CN107805756A - A kind of cryogenic steel, low-temperature pressure container and steel for pipe pipe and preparation method thereof - Google Patents

A kind of cryogenic steel, low-temperature pressure container and steel for pipe pipe and preparation method thereof Download PDF

Info

Publication number
CN107805756A
CN107805756A CN201610815320.1A CN201610815320A CN107805756A CN 107805756 A CN107805756 A CN 107805756A CN 201610815320 A CN201610815320 A CN 201610815320A CN 107805756 A CN107805756 A CN 107805756A
Authority
CN
China
Prior art keywords
steel
pipe
low
classes
pressure container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610815320.1A
Other languages
Chinese (zh)
Inventor
王金光
尹青锋
张迎恺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinopec Engineering Inc
Sinopec Engineering Group Co Ltd
Original Assignee
Sinopec Engineering Inc
Sinopec Engineering Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sinopec Engineering Inc, Sinopec Engineering Group Co Ltd filed Critical Sinopec Engineering Inc
Priority to CN201610815320.1A priority Critical patent/CN107805756A/en
Publication of CN107805756A publication Critical patent/CN107805756A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C22C38/001—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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The invention provides a kind of cryogenic steel, low-temperature pressure container and steel for pipe pipe and preparation method thereof, and on the basis of the weight of the cryogenic steel, the steel contains the following chemical composition of percentage：C：0.09~0.16%, Si：0.15~0.50%, Mn：0.85~1.70%, S：≤ 0.010%, P：≤ 0.020%, Ni：0.30~0.86%, Nb：≤ 0.05%, Cu：≤ 0.30%, V：≤ 0.05%, Als：0.015~0.080%, [N]≤70ppm, [O]≤30ppm, [H]≤2ppm, remaining is Fe and inevitable impurity, wherein, the content of each component is not 0.The low-temperature pressure container and steel for pipe pipe resistance to low temperature prepared using above-mentioned cryogenic steel is good：There is higher toughness, impact absorbing energy KV2 >=65J of steel pipe in 60 DEG C of (containing) temperatures above.

