CN106119732B - A kind of deep-sea oil extracting ship F60 two phase stainless steels pipe joint forging feedstock production process - Google Patents

A kind of deep-sea oil extracting ship F60 two phase stainless steels pipe joint forging feedstock production process Download PDF

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CN106119732B
CN106119732B CN201610466477.8A CN201610466477A CN106119732B CN 106119732 B CN106119732 B CN 106119732B CN 201610466477 A CN201610466477 A CN 201610466477A CN 106119732 B CN106119732 B CN 106119732B
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forging
temperature
stainless steels
deep
production process
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CN106119732A (en
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陈凡
陈一凡
崔海东
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Zhangjiagang Haiguo new energy equipment Limited by Share Ltd
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ZHANGJIAGANG HAIGUO HEAVY FORGING CO Ltd
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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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • 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
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite

Abstract

The invention discloses a kind of deep-sea oil extracting ship F60 two phase stainless steels pipe joint forging feedstock production process, its step is：A. the components by weight percent is taken to be：C:≤ 0.3%；Si:≤ 1.00%；Mn:≤ 2.00%；P:≤ 0.03%；S:≤ 0.02%；Cr:22 23%；Ni:4.5 6.5%；Mo:3.00 3.50%；N:0.14 0.20%；Remaining is Fe and the base steel of other residual elements is to be heated to 1200 DEG C in the forge furnace after raw material enters preheating, start to forge, initial forging temperature is controlled at 1,150 1200 DEG C, final forging temperature is not less than 850 DEG C, using ten word directions, jumping-up is pulled out repeatedly for three times, and forging then is air-cooled into room temperature by final forging temperature；B. machining removes its oxide skin；C. it is heat-treated：Workpiece is heated up to 1050 ± 10 DEG C, heat time t≤4.0h being preheated in 400 ± 10 DEG C of heating furnace, more than 4.0h is then incubated, then quenches water cooling.

