CN106011685B - The steel of high-strength corrosion-resistant and application - Google Patents

The steel of high-strength corrosion-resistant and application Download PDF

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Publication number
CN106011685B
CN106011685B CN201610541980.5A CN201610541980A CN106011685B CN 106011685 B CN106011685 B CN 106011685B CN 201610541980 A CN201610541980 A CN 201610541980A CN 106011685 B CN106011685 B CN 106011685B
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steel
carbon
resistant
carbon nanotube
corrosion
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CN106011685A (en
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李永安
高光亮
姜东�
杨钢
谢梅波
刘书杰
陈军
周宏斌
张金中
林继兴
胡孙达
李振坤
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ZHEJIANG RUIZHI STEEL INDUSTRY Co Ltd
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ZHEJIANG RUIZHI STEEL INDUSTRY Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/001Ferrous alloys, e.g. steel alloys containing N
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/005Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

The invention discloses a kind of steel of high-strength corrosion-resistant, include the component of following mass percent:Manganese element 1.5 ~ 2.1%, nickel element 2.5 ~ 4.5%, molybdenum element 2.5 ~ 4.5%, chromium 12 ~ 14%, carbon 0.03 ~ 0.08%, nitrogen 0.05 ~ 0.15%, boron element 0.03 ~ 0.05%, niobium element 0.1 ~ 0.5%, titanium elements 0.1 ~ 0.13%, zr element 0.5 ~ 0.75%, europium element 0.003 ~ 0.005%, remaining is ferro element, and the steel of preparation have excellent mechanical property and corrosion resistance, can be used in coastal oil well operation.

Description

The steel of high-strength corrosion-resistant and application
Technical field
The present invention relates to Steel material, more particularly to the steel of a kind of high-strength corrosion-resistant and application.
Background technology
In the oil recovery in oil field, drilling process, the petroleum pipeline, oil well casing, sucker rod, oil well pump and the ground that largely use Conveyance conduit is required for being subjected to the extremely complex environment in underground, and sucker rod, oil well pump need to bear complicated abrasion and chemistry is rotten The synergistic effect of erosion;In the transmission process of the fluids such as oil, natural gas, petroleum pipeline, the oil well casing of transmission need by The severe natural environment such as high and cold, high fever, high-sulfur, hypoxemia needs to bear low temperature resistant, corrosion-resistant and abrasion resistance properties;In oil field The high water-cut stage stage is developed, causes the eccentric wear problem of oil pipe and sucker rod more next since hole deviation, well cover the factors such as flexural deformation It is more serious, especially because the corrosion of High water cut, high salinity production fluid, more exacerbate eccentric wear between sucker rod and oil pipe with Corrosion, shortens the production cycle of oil well, increases the operating cost of oil recovery, cause scrapping for sucker rod etc..
Currently, the Chinese patent that application publication number is CN104789902A discloses a kind of high strength steel for steel platform Plate and its forging technology contain carbon, manganese, sodium, aluminium, silicon, vanadium, titanium, strontium, tellurium, chromium, molybdenum, nickel, yttrium, magnesium, lanthanum, rubidium, europium, surplus For iron and inevitable impurity, which has excellent wear-resistant, anticorrosive and crocking resistance.
But above-mentioned patent and most of steel in the prior art are only used for the standard machinery of no requirement for anticorrosion, machine It is used as general structural member in the parts of bed, is unsuitable for containing K in coastal oil well+、Na2+、Ca2+、Mg2+Equal alkaline earths Metal ion and Cl-、SO4 2-It is used in the adverse circumstances of ionic liquid.
Invention content
The object of the present invention is to provide a kind of steel of the applicable high-strength corrosion-resistant to work in coastal oil well.