Description

A kind of cryogenic steel, low-temperature pressure container and steel for pipe pipe and preparation method thereof
Technical field
The present invention relates to the pressure vessel of the applications such as petrochemical industry, coal chemical industry and pressure pipeline field, and in particular to a kind of Cryogenic steel, low-temperature pressure container and steel for pipe pipe and preparation method thereof.
Background technology
As the country is increasing to the demand of clean energy resource, the device of oil refining, chemical industry, coal chemical industry, coal gas and LNG Largely start.In these devices, pressure vessel, heat exchanger and pressure pipeline account for more than the 60% of total equipment investment, therefore, above-mentioned Each part prepares basic demand of the material except meeting its application, it should also be taken into account that its economy.In addition, such device is general A feature all be present：Worst cold case.In order to tackle this environment, developed both at home and abroad -40 DEG C, -45 DEG C, -50 DEG C, - The low temperature low alloy steel of 70 DEG C, -100 DEG C ranks, but lack the steel pipe of -60 DEG C of ranks only, this is to engineering design, system Make, purchase and construction is made troubles.There are problems that excessively using sometimes, as -60 DEG C of ranks can be selected originally, but must not - 70 DEG C of ranks are not selected, cause unnecessary waste.
Patent document CN104651717A discloses a kind of seamless pipeline steel tube of X80 steel-grade low temperature containing rare earth, from X80 It is the pipe line steel for oil gas long-distance transmissions that this trade mark, which can be seen that the patent, is to improve low temperature properties by adding rare earth The high tensile pipeline steel of energy, it is well known that after quenching raising intensity, improving cryogenic property is difficult, if the invention does not add Add rare earth, intensity improved using quenching again, phosphorus content is again so high, want to reach -60 DEG C of so high ballistic works not may, And in order to reach -60 DEG C of impact flexibility requirements, using normalizing process, intensity rank can not possibly then reach X80 ranks.Rare earth metal Use although solve above mentioned problem, but its price is relatively expensive so that cost of investment increase.
Ni systems steel is the Steel material that current this area is widely used in low temperature, and this kind of tube material is improved by adding Ni Low-temperature flexibility, but it still suffers from the problems such as low temperature intensity is low, and toughness and plasticity can not get both, expensive.Therefore, it is necessary to open Send out the cryogenic steel based on Ni systems steel a kind of.
The content of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of cryogenic steel, low-temperature pressure to hold Device and steel for pipe pipe and preparation method thereof.The low-temperature pressure container that is prepared by the cryogenic steel and steel for pipe pipe it is resistance to low Temperature is functional：There is higher toughness in -60 DEG C of temperatures above.
According to the first aspect of the invention, it is described on the basis of the weight of the steel the invention provides a kind of cryogenic steel Steel contains the following chemical composition of percentage：C：0.09~0.16%, Si：0.15~0.50%, Mn：0.85~ 1.70%, S：≤ 0.010%, P：≤ 0.020%, Ni：0.30~0.86%, Nb：≤ 0.05%, Cu：≤ 0.30%, V：≤ 0.05%, Als：0.015~0.080%, [N]≤60ppm, [O]≤20ppm, [H]≤2ppm, remaining is for Fe and unavoidably Impurity, wherein, the content of each component is not 0.
According to the second aspect of the invention, the invention provides a kind of low temperature prepared using cryogenic steel as described above Pressure vessels and pipes steel pipe, the prior austenite grain size of the steel pipe is 6 grades or thinner.
According to the third aspect of the invention we, the invention provides the system of a kind of low-temperature pressure container and steel for pipe pipe Preparation Method, this method comprise the following steps：
1) refining of steel：Raw material is smelted, then carries out external refining, finally carries out application of vacuum；
2) steel pipe forming：Pipe is manufactured by continuous casting or the method for molding, then is molded using rolling；
3) it is heat-treated：The condition of delivery of shaping steel tube is normalizing or normalizing+tempering.
