CN108300945A - A kind of martensitic stain less steel and its manufacturing method of manufacture scalpel blade - Google Patents
A kind of martensitic stain less steel and its manufacturing method of manufacture scalpel blade Download PDFInfo
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- CN108300945A CN108300945A CN201810405895.5A CN201810405895A CN108300945A CN 108300945 A CN108300945 A CN 108300945A CN 201810405895 A CN201810405895 A CN 201810405895A CN 108300945 A CN108300945 A CN 108300945A
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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
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
-
- 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
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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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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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
-
- 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
-
- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The present invention relates to a kind of martensitic stain less steel and its manufacturing method of manufacture scalpel blade, the martensitic stain less steel has consisting of by weight percentage：C：0.65 0.70%, Si≤0.5%, Mn0.4 0.7%, P≤0.03%, S≤0.025%, Ni≤0.5%, Cr：13.0 13.5%, Mo：0.8 1.2%, V：0.08 0.12%, surplus is Fe and other inevitable impurity；Hardness reaches HV700 or more after its Q-tempering, while its carbon content control is in reasonable range, to avoid due to improving carbon content adverse effect, anti-corrosion effect is good in the prior art.
Description
Technical field
The present invention relates to metal material and processing technique fields, and in particular to it is a kind of manufacture scalpel blade martensite not
The manufacturing method of rust steel.
Background technology
Martensitic stain less steel belongs to chrome stainless steel, and room temperature texture is that ferrite adds carbide, room temperature after Q-tempering
It is that martensite adds retained austenite and carbide down.The purpose of main exploitation of martensitic stain less steel is for manufacturing kitchen knife
Tool, garden instrument, aquatic products cutter etc..Martensitic stain less steel is mainly by promoting carbon content, heat treatment generation uniformly larger
The carbide of grain promotes quenching hardness, wearability, intensity etc..Processing and manufacturing process of the prior art for martensitic stain less steel
In steel strip surface quality and harmful components are not controlled effectively.
For shaving with thin blade, uniformly divide after needing steel to have uniform ingredient tissue, the crystal grain of refinement, heat treatment
The tiny carbide and higher quality control on the surface of cloth.Hardness after the uniform and stable production to blade of ingredient tissue and knife
The consistency of mouth sharpness is very helpful, and eventually affects the comfort level to shave；After the crystal grain of refinement and heat treatment uniformly
The tiny carbide of distribution is extremely important for the grinding edge of a knife, and coarse tissue can cause the kibe of the edge of a knife to form notch, finally
Influence shaving comfort level.
Martensitic stain less steel type currently on the market is more, such as：20Cr13,30Cr13,40Cr13 etc. of national standard.Its
Middle major part improves the hardness after heat treatment by improving the content of carbon.In the manufacturing process of blade, find 20Cr13 and
Hardness is in HV560-HV600 or so after 30Cr13 Q-temperings, inadequate for manufacturing blade its hardness, since hardness is inadequate,
Section is ground in manufacture can cause blade edge sharpness insufficient, influence final cutting effect.Hardness exists after 40Cr13 heat treatments
HV650 or so, but hardness is still relatively low；The rustless property of 40Cr13 is insufficient simultaneously, especially in the higher coastal area of humidity,
Surface oxidisation phenomenon is serious during the storage after blade is processed.
The Chinese patent literature of Publication No. CN103820711A is related to a kind of 5Cr13 stainless steel strips, by using survey
Examination, Q-tempering hardness can reach HV680 or so, but with the promotion of carbon content in steel band, rustless property declines serious；
And since the technology is mainly garden instrument exploitation, since garden instrument is to the of less demanding of rustless property, so on probation
Find that edge of a knife kibe phenomenon is serious when the steel grade, interior tissue and the carbide production bigger than normal for being unfavorable for razor blade.
