CN105755393A - Special steel for petroleum pipelines and preparation method thereof - Google Patents
Special steel for petroleum pipelines and preparation method thereof Download PDFInfo
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- CN105755393A CN105755393A CN201610348581.7A CN201610348581A CN105755393A CN 105755393 A CN105755393 A CN 105755393A CN 201610348581 A CN201610348581 A CN 201610348581A CN 105755393 A CN105755393 A CN 105755393A
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- special steel
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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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/28—Normalising
-
- 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
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- 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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
- C23C8/40—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 liquids, e.g. salt baths, liquid suspensions
- C23C8/42—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 liquids, e.g. salt baths, liquid suspensions only one element being applied
- C23C8/44—Carburising
- C23C8/46—Carburising of ferrous surfaces
Abstract
The invention provides special steel for petroleum pipelines. The special steel comprises the following components in mass percent: 0.01 to 0.03 percent of carbon, 13 to 17 percent of chromium, 4 to 8 percent of nickel, 0.1 to 0.12 percent of copper, 0.4 to 0.5 percent of manganese, and the balance of iron. The special steel increases the category of alloy materials, adjusts the proportion component of all material elements, adds nickel, chromium, copper and manganese, ensures that nickel, chromium, copper and manganese elements at a reasonable ratio are contained in finished stainless steel products, greatly enhances the abrasion resistance and corrosion resistance of stainless steel materials, and can serve as special steel for petroleum pipelines.
Description
Technical field
The invention belongs to metallurgical technology field, relate to a kind of special steel, be specifically related to a kind of petroleum pipeline special steel and preparation method thereof.
Background technology
The material of current petroleum pipeline is generally mild steel, such as grade of steels such as APIB-X70, X80, but being as the exploitation of following Corrosive Oil & Gas Transmission and marine oil and gas, general carbon steel cannot meet its corrosion resistance requirement, if being continuing with general pipe line steel can bring bigger quality risk.Adopting rustless steel and carbon steel composite board is that Corrosive Oil & Gas Transmission conveying material has significant advantage, and it had both had stainless steel material corrosion resistance, had again intensity and the toughness of general pipe line steel material, it is possible to be substantially reduced the risk of corrosive pipeline cracking.The steel pipe using stainless steel clad plate is to do liner (mostly being 300 series austenitic rustless steels) with rustless steel, with carbon steel for base material, the advantage that steel pipe has rustless steel and carbon steel concurrently, in combination property, (especially corrosion resistance and intensity) is significantly better than single rustless steel or carbon steel, has good application prospect.
Summary of the invention
Goal of the invention: for the particular/special requirement of petroleum pipeline in prior art, the invention provides a kind of petroleum pipeline special steel.
Technical scheme: petroleum pipeline special steel provided by the present invention, composition is based on ferrum, it is characterised in that controlling carbon content less than 0.03%, described petroleum pipeline special steel is possibly together with chromium, nickel, copper, manganese.
Concrete, described special steel, its Ingredient percent is: containing carbon 0.01～0.03%, chromium 13～17%, nickel 4～8%, copper 0.1～0.12%, manganese 0.4～0.5%, all the other are ferrum.
We have discovered that in common carbon steel, add chromium and can be effectively improved hardenability and the tempering resistance of steel, improve the intensity of steel, and chromium can also reduce the activity of carbon, improve the leaching carbon of steel, and forming fine carbide, it is possible to decrease steel surface decarburization and graphitization in heating, rolling and heat treatment process are inclined to, and improve toughness and mar proof；But, during chromium too high levels, forming the carbide of chromium on the contrary in a large number, the bullet worsening steel subtracts performance and toughness.Therefore, in the present invention, controlling the content of chromium in stainless steel is 13～17% (percentage by weights), and optimum content is 16%.
Meanwhile, adding a small amount of nickel, be resistant to various acid corrosion and stress corrosion, and property is tough and tensile, be magnetic and good plasticity, welding performance might as well；Higher intensity and antioxidation, resistance to combustion gas corrosion ability is had under 650～1000 DEG C of high temperature.In the present invention, controlling the content of nickel in steel is 4%～8%, and optimum content is 7%.
Furthermore it has been found that the copper adding trace can improve the performance of steel atmospheric corrosion resistance.The manganese of trace can improve the intensity of steel, thus ensureing that its mechanical property does not reduce.
