CN101333626B - Antimicrobial cutery type stainless steel - Google Patents
Antimicrobial cutery type stainless steel Download PDFInfo
- Publication number
- CN101333626B CN101333626B CN2008101177817A CN200810117781A CN101333626B CN 101333626 B CN101333626 B CN 101333626B CN 2008101177817 A CN2008101177817 A CN 2008101177817A CN 200810117781 A CN200810117781 A CN 200810117781A CN 101333626 B CN101333626 B CN 101333626B
- Authority
- CN
- China
- Prior art keywords
- steel
- percent
- stainless steel
- content
- compared
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
The invention belongs to the stainless steel field, in particular to a stainless steel of an antibacterial cutter. The steel comprises the specific chemical constituents (in weight percent) as follows: C: 0.50 to 0.70 percent, Si<=0.40 percent, S<=0.030 percent, P<= 0.030 percent, Mn<=0.40 percent, Mo: 0.10 to 1.00 percent, Cr: 14 to 16 percent, Ni: 0.80 to 1.20 percent, V: 0.05 to 0.50 percent, Nb: 0.05 to 0.15 percent, Ag: 0.035 to 0.10 percent, balance Fe and unavoidable impurities. Compared with the prior art, the stainless steel has the advantages of good antibacterial ability and comprehensive performance; and compared with the current kitchen knives, the steel has the adequate toughness when being used for making kitchen knives and also has rather high hardness and strength, meanwhile, the steel has the antibacterial property, and can meet the user requirements and raise the grade of cutters. The steel has rather high hardness (53.2 to 60HRC) and tensile strength (1780 to 1985MPa), and rather good impact absorbing energy (10.3 to 13J).
Description
Technical field
The invention belongs to the stainless steel field, particularly a kind of antimicrobial cutery type stainless steel.Mainly be applicable to cutter steel such as kitchen knife for kitchen use, scissors, also can be applicable to communal facility, household electrical appliance, medicine equipment, stationery sports goods, daily use Sundry goods with steel etc.
Background technology
Along with expanding economy, the raising of quality of life, the application of stainless steel in daily life more and more widely, people wish stainless steel keep preferably can having in bright and clean imitatively go mouldy, antibiotic, germ-resistant function, stainless steel is had higher requirement.Kitchen knife can keep sharpness and toughness preferably with stainless steel, can have antibacterial again with significant.Hardness is kitchen knife important performance indexes of steel, and its height directly influences the sharpness of cutter, and hardness is high more, and the sharpness of cutter is good more, and is wear-resisting more anti-.At present, the kitchen knife of China mainly uses 3Cr13, the 4Cr13 stainless steel of Cr system with steel.As 3Cr13, the 4Cr13 stainless steel of martensite type, main characteristic is: carbon content height, hardening capacity are good, can obtain martensitic stucture behind general oil quenching or the air cooling, and this steel grade hardness are on the low side, will directly have influence on the sharpness and the wear resistance of cutter.Kai Fa 7Cr17Mo, 8Cr13MoV special steel are better than 3Cr13,4Cr13 material in over-all propertieies such as hardness, toughness in recent years, but these materials do not possess antibacterial again.Adding a certain amount of Ag in the steel can produce good antibacterial property and more and more be subject to people's attention.
Summary of the invention
The purpose of this invention is to provide a kind of have antibacterial ability, the good antimicrobial cutery type stainless steel of over-all properties.
According to above-mentioned purpose, the technical scheme of integral body of the present invention is:
The present invention suitably adjusts the content of C and alloying elements cr on the basis of 4Cr13, adding Mo, V, Nb strengthen matrix, obtain more high rigidity.Add element Ni against corrosion and Cr matched well, produce higher effect against corrosion.Add strong antiseptic elements Ag, produce germ resistance.Make this stainless steel when having good comprehensive performances, have germ resistance, can be used for cutter steel such as high-grade kitchen knife, have good usability and application prospect.
Be specially: (1) adds antiseptic elements Ag makes steel have antibacterial ability; (2) content of C and Cr, Mo, V in the general kitchen knife steel of adjustment; (3) add anti-corrosion element Ni and cooperate the increase solidity to corrosion with Cr, improve processing performance; (4) add a small amount of strong carbide forming element Nb, microalloying produces second to be strengthened mutually, and crystal grain thinning, to improve the wear resistance and the toughness of kitchen knife steel.
