CN105420611A - Corrosion-resistant steel for door and window and thermal treatment method for corrosion-resistant steel - Google Patents
Corrosion-resistant steel for door and window and thermal treatment method for corrosion-resistant steel Download PDFInfo
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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
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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
- C21D6/002—Heat treatment of ferrous alloys containing Cr
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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
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
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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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/34—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in more than one step
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
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Abstract
The invention provides corrosion-resistant steel for a door and window and a thermal treatment method for the corrosion-resistant steel. The corrosion-resistant steel comprises, by weight, 0.03%-0.16% of C, 0.05%-1.5% of Si, 0.1%-2.0% of Mn, smaller than 0.025% of P, smaller than 0.01% of S, 0.05%-0.1% of Al, smaller than 0.008% of N, 0.1%-0.5% of Cr, 0.03%-0.5% of Cu, 0.1%-0.43% of composite rare earth and the balance iron and impurities. The corrosion resistance of the corrosion-resistant steel is smaller than 0.003 mm per year under the acidic condition with the pH ranging from 4 to 7, and the corrosion resistance of the corrosion-resistant steel is smaller than 0.004 mm per year under the alkaline condition with the pH ranging from 7 to 10. On the premise that strength and density of the steel are not influenced, a certain content of silicon and a certain content of chromium are added, the corrosion resistance of the steel is improved, and long service life can be kept under the condition of an acid-base solution.
Description
technical field:
The present invention relates to a kind of steel, is a kind of door and window corrosion-resistant steel and heat treating method thereof specifically.
background technology:
Steel material is widely used as the section bar at glass door and window, steel alloy, cast steel and forged steel all can be used as the section bar of door and window, respectively have advantage, but current steel door and window in use can run into some special environment, as run into the erosion of strong acid solution, strong base solution, salts solution etc.In the course of time very large impact is created on the outward appearance of steel material and performance.Along with the prolongation of time, erosion can be more serious, causes cannot normally using of steel.
summary of the invention:
Goal of the invention: the present invention, in order to solve the phenomenon of the corrosion of door and window, strengthens safety, technically provides corrosion resistant steel plate existing; Another object of this invention is to provide the heat treatment mode of above-mentioned corrosion-resistant steel.
technical scheme:door and window corrosion-resistant steel of the present invention, comprises the raw material of following weight percent:
C：0.03%~0.16%、
Si：0.05%~1.5%、
Mn：0.1%~2.0%、
Below P:0.025%,
Below S:0.01%,
Al：0.005%~0.1%、
Below N:0.008%,
Cr：0.1%~0.5%、
Cu：0.03%~0.5%、
Compound rare-earth: 0.1% ~ 0.43%,
Surplus is made up of iron and impurity,
Described compound rare-earth weight percent comprises following component: Sm:7.2-8.5%, La:6.1-6.3%, Ac:3.5-4.8%, Nd:12-14%, Eu:11-13%, Tb:7.2-7.5%, and surplus is Tm;
This door and window corrosion-resistant steel, the number density of compound is 0.9/μm
2above, the individual percentage that the thick carbide of particle diameter more than 0.5 μm is shared in described carbide is less than 0.1; This anti-corrosion steel plate erosion resistance under the acidic conditions of pH 4 ~ 7 is less than 0.002mm/, and pH erosion resistance under the alkaline condition of 7 ~ 10 is less than 0.003mm/.
The technical scheme that the present invention is more outstanding is, described door and window corrosion-resistant steel comprises following weight percent raw material:
C：0.03%~0.16%、
Si：0.05%~1.5%、
Mn：0.1%~2.0%、
Below P:0.025%,
Below S:0.01%,
Al：0.005%~0.1%、
Below N:0.008%,
Cr：0.1%~0.5%、
Cu：0.03%~0.5%、
Compound rare-earth: 0.1 ~ %0.43%,
Surplus is made up of iron and impurity,
Described compound rare-earth weight percent comprises following component: Sm:7.2-8.5%, La:6.1-6.3%, Ac:3.5-4.8%, Nd:12-14%, Eu:11-13%, Tb:7.2-7.5%, and surplus is Tm.
Further comprise: Mo0.01% ~ 0.5%;
Further comprise: Sn0.001% ~ 0.5%;
Further comprise: Ni0.005% ~ 0.3%;
Preferably, the weight percent of described impurity is all less than 0.1%.
