CN107043896A - Anticorrosion steel and its forging technology - Google Patents
Anticorrosion steel and its forging technology Download PDFInfo
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- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
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Abstract
The invention discloses a kind of anticorrosion steel and its forging technology, its drip irrigation device is to include the component of following percentage by weight：Carbon 0.01 ~ 0.03%, element silicon 0.2 ~ 0.4%, manganese element 0.5 ~ 1.0%, P elements≤0.012%, element sulphur≤0.005%, chromium 14.0 ~ 16.0%, nickel element 9.0 ~ 11.0%, molybdenum element 0.1 ~ 0.2%, niobium element 0.2 ~ 0.3%, zr element 0.4 ~ 0.6%, remaining is ferro element, the present inventor have developed the structural sections of NH00Cr 3, niobium is found in research process, zr element generates synergy, significantly improve the salt spray resistance of steel surface, simultaneously, the carrier for providing carbon is provided using graphene, make its salt spray resistance more excellent, the structural sections of NH00Cr 3 are applied to the use of the outdoor structure and ornament of Reef in Chinese South Sea.
Description
Technical field
The present invention relates to Steel material, more particularly to a kind of anticorrosion steel and its forging technology.
Background technology
The South China Sea Islands belongs to marine climate, abundant rainfall, throughout the year high temperature, high humidity, high salt.Respectively power is all want south in the world
Hai Zhu takes forcible possession of on island, sets up the military base of oneself on the South China Sea Islands one after another, but the opportunity of combat face being deployed on this kind of island
Face salt air corrosion, wet weather and typhoon test, the alloy material used in battleship machine will take into full account above-mentioned factor in the choice,
Such as it is rarely employed magnesium alloy, different metal contact point must take anti-couple-corrosion measure, metal and the carbon fiber such as aluminium alloy
Composite junction is also required to take safeguard procedures, is blocks moisture intrusion body honeycomb, usually using non-porous honeycomb core
Deng it would therefore be highly desirable to need research and development to prepare moisture proof, protection from fumes, the alloy material of mould proof three proofings measure.
At present, application publication number discloses a kind of corrosion-resistant steel for CN103422031B Chinese patent in existing patent
Material, it is that 3.8wt%~4.1wt%, chromium are that 0.7wt%~0.8wt%, vanadium are 0.25wt%~0.35wt%, scandium to contain carbon
It is that 11wt%~15wt%, surplus are iron for 0.1wt%~0.2wt%, strontium element 0.3wt%~0.5wt%, nickel, the steel plate
With excellent wear-resistant, anticorrosive and crocking resistance.
The similar above-mentioned steel with excellent corrosion-resistant and high intensity are of common occurrence, but it is special to be applied to the South Sea
The special steel of environment is also rarely found at present, and existing steel are under high temperature, high humidity and hypersaline environment on the market, and surface is quickly
There is substantial amounts of mottling, mould etc., produce mottling, the steel of mould and be easily caused stress concentration, reduce the service life of steel.
The content of the invention
High temperature, high humidity and hypersaline environment can be applied to it is an object of the invention to provide one kind, with the longer use longevity
The anticorrosion steel of life.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of anticorrosion steel, include the component of following percentage by weight：Carbon 0.01~0.03%, element silicon 0.2~
0.4%, manganese element 0.5~1.0%, P elements≤0.012%, element sulphur≤0.005%, chromium 14.0~16.0%, nickel
Element 9.0~11.0%, molybdenum element 0.1~0.2%, niobium element 0.2~0.3%, zr element 0.4~0.6%, remaining is iron member
Element.
The present invention is further arranged to include the component of following percentage by weight：Carbon 0.02~0.025%, element silicon
0.2~0.28%, manganese element 0.6~0.7%, P elements≤0.010%, element sulphur≤0.005%, chromium 15.0~
15.3%, nickel element 10.2~10.6%, molybdenum element 0.13~0.15%, niobium element 0.21~0.23%, zr element 0.46~
0.49%, remaining is ferro element.
The present invention is further arranged to include the component of following percentage by weight：Carbon 0.023%, element silicon
0.26%, manganese element 0.68%, P elements 0.008%, element sulphur 0.004%, chromium 15.3%, nickel element 10.4%, molybdenum
Element 0.14%, niobium element 0.23%, zr element 0.47%, remaining is ferro element.