Mechanical property using steel pipe made from the cryogenic steel of the present invention includes：Wherein, room-temperature mechanical property includes：Bend Intensity >=415MPa is taken, tensile strength is 550~630MPa, Longitudinal extending rate A50mm>=36%.When the diameter of phi of the steel pipe >=76mm, and during wall thickness >=14mm, impact absorbing energy KV2 >=65J of the steel pipe at -60 DEG C.The low temperature pressure of the present invention Force container and steel for pipe pipe have higher toughness in -60 DEG C of temperatures above.
Embodiment
To make the present invention easier to understand, the present invention is described in detail below in conjunction with embodiment, these embodiments are only Serve illustrative, be not intended to limit the invention.
According to the first aspect of the invention, it is described on the basis of the weight of the steel the invention provides a kind of cryogenic steel Steel contains the following chemical composition of percentage：C：0.09~0.16%, Si：0.15~0.50%, Mn：0.85~ 1.70%, S：≤ 0.010%, P：≤ 0.020%, Ni：0.30~0.86%, Nb：≤ 0.05%, Cu：≤ 0.30%, V：≤ 0.05%, Als：0.015~0.080%, [N]≤60ppm, [O]≤20ppm, [H]≤2ppm, remaining is for Fe and unavoidably Impurity, wherein, the content of each component is not 0.
Preferably, cryogenic steel of the invention, on the basis of the weight of the steel, the steel contains percentage Following chemical composition：C：0.10~0.15%, Si：0.15~0.45%, Mn：1.05~1.58%, S：≤ 0.009%, P：≤ 0.016%, Ni：0.42~0.76%, Nb：≤ 0.04%, Cu：≤ 0.28%, V：≤ 0.03%, Als：0.018~ 0.065%, [N]≤50ppm, [O]≤15ppm, [H]≤1.5ppm, remaining is Fe and inevitable impurity, wherein, each group The content divided is not 0.
According to the present invention, the effect of main chemical compositions is as follows in the cryogenic steel：
C：Carbon can be dissolved by gap and improve hardness of steel, be the maximally effective element of reinforced structure steel, and be also most to pass through The element of Ji, but carbon has detrimental effect to toughness, plasticity, weldability etc., therefore the obdurability based on steel, weldability etc. are each The matching of performance, while in order to reduce the wall thickness of pressure vessel and pressure pipeline as far as possible, C of the invention content control exists Between 0.09wt%~0.16wt%, preferably C content is 0.10wt%~0.15wt%.
Si：Silicon plays deoxidation in steel, also there is certain solid solution strengthening effect, silicon in addition to it can suppress manganese segregation, The Grain Boundary Segregation of phosphorus can also be suppressed, but silicone content is too high in steel steel fragility is occurred, in order to ensure toughness, Si of the invention Content control between 0.15wt%~0.50wt%, preferably Si content is 0.15wt%~0.45wt%.
Mn：Manganese is among the austenite stabilizing elements, while is also matrix strengthening element, can be improved by precipitation strength strong Degree, manganese can also improve the quenching degree of material, too low, and intensity does not reach requirement, the too high toughness for then influenceing material, and silicon It is present in certain proportion in steel with manganese, also helps suppression segregation each other, therefore, Mn content is controlled in 0.85wt% In the range of~1.70wt%, preferably Mn content is 1.05wt%~1.58wt%.
S、P：Belong to impurity element in steel, content should be reduced as far as possible.Sulphur easily forms precipitate sulphur with metallic element manganese Change manganese, reduce low-temperature flexibility, S contents are controlled in below 0.010wt%, preferably S content≤0.009wt%；Phosphorus is easily in crystalline substance Boundary's segregation, crystal boundary resistance to crack extension ability is reduced, reduce low-temperature flexibility, P content is controlled in below 0.020wt%, preferably P Content≤0.016wt%.
Ni：Nickel is non-carbide former, the effect of solution strengthening is primarily served in steel, especially to material low Stability under temperature is most important, is reduction ductile-brittle transition temperature element best in metallic element, is advantageous to improve material Quenching degree and intensity, while the cold plasticity of material can also be improved, for economics, it is by Ni content control 0.30wt%~0.86wt%, preferably Ni content are 0.42wt%~0.76wt%.