The Chinese patent literature of Publication No. CN 102665964A is related to a kind of high-carbon martensitic stainless steel and its manufacture
Method, according to weight percent comprising 0.40~0.80% carbon, 11~16% chromium as main component, manufacturing method
For：To include C according to weight percent in thin strip continuous casting device：0.40~0.80%, Cr：11~16% stainless steel steel
Water is supplied to the molten steel pond by cast stainless steel thin plate from tundish by nozzle, casts the stainless sheet steel later immediately
Hot-roll annealing strip is manufactured with 5~40% reduction ratio using online roll, to make in the microstructure of hot-roll annealing strip
Primary carbide is 10 μm or less.Carbon content is still excessively high in the technical solution, and microstructure is controlled by technical process
Inside make the size of primary carbide, it is higher to technological requirement, and there are still the excessively high caused problems of carbon content.
Invention content
It is an object of the invention to solve problems of the prior art, a kind of geneva of manufacture scalpel blade is provided
The manufacturing method of body stainless steel, hardness reaches HV700 or more after Q-tempering, while its carbon content control is in rational range
It is interior, to avoid due to improving carbon content adverse effect, anti-corrosion effect is good in the prior art.
To achieve the above object, one aspect of the invention provides a kind of martensitic stain less steel of manufacture scalpel blade,
The martensitic stain less steel has consisting of by weight percentage：C：0.65-0.70%, Si≤0.5%, Mn0.4-
0.7%, P≤0.03%, S≤0.025%, Ni≤0.5%, Cr：13.0-13.5%, Mo：0.8-1.2%, V：0.08-
0.12%, surplus is Fe and other inevitable impurity.
In the martensitic stain less steel of the manufacture scalpel blade, the content of carbon is 0.68%.This is because with
Phosphorus content improves in steel, and the intensity of steel rises, and is heat-treated accessible hardness and improves.But carbon reacted with chromium to be formed Cr23C6 and
The amount of Cr7C3, the higher carbide for forming chromium of carbon content are bigger, and the formation of the carbide of chromium can form Cr depletion zone in steel, make
The corrosion resistance of steel is greatly reduced.So carbon content control can be ensured product hardness also in a relatively suitable range to be protected
Corrosion resistance is demonstrate,proved, the two is made to obtain optimum balance.In addition, relatively small carbon content range also can guarantee steel hardness after heat treatment
Keep stable and consistent.
In the martensitic stain less steel of the manufacture scalpel blade, silicon is added in steel mainly as deoxidier
, while silicon is also a kind of alloying element, plays solution strengthening effect, in addition silicon also has in terms of improving high temperature oxidation resistance
Apparent effect.But silicone content improves the ductility variation so that stainless steel material, therefore the martensitic stain less steel in steel
In, the content of Si is 0.4%.
In the martensitic stain less steel of the manufacture scalpel blade, manganese is both deoxidant element and solution strengthening member
Element can significantly improve the intensity of steel.But the excessively high mouldability for being unfavorable for improving steel of manganese content.In the martensitic stain less steel, Mn
Content preferably 0.6%.
In the martensitic stain less steel of the manufacture scalpel blade, phosphorus is harmful element, therefore is controlled according to production
Level should reduce as best one can.Preferably, the content of phosphorus should be controlled 0.02%.
In the martensitic stain less steel of the manufacture scalpel blade, sulphur is also a kind of harmful element, is existed in material
Sulfide not only will produce material red brittleness but also corrosion resistance can be reduced, be not more than so the content of sulphur is strict controlled in
0.003% to avoid sulphur illeffects.The content of more preferable sulphur is not more than 0.001%.
In the martensitic stain less steel of the manufacture scalpel blade, nickel can promote to form austenitic crystal structure,
So as to improve the attribute of the stainless steels such as plasticity, weldability and toughness.However, in the present invention, nickel is not uniquely to have
There is the element of this property.The content of nickel should be controlled in a suitable range, to balance austenite in martensitic stain less steel
With the content of ferritic ratio and balance nickel and other elements for promoting to be formed austenitic crystal structure.In the present invention,
The content of nickel should be not more than 0.5%, preferably 0.3%.