The heat treating method of described door and window corrosion-resistant steel, comprising: ageing practice method, carburizing working method, nitridation operations method, carbonitriding working method and refrigerating work procedure, is characterized in that:
Described ageing practice method: steel part is heated to 100 ~ 250 DEG C, is incubated 5 ~ 20 hours or the longer time;
Described carburizing working method: steel part is put into carburizing medium, is heated to 900 ~ 950 DEG C and is incubated;
Described nitridation operations method: utilize the activated nitrogen atom that ammonia decomposes out 500 ~ 600 DEG C time, make steel piece surface by nitrification, forms nitride layer;
Described carbonitriding working method: by steel piece surface carburizing simultaneously and nitriding;
Described refrigerating work procedure: be cooled to 500 DEG C in atmosphere, then adopt water-cooled, with the rate of cooling water-cooled of 10 ~ 11 DEG C/s to room temperature.
Preferably, described ageing practice method: steel part is heated 200 DEG C and cooling after being incubated 10 hours;
Described carburizing working method: steel part is put into carburizing medium, is heated to 930 DEG C and is incubated 2 hours;
Described nitridation operations method: by heating temperatures to 550 DEG C, ammonia decomposes makes steel piece surface by nitrification;
Described carbonitriding working method: by steel piece surface carburizing simultaneously and nitriding;
Described refrigerating work procedure: be cooled to 650 DEG C in air, then adopt water-cooled, with the rate of cooling water-cooled of 10 DEG C/s to room temperature.
beneficial effect:the present invention, under the prerequisite of the intensity and density that do not affect steel, adds element silicon and the chromium element of certain content, promotes the erosion resistance of steel, can keep the permanent life-span under the condition of acid-base solution.
The present invention is at ageing practice method, carburizing working method, nitridation operations method, carbonitriding working method and refrigerating work procedure in addition, guarantee that the element silicon and chromium element etc. added is evenly distributed on steel inside, improve steel strength, under the prerequisite not affecting steel autologous density, reach corrosion resistant effect.
embodiment:
embodiment 1: a kind of door and window corrosion-resistant steel, comprises following weight percent raw material:
C：0.07%、
Si：0.08%、
Mn：0.5%、
P：0.015%、
S：0.005%、
Al：0.05%、
N：0.004%、
Cr：0.2%、
Cu：0.12%，
Compound rare-earth: 0.4%,
Surplus is made up of iron and the impurity being less than 0.1%,
Described compound rare-earth weight percent comprises following component: Sm:7.2-8.5%, La:6.1-6.3%, Ac:3.5-4.8%, Nd:12-14%, Eu:11-13%, Tb:7.2-7.5%, and surplus is Tm.
This door and window corrosion-resistant steel, the number density of compound is 0.9/μm
2above, the individual percentage that the thick carbide of particle diameter more than 0.5 μm is shared in described carbide is less than 0.1; This anti-corrosion steel plate erosion resistance under the acidic conditions of pH 4 ~ 7 is less than 0.002mm/, and pH erosion resistance under the alkaline condition of 7 ~ 10 is less than 0.003mm/.
The heat treating method of described door and window corrosion-resistant steel: ageing practice method, carburizing working method, nitridation operations method, carbonitriding working method and refrigerating work procedure;
Described ageing practice method: steel part is heated 200 DEG C and cooling after being incubated 10 hours;
Described carburizing working method: steel part is put into carburizing medium, is heated to 930 DEG C and is incubated 2 hours;
Described nitridation operations method: by heating temperatures to 550 DEG C, ammonia decomposes makes steel piece surface by nitrification;
Described carbonitriding working method: by steel piece surface carburizing simultaneously and nitriding;
Described refrigerating work procedure: be cooled to 650 DEG C in air, then adopt water-cooled, with the rate of cooling water-cooled of 10 DEG C/s to room temperature.
embodiment 2:a kind of corrosion-resistant steel, comprises following weight percent raw material:
C：0.08%、
Si：0.09%、
Mn：0.6%、
P：0.013%、
S：0.003%、
Al：0.06%、
N：0.005%、
Cr：0.25%、
Cu：0.11%、
Compound rare-earth: 0.35%,
Surplus is made up of iron and the impurity being less than 0.1%,
Described compound rare-earth weight percent comprises following component: Sm:7.2-8.5%, La:6.1-6.3%, Ac:3.5-4.8%, Nd:12-14%, Eu:11-13%, Tb:7.2-7.5%, and surplus is Tm.