One preferred version of the present invention is: described stainless steel Ingredient percent is: containing carbon 0.01～0.03%, chromium 16%, nickel 7%, copper 0.1%, manganese 0.4%, all the other are ferrum.
Further, we have found that if adding the niobium of trace in technique scheme, the corrosion resistance of steel can be strengthened, research finds, reason is in that the present invention is when carrying out heat treatment, presents the tissue of austenite+carbide, the existence of carbide, the corrosion resistance of steel is had a significant impact, and austenite heats at 450～850 DEG C, owing to crystal boundary precipitates out the carbide Cr of chromium23C6So that the chrome content near crystal boundary reduces, and causes intercrystalline corrosion.Therefore, we add the niobium of trace wherein, are combined formation NbC with carbon so as to preferential, and its stability is high so that chromium retains in the base, it is to avoid the lean chromium of crystal boundary, thus alleviating firm grain boundary corrosion tendency.Additionally, NbC precipitates out in Dispersed precipitate at intracrystalline, and not easily grow up under high temperature, it is possible to improve the elevated temperature strength of the present invention.For the present invention, when the content of niobium is 0.3～0.8%, the most properly, it is preferable that 0.37%.
A present invention preferred version containing chromium is: described stainless steel Ingredient percent is: containing carbon 0.01～0.03%, chromium 16%, nickel 7%, copper 0.1%, manganese 0.4%, niobium 0.37%, all the other are ferrum.
The invention also discloses the method that above-mentioned special steel obtains, comprise the following steps: blanking, forging, normalizing, processing, carburizing, delayed quenching, lonneal, surface treatment.
Described forging, its temperature is 1530～1580 DEG C, heat treatment diffusion annealing temperature 1100～1150 DEG C, 4～6 hours, solid solution temperature 1050～1150 DEG C, 2 hours, and Ageing Treatment is 560 DEG C.
Described normalizing temperature is 950 DEG C～970 DEG C.
Described carburizing, carburizing temperature is 920 DEG C, and the time is 6～8h, with acetone for carburizer.
Described delayed quenching is, is cooled to 870～880 DEG C in advance, then carries out oil cooling, is cooled to room temperature.
Described tempering is tempering 2～3h when 200 DEG C.
Beneficial effect: invention increases alloy material classification, have adjusted the proportional components of various material element, the material prepare steel wire increases nickel, chromium, copper, manganese etc., make in rustless steel finished product containing elements such as the nickel of rational proportion, chromium, copper, manganese, it is greatly increased the wear-resisting of stainless steel and corrosion resistance, it is possible to as the special steel of petroleum pipeline.
Detailed description of the invention:
Embodiment 1
Becoming of special steel: containing carbon 0.01～0.03%, chromium 13%, nickel 4%, copper 0.1～0.12%, tungsten 0.4～0.5%, all the other are ferrum.
According to aforementioned proportion, carry out proportioning raw materials, mixing, blanking.
Forging temperature is 1530～1580 DEG C, heat treatment diffusion annealing temperature 1100～1150 DEG C, 4 hours, solid solution temperature 1050～1150 DEG C, 2 hours.
Normalizing temperature is 950 DEG C～970 DEG C.Processing, then carburizing, carburizing temperature is 920 DEG C, and the time is 6h, with acetone for carburizer.
It is cooled to 870～880 DEG C in advance, then carries out oil quenchinng, to room temperature.The last tempering 2h when 200 DEG C.Product is obtained after surface treatment.Hardness 216HBW.
Embodiment 2
Becoming of special steel: containing carbon 0.01～0.03%, chromium 17%, nickel 8%, copper 0.1～0.12%, tungsten 0.4～0.5%, all the other are ferrum.
According to aforementioned proportion, carry out proportioning raw materials, mixing, blanking.
Forging temperature is 1530～1580 DEG C, heat treatment diffusion annealing temperature 1100～1150 DEG C, 6 hours, solid solution temperature 1050～1150 DEG C, 2 hours.
Normalizing temperature is 950 DEG C～970 DEG C.Processing, then carburizing, carburizing temperature is 920 DEG C, and the time is 8h, with acetone for carburizer.
It is cooled to 870～880 DEG C in advance, then carries out oil quenchinng, to room temperature.The last tempering 3h when 200 DEG C.Product is obtained after surface treatment.Hardness 215HBW.