The present invention above-mentioned technical purpose technical scheme is that:
A kind of steel of high-strength corrosion-resistant, include the component of following mass percent:Manganese element 1.5~2.1%, nickel member Element 2.5~4.5%, molybdenum element 2.5~4.5%, chromium 12~14%, carbon 0.03~0.08%, nitrogen 0.05~ 0.07%, boron element 0.03~0.05%, niobium element 0.1~0.3%, titanium elements 0.1~0.15%, zr element 0.1~ 0.3%, europium element 0.003~0.005%, remaining is ferro element.
By using above-mentioned technical proposal, on the basis of common iron, the chromium of addition 12%~14%, in oxidisability Under medium effect, steel surface can generate the oxidation film that thickness is about 10nm, be adhering closely on steel surface, chromium and steel The carbon on material surface combines and forms chromium carbide, the corrosion resistance of steel is substantially increased, moreover, chromium can improve the electrode of steel Current potential reduces micro cell number, effectively improves the corrosion resistance of steel, the steel of high chrome contents not only good corrosion resistance, and hard Degree is higher, and heat resistance is preferable with wearability;0.1~0.3% niobium element is added into high chrome material, has between niobium and iron Larger atom mismatch, makes niobium relatively be insoluble in solid solution, the electropositivity of niobium be conducive to niobium and steel surface carbon and Nitrogen forms niobium carbide and niobium nitride, to form primary phase and secondary condition in the alloy, in addition, carbon and nitrogen It also can be in conjunction with the carboritride for forming primary or secondary niobium;0.1~0.15% titanium elements, titanium are added into chromium niobium steel Element and oxygen have prodigious affinity, titanium surface that can generate one layer of fine and close, strong adhesive force oxidation film, protect steel table Face is not easy to be corroded, and can keep oxidation film with blunt since titanium is the metal for having excellent assivation property, and at 315 DEG C or less The characteristic of change, some mechanical wears self-healing or can also regenerate again quickly;0.1~0.3% zirconium member is added into reaction system The carbon of element, zr element and steel surface, nitrogen form carbide, nitride, between alloying element or alloying element with Form various intermetallic compounds between ferro element, promote the generation of carbide, significantly improve steel corrosion resistance and Mechanical property;0.03~0.05% boron element is added into reaction system, micro boron element can significantly improve quenching for the steel Permeability, the processing of structural steel nickel, chromium, manganese, molybdenum can be played auxiliary by improving heat-resisting quantity, high intensity and croop property, boron element The effect helped contributes to the hot-working for improving steel, improves the service life of the steel, meanwhile, trace B can be with refining eutectic Niobium carbide, zirconium carbide, improve their form and distribution, improve the mechanical property and wearability of steel, make matrix quenching degree Increase, hardness and toughness are improved, and the anti-corrosion of Ni-Cr-Mn molybdenum plays collaboration corrosion-resistant in the steel of titanium/niobium system pair of formation Effect, meanwhile, the boride that metal is formed is overlapped mutually collective effect, and the steel is made to have excellent wear-resisting, corrosion-resistant performance, It can be used in the complicated severe coastal oil well operation of environment.
The present invention is further arranged to:It further include the Zn-ef ficiency that content is less than 0.2%.
By using above-mentioned technical proposal, Zn-ef ficiency is added in steel surface, in briny environment, the surface of zinc covers The oxidation film of one layer of zinc oxide, carbon zinc and zinc hydroxide composition, this layer oxide film is very fine and close, and adhesion property is preferable, energy Extraneous oxygen and internal tissue are kept apart, prevent internal Zinc Matrix continuation from being oxidized away, meanwhile, with steel surface Chromium forms zinc-chromium system, zinc-nickel system, zinc-zirconium system, and in these systems, inert metal element makes the mistake of hydrogen reduction Current potential increases, it is suppressed that the progress of cathode reaction, meanwhile, the corrosion product compact structure that these systems generate can be to coating Play preferable protective effect;If the content of Zn-ef ficiency is more than 0.2%, Zn content is excessively high, corrosion product become ZnO and ZnCl2·4Zn(OH)2Mixture, compared to pure ZnCl2·4Zn(OH)2For corrosion product, structure is more loose, shadow Ring the protective effect to coating.