In the martensitic stain less steel of the manufacture scalpel blade, in order to ensure the corrosion resistance of stainless steel, chromium content
It should control in reasonable range.When chromium content is excessively high, one side cost improves, and on the other hand can damage the mouldability of steel；Chromium
When content is too low, it is difficult to meet rigid corrosion resistance demand.The content of chromium is 13~13.7% in the martensitic stain less steel of the present invention,
More preferable 13.5%.
In the martensitic stain less steel of the manufacture scalpel blade, suitable molybdenum, which is added, can promote the anti-corrosion of material
Property, while the through hardening performance of material quenching can be increased, increase steel belt roof bolt stability；However, the content of molybdenum should with chromium and
The content of nickel matches, to keep the structure of austenite and utmostly play the corrosion resistance of molybdenum, in addition, excessive molybdenum is added
Cost can be caused to improve.The content of molybdenum is 0.4~0.8%, more preferable 0.6% in the martensitic stain less steel of the present invention.
In the martensitic stain less steel of the manufacture scalpel blade, vanadium is existed as the excellent deoxidier of steel.
In steel plus suitable vanadium can thinning microstructure crystal grain, raising intensity and toughness.The carbide that vanadium is formed with carbon, at high temperature under high pressure may be used
Improve hydrogen attack resistance.To make acquisition fine grain martensite after quenching, it is most effective element that vanadium, which is added,.Vanadium is strong carbide shape
It is extremely strong with the binding force of carbon at element, stable VC is formed, is typical high-melting-point, high rigidity, high diffusive degree carbide, is
The strong element for improving wearability.Martensitic stain less steel in vanadium content be 0.08-0.12%, more preferable 0.08-0.10%.
Another aspect of the invention additionally provides the manufacturing method of the martensitic stain less steel, and the method includes following steps
Suddenly：
(1) above-mentioned composition is controlled by electric furnace steel making and the ingredient tissue that is needed after VOD is refined in steel
Elemental gas content is：N≤350ppm, H≤2.0ppm, O≤35ppm obtain corresponding size after punching block is cast；
(2) electroslag remelting is carried out to remove nonmetallic inclusion, and steel ingot is forged into the slab of 100mm*300mm*L；
(3) heating of plate blank is subjected to hot rolling to 850 DEG C or more, is rolled down to 2.0-4.0mm thickness；
(4) spheroidizing, 850 DEG C of annealing temperature are carried out with bell furnace to hot rolled strip, heat preservation cools to the furnace after 8 hours
Room temperature.
(5) steel strip surface is handled with ball blast production line, removes surface scale, obtains the surfaces No.1.
(6) cold rolling processing is carried out to the steel band after spheroidizing.Cold technique is as follows by taking 2.0mm thickness as an example：
2.0mm is cold rolled to 1.0mm；Then it anneals, 820 DEG C of temperature, speed 3m/s
1.0mm is cold rolled to 0.5mm；Then it anneals, 820 DEG C of temperature, speed 6m/s
0.5mm is cold rolled to 0.25mm；Then it anneals, 820 DEG C of temperature, speed 10m/s
0.25mm is cold rolled to 0.13mm；Then it anneals, 820 DEG C of temperature, speed 14m/s
Last 0.13 is cold rolled to 0.08mm.
Further, the elemental gas content in step (1) in control steel is：N≤220ppm, H≤0.8ppm, O≤
15ppm。
Technical solution of the present invention has the following advantages that：
1, the present invention proposes a kind of martensitic stain less steel of manufacture scalpel blade, and hardness reaches after Q-tempering
HV700 or more fully meets the process requirements that manufacture is shaved with thin blade；
2 at the same its carbon content control in reasonable range, avoid and improve carbon to improve hardness in the prior art and contain
Adverse effect is measured, anti-corrosion effect is good.
Specific implementation mode
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Embodiment 1
Martensitic stain less steel has consisting of by weight percentage in the embodiment：C：0.65-0.70%, Si≤
0.5%, Mn0.4-0.7%, P≤0.03%, S≤0.025%, Ni≤0.5%, Cr：13.0-13.5%, Mo：0.8-1.2%,
V：0.08-0.12%, surplus are Fe and other inevitable impurity.
