CN103667978A - Preparation method of antibacterial austenitic stainless steel band - Google Patents
Preparation method of antibacterial austenitic stainless steel band Download PDFInfo
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- CN103667978A CN103667978A CN201210328795.XA CN201210328795A CN103667978A CN 103667978 A CN103667978 A CN 103667978A CN 201210328795 A CN201210328795 A CN 201210328795A CN 103667978 A CN103667978 A CN 103667978A
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Abstract
The invention discloses a preparation method of an antibacterial austenitic stainless steel band. The stainless steel consists of the following components in percentage by weight: 0.05-0.08% of C, 4.4-4.8% of Mn, 14.5-15.5% of Cr, 5.5-6.5% of Ni, 1.0-1.2% of Cu, 0.4-0.6% of Ag, 1.2-1.4% of Si, less than or equal to 0.025% of S, less than or equal to 0.060% of P, 0.5-0.7% of Ce, 0.2-0.4% of Ti and the balance of Fe and unavoidable impurity elements. The preparation method comprises the following steps: (1) smelting; (2) cogging; (3) hot rolling; (4) cold rolling and annealing; (5) solid solution and aging treatment: firstly preserving heat at 1,200-1,220 DEG C for 1-2 hours, and performing air cooling to room temperature; then performing aging treatment: preserving heat at 620-630 DEG C for 6-8 hours, and performing air cooling to room temperature.
Description
Technical field
The present invention relates to ferrous materials processing technique field, particularly a kind of preparation method of austenic stainless steel belt.
Background technology
Anti-bacteria stainless steel, in stainless steel, add exactly the appropriate metallic element with antibacterial effect (as copper, silver), the steel of producing are after antibacterial heat-treatment, and the antibacterial of rich antiseptic elements separated out from matrix, and even dispersion distributes, be exposed to the water-soluble rear formation hydrated ion of antibacterial metal of stainless steel surface, then contact with bacterium, by with cytosis, damaging cells film, make protein coagulating or damage its DNA, stop bacterial growth breeding or eliminating bacteria.Anti-bacteria stainless steel has stainless advantage and good antimicrobial property, can be widely used in the fields such as electrical home appliances, galley equipment, foodstuffs industry, medical device, communal facility.Along with the enhancing of Chinese society expanding economy and antibacterial consciousness, the raising of people's living standard, the development and application scope of anti-bacteria stainless steel will constantly expand.
A Japan day new system steel company drops into the stainless research and development of copper-bearing antibacterial as far back as nineteen ninety-five, and the initial stage, developing focus was in technology such as alloy designs and surface treatments.Successfully develop the ferritic series anti-bacteria stainless steel (low C, N-17Cr-1.5Cu) with good manufacture processibility and germ resistance the end of the year 1999.Along with the continuous growth of anti-bacteria stainless steel demand and the expanding day of range of application, martensitic (0.3C-13Cr-3Cu) and austenite anti-bacteria stainless steel (18Cr-9Ni-3.8Cu) have in succession been developed again.At the beginning of 2000, Kawasaki Steel company develops silver-containing antibacterial stainless steel and puts on market.At present, domestic and international many experts have started the research and development of antibacterial metallic materials and goods.2003, anti-corrosion and anti-bacteria stainless steel anti-microbial property of having concurrently of Chinese Academy of Sciences metal Research Institute exploitation was filled up domestic blank, has reached same type of material international most advanced level.It is reported, Korea S, the U.S., Canada and China Taiwan are also at active development anti-bacteria stainless steel material.
The anti-bacteria stainless steel of exploitation was main mainly with adding copper in the past, the stainless need of production of copper-bearing antibacterial increases special thermal treatment process, and the copper of high level can make material when continuous casting and rolling, form tiny crack tendency, therefore when smelting, the addition of copper is subject to strict restriction, and its germ resistance is also affected.The stainless production of silver-containing antibacterial does not need to increase special thermal treatment process, and hot-forming property is good, producing feasibility strong, long acting antibiotic is good, its cost is substantially suitable with copper-bearing antibacterial stainless steel.Therefore, the stainless development potentiality of silver-containing antibacterial is huge, is the emphasis of following anti-bacteria stainless steel research and development and production.But Ag solubleness in stainless steel is very little, easily forms segregation, thereby reduced germ resistance.If add-on is too much, can destroys stainless original processing characteristics, mechanics and the performance such as corrosion-resistant, and increase cost.Therefore how to make Ag element be uniformly distributed in stainless steel be the gordian technique containing Ag anti-bacteria stainless steel in research.