Description

A kind of deep-sea oil extracting ship F60 two phase stainless steels pipe joint forging feedstock production process
Technical field
The present invention relates to a kind of deep-sea oil extracting ship F60 two phase stainless steels pipe joint forging feedstock production process.
Background technology
Deep sea equipment requires throughout the year in the extremely severe sea condition working environment such as high salt, high pressure, low temperature, HI high impact Forging products have high intensity, corrosion resistant, pressure-resistant, high tenacity (particularly low-temperature flexibility) and impact resistance strong, antifatigue by force etc. comprehensive Close performance.
Contain Cr, Ni, Mo, N alloying element in F60 high alloy type two phase stainless steels, there are good etch resistant properties.Cr、 C, the element such as Mo, N strengthens matrix, reduces brittlement phase and separates out, ensures the plastic-steel of steel, so ferro element ----austenite phase it is same When exist, each other restrict metal grain grow up, maintain the fine grain of steel, the crystal boundary gross area is more than single-phase steel, the intensity of steel Height, particularly yield strength are very high, and have certain plastic-steel.Because F60 two phase stainless steels have excellent mechanical property Energy and corrosion resisting property, countries in the world are widely used in the forging products being on active service under etching condition.
The content of the invention
The technical problems to be solved by the invention are：A kind of deep-sea oil extracting ship F60 two phase stainless steels pipe joint forging is provided Part feedstock production process.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of deep-sea oil extracting ship F60 two-phases are not Become rusty coupling forging feedstock production process, and its step is：
A. the components by weight percent is taken to be：C:≤ 0.3%；Si:≤ 1.00%；Mn:≤ 2.00%；P:≤ 0.03%；S:≤ 0.02%；Cr:22-23%；Ni:4.5-6.5%；Mo:3.00-3.50%；N:0.14-0.20%；Remaining is Fe and other are residual The base steel of remaining element is to be heated to 1200 DEG C in the forge furnace after raw material enters preheating, starts to forge, initial forging temperature control exists 1150-1200 DEG C, final forging temperature is not less than 850 DEG C, and using ten word directions, jumping-up pulls out repeatedly for three times, then by forging by finish-forging Temperature is air-cooled to room temperature；
B. machining removes its oxide skin；
C. it is heat-treated：Workpiece is heated up to 1050 ± 10 DEG C being preheated in 400 ± 10 DEG C of heating furnace, heat time t ≤ 4.0h, more than 4.0h is then incubated, then quenches water cooling.
As a kind of preferable scheme, when starting quenching, water temperature needs to be limited in less than 23 DEG C；When terminating quenching, water temperature Need to be limited in less than 26 DEG C.
The beneficial effects of the invention are as follows：Because phosphorus content is very low in F60 two phase stainless steels, C≤0.030%, in order to ensure The corrosion resisting property of steel, using the solution strengthening effect of Cr, Mo, N alloying element, to improve the intensity of steel.
Cr contents are 22~23%, and stable passivating film can be formed in steel, is ferrite former, if content mistake Height, while steel yield strength is improved, it can causeThe precipitation of brittlement phase, makes the plasticity and toughness of steel reduce；
Ni elements adjust the performance and corrosion resistance of steel, such as significantly improve Ni contents, ferrite content can reduce, and can trigger fragility Mutually separate out, reduce the toughness and yield strength of steel, so the control of Ni contents is in the range of 4.5~5.5%；
Mo elements improve the stability of passivating film, increase the etch resistant properties of steel.But the Mo contents of steel are significantly improved, it can promote MakeBrittlement phase separates out, and the fragility of steel is improved, so Mo is controlled in the range of 3.0~3.5% in steel；
N is the element of stable austenite in steel, promotes the uniformity and spot corrosion index of passivating film, improves pitting resistance Can, separated out by particle, improve the intensity of steel.
F60 two phase stainless steels are in forging deformation, if forging temperature is too high or final forging temperature is too low, steel in ferrite and It is plastically deformed in austenite two-phase structure, because ferritic phase and austenite phase have different resistances of deformation, ferrite Phase liquidity limit is less than austenite phase, and ferrite transformation situation and recrystallization speed are different, and the processing of austenite phase is hard Change will be faster than ferritic phase, when two-phase together when deform simultaneously when, it is necessary to produce very big inhomogeneities, cause forging to produce Very big internal stress, when inner-stress value is more than the rupture strength of metal, then cause forging cracking defect；And F60 ferrites --- The thermal pressure processing characteristics of austenitic duplex stainless steel is poor, easy during forging because the heterogeneous structure thermoplasticity of forged steel is low Cracked on the interface of two-phase (γ and α phases), if forming temperature is too low, deformation can be gathered in weaker and low plasticity iron In ferritic, ferrite in deformed area is caused to ftracture；If forming temperature is too high, ferrite becomes very soft, thereby increases and it is possible to occurred Hot tear crack phenomenon；So initial forging temperature control, at 1150-1200 DEG C, final forging temperature is not less than 850 DEG C.
If the cooling after forged of F60 two phase stainless steels is too slow, analyses and show from steelIt brittlement phase, can show the toughness plasticity of steel Writing reduces, along with the thermal (temperature difference) stress in forging cooling procedure, it is also possible to cause forging crack；It is air-cooled to so being taken after forging Room temperature, can effectively it suppressThe precipitation of brittlement phase.
The solution treatment of F60 two phase stainless steels, realized by heating, being incubated and cool down, used to change forging Alloying component in steel in the ratio of two-phase, two-phase, remove other precipitated phases so that forging obtain excellent mechanical property and Decay resistance.In heating process, steel starts to separate out in 600 DEG C~700 DEG CBrittlement phase, when being heated to 750 DEG C~900 DEG C When,It is mutually a large amount of to separate out, it is steelThe sensitivity interval mutually largely separated out, so this method uses is being preheated to 400 by workpiece 1050 ± 10 DEG C are heated up in ± 10 DEG C of heating furnace, heat time t≤4.0h, is then incubated 4.0h, to avoid forging 600 DEG C~900 DEG C within the temperature range of long-time heating, reduceBrittlement phase separates out.
There are maximum (i.e. ferrite content is minimum), 1070 DEG C of appearance in 1000 DEG C of microhardnesses in F60 two phase stainless steels Minimum value (i.e. ferrite content is maximum), when ferrite content is 50%, fracture-sensitive is minimum；But work as ratio of ferrite mistake Height, during in continuous net-shaped distribution, then the anti intercrystalline corrosion ability of steel is worst, so control heating-up temperature, to reach suitable two Phase Proportion, so as to prevent α phase agglomerations particularly significant, by heating and temperature control at 1050 DEG C in this method.
After the solid solution insulation of F60 two phase stainless steels, it is necessary to quickly cooled down, this method, so can be with using water cooling is quenched PreventionThe precipitation of brittlement phase.Brittlement phase is hard and crisp, has a strong impact on the corrosion resisting property of steel, and a small amount of presence can also destroy steel Plasticity and toughness.Solution treatment can be such that forging precipitated phase is dissolved into matrix, by the quick cooling procedure after solid solution, with tiny micro- The mode of light disperse is analysed again to be shown, Intensive intervention body, and improves the toughness and resistance to corrosion of steel, to meet forging products military service bar Requirement under part.
Embodiment
Specific embodiments of the present invention are described below in detail.
A kind of deep-sea oil extracting ship F60 two phase stainless steels pipe joint forging feedstock production process, its step are：
A. the components by weight percent is taken to be：C:≤ 0.3%；Si:≤ 1.00%；Mn:≤ 2.00%；P:≤ 0.03%；S:≤ 0.02%；Cr:22-23%；Ni:4.5-6.5%；Mo:3.00-3.50%；N:0.14-0.20%；Remaining is Fe and other are residual The base steel of remaining element is to be heated to 1200 DEG C in the forge furnace after raw material enters preheating, starts to forge, initial forging temperature control exists 1150-1200 DEG C, final forging temperature is not less than 850 DEG C, and using ten word directions, jumping-up pulls out repeatedly for three times, then by forging by finish-forging Temperature is air-cooled to room temperature；
B. machining removes its oxide skin；
C. it is heat-treated：Workpiece is heated up to 1050 ± 10 DEG C being preheated in 400 ± 10 DEG C of heating furnace, heat time t ≤ 4.0h, more than 4.0h is then incubated, then quenches water cooling, when starting quenching, water temperature needs to be limited in less than 23 DEG C；End is quenched When fiery, water temperature needs to be limited in less than 26 DEG C.
The some technological requirements and test data such as following table of the forging of this method production：
The principle and its effect of the above embodiments only illustrative the invention, and the implementation that part uses Example, not for the limitation present invention；It should be pointed out that for the person of ordinary skill of the art, wound of the present invention is not being departed from On the premise of making design, various modifications and improvements can be made, these belong to protection scope of the present invention.