Embodiment 3
Becoming of special steel: containing carbon 0.01～0.03%, chromium 16%, nickel 7%, copper 0.1～0.12%, tungsten 0.4～0.5%, all the other are ferrum.
According to aforementioned proportion, carry out proportioning raw materials, mixing, blanking.
Forging temperature is 1530～1580 DEG C, heat treatment diffusion annealing temperature 1100～1150 DEG C, 6 hours, solid solution temperature 1050～1150 DEG C, 2 hours.
Normalizing temperature is 950 DEG C～970 DEG C.Processing, then carburizing, carburizing temperature is 920 DEG C, and the time is 6h, with acetone for carburizer.
It is cooled to 870～880 DEG C in advance, then carries out oil quenchinng, to room temperature.The last tempering 3h when 200 DEG C.Product is obtained after surface treatment.Hardness 217HBW.
Embodiment 4
Becoming of special steel: containing carbon 0.01～0.03%, chromium 13%, nickel 4%, copper 0.1～0.12%, tungsten 0.4～0.5%, niobium 0.3～0.8%, all the other are ferrum.
According to aforementioned proportion, carry out proportioning raw materials, mixing, blanking.
Forging temperature is 1530～1580 DEG C, heat treatment diffusion annealing temperature 1100～1150 DEG C, 4 hours, solid solution temperature 1050～1150 DEG C, 2 hours.
Normalizing temperature is 950 DEG C～970 DEG C.Processing, then carburizing, carburizing temperature is 920 DEG C, and the time is 6h, with acetone for carburizer.
It is cooled to 870～880 DEG C in advance, then carries out oil quenchinng, to room temperature.The last tempering 2h when 200 DEG C.Product is obtained after surface treatment.Hardness 218HBW.
Embodiment 5
Becoming of special steel: containing carbon 0.01～0.03%, chromium 17%, nickel 8%, copper 0.1～0.12%, tungsten 0.4～0.5%, niobium 0.3～0.8%, all the other are ferrum.
According to aforementioned proportion, carry out proportioning raw materials, mixing, blanking.
Forging temperature is 1530～1580 DEG C, heat treatment diffusion annealing temperature 1100～1150 DEG C, 6 hours, solid solution temperature 1050～1150 DEG C, 2 hours.
Normalizing temperature is 950 DEG C～970 DEG C.Processing, then carburizing, carburizing temperature is 920 DEG C, and the time is 8h, with acetone for carburizer.
It is cooled to 870～880 DEG C in advance, then carries out oil quenchinng, to room temperature.The last tempering 3h when 200 DEG C.Product is obtained after surface treatment.Hardness 217HBW.
Embodiment 6
Becoming of special steel: containing carbon 0.01～0.03%, chromium 16%, nickel 7%, copper 0.1%, tungsten 0.4%, niobium 0.37%, all the other are ferrum.
According to aforementioned proportion, carry out proportioning raw materials, mixing, blanking.
Forging temperature is 1530～1580 DEG C, heat treatment diffusion annealing temperature 1100～1150 DEG C, 6 hours, solid solution temperature 1050～1150 DEG C, 2 hours.
Normalizing temperature is 950 DEG C～970 DEG C.Processing, then carburizing, carburizing temperature is 920 DEG C, and the time is 6h, with acetone for carburizer.
It is cooled to 870～880 DEG C in advance, then carries out oil quenchinng, to room temperature.The last tempering 3h when 200 DEG C.Product is obtained after surface treatment.Hardness 219HBW.
Embodiment 7
Above-mentioned obtained steel are carried out corrosion-resistant test, is respectively placed in containing CO2、H2S, steam closed pressure vessel in, in 70 DEG C, constant temperature is after 48 hours.Acquired results is as follows: (in table numerical value Mass lost percentage ratio)
| CO2 | H2S | |
| Conventional carbon steel | 0.9 | 1.2 |
| Conventional rustless steel | 0.1 | 0.2 |
| Embodiment 1 | 0 | 0 |
| Embodiment 2 | 0 | 0 |
| Embodiment 3 | 0 | 0 |
| Embodiment 4 | 0 | 0 |
| Embodiment 5 | 0 | 0 |
| Embodiment 6 | 0 | 0 |
Claims (10)
1. a petroleum pipeline special steel, composition is based on ferrum, it is characterised in that controlling carbon content less than 0.03%, described petroleum pipeline special steel is possibly together with chromium, nickel, copper, manganese.