Nb：The carboritride strain induced precipitate of niobium plays precipitation enhancement, while prevents brilliant in hot procedure Grain is grown up.If its content is higher, continuous casting steel billet easily splits, and influences the lumber recovery of steel pipe, present invention control Nb content≤ 0.05wt%, preferably Nb content≤0.04wt%.
Cu：Copper with stable austenite, can significantly improve the activity of carbon, promote the precipitation of alloy carbide, so as to The effect of refinement transformation tissue and precipitation strength is waved in sending and receiving, by the control of Cu content in the range of≤0.30wt%, preferably Cu Content≤0.28wt%.
V：Vanadium dramatically increases the reheat cracking susceptibility of forging steel pipe, while the reciprocation between the niobium in steel, plays The effect of niobium vanadium complex intensifying, so as to compensate for the decline situation of the steel strength caused by carbon content decline in steel, limit V Content≤0.05wt%, preferably V content≤0.03wt%.
Als：Dissolved aluminum has the function that crystal grain thinning, in order to reduce the oxygen content in steel in steel-smelting production process, commonly uses The deoxidation materials such as aluminium, barium, calcium, silicon, manganese (or its composite alloy) react into oxide clinker with oxygen and float to molten steel upper strata And the oxygen content in steel is reduced, wherein aluminium is excellent deoxidier, and aluminium easily reacts generation Al with oxygen2O3(very small amount aluminium nitride), together When there is part pure aluminum to dissolve in steel, this part pure aluminum can by acid dissolving be referred to as dissolved aluminum, the present invention control Als content exist Within the scope of 0.015wt%~0.080wt%, preferably Als content is 0.018wt%~0.065wt%.
[N]、[O]、[H]：Nitrogen, oxygen and aluminium easily form high-melting-point precipitate aluminium nitride and aluminum oxide, and precipitate is straight Footpath is larger, easily causes stress concentration near precipitate and turns into formation of crack, has a strong impact on the low-temperature flexibility of matrix, the present invention Content≤the 60ppm, preferably [N] of control [N] content≤50ppm, the preferably content≤20ppm of [O], the content of [O]≤ 15ppm, the content of hydrogen also should be controlled strictly, be allowed to be in alap level, and the content of present invention control [H]≤ 2ppm, preferably [H] content≤1.5ppm.
, according to the invention it is preferred to each component in scope can further improve the steel pipe prepared using cryogenic steel in room Yield strength, tensile strength and Longitudinal extending rate under temperature；And impact absorbing energy of the steel pipe at -60 DEG C.
According to the present invention, A classes, B classes, C classes, D classes and DS type impurities that the steel contains generally are not more than 0.5 grade； Wherein, thick, the thin serial sum of A classes, B classes, C classes and D type impurities is generally not more than 1.5 grades.
Wherein, the concept of A classes, B classes, C classes, D classes and DS type impurities is known to those skilled in the art.Refer specifically to It is：A classes are sulfide, and B classes are aluminum oxide, and C classes are silicate, and D classes are spherical oxide, and DS classes are that individual particle is spherical.
According to the second aspect of the invention, the invention provides low-temperature pressure prepared by the cryogenic steel described in a kind of use Container and steel for pipe pipe, the prior austenite grain size of the steel pipe can be 6 grades or thinner.
According to the low-temperature pressure container and steel for pipe pipe of the present invention, the room-temperature mechanical property of the steel pipe includes：Surrender Intensity (Rel)≥415MPa；Tensile strength (Rm) it is 550~630MPa；Longitudinal extending rate A50mm>=36% (gauge length 50mm).
According to the present invention, as diameter of phi >=76mm of the steel pipe, and during wall thickness >=14mm, the steel pipe carries out Charpy (V Type breach) impact test when, impact absorbing energy KV2 >=65J of the steel pipe at -60 DEG C.
According to the third aspect of the invention we, the invention provides the system of a kind of low-temperature pressure container and steel for pipe pipe Preparation Method, this method comprise the following steps：
1) refining of steel：Raw material is smelted, then carries out external refining, finally carries out application of vacuum；