Its manufacturing method includes：
(1) above-mentioned composition is controlled by electric furnace steel making and the ingredient tissue that is needed after VOD is refined in steel
Elemental gas content is：N≤350ppm, H≤2.0ppm, O≤35ppm obtain corresponding size after punching block is cast；
(2) electroslag remelting is carried out to remove nonmetallic inclusion, and carries out the forging uniformly and to refine of three dimension directions
Crystal grain obtains the steel billet for being suitble to size after forging；
(3) it polishes billet surface, removes surface defect；
(4) heating steel billet is rolled down to 3.0mm thickness to 860 DEG C of progress hot rollings；
(5) spheroidizing, 850 DEG C of annealing temperature are carried out with bell furnace to hot rolled strip, heat preservation cools to the furnace after 8 hours
Room temperature.
(6) cold rolling processing is carried out to the steel band after spheroidizing.
Embodiment 2
Martensitic stain less steel has consisting of by weight percentage in the embodiment：C：0.43%, Si：0.22%,
Mn：0.4%, P≤0.01%, S≤0.001%, Ni：0.2%, Cr：13.4%, Mo：0.5%, V：0.1%, surplus be Fe with
And other inevitable impurity.
830 DEG C of annealing temperature in step (3) in preparation method；Heating steel billet is subjected to heat to 880 DEG C in step (5)
It rolls, is rolled down to 2.0mm thickness.
Remaining is the same as embodiment 1.
Embodiment 3
Martensitic stain less steel has consisting of by weight percentage in the embodiment：C：0.45%, Si：0.3%,
Mn：01.%, P≤0.01%, S≤0.001%, Ni：0.25%, Cr：13.5%, Mo：0.9%, V：0.12%, surplus Fe
And other inevitable impurity.
Heating steel billet is subjected to hot rollings to 870 DEG C in step (5) in preparation method, is rolled down to 2.5mm thickness.
Remaining is the same as embodiment 1.
Embodiment 4
Martensitic stain less steel has consisting of by weight percentage in the embodiment：C：0.41%, Si：0.35%,
Mn：0.18%, P≤0.01%, S≤0.001%, Ni：0.33%, Cr：13.7%, Mo：1.20%, V：0.082%, surplus is
Fe and other inevitable impurity.
Heating steel billet is subjected to hot rollings to 860 DEG C in step (5) in preparation method, is rolled down to 3mm thickness.
Remaining is the same as embodiment 1.
Embodiment 5
Martensitic stain less steel has consisting of by weight percentage in the embodiment：C：0.41%, Si：0.28%,
Mn：0.48%, P≤0.01%, S≤0.001%, Ni：0.4%, Cr：13.5%, Mo：0.85%, V：0.1%, surplus Fe
And other inevitable impurity.
Heating steel billet is subjected to hot rollings to 880 DEG C in step step (5) in preparation method, is rolled down to 2mm thickness.
Remaining is the same as embodiment 1.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention belong to the scope of protection of present invention.
Claims (9)
1. a kind of martensitic stain less steel of manufacture scalpel blade, which is characterized in that the martensitic stain less steel is with weight percent
There is consisting of than meter：C：0.65-0.70%, Si≤0.5%, Mn0.4-0.7%, P≤0.03%, S≤0.025%, Ni
≤ 0.5%, Cr：13.0-13.5%, Mo：0.8-1.2%, V：0.08-0.12%, surplus be Fe and it is other inevitably
Impurity.
2. the martensitic stain less steel of manufacture scalpel blade according to claim 1, which is characterized in that with weight percent
The content for counting carbon is 0.68%.
3. the martensitic stain less steel of manufacture scalpel blade according to claim 1, which is characterized in that with weight percent
The content for counting silicon is 0.4%.
4. the martensitic stain less steel of manufacture scalpel blade according to claim 1, which is characterized in that with weight percent
The content for counting manganese is 0.6%.
5. the martensitic stain less steel of the manufacture scalpel blade according to any one of claim 1-4, which is characterized in that with
The content of weight percent meter phosphorus is 0.02%；The content of sulphur is 0.001%.