2. special steel according to claim 1, it is characterised in that each Ingredient percent of described special steel is:
Carbon 0.01～0.03%,
Chromium 13～17%,
Nickel 4～8%,
Copper 0.1～0.12%,
Manganese 0.4～0.5%,
Iron surplus.
3. special steel according to claim 1, it is characterised in that each Ingredient percent of described special steel is:
Carbon 0.01～0.03%,
Chromium 16%,
Nickel 7%,
Copper 0.1%,
Manganese 0.4%,
Iron surplus.
4. special steel according to claim 1, it is characterised in that possibly together with niobium 0.3～0.8% in its composition.
5. the preparation method of the special steel described in claim 1, it is characterised in that comprise the following steps: blanking, forging, normalizing, processing, carburizing, delayed quenching, lonneal, surface treatment.
6. the preparation method of special steel according to claim 4, it is characterised in that during forging, its temperature is 1530～1580 DEG C, heat treatment diffusion annealing temperature 1100～1150 DEG C, 4～6 hours, solid solution temperature 1050～1150 DEG C, 2 hours.
7. the preparation method of special steel according to claim 4, it is characterised in that normalizing temperature is 950 DEG C～970 DEG C.
8. the preparation method of special steel according to claim 4, it is characterised in that described carburizing, carburizing temperature is 920 DEG C, and the time is 6～8h, with acetone for carburizer.
9. the preparation method of special steel according to claim 4, it is characterised in that described delayed quenching is, is cooled to 870～880 DEG C in advance, then carries out oil cooling, is cooled to room temperature.
10. the preparation method of special steel according to claim 4, it is characterised in that described tempering is tempering 2～3h when 200 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610348581.7A CN105755393A (en) | 2016-05-24 | 2016-05-24 | Special steel for petroleum pipelines and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610348581.7A CN105755393A (en) | 2016-05-24 | 2016-05-24 | Special steel for petroleum pipelines and preparation method thereof |
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| Publication Number | Publication Date |
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| CN105755393A true CN105755393A (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610348581.7A Pending CN105755393A (en) | 2016-05-24 | 2016-05-24 | Special steel for petroleum pipelines and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109852895A (en) * | 2017-11-30 | 2019-06-07 | 中国科学院金属研究所 | A kind of high-strength and high ductility high magnetic characteristics metallic composite and its preparation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571860A (en) * | 2001-10-16 | 2005-01-26 | Ati资产公司 | Duplex stainless steel |
| CN1729306A (en) * | 2002-12-20 | 2006-02-01 | 住友金属工业株式会社 | High-strength martensitic stainless steel with excellent resistances to carbon dioxide gas corrosion and sulfide stress corrosion cracking |
| CN101171351A (en) * | 2005-04-28 | 2008-04-30 | 杰富意钢铁株式会社 | Stainless steel pipe for oil well excellent in enlarging characteristics |
| CN102373400A (en) * | 2011-10-25 | 2012-03-14 | 哈尔滨汇隆汽车箱桥有限公司 | Heat treatment method of spiral bevel gear of cargo truck on double-row rare earth carburization equipment |
-
2016
- 2016-05-24 CN CN201610348581.7A patent/CN105755393A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571860A (en) * | 2001-10-16 | 2005-01-26 | Ati资产公司 | Duplex stainless steel |
| CN1729306A (en) * | 2002-12-20 | 2006-02-01 | 住友金属工业株式会社 | High-strength martensitic stainless steel with excellent resistances to carbon dioxide gas corrosion and sulfide stress corrosion cracking |
| CN101171351A (en) * | 2005-04-28 | 2008-04-30 | 杰富意钢铁株式会社 | Stainless steel pipe for oil well excellent in enlarging characteristics |
| CN102373400A (en) * | 2011-10-25 | 2012-03-14 | 哈尔滨汇隆汽车箱桥有限公司 | Heat treatment method of spiral bevel gear of cargo truck on double-row rare earth carburization equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109852895A (en) * | 2017-11-30 | 2019-06-07 | 中国科学院金属研究所 | A kind of high-strength and high ductility high magnetic characteristics metallic composite and its preparation |
| CN109852895B (en) * | 2017-11-30 | 2021-07-02 | 中国科学院金属研究所 | High-strength high-toughness high-magnetic-performance metal composite material and preparation thereof |
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Application publication date: 20160713 |