2) steel pipe forming：Pipe is manufactured by continuous casting or the method for molding, then is molded using rolling；
3) it is heat-treated：The condition of delivery of shaping steel tube is normalizing or normalizing+tempering.
Normally, in step 1), the raw material can use electric arc furnaces or oxygen coverter to be smelted, with specific reference to raw material Species select.
In step 2), the rolling can be hot rolling (expansion) or cold rolling (pulling out).
In step 3), the temperature of the normalizing can be 890~940 DEG C, and the temperature of tempering can be 580~640 DEG C.
External refining and application of vacuum of the present invention can be carried out by this area common process and equipment.
The present invention will be described in detail by way of examples below.
Embodiment 1
A kind of low-temperature pressure container and steel for pipe pipe, specification are Φ 273 × 13, the preparation method of the steel pipe include with Lower step：
1) refining of steel：Raw material is smelted using electric arc furnaces, then carries out LF external refinings, finally carries out VD vacuum and takes off Gas, the chemical composition of obtained steel are as shown in table 1；
2) steel pipe forming：Pipe is manufactured by continuous casting process first, then is molded using hot rolling (expansion)；
3) it is heat-treated：The condition of delivery of shaping steel tube is normalizing+tempering, and the phase transition temperature Ac1 of steel pipe is 690 after measured DEG C, Ac3 is 864 DEG C, and Ar1 is 580 DEG C, and Ar3 is 785 DEG C, and normalizing temperature selects 890 DEG C, and temperature selects 630 DEG C.
Embodiment 2
Embodiment with embodiment 1, wherein, the chemical composition of obtained steel is as shown in table 1, normalizing temperature select 910 DEG C, Temperature selects 615 DEG C.
Embodiment 3
Embodiment with embodiment 1, wherein, the chemical composition of obtained steel is as shown in table 1, normalizing temperature select 930 DEG C, Temperature selects 590 DEG C.
Embodiment 4
Embodiment with embodiment 1, wherein, the chemical composition of obtained steel is as shown in table 1, and the condition of delivery is normalizing, just Fiery temperature selects 890 DEG C.
Comparative example 1
Embodiment is with embodiment 1, and difference is, the chemical composition of obtained steel is as shown in table 1.
Comparative example 2
Embodiment is with embodiment 1, and difference is, the chemical composition of obtained steel is as shown in table 1.
The chemical composition of steel for steel pipes is as shown in table 1 made from above-described embodiment and comparative example.
Table 1
Embodiment and the room-temperature mechanical property of steel pipe and prior austenite grain size made from comparative example are as shown in table 2.
Table 2
* tensile sample is longitudinal direction.
Chemical composition, room-temperature mechanical property and the grain size number evidence of steel pipe obtained by embodiment in Tables 1 and 2 and comparative example Understanding, the steel pipe prepared using the cryogenic steel of the present invention has >=415MPa a yield strength, >=564MPa tensile strength, >=36% room temperature elongation percentage, is superior to comparative example.
The prior austenite grain size that method according to GB/T6394 determines embodiment steel pipe is 6.5 grades or thinner.
In addition, measure inclusion content in each steel pipe according to B methods in GB/T10561, wherein, A classes, B classes, C classes, D classes and DS type impurities are no more than 0.5 grade；Wherein, thick, the thin serial sum of A classes, B classes, C classes and D type impurities is no more than 1.0 Level.
Carry out Charpy (v-notch) Impulse Test Result for the steel pipe that embodiment is prepared with comparative example is as shown in table 3.
Table 3
* impact specimen is laterally, shown KV2 values is the average value of three samples.
As shown in Table 3, steel pipe of the invention has higher toughness under cryogenic, disclosure satisfy that the need of practical application Will, at -60 DEG C, impact absorbing energy KV2 >=65J of steel pipe of the invention.
It is described above embodiments of the invention, described above is exemplary, and non-exclusive, and also not It is limited to disclosed embodiment.In the case of the scope and spirit without departing from illustrated embodiment, for the art Many modifications and changes will be apparent from for those of ordinary skill.