By using above-mentioned technical proposal, above-mentioned technical proposal be using ultralow carbon alloy as design basis, by increase Cr,
Ni content, under Oxidant effect, steel surface can generate the oxide-film that thickness is about 10nm, be adhering closely to steel
On surface, the carbon of chromium, nickel element and steel surface combines to form chromium carbide, carbonization nickel, substantially increases steel
Moisture-proof and corrosion resistance, moreover, chromium can improve the electrode potential of steel, reduce micro cell number, further improve the resistance to of steel
Corrosion, the steel not only good corrosion resistance, and hardness is higher of high chromium nickel content, heat resistance is preferable with wearability；To Gao Ge
The niobium element that percentage by weight is 0.2~0.3% is added in nickel steel material, there is larger atom mismatch between niobium and chromium, make
Niobium is relatively insoluble in solid solution, and the electropositivity of niobium is conducive to the carbon formation niobium carbide of niobium and steel surface, so that in alloy
Middle formation primary phase and secondary crystalline phase, the zr element that percentage by weight is 0.4~0.6%, zr element are added into chromium niobium steel
There is very big affinity with oxygen element, can generate that one layer fine and close in the steel surface, oxide-film that adhesive force is strong protects steel
Material surface is not easy to be corroded, and because titanium is the metal with excellent assivation property, and can keep oxide-film to have below 315 DEG C
Have the characteristic of passivation, some mechanical wears self-healing or can also regenerate again quickly, and improving steel surface heat-resisting quantity, it is anti-
While corrosive nature, niobium, zr element generate synergy, significantly improve the salt spray resistance of steel surface, fit it
Use for the outdoor structure and ornament of Reef in Chinese South Sea.
The present invention is further arranged to include the component of following percentage by weight：Carbon 0.01~0.03%, element silicon
0.2~0.4%, manganese element 0.5~1.0%, P elements≤0.012%, element sulphur≤0.005%, chromium 14.0~
16.0%, nickel element 9.0~11.0%, molybdenum element 0.1~0.2%, niobium element 0.2~0.3%, zr element 0.8~1.0%,
Zn-ef ficiency 0.4~0.6%, potassium element 0.05~0.08%, nitrogen 0.1~0.2%, boron element 0.03~0.05%, remaining
For ferro element.
The present invention is further arranged to include the component of following percentage by weight：Carbon 0.015~0.021%, silicon member
Element 0.29~0.37%, manganese element 0.6~0.7%, P elements≤0.009%, element sulphur≤0.004%, chromium 14.2~
14.5%, nickel element 9.2~9.4%, molybdenum element 0.14~0.15%, niobium element 0.23~0.25%, zr element 0.82~
0.85%, Zn-ef ficiency 0.46~0.48%, potassium element 0.06~0.063%, nitrogen 0.13~0.15%, boron element 0.036
~0.038%, remaining is ferro element.
The present invention is further arranged to include the component of following percentage by weight：Carbon 0.018%, element silicon
0.32%, manganese element 0.65%, P elements 0.009%, element sulphur 0.004%, chromium 15.0%, nickel element 9.4%, molybdenum member
Element 0.14%, niobium element 0.25%, zr element 0.85%, Zn-ef ficiency 0.48%, potassium element 0.062%, nitrogen 0.15%, boron
Element 0.038%, remaining is ferro element.
The present invention is further arranged to：The carrier of the carbon includes nano-graphene, and nano-graphene is in carbon member
Percentage by weight in the carrier of element is 70~80%.