In publication number CN1272889A patent, exploitation containing containing in Ag anti-bacteria stainless steel: the chromium that 10% (weight) is above, the Ag of 0.001～0.30% (weight), or also contain the vanadium of 0.001～1.0% (weight).In addition, be dispersed with more than 0.0005% silver suboxide in stainless steel, this silver suboxide is silver content below 1.1 times.For silver suboxide is dispersed in stainless steel, when carrying out the continuous casting of molten steel, continuous casting speed is preferentially at 0.8～1.6 m/min.In publication number CN1256716A patent, also there is similar method, its composition is: the chromium that 10% (weight) is above, the Ag of 0.001～1% (weight), or further contain be selected from Sn:0.0002～0.02% (weight), Zn:0.002～0.02% (weight), Pt:0.0002～0.02% (weight) more than a kind or a kind, in addition, make a kind in silver particles, silver oxide and the silver-colored sulfide below average out to 500 μ m to be scattered in above in this stainless steel, it is more than 0.001% adding up to area occupation ratio.In order to make silver particles, silver oxide and silver-colored sulfide dispersed, continuous casting speed is at 0.8～1.6 m/min.Visible, the gordian technique of these two patents is to control continuous casting speed, silver particles and patina thing is distributed in alloy equably, to obtain the object of high antibiotic rate.So just require certain smelting and continuous casting installation for casting and skilled Gou operative technique.
In publication number CN1789471A patent, developed a kind of elder generation tri-kinds of elements of Cu-Ag-Zn have been made to master alloy through melting by a certain percentage, then it has been used as to a kind of furnace charge, in stainless steel smelting, add to make anti-bacteria stainless steel.This method effect is more satisfactory, but the optimal components of Cu-Ag-Zn ternary master alloy is difficult for grasp, and Zn also can produce detrimentally affect to stainless hot workability in addition.
Summary of the invention
For the deficiencies in the prior art, one of object of the present invention is to provide a kind of preparation method of antibacterial austenic stainless steel belt.
For achieving the above object, the technical solution used in the present invention is as follows:
A preparation method for antibacterial austenic stainless steel belt, described stainless steel is comprised of following component by weight percentage: C:0.05-0.08, Mn:4.4-4.8, Cr:14.5-15.5, Ni:5.5-6.5, Cu:1.0-1.2, Ag:0.4-0.6, Si:1.2-1.4, S≤0.025, P≤0.060, Ce:0.5-0.7, Ti:0.2-0.4, all the other are Fe and inevitable impurity element, described preparation method comprises the steps:
(1) smelt: with iron alloy raw materials such as steel scrap, sponge iron, ferromanganese, ferrochrome, ferronickel, ferrosilicon, adopt the smelting technology of electric arc furnace+converter+external refining to smelt, in smelting process, guarantee that the harmful elements such as S, P are within above-mentioned scope, the smelting later stage adds copper silver master alloy under the prerequisite that guarantees other composition, guarantee that copper and silver-colored content meet mentioned component scope, then adopt ferrocerium and ferrotianium to process 10-15 minute, after tapping, molten steel ladle needs Argon stirring within 20-25 minute, to make each chemical composition even, and final molten steel continuous casting becomes base;
(2) cogging: strand adopts hammer cogging, and the Heating temperature of strand is 1150-1190 ℃, and final forging temperature is greater than 970 ℃, blank slow cooling after forging;
(3) hot rolling: the blank after forging is heated to 1160-1180 ℃ through process furnace, becomes band steel through multi-pass rolling, and finishing temperature is greater than 930 ℃, and air cooling is to room temperature;
(4) cold rolling and annealing: steel band after hot rolling adopts after continuous annealing pickling, cold rolling through multi-pass, is rolled to specific thickness, the steel band after cold rolling needs annealed, cleanup acid treatment again, and annealing temperature remains 950-970 ℃.