Claims (10)

  1. A kind of 1. cryogenic steel, it is characterised in that on the basis of the weight of the steel, the steel contain percentage with Lower chemical composition：C：0.09~0.16%, Si：0.15~0.50%, Mn：0.85~1.70%, S：≤ 0.010%, P：≤ 0.020%, Ni：0.30~0.86%, Nb：≤ 0.05%, Cu：≤ 0.30%, V：≤ 0.05%, Als：0.015~ 0.080%, [N]≤60ppm, [O]≤20ppm, [H]≤2ppm, remaining is Fe and inevitable impurity, wherein, each component Content be 0.
  2. 2. cryogenic steel as claimed in claim 1, wherein, on the basis of the weight of the steel, the steel contains percentage by weight The following chemical composition of number meter：C：0.10~0.15%, Si：0.15~0.45%, Mn：1.05~1.58%, S：≤ 0.009%, P：≤ 0.016%, Ni：0.42~0.76%, Nb：≤ 0.04%, Cu：≤ 0.28%, V：≤ 0.03%, Als： 0.018~0.065%, [N]≤50ppm, [O]≤15ppm, [H]≤1.5ppm, remaining is Fe and inevitable impurity, its In, the content of each component is not 0.
  3. 3. cryogenic steel as claimed in claim 1 or 2, wherein, A classes, B classes, C classes, D classes and the DS classes that the steel contains are mingled with Thing is no more than 0.5 grade；Wherein, thick, the thin serial sum of A classes, B classes, C classes and D type impurities is no more than 1.5 grades.
  4. 4. low-temperature pressure container and pipeline prepared by a kind of cryogenic steel using as described in any one in claims 1 to 3 With steel pipe, it is characterised in that the prior austenite grain size of the steel pipe is 6 grades or thinner.
  5. 5. low-temperature pressure container as claimed in claim 4 and steel for pipe pipe, wherein, the room-temperature mechanical property bag of the steel pipe Include：Yield strength >=415MPa；Tensile strength is 550~630MPa；Longitudinal extending rate A50mm>=36%.
  6. 6. low-temperature pressure container as claimed in claim 4 and steel for pipe pipe, wherein, when the steel pipe diameter of phi >= 76mm, and during wall thickness >=14mm, impact absorbing energy KV2 >=65J of the steel pipe at -60 DEG C.
  7. 7. the preparation method of the low-temperature pressure container and steel for pipe pipe in a kind of claim 4~6 described in any one, it is special Sign is that this method comprises the following steps：
    1) refining of steel：Raw material is smelted, then carries out external refining, finally carries out application of vacuum；
    2) steel pipe forming：Pipe is manufactured by continuous casting or the method for molding, then is molded using rolling；
    3) it is heat-treated：The condition of delivery of shaping steel tube is normalizing or normalizing+tempering.
  8. 8. the preparation method of low-temperature pressure container as claimed in claim 7 and steel for pipe pipe, wherein, it is described in step 1) Raw material is smelted using electric arc furnaces or oxygen coverter.
  9. 9. the preparation method of low-temperature pressure container as claimed in claim 7 and steel for pipe pipe, wherein, it is described in step 2) Rolling is hot rolling or cold rolling.
  10. 10. the preparation method of low-temperature pressure container as claimed in claim 7 and steel for pipe pipe, wherein, it is described in step 3) The temperature of normalizing is 890~940 DEG C, and the temperature of tempering is 580~640 DEG C.
CN201610815320.1A 2016-09-09 2016-09-09 A kind of cryogenic steel, low-temperature pressure container and steel for pipe pipe and preparation method thereof Pending CN107805756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610815320.1A CN107805756A (en) 2016-09-09 2016-09-09 A kind of cryogenic steel, low-temperature pressure container and steel for pipe pipe and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610815320.1A CN107805756A (en) 2016-09-09 2016-09-09 A kind of cryogenic steel, low-temperature pressure container and steel for pipe pipe and preparation method thereof