By using above-mentioned technical proposal, in the environment of South Sea high temperature, high humidity, high salt, adding nitrogen contributes to zirconium
Form each between element and carbon, nitrogen formation carbide, nitride, alloying element or between alloying element and ferro element
Intermetallic compound is planted, the generation of carbide is promoted, significantly improves the corrosion resistance and mechanical property of steel；Add boron member
Element, micro boron element can significantly improve the quenching degree of the steel, improve heat-resisting quantity, high intensity and croop property, boron element energy
Auxiliary is played a part of in the enough processing to structural steel nickel, chromium, manganese, molybdenum, helps to improve the hot-working of steel, improves the steel
Service life, meanwhile, trace B can improve their form and distribution with the niobium carbide of refining eutectic, zirconium carbide, improve steel
Mechanical property and wearability, make the increase of matrix quenching degree, hardness and toughness is improved, the steel of zirconium/niobium system pair of formation
The anti-corrosion of Ni-Cr-Mn molybdenum plays collaboration corrosion-resistant effect in material；Meanwhile, the boride of metal formation is overlapped mutually collective effect, makes
The steel have excellent wear-resisting, corrosion-resistant performance, are applicable in South Sea high temperature, high humidity, the complex environment of high salt；Add zinc
After element, the surface of zinc covers the oxide-film of one layer of zinc oxide, carbon zinc and zinc hydroxide composition, and this layer oxide film is very
Densification, adhesion property preferably, can keep apart extraneous oxygen with internal tissue, prevent the Zinc Matrix of inside from continuing to be oxidized
Fall, make the corrosion-resistant and heatproof of the steel system, salt spray resistance more excellent.
The carrier of carbon is nano-graphene, and nano-graphene is also known as mono-layer graphite, be one kind by carbon atom with Sp2It is miscellaneous
Change the two dimensional crystal of the hexagonal cell shape of track composition, it can wrap up to form CNT or be stacked into three-dimensional stone
Ink, and graphene has excellent resistance to elevated temperatures, and in smelting process, steel are then injected in the honeycomb of graphene, make to melt
The isotactic arrangement body of body formation diameter very little, crystallinity is higher, with excellent high temperature resistant, anti-corrosion and salt tolerance.
Another object of the present invention is to disclose a kind of forging technology of anticorrosion steel, concrete technology is as follows：
(1) in arc furnace smelting procedure, furnace temperature is first risen to 740~750 DEG C, by carbon 0.01~0.03%, element silicon
0.2~0.4%, manganese element 0.5~1.0%, P elements≤0.012%, element sulphur≤0.005%, chromium 14.0~
16.0%, nickel element 9.0~11.0%, molybdenum element 0.1~0.2%, niobium element 0.2~0.3%, zr element 0.8~1.0%,
Zn-ef ficiency 0.4~0.6%, potassium element 0.05~0.08%, nitrogen 0.1~0.2%, boron element 0.03~0.05% and remaining
The ferro element of amount, is put into electric arc furnaces, and temperature then is risen into 1070~1080 DEG C, is incubated 1~2h；
(2) by the refining of LF stoves, refining temperature is 1440~1450 DEG C, composition fine setting, is incubated 2~4h, and whole process blows helium stirring,
Chemical analysis is reached component requirements, then cool the temperature to 890~895 DEG C；
(3) it is de-gassed with vacuum degassing furnace, degassing temperature is 1370~1380 DEG C, the handkerchief of vacuum 59~60, and pumpdown time is 2
~4h；
(4) helium protection molding is carried out at 1280~1290 DEG C, 730~735 DEG C, soaking time are kept the temperature at after solidification
For 58~60h, room temperature is finally air-cooled to；
(5) steel plate forged is heat-treated：Steel plate is put into heating furnace and is heated to 680~690 DEG C, insulation 30~
45min, is then cooled to room temperature with the air-cooled speed with 9~10 DEG C/s.
By using above-mentioned technical proposal, the component referred to using above-mentioned steps according to the application prepares steel with proportioning,
Nano-graphene and various metallic elements, nonmetalloid are added into electric arc furnaces, wherein, niobium element, zr element production
Raw synergy, making the steel of preparation has excellent heatproof, moisture-proof and salt spray resistance.
In summary, the invention has the advantages that：
1st, niobium element and zr element are added into steel system, the inventors discovered that niobium element is generated with zr element cooperates with work
With, making the steel of preparation has excellent salt fog resistance, improves the combination property of the steel, both ensure that heatproof, moisture-proof,
Salt fog resistance is enhanced again, adapts it to South China Sea Environment；
2nd, nitrogen, boron are also added in addition to carbon, sulphur, phosphorus into steel nonmetallic, more carbide, nitrogen is generated in steel surface
Compound, boride and mixture, form Corrosion Resistant Film, mate-assist niobium, the salt spray resistance of zirconium synergy enhancing steel；
3rd, the carrier for providing carbon is nano-graphene, and nano-graphene has honeycomb, in smelting process, and molten steel is poured
Build into honeycomb, be favorably improved the structural integrity of steel, auxiliary improves heatproof, moisture-proof and the salt spray resistance of the steel
Performance.