According to above-mentioned purpose and whole technical scheme, the concrete technical scheme of the present invention is:
Concrete chemical ingredients of the present invention (weight %) is as follows: C 0.50～0.70%, Si 0.2～0.40%, S≤0.030%, P≤0.030%, Mn 0.21～0.40%, Mo 0.10～1.00%, and Cr 14～16%, Ni0.80～1.20%, V 0.05～0.50%, Nb 0.05～0.15%, and Ag 0.035～0.10%, and all the other are Fe and inevitable impurity.
The effect of above-mentioned each element and proportioning are according to as follows:
C: carbon is the one of the chief elements of industrial steel, and the performance of steel is decided by the content of carbon in steel and the form of distribution thereof to a great extent with being organized in, and the influence of carbon is particularly remarkable in stainless steel.Carbon mainly shows both ways the influence of tissue in stainless steel, carbon is the element of stable austenite on the one hand, and the degree of effect very big (be about nickel 30 times) on the other hand because the avidity of carbon and chromium is very big, forms the carbide of a series of complexity with chromium.So from intensity and corrosion resistant candle performance two aspects, the effect of carbon in stainless steel is mutual contradiction.Carbon content is too high, and carbon can influence erosion resistance with combining of chromium.Carbon content is low excessively, and stainless intensity and hardness are not enough.The present invention is according to the content of chromium and take all factors into consideration intensity and solidity to corrosion determines that carbon content is 0.50～0.70%.
Cr:Cr plays a decisive role in stainless steel, and Cr makes the steel passivation at present and gives good corrosion resistance and the unique element that industrial use value is arranged of rustless property.Cr can also improve the hardening capacity of alloy.The Cr that must contain sufficient amount in the invention steel is anti-corrosion to improve.Therefore control its content 14～16%.
Ni:Ni is good corrosion resistant material, also is the important alloy element of steel alloy.Ni forms austenitic element, but low-carbon (LC) Ni steel will obtain pure austenite structure, and ni content will reach 24%; And the corrosion resistance nature of steel in some medium significantly changed when only containing Ni27%.So Ni can not constitute stainless steel separately.When but Ni and Cr were present in the stainless steel simultaneously, the stainless steel that contains Ni but had many valuable performances.Ni content can not be too high in Martensite Stainless Steel, otherwise because Ni enlarges the γ phase region and reduces the dual function of Ms temperature, will make steel become single-phase austenitic stainless steel and lose quenching capacity.Another vital role of Ni is the delta ferrite level that reduces in the steel, and its effect is best in all alloying elements.In steel of the present invention, control Ni content is 0.80～1.20%.
Mn: add as reductor, content generally is controlled at below 0.40%.In addition, Mn/S 〉=20 in the control steel are beneficial to the thermoplasticity that improves stainless forging, rolls, and obviously reduce base material crackle and improve lumber recovery.
Si: add as deoxidant element, content generally is controlled at below 0.40%.
P:P forms microsegregation when solidification of molten steel, gather partially at crystal boundary when austenitizing temperature heats subsequently, and the fragility of steel is enlarged markedly.The content of control P is below 0.030%, and content is low more good more.
S: inevitable impurity, form FeS, come red brittleness to steel band.Control S content is below 0.030%, and content is low more good more.
Mo:Mo has refinement steel microcosmic crystal grain and reaches the effect of refined crystalline strengthening, improves the intensity of steel, and the resistance to tempering that can improve steel reduces martensitic decomposition when making tempering, keeps hardness.Can form simultaneously the carbide of high rigidity with carbon, be the strengthening phase in the steel, and molybdenum can improve the hardening capacity of the resistance to corrosion of stainless steel in dilute sulphuric acid and dilute hydrochloric acid and raising steel simultaneously.Mo is a ferrite former, promotes α formation ability mutually to be equivalent to Cr.In the martensitic chromium stainless steel, Mo mainly is to improve the intensity and the hardness of steel and strengthen the secondary hardening effect except that the solidity to corrosion of improving steel.Usually Mo content is less than 1% in the martensite chromium steel, and too high Mo amount will promote the formation of delta ferrite to cause some disadvantageous effects.In steel of the present invention, control Mo content is 0.10～1.00%.
The effect that V:V has refined crystalline strengthening and improves resistance to tempering and improve the hardening capacity of material also can form carbide with carbon, and a small amount of V just can form strong carbide with carbon, improves the mechanical property of steel.In steel of the present invention, add a small amount of V and play strengthening effect, content is controlled at 0.05～0.50%.