Publications (1)

Publication Number Publication Date
CN107805756A true CN107805756A (en) 2018-03-16

Family

ID=61569729

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610815320.1A Pending CN107805756A (en) 2016-09-09 2016-09-09 A kind of cryogenic steel, low-temperature pressure container and steel for pipe pipe and preparation method thereof

Country Status (1)

Country Link
CN (1) CN107805756A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110592462A (en) * 2019-09-19 2019-12-20 舞阳钢铁有限责任公司 Steel plate for low-temperature equipment and production method thereof
CN113061811A (en) * 2021-03-17 2021-07-02 攀钢集团江油长城特殊钢有限公司 LNG (liquefied Natural gas) marine structural steel and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101300365A (en) * 2005-09-29 2008-11-05 海德尔有限责任公司 Methods for heat treating thick-walled forgings
CN101871077A (en) * 2010-06-08 2010-10-27 武汉钢铁(集团)公司 Normalizing type high-strength pressure vessel steel and manufacturing method thereof
CN104561772A (en) * 2014-12-26 2015-04-29 南阳汉冶特钢有限公司 Ultralow-temperature steel plate with thickness of 130-150 mm and production method for ultralow-temperature steel plate
CN104726787A (en) * 2013-12-23 2015-06-24 鞍钢股份有限公司 Favorable-low-temperature-toughness high-strength pressure vessel thick plate and production method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101300365A (en) * 2005-09-29 2008-11-05 海德尔有限责任公司 Methods for heat treating thick-walled forgings
CN101871077A (en) * 2010-06-08 2010-10-27 武汉钢铁(集团)公司 Normalizing type high-strength pressure vessel steel and manufacturing method thereof
CN104726787A (en) * 2013-12-23 2015-06-24 鞍钢股份有限公司 Favorable-low-temperature-toughness high-strength pressure vessel thick plate and production method thereof
CN104561772A (en) * 2014-12-26 2015-04-29 南阳汉冶特钢有限公司 Ultralow-temperature steel plate with thickness of 130-150 mm and production method for ultralow-temperature steel plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110592462A (en) * 2019-09-19 2019-12-20 舞阳钢铁有限责任公司 Steel plate for low-temperature equipment and production method thereof
CN110592462B (en) * 2019-09-19 2021-04-06 舞阳钢铁有限责任公司 Steel plate for low-temperature equipment and production method thereof
CN113061811A (en) * 2021-03-17 2021-07-02 攀钢集团江油长城特殊钢有限公司 LNG (liquefied Natural gas) marine structural steel and preparation method thereof

Similar Documents

Publication Publication Date Title
US10760149B2 (en) Highly corrosion-resistant, high strength, A1-containing weathering steel plate and process of manufacturing same
AU2008221597B2 (en) Low alloy steel, seamless steel oil country tubular goods, and method for producing seamless steel pipe
EP2865777B1 (en) High-strength stainless steel seamless pipe having excellent corrosion resistance for oil well, and method for manufacturing same
CN107619994B (en) A kind of anti-CO2/H2The seamless line pipe and its manufacturing method of S and sulfate reducing bacteria corrosion
JP4379550B2 (en) Low alloy steel with excellent resistance to sulfide stress cracking and toughness
KR102364473B1 (en) Steel for low-temperature pressure vessel and manufacturing method thereof
CN110168124B (en) Duplex stainless steel and method for producing same
CN107805759A (en) A kind of low temperature pressure vessel steel plate and preparation method thereof
EP3202938B1 (en) High-strength steel material for oil wells, and oil well pipe
CA2929734C (en) Ni-cr alloy material and seamless oil country tubular goods using the same
EP2133443A1 (en) Low alloy steel for the pipe for oil well use and seamless steel pipe
WO2005007915A1 (en) Martensitic stainless steel
EP2194152B1 (en) High-strength cr-ni alloy product and seamless oil well pipes made by using the same
WO1999041422A1 (en) Corrosion resisting steel and corrosion resisting oil well pipe having high corrosion resistance to carbon dioxide gas
WO2009004741A1 (en) Martensitic stainless-steel seamless pipe for oil well pipe and process for producing the same
JP5499575B2 (en) Martensitic stainless steel seamless pipe for oil well pipe and method for producing the same
CN104928602A (en) Pipeline steel, wide and thick plate, resistant to H2S corrosion, and production method thereof
WO2015033518A1 (en) Method for producing high-strength stainless steel pipe, and high-strength stainless steel pipe
CN101054649A (en) Sulfur erosion resisting steel and smelting method thereof
CN102144041B (en) Seamless pipe of martensitic stainless steel for oil well pipe and process for producing same
US20230167522A1 (en) High Strength, High-Temperature Corrosion Resistant Martensitic Stainless Steel and Manufacturing Method Therefor
CN107805756A (en) A kind of cryogenic steel, low-temperature pressure container and steel for pipe pipe and preparation method thereof
CN110273101A (en) A kind of H grade pumping rod and preparation method thereof
CN106498279B (en) A kind of anti-CO2The economical X65 pipe line steels of low Cr and production method of corrosion
JP2001073086A (en) Seamless steel tube with high toughness and high corrosion resistance

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20180316