Brief description of the drawings
Fig. 1 is the hot rolling microstructure figure of the sample steel that carbon is provided by nano-graphene carrier in embodiment three；
Fig. 2 is the hot rolling microstructure figure of the sample steel that carbon is provided by carbon powder carrier in comparative example four.
Embodiment
The present invention is described in further detail with reference to embodiments.
Nano-graphene selects the graphene that Jinan Mo Xi new materials Science and Technology Ltd. produces.
Embodiment one：
(1) in arc furnace smelting procedure, furnace temperature is first risen to 750 DEG C, by carbon 0.01%, element silicon 0.2%, manganese element
0.5%, P elements 0.008%, element sulphur 0.004%, chromium 14.0%, nickel element 9.0%, molybdenum element 0.1%, niobium element
0.2%, the ferro element of zr element 0.8% and 75.178% puts into electric arc furnaces, temperature then is risen into 1070 DEG C,
It is incubated 2h；
(2) by the refining of LF stoves, refining temperature is 1440 DEG C, composition fine setting, is incubated 2h, and whole process blows helium stirring, helium it is logical
Enter speed for 0.1mL/s, chemical analysis is reached component requirements, then cool the temperature to 890 DEG C；
(3) it is de-gassed with vacuum degassing furnace, degassing temperature is 1370 DEG C, the handkerchief of vacuum 59, and pumpdown time is in 3h；
(4) helium protection molding is carried out at 1280 DEG C, the speed that is passed through of helium is 0.5mL/s, is kept the temperature at after solidification
730 DEG C, soaking time is 58h, is finally air-cooled to room temperature；
(5) steel plate forged is heat-treated：Steel plate is put into heating furnace and is heated to 680 DEG C, 30min is incubated, then
Room temperature is cooled to the air-cooled speed with 10 DEG C/s.
Embodiment two：
(1) in arc furnace smelting procedure, furnace temperature is first risen to 750 DEG C, by carbon 0.01%, element silicon 0.2%, manganese element
0.5%, P elements 0.008%, element sulphur 0.004%, chromium 14.0%, nickel element 9.0%, molybdenum element 0.1%, niobium element
0.2%, zr element 0.8%, Zn-ef ficiency 0.4%, potassium element 0.05%, nitrogen 0.1%, boron element 0.03% and
74.598% ferro element, is put into electric arc furnaces, and temperature then is risen into 1070 DEG C, is incubated 2h；
(2) by the refining of LF stoves, refining temperature is 1442 DEG C, composition fine setting, is incubated 2h, and whole process blows helium stirring, helium it is logical
Enter speed for 0.1mL/s, chemical analysis is reached component requirements, then cool the temperature to 892 DEG C；
(3) it is de-gassed with vacuum degassing furnace, degassing temperature is 1373 DEG C, the handkerchief of vacuum 60, and pumpdown time is in 3h；
(4) helium protection molding is carried out at 1281 DEG C, the speed that is passed through of helium is 0.5mL/s, is kept the temperature at after solidification
732 DEG C, soaking time is 59h, is finally air-cooled to room temperature；
(5) steel plate forged is heat-treated：Steel plate is put into heating furnace and is heated to 683 DEG C, 30min is incubated, then
Room temperature is cooled to the air-cooled speed with 10 DEG C/s.