(5) solid solution and ageing treatment: first under 1200-1220 ℃ of condition, be incubated 1-2 hour, air cooling is to room temperature afterwards; Then ageing treatment: at 620-630 ℃ of insulation 6-8 hour, then air cooling is to room temperature.
The present invention has following beneficial effect:
(1) the present invention is optimized design to stainless chemical composition, adopt orthogonal test, filter out best Cu and the content range of Ag, consider the over-all propertieies such as solidity to corrosion and mechanical property simultaneously, filter out the optimum content scope of alloy element Mn, Cr, Ni, Si, Ce and Ti, the technique effect that each alloy element is played is mutually collaborative, makes this stainless performance best.
(2) of the present inventionly through after hot rolling and cold-rolling treatment, then carry out solid solution and ageing treatment, thereby separate out nanometer ε～Cu phase, guarantee its anti-microbial property.
(3) stainless steel of the present invention has kept the good mechanical property of original steel grade and corrosion resistance, and has good broad spectrum antibacterial performance, can suppress and kill various common bacteriums, and effect is lasting.
Embodiment
Embodiment mono-
A preparation method for antibacterial austenic stainless steel belt, described stainless steel is comprised of following component by weight percentage: C:0.05, Mn:4.8, Cr:14.5, Ni:6.5, Cu:1.0, Ag:0.6, Si:1.2, S≤0.025, P≤0.060, Ce:0.7, Ti:0.2, all the other are Fe and inevitable impurity element, described preparation method comprises the steps:
(1) smelt: with iron alloy raw materials such as steel scrap, sponge iron, ferromanganese, ferrochrome, ferronickel, ferrosilicon, adopt the smelting technology of electric arc furnace+converter+external refining to smelt, in smelting process, guarantee that the harmful elements such as S, P are within above-mentioned scope, the smelting later stage adds copper silver master alloy under the prerequisite that guarantees other composition, guarantee that copper and silver-colored content meet mentioned component scope, then adopt ferrocerium and ferrotianium to process 10 minutes, after tapping, molten steel ladle needs Argon stirring within 25 minutes, to make each chemical composition even, and final molten steel continuous casting becomes base;
(2) cogging: strand adopts hammer cogging, and the Heating temperature of strand is 1150 ℃, and final forging temperature is greater than 970 ℃, blank slow cooling after forging;
(3) hot rolling: the blank after forging is heated to 1160 ℃ through process furnace, becomes band steel through multi-pass rolling, and finishing temperature is greater than 930 ℃, and air cooling is to room temperature;
(4) cold rolling and annealing: steel band after hot rolling adopts after continuous annealing pickling, cold rolling through multi-pass, is rolled to specific thickness, the steel band after cold rolling needs annealed, cleanup acid treatment again, and annealing temperature remains 950 ℃.
(5) solid solution and ageing treatment: first under 1200 ℃ of conditions, be incubated 2 hours, air cooling is to room temperature afterwards; Then ageing treatment: 620 ℃ of insulations 8 hours, then air cooling was to room temperature.
Embodiment bis-
A preparation method for antibacterial austenic stainless steel belt, described stainless steel is comprised of following component by weight percentage: C:0.08, Mn:4.4, Cr:15.5, Ni:5.5, Cu:1.2, Ag:0.4, Si:1.4, S≤0.025, P≤0.060, Ce:0.5, Ti:0.4, all the other are Fe and inevitable impurity element, described preparation method comprises the steps:
(1) smelt: with iron alloy raw materials such as steel scrap, sponge iron, ferromanganese, ferrochrome, ferronickel, ferrosilicon, adopt the smelting technology of electric arc furnace+converter+external refining to smelt, in smelting process, guarantee that the harmful elements such as S, P are within above-mentioned scope, the smelting later stage adds copper silver master alloy under the prerequisite that guarantees other composition, guarantee that copper and silver-colored content meet mentioned component scope, then adopt ferrocerium and ferrotianium to process 15 minutes, after tapping, molten steel ladle needs Argon stirring within 20 minutes, to make each chemical composition even, and final molten steel continuous casting becomes base;
(2) cogging: strand adopts hammer cogging, and the Heating temperature of strand is 1190 ℃, and final forging temperature is greater than 970 ℃, blank slow cooling after forging;
(3) hot rolling: the blank after forging is heated to 1180 ℃ through process furnace, becomes band steel through multi-pass rolling, and finishing temperature is greater than 930 ℃, and air cooling is to room temperature;
(4) cold rolling and annealing: steel band after hot rolling adopts after continuous annealing pickling, cold rolling through multi-pass, is rolled to specific thickness, the steel band after cold rolling needs annealed, cleanup acid treatment again, and annealing temperature remains 950-970 ℃.
