≤0.03%, Cr:15%, Ni:0.5%, Cu:2.4%, Ag:0.2%, Ti:1.5%, V:0.4%, Zr:0.4%, Mo:3.4%, surplus is Fe and unavoidable impurities, and described preparation method comprises:
1. prepare master alloy: before smelting, earlier Ag and two kinds of elements of Cu are made master alloy according to the melting of above-mentioned interpolation proportioning, more described master alloy is added as a kind of batching;
2. smelt: adopt electric furnace-AOD-VOD to smelt, and cast;
3. rolling: carry out hot rolling earlier, then earlier through 860 ℃ of annealing, carry out again cold rolling, then in 1050 ℃ of annealing, pickling, polishing.
4. antibioticization processing: at first be incubated 2 hours under 1160 ℃ of conditions, air cooling is to room temperature afterwards; Ageing treatment then: 530 ℃ of insulations 10 hours, air cooling was to room temperature then.
Embodiment two
A kind of preparation method with Martensite Stainless Steel of broad-spectrum antibacterial action, this stainless steel is made up of following component in per-cent (weight): C:0.3%, Si:0.6%, Mn:1.8%, P≤0.04%, S≤0.03%, Cr:13%, Ni:0.7%, Cu:2.2%, Ag:0.4%, Ti:1.3%, V:0.6%, Zr:0.2%, Mo:3.6%, surplus is Fe and unavoidable impurities, and described preparation method comprises:
1. prepare master alloy: before smelting, earlier Ag and two kinds of elements of Cu are made master alloy according to the melting of above-mentioned interpolation proportioning, more described master alloy is added as a kind of batching;
2. smelt: adopt electric furnace-AOD-VOD to smelt, and cast;
3. rolling: carry out hot rolling earlier, then earlier through 880 ℃ of annealing, carry out again cold rolling, then in 1030 ℃ of annealing, pickling, polishing.
4. antibioticization processing: at first be incubated 1 hour under 1180 ℃ of conditions, air cooling is to room temperature afterwards; Ageing treatment then: 550 ℃ of insulations 8 hours, air cooling was to room temperature then.
Embodiment three
A kind of preparation method with Martensite Stainless Steel of broad-spectrum antibacterial action, this stainless steel is made up of following component in per-cent (weight): C:0.2%, Si:0.7%, Mn:1.7%, P≤0.04%, S≤0.03%, Cr:14%, Ni:0.6%, Cu:2.3%, Ag:0.3%, Ti:1.4%, V:0.5%, Zr:0.3, Mo:3.5%, surplus is Fe and unavoidable impurities, and described preparation method comprises:
1. prepare master alloy: before smelting, earlier Ag and two kinds of elements of Cu are made master alloy according to the melting of above-mentioned interpolation proportioning, more described master alloy is added as a kind of batching;
2. smelt: adopt electric furnace-AOD-VOD to smelt, and cast;
3. rolling: carry out hot rolling earlier, then earlier through 870 ℃ of annealing, carry out again cold rolling, then in 1040 ℃ of annealing, pickling, polishing.
4. antibioticization processing: at first be incubated 1.5 hours under 1170 ℃ of conditions, air cooling is to room temperature afterwards; Ageing treatment then: 540 ℃ of insulations 9 hours, air cooling was to room temperature then.
Applicant's statement, the present invention illustrates detailed process equipment of the present invention and technical process by the foregoing description, but the present invention is not limited to above-mentioned detailed process equipment and technical process, does not mean that promptly the present invention must rely on above-mentioned detailed process equipment and technical process could be implemented.The person of ordinary skill in the field should understand, any improvement in the present invention to the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (1)
1. preparation method with Martensite Stainless Steel of broad-spectrum antibacterial action, it is characterized in that, this stainless steel is made up of following component by weight percentage: C:0.1～0.3%, Si:0.6～0.8%, Mn:1.6～1.8%, P≤0.04%, S≤0.03%, Cr:13～15%, Ni:0.5～0.7%, Cu:2.2～2.4%, Ag:0.2～0.4%, Ti:1.3～1.5%, V:0.4～0.6%, Zr:0.2～0.4%, Mo:3.4～3.6%, surplus are Fe and unavoidable impurities, and described preparation method comprises:
1. prepare master alloy: before smelting, earlier Ag and two kinds of elements of Cu are made master alloy according to the melting of above-mentioned interpolation proportioning, more described master alloy is added as a kind of batching;
2. smelt: adopt electric furnace-AOD-VOD to smelt, and cast;
3. rolling: carry out hot rolling earlier, then earlier through 860～880 ℃ of annealing, carry out again cold rolling, then in 1030～1050 ℃ of annealing, pickling, polishing;
4. antibioticization processing: at first be incubated 1～2 hour under 1160～1180 ℃ of conditions, air cooling is to room temperature afterwards; Ageing treatment then: 530～550 ℃ of insulations 8～10 hours, air cooling was to room temperature then.
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| CN107761008A (en) * | 2017-10-09 | 2018-03-06 | 上海前引科技有限公司 | A kind of antibacterial and mouldproof anion stainless steel and preparation method thereof |
| CN113174544B (en) * | 2021-04-21 | 2022-11-08 | 中国科学院金属研究所 | Superplastic forming nanocrystalline antibacterial martensitic stainless steel and preparation method thereof |
| CN114645117A (en) * | 2022-03-21 | 2022-06-21 | 河南中原特钢装备制造有限公司 | Heat treatment process for 17-4PH material after forging through nitrogen-controlling alloying |
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| CN101205592A (en) * | 2006-12-19 | 2008-06-25 | 中国科学院金属研究所 | Martensitic antibiotic stainless steel and thermal treatment method thereof |
| CN101376949A (en) * | 2007-08-28 | 2009-03-04 | 宝山钢铁股份有限公司 | Martensite antibacterial stainless steel and manufacturing method thereof |
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| JP2001254151A (en) * | 2000-03-10 | 2001-09-18 | Nisshin Steel Co Ltd | Ag-CONTAINING MARTENSITIC STAINLESS STEEL EXCELLENT IN ANTIBACTERIAL PROPERTY AND ITS PRODUCING METHOD |
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| CN101205592A (en) * | 2006-12-19 | 2008-06-25 | 中国科学院金属研究所 | Martensitic antibiotic stainless steel and thermal treatment method thereof |
| CN101376949A (en) * | 2007-08-28 | 2009-03-04 | 宝山钢铁股份有限公司 | Martensite antibacterial stainless steel and manufacturing method thereof |
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| JP特开2001-254151A 2001.09.18 |
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