Claims (1)

1. a kind of deep-sea oil extracting ship F60 two phase stainless steels pipe joint forging feedstock production process, its step are：
A. the components by weight percent is taken to be：C:≤ 0.3%；Si:≤ 1.00%；Mn:≤ 2.00%；P:≤ 0.03%；S:≤ 0.02%； Cr:22-23%；Ni:4.5-6.5%；Mo:3.00-3.50%；N:0.14-0.20%；Remaining is Fe and other residual elements Base steel is to be heated to 1200 DEG C in the forge furnace after raw material enters preheating, starts to forge, initial forging temperature is controlled in 1150-1200 DEG C, final forging temperature is not less than 850 DEG C, and using ten word directions, jumping-up pulls out repeatedly for three times, then by forging by final forging temperature air cooling To room temperature；
B. machining removes its oxide skin；
C. it is heat-treated：Workpiece is heated up to 1050 ± 10 DEG C being preheated in 400 ± 10 DEG C of heating furnace, heat time t≤ 4.0h, more than 4.0h is then incubated, then quenches water cooling, when starting quenching, water temperature needs to be limited in less than 23 DEG C；Terminate quenching When, water temperature needs to be limited in less than 26 DEG C.
CN201610466477.8A 2016-06-24 2016-06-24 A kind of deep-sea oil extracting ship F60 two phase stainless steels pipe joint forging feedstock production process Active CN106119732B (en)

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CN109385507B (en) * 2018-12-20 2020-06-09 四川民盛特钢锻造有限公司 Heat treatment method of ultra-low carbon duplex stainless steel pot body
CN111558680B (en) * 2020-06-22 2021-12-21 无锡派克新材料科技股份有限公司 Manufacturing method of large-section F53 solid forging
CN112941400A (en) * 2021-01-29 2021-06-11 无锡市法兰锻造有限公司 Phase proportion control method for duplex stainless steel
CN113523166A (en) * 2021-07-21 2021-10-22 苏州雷格姆海洋石油设备科技有限公司 Production process of 25% Cr large-wall-thickness super binocular stainless steel forging for deep sea connector
CN115896633A (en) * 2022-12-13 2023-04-04 无锡市法兰锻造有限公司 Manufacturing process of hairline-free austenitic stainless steel forging for nuclear power station

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100999806A (en) * 2006-12-31 2007-07-18 许季祥 High performance corrosion-proof rare earth super strength dual-phase stainless steel and its smelting tech.
CN102605270A (en) * 2011-12-31 2012-07-25 上海加宁新技术研究所 Manufacturing method of super double-phase stainless steel impeller shaft
CN102676766A (en) * 2012-06-05 2012-09-19 米云霞 Thermal treatment method for improving low-temperature impact toughness of austenite-ferrite stainless steel
CN105385821A (en) * 2015-10-21 2016-03-09 苏州雷格姆海洋石油设备科技有限公司 Raw material production method for equipment components under high-temperature and high-pressure environment in deep sea

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5145793B2 (en) * 2007-06-29 2013-02-20 Ｊｆｅスチール株式会社 Martensitic stainless steel seamless pipe for oil well pipe and method for producing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100999806A (en) * 2006-12-31 2007-07-18 许季祥 High performance corrosion-proof rare earth super strength dual-phase stainless steel and its smelting tech.
CN102605270A (en) * 2011-12-31 2012-07-25 上海加宁新技术研究所 Manufacturing method of super double-phase stainless steel impeller shaft
CN102676766A (en) * 2012-06-05 2012-09-19 米云霞 Thermal treatment method for improving low-temperature impact toughness of austenite-ferrite stainless steel
CN105385821A (en) * 2015-10-21 2016-03-09 苏州雷格姆海洋石油设备科技有限公司 Raw material production method for equipment components under high-temperature and high-pressure environment in deep sea

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Address after: 215628 Suzhou sea pot new energy equipment Limited by Share Ltd of Nanfeng village, Nanfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province, Limited by Share Ltd

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Address before: 215628 Suzhou sea pot new energy equipment Limited by Share Ltd of Nanfeng village, Nanfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province, Limited by Share Ltd

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