The present invention is further arranged to:It further include the copper that content is less than 0.5%.
By using above-mentioned technical proposal, copper is added in steel surface, copper and the copper zinc that Zn-ef ficiency is formed are multiple Closing has excellent impact resistance corrosive nature;Copper is compound with excellent acid and alkali-resistance, resistance to sea with the cupro-nickel that nickel element is formed The performance of aqueous corrosion;Copper titanium that copper and titanium elements are formed is compound, and there is excellent chemical stability, compound with regular structure to be arranged in Steel surface can form interface intercalation configuration with boron nitride, keep the passivity of oxidation film stronger, have excellent anti-corrosion stability; If the content of copper is more than 0.5%, the brittleness of the steel surface can be increased, seriously affect the intensity of steel.
The present invention is further arranged to:Further include the magnesium elements that content is less than 0.08%.
By using above-mentioned technical proposal, after magnesium elements are added, magnesium elements interact with europium element, europium element energy Enough refine α-Mg phases and β-Mg phases, meanwhile, europium element generates fine and close oxidation film in steel on the surface of magnesium, play stablize, Passivation is conducive to the corrosion resistance for improving the steel;If the content of magnesium elements is more than 0.08%, europium can be inhibited first Element forms fine and close protective film, and the corrosion resistance of steel is made to decline.
The present invention is further arranged to:The carrier of the carbon includes carbon nanotube, and carbon nanotube is in carbon Mass percent in carrier is 60~80%.
By using above-mentioned technical proposal, it is attached with carbon nanotube in steel surface, carbon nanotube is one kind by carbon atom The seamless hollow tubular structure of formation, length are tens microns, and diameter but only has more than ten nanometers, will be above-mentioned in rolling process Various metallic elements penetrate into carbon nanotube, are allowed to form structured size, shape similar in diameter and the diameter of carbon nanotube Similar nano metal is combined by nano level dotted metal and forms various oxidation films, to which it is excellent to ensure that the steel surface has Different corrosion-resistant and wear-resisting property.
The present invention also provides a kind of steel of high-strength corrosion-resistant, include the component of following mass percent:Manganese element 1.8%, nickel element 3.5%, molybdenum element 3.5%, chromium 13%, carbon 0.05%, nitrogen 0.1%, boron element 0.04%, niobium element 0.3%, titanium elements 0.11%, zr element 0.6%, europium element 0.004%, Zn-ef ficiency 0.2%, copper 0.5%, magnesium elements 0.08%, remaining is ferro element.
By using above-mentioned technical proposal, the steel prepared using the component of above-mentioned mass percent can reach best High intensity, wearability and corrosion resistance.
The present invention also provides a kind of sucker rod and its box cuplings, are made using the steel of above-mentioned high-strength corrosion-resistant.
By using above-mentioned technical proposal, the sucker rod of preparation can be avoided when oil field development is to high water-cut stage, due to The factors such as hole deviation, well set flexural deformation cause the eccentric wear problem of tubing in sucker rod pumping wells and pumping unit, prevent because of High water cut, high mineralization Corrosion of the production fluid to sucker rod is spent, the production cycle of oil well can be extended, operation well time and operating cost is reduced, reduces oil recovery Production cost;The collaboration of mechanical wear and chemical attack caused by the rod collar of preparation can resist underground complicated factor is made With reducing the abrasion of rod collar and tube inner wall, extend the service life of sucker rod and its box cupling.
The present invention is further arranged to:The sucker rod is used with rod collar and is threadedly coupled.
By using above-mentioned technical proposal, the connection type of sucker rod and box cupling using being threadedly coupled, installation exercise simply, It is convenient, fast, use cost is reduced, the power consumption of ground pumping unit is reduced.