This door and window corrosion-resistant steel, the number density of compound is 0.9/μm
2above, the individual percentage that the thick carbide of particle diameter more than 0.5 μm is shared in described carbide is less than 0.1; This anti-corrosion steel plate erosion resistance under the acidic conditions of pH 4 ~ 7 is less than 0.003mm/, and pH erosion resistance under the alkaline condition of 7 ~ 10 is less than 0.004mm/.
The heat treating method of described door and window corrosion-resistant steel: ageing practice method, carburizing working method, nitridation operations method, carbonitriding working method and refrigerating work procedure;
Described ageing practice method: steel part is heated 300 DEG C and cooling after being incubated 6 hours;
Described carburizing working method: steel part is put into carburizing medium, is heated to 950 DEG C and is incubated 1.5 hours;
Described nitridation operations method: by heating temperatures to 580 DEG C, ammonia decomposes makes steel piece surface by nitrification;
Described carbonitriding working method: by steel piece surface carburizing simultaneously and nitriding;
Described refrigerating work procedure: be cooled to 500 DEG C in air, then adopt water-cooled, with the rate of cooling water-cooled of 9 DEG C/s to room temperature.
embodiment 3: a kind of corrosion-resistant steel, comprises following weight percent raw material:
C：0.08%、
Si：0.1%、
Mn：0.3%、
P：0.01%、
S：0.006%、
Al：0.01%、
N：0.003%、
Cr：0.2%、
Cu：0.03%~0.5%、
Compound rare-earth: 0.3%,
Surplus is made up of iron and the impurity being less than 0.1%,
Described compound rare-earth weight percent comprises following component: Sm:7.2-8.5%, La:6.1-6.3%, Ac:3.5-4.8%, Nd:12-14%, Eu:11-13%, Tb:7.2-7.5%, and surplus is Tm.
This door and window corrosion-resistant steel, the number density of compound is 0.9/μm
2above, the individual percentage that the thick carbide of particle diameter more than 0.5 μm is shared in described carbide is less than 0.1; This anti-corrosion steel plate erosion resistance under the acidic conditions of pH 4 ~ 7 is less than 0.003mm/, and pH erosion resistance under the alkaline condition of 7 ~ 10 is less than 0.004mm/.
The heat treating method of described door and window corrosion-resistant steel: ageing practice method, carburizing working method, nitridation operations method, carbonitriding working method and refrigerating work procedure;
Described ageing practice method: steel part is heated 350 DEG C and cooling after being incubated 5 hours;
Described carburizing working method: steel part is put into carburizing medium, is heated to 980 DEG C and is incubated 1 hour;
Described nitridation operations method: by heating temperatures to 590 DEG C, ammonia decomposes makes steel piece surface by nitrification;
Described carbonitriding working method: by steel piece surface carburizing simultaneously and nitriding;
Described refrigerating work procedure: be cooled to 480 DEG C in air, then adopt water-cooled, with the rate of cooling water-cooled of 10 DEG C/s to room temperature.
As mentioned above, although represented with reference to specific preferred embodiment and described the present invention, it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite not departing from claims definition, various change can be made in the form and details to it.
Claims (8)
1.
a kind of door and window corrosion-resistant steel, it is characterized in that, comprise the raw material of following weight percent:
C：0.03%~0.16%、
Si：0.05%~1.5%、
Mn：0.1%~2.0%、
Below P:0.025%,
Below S:0.01%,
Al：0.005%~0.1%、
Below N:0.008%,
Cr：0.1%~0.5%、
Cu：0.03%~0.5%、
Compound rare-earth: 0.1% ~ 0.43%,
Surplus is made up of iron and impurity,
Described compound rare-earth weight percent comprises following component: Sm:7.2-8.5%, La:6.1-6.3%, Ac:3.5-4.8%, Nd:12-14%, Eu:11-13%, Tb:7.2-7.5%, and surplus is Tm; This door and window corrosion-resistant steel, the number density of compound is 0.9/μm
2above, the individual percentage that the thick carbide of particle diameter more than 0.5 μm is shared in described carbide is less than 0.1; This anti-corrosion steel plate erosion resistance under the acidic conditions of pH 4 ~ 7 is less than 0.003mm/, and pH erosion resistance under the alkaline condition of 7 ~ 10 is less than 0.004mm/.
