CN110527773A - A kind of production method of petroleum casing pipe TG22 steel band - Google Patents
A kind of production method of petroleum casing pipe TG22 steel band Download PDFInfo
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- CN110527773A CN110527773A CN201910892490.3A CN201910892490A CN110527773A CN 110527773 A CN110527773 A CN 110527773A CN 201910892490 A CN201910892490 A CN 201910892490A CN 110527773 A CN110527773 A CN 110527773A
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- steel band
- casing pipe
- petroleum casing
- roughing
- temperature
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 65
- 239000010959 steel Substances 0.000 title claims abstract description 65
- 239000003208 petroleum Substances 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000005096 rolling process Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000011575 calcium Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 9
- 229910052791 calcium Inorganic materials 0.000 claims description 9
- 238000010079 rubber tapping Methods 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 7
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- 238000005275 alloying Methods 0.000 claims description 5
- 238000009749 continuous casting Methods 0.000 claims description 5
- 229910000592 Ferroniobium Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 0.000 claims description 3
- ZFGFKQDDQUAJQP-UHFFFAOYSA-N iron niobium Chemical compound [Fe].[Fe].[Nb] ZFGFKQDDQUAJQP-UHFFFAOYSA-N 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000010955 niobium Substances 0.000 claims description 3
- 238000004886 process control Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000003129 oil well Substances 0.000 abstract description 6
- 230000003116 impacting effect Effects 0.000 abstract description 3
- 238000011161 development Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 206010054949 Metaplasia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
-
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- 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
- C22C38/02—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
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a kind of production methods of petroleum casing pipe TG22 steel band.The production method of petroleum casing pipe TG22 steel band of the invention, optimize each group content parameter and working condition, obtained petroleum casing pipe TG22 steel band intensity, tensile property and low-temperature impact-resistant good-toughness, improve the comprehensive performance of petroleum casing pipe TG22 steel band, be conducive to cope with oil well external force load impacting, be suitble to industrialized production.
Description
Technical field
The present invention relates to bushing installation technical field more particularly to a kind of petroleum casing pipe TG22 steel bands and its producer
Method.
Background technique
Increasing for the demand of the energy such as petroleum and natural gas with the continuous rapid development of society, the energy needs
Continuous growth, structural adjustment and the optimization asked, have driven the development in an all-round way of industrial gas oil.Oil well when oil exploitation
Depth be continuously increased, the tradition exploitation performances such as oil well casing strength do not adapt to deep-well low temperature environment.To developing one kind
High-intensitive and low temperature environment can be born, there is an urgent need for the petroleum casing pipe exploited for deep-well petroleum.
Currently, the development of China's deep-well and ultradeep well is more swift and violent, the petroleum casing pipe exploited for deep-well petroleum is proposed
While high quality requires, for manufacturing, the steel band of petroleum casing pipe of deep-well and ultradeep well is more next not to be able to satisfy existing need more
It wants, it would be highly desirable to which the steel band that plus load is able to satisfy product low-temperature impact toughness again can be born by developing one kind.Existing disclosed application
Number Chinese invention patent for being 201410690132.1, a kind of entitled J55 grade of steel SEW expansion sleeve and its manufacturing method introduction
Using addition Cr and B alloying element, quickly heated by the welding of one-step method steel belt molding, Quan Guanti Medium frequency induction, hot tensile strength
Tube reducing and the cooling novel grade of steel expansion sleeve for producing strong plasticity and meeting operation technique requirement of subsequent On-line Control.Add in its steel band
The alloying elements cr added easily cracks defect in casting machine process of billet withdrawal, reduces production efficiency, increases production cost.And
And current domestic steel mill's research and development are in the starting stage, R & D Level is irregular, and existing casing steel band Shortcomings include
The properties of product obtained after the heat treatment of later period tubulation are bad, and intensity is bad and development process can encounter low temperature impact properties not
Close, surface red oxide the defects of problem in addition the products of some enterprises be lower than in the performance of the product after tubulation is heat-treated
The case where lower limit, keeps the petroleum casing pipe of manufacture of poor quality, and for oil exploitation, that there are conevying efficiencies is poor, and the generation that is easy to burst apart is let out
Dew, set tube lifetime is short, increases cost of winning and maintenance maintenance cost.Based on the above situation, to Optimal Development nonpetroleum
Casing steel band improves petroleum casing pipe product quality, improves pipeline transportation quality, and the service life for extending pipeline transportation middle sleeve exists
Urgent need.
Therefore, those skilled in the art is dedicated to developing a kind of production method of petroleum casing pipe TG22 steel band, to change
Into the quality of petroleum casing pipe TG22.