In conclusion the invention has the advantages that:
1, in high chrome material, the metallic elements such as niobium, titanium, zirconium, europium and carbon, nitrogen, boron nonmetalloid are added to, in steel Surface forms carbide, nitride and boride, is adhering closely on steel surface, plays excellent antisepsis;Meanwhile The protective system of titanium/niobium plays the role of the anti-corrosion of Ni-Cr-Mn molybdenum to cooperate with corrosion-resistant, and the dosage very little of titanium niobium zirconium boron element More excellent antisepsis can be played;
2, zinc, zinc-chromium system, zinc-nickel system and the oxidation in zinc-zirconium system of formation are also permeated in the steel surface Membrane structure is finer and close, and zinc plays the role of cooperateing with corrosion-resistant;
3, also it is permeated with copper in the steel surface, copper-zinc system, copper-nickel system, the copper-titanium system of formation have excellent Anti-corrosive properties, meanwhile, boron nitride can be plugged into copper-zinc system, formed intercalation configuration, keep the passivity of oxidation film stronger, into one Step improves the antiseptic property of the steel;
4, since carbon nanotube has a tubular structure of seamless hollow, and a diameter of nanoscale, to steel surface plus Enter carbon nanotube, above-mentioned trace meter penetrates into the hollow tube of carbon nanotube, that is, has nano level consistency, makes carbon Compound, the film of boride are finer and close, uniform, help to improve the antiseptic property of the steel.
Specific implementation mode
Invention is further described in detail with reference to embodiments.
Detection means:
(1) anti-corrosion property:Corrosion resistance test is carried out using autoclave, the pressure for adjusting autoclave is 20MPa, and the duration is For 24 hours, using ultramicroscopic observation material surface corrosion condition;
(2) fatigue resistance:Sucker rod is tested using PLG-300KN HF fatigue testing machines, tests loading stress For 406MPa, stress ratio R=0.1, fatigue life is more than 1*106It is secondary that breakage does not occur is qualified products;
(3) wearability:It is tested using MG-200 high temperature and high speed friction wear testing machines, tests specific force:P= 0.5MPa, test speed:N=300rpm tests total rotating speed:100000 turns, test(ing) medium:Clear water, temperature is 60 DEG C, when experiment Between:6 days;
(4) mechanical property:Using GB/T228-2002 examination criterias respectively to the tensile strength of sucker rod, yield strength and The contraction percentage of area is detected.
Embodiment one:
Formula:Manganese element 1.5%, nickel element 2.5%, molybdenum element 2.5%, chromium 12%, carbon 0.03%, nitrogen member Element 0.05%, boron element 0.03%, niobium element 0.1%, titanium elements 0.1%, zr element 0.5%, europium element 0.003%, copper coin Element 0.2%, magnesium elements 0.03%, remaining is ferro element.
Preparation method is same as the prior art, and the smelting temperature of steel is 1580~1680 DEG C, is wanted in the smelting process of steel Influence of the stringent control oxide system field trash to material property.The rolling temperature of steel is 1180~960 DEG C, and heap is cold.Smelting is adopted It is just refined with electric arc furnaces and molten steel is provided, oxygen decarburization desulfurization, further alloying adjustment are carried out to just making steel water with AOD or VOD stoves Ingot is poured after the refinings such as ingredient and temperature, degassing.Milling train opens embryo flaw detection, and temperature control cool controlled rolling forming material, it is fixed that heat treatment final finishing is cut Ruler is become a useful person.
Embodiment two:
Formula:Manganese element 1.7%, nickel element 3%, molybdenum element 3%, chromium 12.5%, carbon 0.05%, nitrogen 0.08%, boron element 0.03%, niobium element 0.2%, titanium elements 0.11%, zr element 0.6%, europium element 0.004%, Zn-ef ficiency 0.1%, magnesium elements 0.03%, remaining is ferro element.
Preparation method is the same as embodiment one.