Nb: the strong carbide forming element, form MC type carbide, can be used to part and substitute V, V content is reduced to the level that only keeps secondary hardening.Utilize Nb to increase MC type carbide in the steel, thereby strengthen the wear resistance of steel.But during the Nb too high levels, then shown the alligatoring to primary grain, carbide particle is thicker.Therefore, Nb content is controlled at 0.05～0.15%.
Ag:Ag is an important antiseptic elements in the steel.Most metal ions all has very strong sterilizing ability, but for the human and animal, the germ resistance of having only some metal ion is a comparison safety, wherein argentiferous the best.Be arranged in order with regard to security and be Ag＞Co＞Ni＞Al＞Zn＞Cu=Fe＞Mn＞Sn＞Ba＞Mg＞Ca.Take all factors into consideration from security and germ resistance, best with the Ag ion.Adding Ag content in the steel of the present invention is 0.035～0.10%.
The preparation method that employing of the present invention is similar to prior art:
Steel of the present invention can adopt electric arc furnace, high frequency furnace, vacuum induction furnace smelting, and molten steel casting becomes steel ingot, can carry out esr as required, through forging become a useful person or cogging after be rolled into rod, wire rod etc.
The present invention compared with prior art has antibacterial ability, the good advantage of over-all properties.Compare with steel with existing kitchen knife, steel of the present invention has germ resistance simultaneously having good hardness and flexible, can meet consumers' demand, and improves the cutter class.Have higher hardness (53.2～60HRC), can satisfy kitchen knife with the impact absorbing energy preferably of steel (10.3～13J), advantages of higher tensile strength (1780～1985MPa).
Embodiment
According to above-mentioned designed chemical ingredients scope, on the 25kg vacuum induction furnace, smelted 3 a stoves steel of the present invention and a stove compared steel 4Cr13, its concrete chemical ingredients is as shown in table 1.Molten steel casting becomes ingot, and makes φ 17mm bar through forging.Behind the steel annealing, be processed into sample, through quench, temper (1000～1100 ℃ of quenchings, 120～180 ℃ of tempering), its room-temperature mechanical property sees Table 2～6.
Steel of the present invention has the hardness higher than compared steel, tensile strength, toughness preferably.
1. quench through uniform temp, after low temperature (120～180 ℃) tempering, steel of the present invention has the hardness higher than compared steel.(seeing Table 2,3,4)
2. quench through uniform temp, after low temperature (120～180 ℃) tempering, steel of the present invention has the tensile strength higher than compared steel.(seeing Table 5)
3. quench through uniform temp, after low temperature (120～180 ℃) tempering, steel of the present invention has impelling strength preferably.(seeing Table 6)
The chemical ingredients of table 1 embodiment of the invention and compared steel, weight %
Table 2 embodiment of the invention and 1050 ℃ of quenching differing tempss of compared steel tempered hardness value
Illustrate: (1) quenching test is carried out in air furnace, is incubated 10 minutes, oil quenching.
(2) the differing temps tempering is 1 time, is incubated 1 hour.
Table 3 embodiment of the invention and 1070 ℃ of quenching differing tempss of compared steel tempered hardness value
Illustrate: (1) quenching test is carried out in air furnace, is incubated 10 minutes, oil quenching.
(2) the differing temps tempering is 1 time, is incubated 1 hour.
Table 4 embodiment of the invention and 1090 ℃ of quenching differing tempss of compared steel tempered hardness value
Illustrate: (1) quenching test is carried out in air furnace, is incubated 10 minutes, oil quenching.
(2) the differing temps tempering is 1 time, is incubated 1 hour.