Summary of the invention
In view of the drawbacks described above of the prior art, the technical problem to be solved by the present invention is to be used for petroleum set in the prior art
Pipe TG22 is bad with strip product performance, and intensity is bad, and low-temperature impact toughness is poor, surface easily has red oxide, makes to manufacture
Petroleum casing pipe it is of poor quality, conevying efficiency is poor, and be easy to burst apart generation leakage, and set tube lifetime is short, increase cost of oil production with
And maintenance maintenance cost.
To achieve the above object, the present invention provides a kind of production method of petroleum casing pipe TG22 steel band, including it is following
Step:
Step 1, converter smelting and LF furnace refine to obtain molten steel；
Step 2 uses the molten steel of step 1 pulling rate to obtain slab for 1.0m/min perseverance pulling rate progress continuous casting；
Step 3, the slab for obtaining step 2 heat in heating furnace, and 1190 DEG C~1230 DEG C of slab heating temperature, heating
Time is 180~300min, and soaking temperature is 1180 DEG C~1220 DEG C；Soaking time is 30~60min；
Slab after step 3 heating is carried out roughing and finish rolling by step 4；The roughing R1 opens 1 and 3 passage dephosphorization water,
Roughing R2 opens 5 passage dephosphorization water, and each passage de-scaling water pressure of roughing is >=20MPa；The first, second rack is opened in the finish rolling
Between de-scaling water；
Step 5 obtains the petroleum casing pipe TG22 steel band using the steel band of encryption laminar flow cooling treatment step 4；
Further, in the step 1, converter smelting carries out alloying using alloys such as manganese iron, ferrosilicon, and final deoxidizing uses
Ferro-aluminum deoxidation；Converter smelting tapping temperature is >=1620 DEG C；
Further, in the step 1, slag making, deoxidation, desulfurization and removal of inclusions are carried out in LF furnace when LF furnace refines
Process control is added the alloys such as manganese iron, ferrosilicon, ferro-niobium according to molten steel composition and finely tunes molten steel composition to target zone, feeds calcium line
Calcium treatment is carried out, carries out 8~10min of soft blow after Calcium treatment；
Further, in the step 2, when continuous casting, liquidus temperature is 1508 DEG C, the first packet Metal in Tundish degree of superheat
25~40 DEG C, 15~30 DEG C of other heat of molten steel degrees of superheat；
Further, in the step 3, the heating furnace tapping temperature is 1150~1190 DEG C；
Further, in the step 4, the roughing uses 1+5 mode or 3+5 mode,
Further, workpiece thickness is 46~60mm after the roughing；
Further, in step 4, the finish rolling finishing temperature is 815~845 DEG C；Coiling temperature is at 570~610 DEG C；
Further, after the finish rolling steel billet with a thickness of 6~9mm；
Further, in the step 5, the encryption laminar flow cooling treatment cooling velocity control is uniformly cold at 16~22 DEG C
But；
In better embodiment of the invention, in the step 4, roughing is to roll 1 passage using 1# roughing mill, and 2# is thick
5 passage of mill milling；
In another better embodiment of the invention, in the step 4, roughing is to roll 3 passages using 1# roughing mill,
2# roughing mill rolls 5 passages；
In better embodiment of the invention, in the step 4, finish rolling is the rolling of 2250mm finishing mill.
In better embodiment of the invention, petroleum set that the production method of the petroleum casing pipe TG22 steel band obtains
Pipe TG22 steel band, the component comprising following weight percent: C 0.23%；Si 0.17%；Mn 1.30%；P 0.01%；S
0.003%；Nb 0.02%；Als 0.030%；Ca 0.002%；
Using above scheme, the production method of petroleum casing pipe TG22 steel band disclosed by the invention has following technology effect
Fruit:
(1) production method of petroleum casing pipe TG22 steel band of the invention is rolled by controlled rolling and Controlled cooling process
Process optimization dephosphorization water operation processed, effectively reduces strip product oxide on surface, improves petroleum casing pipe TG22 steel band table
The intensity and low-temperature impact-resistant toughness of face quality and strip product, greatly improve the excellent comprehensive performance of product；Have
Broad application prospect；
(2) petroleum casing pipe TG22 manufacture using petroleum casing pipe TG22 of the invention with steel band is high-quality, and quality is stablized, drawing
It stretches performance and impact property is excellent, surface is not easy to be conducive to cope with oil well external force load impacting, application there are red oxide
Good in exploitation oil well effect, the service life is long, reduces costs, and social benefit is significant；
(3) production method of petroleum casing pipe TG22 steel band of the invention, method is simple, easy to operate, is suitble to industry metaplasia
It produces.
In conclusion the production method of petroleum casing pipe TG22 steel band of the invention, optimizes each group content parameter and production
Condition, obtained petroleum casing pipe TG22 steel band intensity, tensile property and low-temperature impact-resistant good-toughness, improves petroleum set
The comprehensive performance of pipe TG22 steel band is conducive to cope with oil well external force load impacting, is suitble to industrialized production.
Make below with reference to technical effect of the specific embodiment to design of the invention, specific structure and generation further
Illustrate, to fully understand the purposes, features and effects of the present invention.
Detailed description of the invention
Fig. 1 is the micro-organization chart of the steel band of the embodiment of the present invention 1；
Fig. 2 is the fracture apperance figure that comparative experimental example 3 of the present invention obtains steel band；
Specific embodiment
The preferred embodiment of the present invention introduced below keeps its technology contents more clear and is easy to understand.The present invention can be with
It is emerged from by many various forms of embodiments, protection scope of the present invention is not limited only to the implementation mentioned in text
Example.
The preparation of embodiment 1, petroleum casing pipe TG22 steel band
Alloying is carried out using alloys such as manganese iron, ferrosilicon, final deoxidizing carries out converter smelting, tapping temperature using ferro-aluminum deoxidation
It is >=1620 DEG C, guarantees that ingredient and temperature are coordinated to tap；If new tapping hole tapping temperature takes the circumstances into consideration to mention on the basis of temperature upper limit
It is 10~15 DEG C high；
The refining that slag making, deoxidation, desulfurization and removal of inclusions process control are carried out using LF furnace, is added according to molten steel composition
The alloys such as manganese iron, ferrosilicon, ferro-niobium finely tune molten steel composition to target zone, feed calcium line and carry out Calcium treatment, Calcium treatment finishes guarantee
The soft blow time is greater than 8~10min；
Using permanent pulling rate, pulling rate is that 1.0m/min carries out continuous casting, and liquidus temperature is 1508 DEG C, the first packet Metal in Tundish
25~40 DEG C of the degree of superheat, 15~30 DEG C of other heat of molten steel degrees of superheat obtain slab；
Using stepped heating stove heating slab, heating temperature is 1190~1230 DEG C, time inside furnace is 180~
300min, soaking temperature are 1180~1220 DEG C, 30~60min of soaking time, and tapping temperature is 1150~1190 DEG C, are then adopted
Roughing is carried out with 1+5 mode, roughing R1 opens 1 and 3 passage dephosphorization water, and roughing R2 opens 5 passage dephosphorization water, and each passage of roughing is removed
Squama water pressure is >=20MPa；The workpiece thickness that roughing obtains is 46~60mm；
Finish rolling uses F1~F7, and when finish rolling opens de-scaling water between the first, second rack, and finish rolling start rolling temperature is 980~
1050 DEG C, finishing temperature is 830 ± 15 DEG C, and coiling temperature is at 590 ± 20 DEG C, smart 6.0~9.0mm of outgoing gauge；
Using steel band after encryption laminar flow cooling finish rolling, cooling velocity is 16~22 DEG C uniformly cooling；Obtain with a thickness of
The petroleum casing pipe TG22 steel band of 7.34mm.
Component analysis is carried out with steel band to the petroleum casing pipe TG22 that embodiment 1 obtains, the results are shown in Table 1:
Table 1
| C | Si | Mn | P | S | Nb | Als | Ca |
| 0.23 | 0.17 | 1.30 | 0.010 | 0.003 | 0.02 | 0.030 | 0.0020 |
Impact property test is carried out with steel band at -10 DEG C to the petroleum casing pipe TG22 that embodiment 1 obtains and tensile property is surveyed
Examination, the results are shown in Table 2:
Table 2
Table 2 statistics indicate that, the casing steel band that the embodiment of the present invention is prepared, at -10 DEG C, impact property is good；It draws
It is excellent to stretch performance；
Microstructure observation is carried out with steel band to the petroleum casing pipe TG22 that the embodiment of the present invention 1 obtains, as shown in Figure 1；
Embodiment 2,
It is operated using the method similar with embodiment 1, roughing is carried out using 3+5 mode, be prepared with a thickness of 6mm reality
Apply the petroleum casing pipe TG22 steel band of example 2；
Comparative example 3, using general production method, roughing and finish rolling do not use de-scaling water pressure for the dephosphorization water behaviour of >=20MP
Make, carries out the preparation of petroleum casing pipe TG22 steel band.
The petroleum casing pipe TG22 that comparative experimental example 3 of the present invention is obtained with steel band carry out fracture apperance microstructure observation with
And performance detection, as shown in Fig. 2, the petroleum casing pipe TG22 that comparative experimental example of the present invention 3 obtains scans fracture apperance with steel band, out
Now more apparent MnS is mingled with, and steel strip surface is of poor quality, and performance test results are that -10 DEG C of low-temperature impact toughness are unqualified；
The petroleum casing pipe TG22 that other embodiments of the invention obtain has similar excellent performance with steel band；
Other technologies scheme of the present invention also has beneficial effect similar to the above.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be within the scope of protection determined by the claims.
Claims (7)
1. a kind of production method of petroleum casing pipe TG22 steel band, which is characterized in that step includes:
Step 1, converter smelting and LF furnace refine to obtain molten steel；
Step 2 uses the molten steel of step 1 pulling rate to obtain slab for 1.0m/min perseverance pulling rate progress continuous casting；
Step 3, the slab for obtaining step 2 heat in heating furnace, and 1190 DEG C~1230 DEG C of slab heating temperature, heating time
For 180~300min, soaking temperature is 1180 DEG C~1220 DEG C；Soaking time is 30~60min；
Slab after step 3 heating is carried out roughing and finish rolling by step 4；The roughing R1 opens 1 and 3 passage dephosphorization water, roughing
R2 opens 5 passage dephosphorization water, and each passage de-scaling water pressure of roughing is >=20MPa；The finish rolling removes between opening the first, second rack
Squama water；
Step 5 obtains the petroleum casing pipe TG22 steel band using the steel band of encryption laminar flow cooling treatment step 4.
2. method as described in claim 1, which is characterized in that in the step 1,
The converter smelting carries out alloying using alloys such as manganese iron, ferrosilicon, and final deoxidizing uses ferro-aluminum deoxidation；Converter smelting tapping
Temperature is >=1620 DEG C；
To carry out slag making, deoxidation, desulfurization and removal of inclusions process control in LF furnace when the LF furnace refines, according to molten steel composition
The alloys such as manganese iron, ferrosilicon, ferro-niobium are added and finely tune molten steel composition to target zone, feeds calcium line and carries out Calcium treatment, Calcium treatment finishes
8~10min of soft blow is carried out afterwards.
3. method as described in claim 1, which is characterized in that in the step 2,
When the continuous casting, liquidus temperature is 1508 DEG C, first 25~40 DEG C of the packet Metal in Tundish degree of superheat, other heat of molten steel
15~30 DEG C of the degree of superheat.
4. method as described in claim 1, which is characterized in that in the step 3,
The heating furnace tapping temperature is 1150~1190 DEG C.
5. method as described in claim 1, which is characterized in that in the step 4,
The roughing uses 1+5 mode or 3+5 mode；
Workpiece thickness is 46~60mm after the roughing；
The finish rolling finishing temperature is 815~845 DEG C；Coiling temperature is at 570~610 DEG C；
Steel billet with a thickness of 6~9mm after the finish rolling.
6. method as described in claim 1, which is characterized in that in the step 5,
The encryption laminar flow cooling treatment cooling velocity control is uniformly cooling at 16~22 DEG C.
7. the petroleum casing pipe TG22 steel band that a kind of any one of claim 1~6 the method obtains, which is characterized in that described
Component of the petroleum casing pipe TG22 with steel band comprising following weight percent: C 0.23%；Si 0.17%；Mn 1.30%；P
0.01%；S 0.003%；Nb 0.02%；Als 0.030%；Ca 0.002%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910892490.3A CN110527773A (en) | 2019-09-20 | 2019-09-20 | A kind of production method of petroleum casing pipe TG22 steel band |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910892490.3A CN110527773A (en) | 2019-09-20 | 2019-09-20 | A kind of production method of petroleum casing pipe TG22 steel band |
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| CN110527773A true CN110527773A (en) | 2019-12-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115874107A (en) * | 2022-12-29 | 2023-03-31 | 包头钢铁（集团）有限责任公司 | Method for improving impact toughness of medium carbon ERW petroleum casing steel |
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| CN115874107A (en) * | 2022-12-29 | 2023-03-31 | 包头钢铁（集团）有限责任公司 | Method for improving impact toughness of medium carbon ERW petroleum casing steel |
| CN115874107B (en) * | 2022-12-29 | 2024-02-23 | 包头钢铁（集团）有限责任公司 | Method for improving impact toughness of steel for medium carbon ERW petroleum casing pipe |
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Application publication date: 20191203 |