Embodiment three：
(1) in arc furnace smelting procedure, furnace temperature is first risen to 750 DEG C, by carbon 0.021%, element silicon 0.28%, manganese member
Element 0.64%, P elements 0.009%, element sulphur 0.004%, chromium 14.6%, nickel element 9.8%, molybdenum element 0.2%, niobium
Element 0.26%, zr element 0.88%, Zn-ef ficiency 0.46%, potassium element 0.06%, nitrogen 0.15%, boron element 0.04% with
And 72.596% ferro element, put into electric arc furnaces, temperature then risen to 1070 DEG C, be incubated 2h；
(2) by the refining of LF stoves, refining temperature is 1442 DEG C, composition fine setting, is incubated 2h, and whole process blows helium stirring, helium it is logical
Enter speed for 0.1mL/s, chemical analysis is reached component requirements, then cool the temperature to 892 DEG C；
(3) it is de-gassed with vacuum degassing furnace, degassing temperature is 1373 DEG C, the handkerchief of vacuum 60, and pumpdown time is in 3h；
(4) helium protection molding is carried out at 1281 DEG C, the speed that is passed through of helium is 0.5mL/s, is kept the temperature at after solidification
732 DEG C, soaking time is 59h, is finally air-cooled to room temperature；
(5) steel plate forged is heat-treated：Steel plate is put into heating furnace and is heated to 683 DEG C, 30min is incubated, then
Room temperature is cooled to the air-cooled speed with 10 DEG C/s.
Example IV：
(1) in arc furnace smelting procedure, furnace temperature is first risen to 750 DEG C, by carbon 0.018%, element silicon 0.32%, manganese member
Element 0.65%, P elements 0.009%, element sulphur 0.004%, chromium 15.0%, nickel element 9.4%, molybdenum element 0.14%, niobium
Element 0.25%, zr element 0.85%, Zn-ef ficiency 0.48%, potassium element 0.062%, nitrogen 0.15%, boron element 0.038%
And 72.629% ferro element, put into electric arc furnaces, temperature then risen to 1070 DEG C, be incubated 2h；
(2) by the refining of LF stoves, refining temperature is 1442 DEG C, composition fine setting, is incubated 2h, and whole process blows helium stirring, helium it is logical
Enter speed for 0.1mL/s, chemical analysis is reached component requirements, then cool the temperature to 892 DEG C；
(3) it is de-gassed with vacuum degassing furnace, degassing temperature is 1373 DEG C, the handkerchief of vacuum 60, and pumpdown time is in 3h；
(4) helium protection molding is carried out at 1281 DEG C, the speed that is passed through of helium is 0.5mL/s, is kept the temperature at after solidification
732 DEG C, soaking time is 59h, is finally air-cooled to room temperature；
(5) steel plate forged is heat-treated：Steel plate is put into heating furnace and is heated to 683 DEG C, 30min is incubated, then
Room temperature is cooled to the air-cooled speed with 10 DEG C/s.
Embodiment five：
(1) in arc furnace smelting procedure, furnace temperature is first risen to 750 DEG C, by carbon 0.03%, element silicon 0.4%, manganese element
0.9%, P elements 0.011%, element sulphur 0.004%, chromium 15.8%, nickel element 10.4%, molybdenum element 0.18%, niobium member
Element 0.28%, zr element 0.95%, Zn-ef ficiency 0.58%, potassium element 0.076%, nitrogen 0.18%, boron element 0.048% with
And 70.161% ferro element, put into electric arc furnaces, temperature then risen to 1070 DEG C, be incubated 2h；
(2) by the refining of LF stoves, refining temperature is 1442 DEG C, composition fine setting, is incubated 2h, and whole process blows helium stirring, helium it is logical
Enter speed for 0.1mL/s, chemical analysis is reached component requirements, then cool the temperature to 892 DEG C；
(3) it is de-gassed with vacuum degassing furnace, degassing temperature is 1373 DEG C, the handkerchief of vacuum 60, and pumpdown time is in 3h；
(4) helium protection molding is carried out at 1281 DEG C, the speed that is passed through of helium is 0.5mL/s, is kept the temperature at after solidification
732 DEG C, soaking time is 59h, is finally air-cooled to room temperature；
(5) steel plate forged is heat-treated：Steel plate is put into heating furnace and is heated to 683 DEG C, 30min is incubated, then
Room temperature is cooled to the air-cooled speed with 10 DEG C/s.
Comparative example one：Compared with embodiment three, lack niobium element.
Comparative example two：Compared with embodiment three, lack zr element.
Comparative example three：Compared with embodiment three, lack niobium element, zr element.
Comparative example four：Compared with embodiment three, the carrier of carbon is carbon dust.