Embodiment three:
Formula:Manganese element 1.9%, nickel element 3.5%, molybdenum element 3.5%, chromium 13%, carbon 0.06%, nitrogen member Element 0.10%, boron element 0.04%, niobium element 0.3%, titanium elements 0.12%, zr element 0.65%, europium element 0.004%, zinc Element 0.2%, copper 0.3%, magnesium elements 0.05%, remaining is ferro element.
Preparation method is the same as embodiment one.
Example IV:
Formula:Manganese element 2.0%, nickel element 4%, molybdenum element 4%, chromium 13.5%, carbon 0.07%, nitrogen 0.12%, boron element 0.04%, niobium element 0.4%, titanium elements 0.12%, zr element 0.7%, europium element 0.005%, Zn-ef ficiency 0.15%, copper 0.4%, magnesium elements 0.06%, remaining is ferro element, and carbon is provided by carbon nanotube.
Preparation method penetrates into carbon nanotube in advance as in the first embodiment, differing only in the alloying adjusting component stage.
Embodiment five:
Formula:Manganese element 2.1%, nickel element 4.5%, molybdenum element 4.5%, chromium 14%, carbon 0.08%, nitrogen member Element 0.15%, boron element 0.05%, niobium element 0.5%, titanium elements 0.13%, zr element 0.75%, europium element 0.005%, zinc Element 0.15%, copper 0.4%, magnesium elements 0.06%, remaining is ferro element, and carbon is provided by carbon nanotube.
Preparation method penetrates into carbon nanotube in advance as in the first embodiment, differing only in the alloying adjusting component stage.
Comparative example one:Compared with embodiment one, lack niobium element, corresponding to increase titanium elements content, preparation method is the same as implementation Example one;
Comparative example two:Compared with embodiment one, lack titanium elements, accordingly increases niobium element content, preparation method is the same as implementation Example one.
Comparative example three:Compared with embodiment one, lack niobium, titanium elements, accordingly increases iron content, preparation method is the same as real Apply example one.
The testing result of anti-corrosion property and fatigue resistance is as shown in the table:
Sample Anti-corrosion property Fatigue resistance
Embodiment one Surface particles are uniform It is qualified
Embodiment two Surface particles are uniform It is qualified
Embodiment three Surface particles are uniform It is qualified
Example IV Particle is uniform, and smooth surface is regular It is qualified
Embodiment five Smooth surface is regular, and particle is uniform It is qualified
Comparative example one Surface particles are uniform in size It is qualified
Comparative example two Surface particles are uniform in size It is qualified
Comparative example three Surface particles size is uneven It is unqualified
As seen from the above table, the steel in embodiment are after corrosion resistance test is handled, and the particle on surface is more uniform, surface texture More regular, carbon is splendid as the anti-corrosion effects of the embodiment of carrier by carbon nanotube;Lack the comparative example of niobium/titanium system Corrosion resistance it is worst.
Test result is as follows for wearability shown in table:
Sample Wear rate (10-6g/m)
Embodiment one 0.14
Embodiment two 0.12
Embodiment three 0.08
Example IV 0.02
Embodiment five 0.01
Comparative example one 0.25
Comparative example two 0.38
Comparative example three 3.22
As seen from the above table, there is excellent wear-resisting property through sucker rod manufactured in the present embodiment, and lacks niobium, titanium member respectively The wear rate of the sucker rod of the comparative example of element dramatically increases, and the wear rate for lacking the sucker rod of the comparative example of niobium, titanium elements is bright It is aobvious to increase, it is seen then that niobium, titanium elements synergistic effect, abrasion resistant effect are best.