2. according to claim 1
door and window corrosion-resistant steel, it is characterized in that, comprise following weight percent raw material:
C：0.03%~0.16%、
Si：0.05%~1.5%、
Mn：0.1%~2.0%、
Below P:0.025%,
Below S:0.01%,
Al：0.005%~0.1%、
Below N:0.008%,
Cr：0.1%~0.5%、
Cu：0.03%~0.5%、
Compound rare-earth: 0.1% ~ 0.43%,
Surplus is made up of iron and impurity,
Described compound rare-earth weight percent comprises following component: Sm:7.2-8.5%, La:6.1-6.3%, Ac:3.5-4.8%, Nd:12-14%, Eu:11-13%, Tb:7.2-7.5%, and surplus is Tm.
3. door and window according to claim 1 is corrosion-resistant
door and window corrosion-resistant steelsteel, is characterized in that, also comprises: Mo0.01% ~ 0.5%.
4. according to claim 1
door and window corrosion-resistant steel, it is characterized in that, also comprise: Sn0.001% ~ 0.5%.
5. according to claim 1
door and window corrosion-resistant steel, it is characterized in that, also comprise: Ni0.005% ~ 0.3%.
6. according to claim 1
door and window corrosion-resistant steel, it is characterized in that, the weight percent of described impurity is less than 0.1%.
7. one kind
door and window corrosion-resistant steelheat treating method, comprising: ageing practice method, carburizing working method, nitridation operations method, carbonitriding working method and refrigerating work procedure, is characterized in that:
Described ageing practice method: steel part is heated to 100 ~ 250 DEG C, is incubated 5 ~ 20 hours or the longer time;
Described carburizing working method: steel part is put into carburizing medium, is heated to 900 ~ 950 DEG C and is incubated;
Described nitridation operations method: utilize the activated nitrogen atom that ammonia decomposes out 500 ~ 600 DEG C time, make steel piece surface by nitrification, forms nitride layer;
Described carbonitriding working method: by steel piece surface carburizing simultaneously and nitriding;
Described refrigerating work procedure: be cooled to 500 DEG C in atmosphere, then adopt water-cooled, with the rate of cooling water-cooled of 9 DEG C/s to room temperature.
8. according to claim 7
door and window corrosion-resistant steelheat treating method, it is characterized in that:
Described ageing practice method: steel part is heated 200 DEG C and cooling after being incubated 10 hours;
Described carburizing working method: steel part is put into carburizing medium, is heated to 930 DEG C and is incubated 2 hours;
Described nitridation operations method: by heating temperatures to 550 DEG C, ammonia decomposes makes steel piece surface by nitrification;
Described carbonitriding working method: by steel piece surface carburizing simultaneously and nitriding;
Described refrigerating work procedure: be cooled to 650 DEG C in air, then adopt water-cooled, with the rate of cooling water-cooled of 10 DEG C/s to room temperature.
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| CN201510887002.1A CN105420611A (en) | 2015-12-07 | 2015-12-07 | Corrosion-resistant steel for door and window and thermal treatment method for corrosion-resistant steel |
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| CN201510887002.1A CN105420611A (en) | 2015-12-07 | 2015-12-07 | Corrosion-resistant steel for door and window and thermal treatment method for corrosion-resistant steel |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009299165A (en) * | 2008-06-16 | 2009-12-24 | Sanyo Special Steel Co Ltd | Method for manufacturing high-strength carburized component by induction hardening |
| CN101928886A (en) * | 2010-07-15 | 2010-12-29 | 南京钢铁股份有限公司 | Corrosion resistant steel for cargo oil tanks and application thereof |
| CN102131947A (en) * | 2008-07-15 | 2011-07-20 | 奥贝尔&杜瓦尔公司 | Hardened martensitic steel having low cobalt content, process for manufacturing part from this steel, and parts thus obtained |
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- 2015-12-07 CN CN201510887002.1A patent/CN105420611A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009299165A (en) * | 2008-06-16 | 2009-12-24 | Sanyo Special Steel Co Ltd | Method for manufacturing high-strength carburized component by induction hardening |
| CN102131947A (en) * | 2008-07-15 | 2011-07-20 | 奥贝尔&杜瓦尔公司 | Hardened martensitic steel having low cobalt content, process for manufacturing part from this steel, and parts thus obtained |
| CN101928886A (en) * | 2010-07-15 | 2010-12-29 | 南京钢铁股份有限公司 | Corrosion resistant steel for cargo oil tanks and application thereof |
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