Detection method：
(1) carry out salt air corrosion experiment according to GB/T2423, the Initial Corrosion for testing steel is observed, and to 120 hours
Decay resistance is evaluated；
(2) corrosion resistance test is carried out using autoclave, the pressure of regulation autoclave is 20MPa, and temperature is 300 DEG C, duration
For 24h, using ultramicroscopic observation material surface corrosion condition；
(3) according to GB/T17998-2009《Stainless steel point pitting position》Standard has carried out electrochemical corrosion experimental research.
The average corrosion rate for testing steel is as shown in the table：
By upper table, the average corrosion rate of the experiment steel of the present embodiment is extremely low, with excellent salt spray corrosion resistance,
It can adapt to severe South China Sea Environment；It was found from comparative example four, have using nano-graphene as the steel of carrier most excellent flat
Equal corrosion rate.
The erosion-resisting result of the test of autoclave is as shown in the table：
| Sample | Surface topography |
| Embodiment one | Surface particles are uniform |
| Embodiment two | Surface particles are uniform |
| Embodiment three | Surface particles are uniform |
| Example IV | Surface particles are uniform |
| Embodiment five | Surface particles are uniform |
| Comparative example one | Surface particles are uniform |
| Comparative example two | Surface particles are uniform |
| Comparative example three | Surface particles differ greatly |
| Comparative example four | Surface particles are uniform |
By upper table, the steel of the present embodiment are after the erosion-resisting detection of autoclave, and surface particles are uniform, specification, chi
Very little all very homogeneous, with excellent heatproof, pressure-resistant corrosivity, and the steel of comparative example three are for embodiment, heatproof, resistance to
Press corrosive nature then poor.
Electrochemical corrosion experimental result of study is as follows：
By upper table, the pitting potential of the steel of the present embodiment is more than 1, it is ensured that the superiority that steel are not corroded substantially
Can, for the comparative example of niobium element and zr element is lacked, moisture-proof, anti-corrosion ring that prepared steel can be at the South Sea
Border is used.
The hot rolling microstructure photo of comparative example three and comparative example four is as depicted in figs. 1 and 2.
From Fig. 1 and Fig. 2, particle is arranged in the hot rolling microstructure for the sample steel that carbon is provided by nano-graphene carrier
Regularity is high, and salt spray resistance, heatproof and pressure-resistant performance are significantly increased, are optimal its performance.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, and those skilled in the art exist
The modification without creative contribution can be made to the present embodiment as needed by reading after this specification, but as long as in the present invention
Right in all protected by Patent Law.
Claims (8)
1. a kind of anticorrosion steel, it is characterised in that include the component of following percentage by weight：Carbon 0.01~0.03%, silicon
Element 0.2~0.4%, manganese element 0.5~1.0%, P elements≤0.012%, element sulphur≤0.005%, chromium 14.0~
16.0%, nickel element 9.0~11.0%, molybdenum element 0.1~0.2%, niobium element 0.2~0.3%, zr element 0.4~0.6%,
Remaining is ferro element.
2. anticorrosion steel according to claim 1, it is characterised in that include the component of following percentage by weight：Carbon
0.02~0.025%, element silicon 0.2~0.28%, manganese element 0.6~0.7%, P elements≤0.010%, element sulphur≤
0.005%, chromium 15.0~15.3%, nickel element 10.2~10.6%, molybdenum element 0.13~0.15%, niobium element 0.21~
0.23%, zr element 0.46~0.49%, remaining is ferro element.
3. anticorrosion steel according to claim 2, it is characterised in that include the component of following percentage by weight：Carbon
0.023%, element silicon 0.26%, manganese element 0.68%, P elements 0.008%, element sulphur 0.004%, chromium 15.3%, nickel
Element 10.4%, molybdenum element 0.14%, niobium element 0.23%, zr element 0.47%, remaining is ferro element.
4. anticorrosion steel according to claim 1, it is characterised in that include the component of following percentage by weight：Carbon
0.01~0.03%, element silicon 0.2~0.4%, manganese element 0.5~1.0%, P elements≤0.012%, element sulphur≤
0.005%, chromium 14.0~16.0%, nickel element 9.0~11.0%, molybdenum element 0.1~0.2%, niobium element 0.2~
0.3%, zr element 0.8~1.0%, Zn-ef ficiency 0.4~0.6%, potassium element 0.05~0.08%, nitrogen 0.1~0.2%,
Boron element 0.03~0.05%, remaining is ferro element.