(5) solid solution and ageing treatment: first under 1220 ℃ of conditions, be incubated 1 hour, air cooling is to room temperature afterwards; Then ageing treatment: 630 ℃ of insulations 6 hours, then air cooling was to room temperature.
Embodiment tri-
A preparation method for antibacterial austenic stainless steel belt, described stainless steel is comprised of following component by weight percentage: C:0.07, Mn:4.6, Cr:15.0, Ni:6.0, Cu:1.1, Ag:0.5, Si:1.3, S≤0.025, P≤0.060, Ce:0.6, Ti:0.3, all the other are Fe and inevitable impurity element, described preparation method comprises the steps:
(1) smelt: with iron alloy raw materials such as steel scrap, sponge iron, ferromanganese, ferrochrome, ferronickel, ferrosilicon, adopt the smelting technology of electric arc furnace+converter+external refining to smelt, in smelting process, guarantee that the harmful elements such as S, P are within above-mentioned scope, the smelting later stage adds copper silver master alloy under the prerequisite that guarantees other composition, guarantee that copper and silver-colored content meet mentioned component scope, then adopt ferrocerium and ferrotianium to process 12 minutes, after tapping, molten steel ladle needs Argon stirring within 22 minutes, to make each chemical composition even, and final molten steel continuous casting becomes base;
(2) cogging: strand adopts hammer cogging, and the Heating temperature of strand is 1170 ℃, and final forging temperature is greater than 970 ℃, blank slow cooling after forging;
(3) hot rolling: the blank after forging is heated to 117 ℃ through process furnace, becomes band steel through multi-pass rolling, and finishing temperature is greater than 930 ℃, and air cooling is to room temperature;
(4) cold rolling and annealing: steel band after hot rolling adopts after continuous annealing pickling, cold rolling through multi-pass, is rolled to specific thickness, the steel band after cold rolling needs annealed, cleanup acid treatment again, and annealing temperature remains 960 ℃.
(5) solid solution and ageing treatment: first under 1210 ℃ of conditions, be incubated 1.5 hours, air cooling is to room temperature afterwards; Then ageing treatment: 625 ℃ of insulations 7 hours, then air cooling was to room temperature.
Applicant's statement, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to the selection of the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, concrete mode etc., within all dropping on protection scope of the present invention and open scope.
Claims (1)
1. a preparation method for antibacterial austenic stainless steel belt, is characterized in that, described stainless steel is comprised of following component by weight percentage: C:0.05-0.08, Mn:4.4-4.8, Cr:14.5-15.5, Ni:5.5-6.5, Cu:1.0-1.2, Ag:0.4-0.6, Si:1.2-1.4, S≤0.025, P≤0.060, Ce:0.5-0.7, Ti:0.2-0.4, all the other are Fe and inevitable impurity element, and described preparation method comprises the steps:
(1) smelt: with iron alloy raw materials such as steel scrap, sponge iron, ferromanganese, ferrochrome, ferronickel, ferrosilicon, adopt the smelting technology of electric arc furnace+converter+external refining to smelt, in smelting process, guarantee that the harmful elements such as S, P are within above-mentioned scope, the smelting later stage adds copper silver master alloy under the prerequisite that guarantees other composition, guarantee that copper and silver-colored content meet mentioned component scope, then adopt ferrocerium and ferrotianium to process 10-15 minute, after tapping, molten steel ladle needs Argon stirring within 20-25 minute, to make each chemical composition even, and final molten steel continuous casting becomes base;
(2) cogging: strand adopts hammer cogging, and the Heating temperature of strand is 1150-1190 ℃, and final forging temperature is greater than 970 ℃, blank slow cooling after forging;
(3) hot rolling: the blank after forging is heated to 1160-1180 ℃ through process furnace, becomes band steel through multi-pass rolling, and finishing temperature is greater than 930 ℃, and air cooling is to room temperature;
(4) cold rolling and annealing: steel band after hot rolling adopts after continuous annealing pickling, cold rolling through multi-pass, is rolled to specific thickness, the steel band after cold rolling needs annealed, cleanup acid treatment again, and annealing temperature remains 950-970 ℃.