Test result is as follows for mechanical property shown in table:
Sample Tensile strength (MPa) Yield strength (MPa) The contraction percentage of area (%)
Embodiment one 795 660 50
Embodiment two 797 668 55
Embodiment three 800 670 60
Example IV 805 690 70
Embodiment five 810 695 75
Comparative example one 776 595 43
Comparative example two 768 605 42
Comparative example three 717 520 32
As seen from the above table, through steel manufactured in the present embodiment there is excellent mechanical property, yield strength can reach 660MPa or more.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this It is all protected by Patent Law in the right of invention.

Claims (7)

1. a kind of steel of high-strength corrosion-resistant, it is characterised in that include the component of following mass percent:Manganese element 1.5 ~ 2.1%, nickel element 2.5 ~ 4.5%, molybdenum element 2.5 ~ 4.5%, chromium 12 ~ 14%, carbon 0.03 ~ 0.08%, nitrogen 0.05 ~ 0.15%, boron element 0.03 ~ 0.05%, niobium element 0.1 ~ 0.5%, titanium elements 0.1 ~ 0.13%, zr element 0.5 ~ 0.75%, europium element 0.003 ~ 0.005%, remaining is ferro element;The carrier of the carbon includes carbon nanotube, and carbon nanometer Mass percent of the pipe in the carrier of carbon is 60 ~ 80%;
In rolling process, above-mentioned various metals are penetrated into carbon nanotube, are allowed to form diameter and the diameter of carbon nanotube Nano metal similar in similar structured size, shape.
2. the steel of high-strength corrosion-resistant according to claim 1, it is characterised in that:Further include that content is less than 0. 2% Zn-ef ficiency.
3. the steel of high-strength corrosion-resistant according to claim 2, it is characterised in that:Further include the copper that content is less than 0.5% Element.
4. the steel of high-strength corrosion-resistant according to claim 1, it is characterised in that:Further include that content is less than 0.08% Magnesium elements.
5. a kind of steel of high-strength corrosion-resistant, it is characterised in that include the component of following mass percent:Manganese element 1.8%, Nickel element 3.5%, molybdenum element 3.5%, chromium 13%, carbon 0.05%, nitrogen 0.1%, boron element 0.04%, niobium element 0.3%, titanium elements 0.11%, zr element 0.6%, europium element 0.004%, Zn-ef ficiency 0.2%, copper 0.5%, magnesium elements 0.08%, remaining is ferro element;The carrier of the carbon includes carbon nanotube, and carbon nanotube is in the carrier of carbon Mass percent is 60 ~ 80%;In rolling process, above-mentioned various metals are penetrated into carbon nanotube, be allowed to be formed diameter with Nano metal similar in structured size, shape similar in the diameter of carbon nanotube.
6. a kind of sucker rod and its box cupling, it is characterised in that:Using the high-strength corrosion-resistant described in claim 1 ~ 5 any one Steel be made.
7. sucker rod according to claim 6 and its box cupling, it is characterised in that:The sucker rod is used with rod collar It is threadedly coupled.
CN201610541980.5A 2016-07-07 2016-07-07 The steel of high-strength corrosion-resistant and application Active CN106011685B (en)

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CN107043896A (en) * 2017-03-04 2017-08-15 蒋培丽 Anticorrosion steel and its forging technology
CN110724873A (en) * 2018-07-17 2020-01-24 宝钢特钢有限公司 High-wear-resistance die forging die steel and manufacturing method thereof
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
CN109591956A (en) * 2018-11-16 2019-04-09 天津市宝洪源机械制造有限公司 A kind of container ship closes up the manufacturing process of mouth with corrosion-resistant hatch board
KR20220039705A (en) * 2019-06-21 2022-03-29 에스피엠 오일 & 가스 인크. Wear and corrosion resistant steel compositions and high pressure pumps and pump components comprising them
CN110144447B (en) * 2019-06-28 2020-09-08 浙江睿智钢业有限公司 High-strength corrosion-resistant oil casing steel material and preparation process thereof

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JP4271826B2 (en) * 2000-04-26 2009-06-03 新日鐵住金ステンレス株式会社 Steel with a fine solidification structure
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