5. anticorrosion steel according to claim 4, it is characterised in that include the component of following parts by weight：Carbon
0.015~0.021%, element silicon 0.29~0.37%, manganese element 0.6~0.7%, P elements≤0.009%, element sulphur≤
0.004%, chromium 14.2~14.5%, nickel element 9.2~9.4%, molybdenum element 0.14~0.15%, niobium element 0.23~
0.25%, zr element 0.82~0.85%, Zn-ef ficiency 0.46~0.48%, potassium element 0.06~0.063%, nitrogen 0.13~
0.15%, boron element 0.036~0.038%, remaining is ferro element.
6. anticorrosion steel according to claim 4, it is characterised in that include the component of following parts by weight：Carbon
0.018%, element silicon 0.32%, manganese element 0.65%, P elements 0.009%, element sulphur 0.004%, chromium 15.0%, nickel
Element 9.4%, molybdenum element 0.14%, niobium element 0.25%, zr element 0.85%, Zn-ef ficiency 0.48%, potassium element 0.062%,
Nitrogen 0.15%, boron element 0.038%, remaining is ferro element.
7. the anticorrosion steel according to claim 1~6 any one, it is characterised in that：The carrier bag of the carbon
Nano-graphene is included, and percentage by weight of the nano-graphene in the carrier of carbon is 70~80%.
8. a kind of forging technology of anticorrosion steel as claimed in claim 4, it is characterised in that concrete technology is as follows：
(1) in arc furnace smelting procedure, furnace temperature is first risen to 740~750 DEG C, by carbon 0.01~0.03%, element silicon
0.2~0.4%, manganese element 0.5~1.0%, P elements≤0.012%, element sulphur≤0.005%, chromium 14.0~
16.0%, nickel element 9.0~11.0%, molybdenum element 0.1~0.2%, niobium element 0.2~0.3%, zr element 0.8~1.0%,
Zn-ef ficiency 0.4~0.6%, potassium element 0.05~0.08%, nitrogen 0.1~0.2%, boron element 0.03~0.05% and remaining
The ferro element of amount, is put into electric arc furnaces, and temperature then is risen into 1070~1080 DEG C, is incubated 1~2h；
(2) by the refining of LF stoves, refining temperature is 1440~1450 DEG C, composition fine setting, is incubated 2~4h, and whole process blows helium stirring,
Chemical analysis is reached component requirements, then cool the temperature to 890~895 DEG C；
(3) it is de-gassed with vacuum degassing furnace, degassing temperature is 1370~1380 DEG C, the handkerchief of vacuum 59~60, and pumpdown time is 2
~4h；
(4) helium protection molding is carried out at 1280~1290 DEG C, 730~735 DEG C, soaking time are kept the temperature at after solidification
For 58~60h, room temperature is finally air-cooled to；
(5) steel plate forged is heat-treated：Steel plate is put into heating furnace and is heated to 680~690 DEG C, insulation 30~
45min, is then cooled to room temperature with the air-cooled speed with 9~10 DEG C/s.
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| CN108998747A (en) * | 2018-08-17 | 2018-12-14 | 南京力同重工机械有限公司 | A kind of corrosion-resistant steel and preparation method thereof |
| CN112226666A (en) * | 2020-10-28 | 2021-01-15 | 蚌埠飞宇轴承有限公司 | Preparation method of high-strength bearing |
| CN113061813A (en) * | 2021-03-22 | 2021-07-02 | 吉林省大维科技发展有限公司 | Anti-corrosion alloy steel for heating radiator and preparation method thereof |
| CN114850434A (en) * | 2022-04-28 | 2022-08-05 | 湖北腾升科技股份有限公司 | Production process of niobium-molybdenum chilled alloy composite roller |
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| CN114850434A (en) * | 2022-04-28 | 2022-08-05 | 湖北腾升科技股份有限公司 | Production process of niobium-molybdenum chilled alloy composite roller |
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