(5) solid solution and ageing treatment: first under 1200-1220 ℃ of condition, be incubated 1-2 hour, air cooling is to room temperature afterwards; Then ageing treatment: at 620-630 ℃ of insulation 6-8 hour, then air cooling is to room temperature.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103911540A (en) * | 2014-03-29 | 2014-07-09 | 广西大学 | Preparation method of thermal-treatment-free copper-contained alloy antibacterial stainless steel |
| CN105057917A (en) * | 2015-08-14 | 2015-11-18 | 中国科学院金属研究所 | Austenitic stainless steel welding wire having antibacterial function |
| CN106756613A (en) * | 2016-12-16 | 2017-05-31 | 安徽宝恒新材料科技有限公司 | A kind of anti-bacteria stainless steel |
| CN107058902A (en) * | 2017-04-17 | 2017-08-18 | 柳州市淦兴金属制品有限公司 | A kind of anti-bacteria stainless steel and preparation method thereof and application |
| CN109023147A (en) * | 2018-09-05 | 2018-12-18 | 合肥久新不锈钢厨具有限公司 | A kind of resistance to hydrochlorate corrosion stainless steel and its application |
| CN110735020A (en) * | 2019-10-29 | 2020-01-31 | 深圳万佳互动科技有限公司 | Heat treatment method of low-carbon steel structural parts |
| CN112251745A (en) * | 2020-10-20 | 2021-01-22 | 西安工程大学 | Preparation method of antibacterial stainless steel cutter with nano titanium nitride coating |
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2012
- 2012-09-06 CN CN201210328795.XA patent/CN103667978A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103911540A (en) * | 2014-03-29 | 2014-07-09 | 广西大学 | Preparation method of thermal-treatment-free copper-contained alloy antibacterial stainless steel |
| CN103911540B (en) * | 2014-03-29 | 2015-12-09 | 广西大学 | A kind of preparation method without the need to heat treated copper-bearing alloy type anti-bacteria stainless steel |
| CN105057917A (en) * | 2015-08-14 | 2015-11-18 | 中国科学院金属研究所 | Austenitic stainless steel welding wire having antibacterial function |
| CN106756613A (en) * | 2016-12-16 | 2017-05-31 | 安徽宝恒新材料科技有限公司 | A kind of anti-bacteria stainless steel |
| CN107058902A (en) * | 2017-04-17 | 2017-08-18 | 柳州市淦兴金属制品有限公司 | A kind of anti-bacteria stainless steel and preparation method thereof and application |
| CN109023147A (en) * | 2018-09-05 | 2018-12-18 | 合肥久新不锈钢厨具有限公司 | A kind of resistance to hydrochlorate corrosion stainless steel and its application |
| CN110735020A (en) * | 2019-10-29 | 2020-01-31 | 深圳万佳互动科技有限公司 | Heat treatment method of low-carbon steel structural parts |
| CN110735020B (en) * | 2019-10-29 | 2021-04-09 | 浙江天基重工机械有限公司 | Heat treatment method of low-carbon steel structural member |
| CN112251745A (en) * | 2020-10-20 | 2021-01-22 | 西安工程大学 | Preparation method of antibacterial stainless steel cutter with nano titanium nitride coating |
| CN112251745B (en) * | 2020-10-20 | 2023-03-24 | 西安工程大学 | Preparation method of antibacterial stainless steel cutter with nano titanium nitride coating |
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Application publication date: 20140326 |