6. the martensitic stain less steel of manufacture scalpel blade according to claim 5, which is characterized in that with weight percent
The content for counting nickel is 0.3%；The content of chromium is 13.5%；The content of molybdenum is 0.6%.
7. the manufacturing method of the martensitic stain less steel of the manufacture scalpel blade according to any one of claim 1-6,
It is characterized in that, the method includes the following steps：
(1) gas in steel is controlled by electric furnace steel making and the ingredient tissue that is needed after VOD is refined to above-mentioned composition
Constituent content is：N≤350ppm, H≤2.0ppm, O≤35ppm obtain corresponding size after punching block is cast；
(2) electroslag remelting is carried out to remove nonmetallic inclusion, and carries out the forging with uniformly and crystal grain thinning of three dimension directions,
The steel billet for being suitble to size is obtained after forging；
(3) it polishes billet surface, removes surface defect, homogenize surface quality；
(4) heating steel billet is subjected to hot rolling to 850 DEG C or more, is rolled down to 2.0-4.0mm thickness；
(5) spheroidizing, 850 DEG C of annealing temperature are carried out with bell furnace to hot rolled strip, heat preservation cools to room with the furnace after 8 hours
Temperature.
(6) cold rolling processing is carried out to the steel band after spheroidizing.
8. the manufacturing method of the martensitic stain less steel of manufacture scalpel blade according to claim 7, which is characterized in that step
Suddenly annealing temperature is 820-850 DEG C in (3).
9. the manufacturing method of the martensitic stain less steel of manufacture scalpel blade according to claim 7 or 8, feature exist
In hardness reaches HV700 or more after the martensitic stain less steel Q-tempering obtained by the method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810405895.5A CN108300945A (en) | 2018-04-30 | 2018-04-30 | A kind of martensitic stain less steel and its manufacturing method of manufacture scalpel blade |
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| CN201810405895.5A CN108300945A (en) | 2018-04-30 | 2018-04-30 | A kind of martensitic stain less steel and its manufacturing method of manufacture scalpel blade |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055467A (en) * | 2019-05-22 | 2019-07-26 | 东莞市宝创模具钢材有限公司 | A kind of novel NT100 mold plug material and preparation method |
| CN112207527A (en) * | 2020-09-29 | 2021-01-12 | 重庆派斯克刀具制造股份有限公司 | Machining process of martensitic stainless steel surface-replaceable blade |
| CN113966405A (en) * | 2019-06-05 | 2022-01-21 | 山特维克材料技术公司 | Martensitic stainless steel alloy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11343540A (en) * | 1998-06-01 | 1999-12-14 | Nisshin Steel Co Ltd | Martensitic stainless steel excellent in antibacterial property |
| CN102665964A (en) * | 2009-12-21 | 2012-09-12 | Posco公司 | High-carbon martensitic stainless steel and a production method therefor |
| CN107723616A (en) * | 2017-10-23 | 2018-02-23 | 江苏延汉材料科技有限公司 | A kind of martensitic stain less steel and its manufacture method |
-
2018
- 2018-04-30 CN CN201810405895.5A patent/CN108300945A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11343540A (en) * | 1998-06-01 | 1999-12-14 | Nisshin Steel Co Ltd | Martensitic stainless steel excellent in antibacterial property |
| CN102665964A (en) * | 2009-12-21 | 2012-09-12 | Posco公司 | High-carbon martensitic stainless steel and a production method therefor |
| CN107723616A (en) * | 2017-10-23 | 2018-02-23 | 江苏延汉材料科技有限公司 | A kind of martensitic stain less steel and its manufacture method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055467A (en) * | 2019-05-22 | 2019-07-26 | 东莞市宝创模具钢材有限公司 | A kind of novel NT100 mold plug material and preparation method |
| CN113966405A (en) * | 2019-06-05 | 2022-01-21 | 山特维克材料技术公司 | Martensitic stainless steel alloy |
| CN112207527A (en) * | 2020-09-29 | 2021-01-12 | 重庆派斯克刀具制造股份有限公司 | Machining process of martensitic stainless steel surface-replaceable blade |
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Application publication date: 20180720 |