Table 5 embodiment of the invention and compared steel tensile strength values
Table 6 embodiment of the invention and compared steel impact absorbing energy value
Claims (1)
1. antimicrobial cutery type stainless steel, it is characterized in that the concrete chemical ingredients (weight %) of this steel is as follows: C 0.50～0.70%, and Si 0.2～0.40%, S≤0.030%, P≤0.030%, Mn 0.21～0.40%, and Mo 0.10～1.00%, Cr 14～16%, Ni 0.80～1.20%, and V 0.05～0.50%, Nb0.05～0.15%, Ag 0.035～0.10%, and all the other are Fe and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101177817A CN101333626B (en) | 2008-08-06 | 2008-08-06 | Antimicrobial cutery type stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101177817A CN101333626B (en) | 2008-08-06 | 2008-08-06 | Antimicrobial cutery type stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101333626A CN101333626A (en) | 2008-12-31 |
| CN101333626B true CN101333626B (en) | 2010-11-03 |
Family
ID=40196507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101177817A Active CN101333626B (en) | 2008-08-06 | 2008-08-06 | Antimicrobial cutery type stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101333626B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568176A (en) * | 2015-12-28 | 2016-05-11 | 钢铁研究总院 | High-strength high-toughness high-sharpness-persistence antibacterial stainless steel |
| 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 |
| CN107699815B (en) * | 2017-11-27 | 2019-08-30 | 上海大学 | High hardness high toughness cutlery stainless steel and preparation method thereof |
| CN109972040A (en) * | 2019-04-15 | 2019-07-05 | 上海大学 | High intensity high corrosion resistance antimicrobial cutery stainless steel and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004018970A (en) * | 2002-06-18 | 2004-01-22 | Nippon Steel Corp | High-strength high-ductility hot dip galvanized steel plate having excellent burring machinability, and method for manufacturing the same |
| CN1948535A (en) * | 2006-11-09 | 2007-04-18 | 安徽工业大学 | Rare earth improving antibacterial performance silver containing stainless steel |
| CN101194037A (en) * | 2005-04-11 | 2008-06-04 | 住友金属工业株式会社 | Austenitic stainless steel |
-
2008
- 2008-08-06 CN CN2008101177817A patent/CN101333626B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004018970A (en) * | 2002-06-18 | 2004-01-22 | Nippon Steel Corp | High-strength high-ductility hot dip galvanized steel plate having excellent burring machinability, and method for manufacturing the same |
| CN101194037A (en) * | 2005-04-11 | 2008-06-04 | 住友金属工业株式会社 | Austenitic stainless steel |
| CN1948535A (en) * | 2006-11-09 | 2007-04-18 | 安徽工业大学 | Rare earth improving antibacterial performance silver containing stainless steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101333626A (en) | 2008-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101365820B (en) | High-strength spring steel excellent in brittle fracture resistance and method for producing same | |
| CN107699815B (en) | High hardness high toughness cutlery stainless steel and preparation method thereof | |
| CN102400048B (en) | Cold work roll steel for high-strength steel rolling, cold work roll and its manufacturing method | |
| CN102168226A (en) | Martensite antibacterial stainless steel and manufacturing method thereof | |
| CN102888566B (en) | Medical high nitrogen and nickel-less austenitic stainless steel material and preparation method | |
| CN102242320B (en) | Super-hard copper-containing martensite antibiotic stainless steel | |
| CN110846588A (en) | Maraging antibacterial stainless steel and preparation method thereof | |
| CN109972040A (en) | High intensity high corrosion resistance antimicrobial cutery stainless steel and preparation method thereof | |
| CN101643886B (en) | Stainless steel for cutter and manufacture method thereof | |
| CN113462959B (en) | Long-life high-reliability large-atom alloying high-temperature bearing steel and manufacturing method thereof | |
| CN109440013A (en) | A kind of non-magnetic high corrosion low-nickel austenitic stainless steel | |
| CN101333621B (en) | Antimicrobial post-cure cutery type stainless steel | |
| CN110093567A (en) | High tough antimicrobial cutery stainless steel and preparation method thereof | |
| CN103540864A (en) | Corrosion-resistant stainless steel coffee pot material and preparation method thereof | |
| CN101333626B (en) | Antimicrobial cutery type stainless steel | |
| CN103938091A (en) | High-toughness and high-wear-resistant cold-work die steel | |
| CN1519387A (en) | Embedded material of austenitic stainless steel in medical use | |
| CN103290328A (en) | High-niobium, high-wear-resistance and high-toughness cold-work die steel | |
| CN100469936C (en) | High-performance low-alloy niobium-contained high-speed steel | |
| CN101376954B (en) | Corrosion resistant, antibacterial nickel-saving austenitic stainless steel and production method thereof | |
| CN113652606B (en) | High-hardness high-toughness wear-resistant steel ball and preparation method thereof | |
| CN105568158B (en) | Nickel-chromium-free impact-resistant bearing steel and producing method thereof | |
| CN106480377A (en) | Martensitic stain less steel and its manufacture method with excellent mechanical property and antioxygenic property | |
| CN102242313B (en) | High-hardness silver-bearing martensite antibacterial stainless steel | |
| CN105568176A (en) | High-strength high-toughness high-sharpness-persistence antibacterial stainless steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |