CN101921952B - Electric resistance welding petroleum casing pipe - Google Patents
Electric resistance welding petroleum casing pipe Download PDFInfo
- Publication number
- CN101921952B CN101921952B CN2009100531461A CN200910053146A CN101921952B CN 101921952 B CN101921952 B CN 101921952B CN 2009100531461 A CN2009100531461 A CN 2009100531461A CN 200910053146 A CN200910053146 A CN 200910053146A CN 101921952 B CN101921952 B CN 101921952B
- Authority
- CN
- China
- Prior art keywords
- steel
- electric resistance
- resistance welding
- casing pipe
- welding
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses steel for a petroleum casing pipe and an electric resistance welding petroleum casing pipe. The steel comprises the following elements in percentage by weight: 0.19-0.29 percent of C, 0.1-0.4 percent of Si, 1.0-1.4 percent of Mn, not greater than 0.0.15 percent of P, not greater than 0.008 percent of S, 0.002-0.040 percent of Al, 0.001-0.010 percent of Ca and the balance of Fe and inevitable impurities, and the carbon equivalent is 0.4-0.5. The steel for the petroleum casing pipe can be suitable for a shearing butt welding process, and the electric resistance welding petroleum casing pipe meets the M65 steel-level requirement. The invention also discloses manufacture methods for the steel for the petroleum casing pipe and the electric resistance welding petroleum casing pipe.
Description
Technical field
The present invention relates to a kind of oil casing pipe steel, specifically, the M65 grade of steel electric resistance welding petroleum sleeve pipe and the method for manufacture thereof that relate to a kind of oil casing pipe steel and method of manufacture thereof and process with this steel grade.
Background technology
API standard code, petroleum casing pipe are divided into two types of seamless tube and welded casings.For seamless tube; One of distinguishing feature of welded casing is that the wall thickness dimension precision is good; Therefore use it for to produce and have the high anti-petroleum casing pipe that squeezes performance and have inborn meliority; Simultaneously welded casing also has production efficiency height, wide, the low cost and other advantages of specification limit, so welded casing becomes manufacturer and oil field user's first-selected kind, receives the favor in market always.
The basic production technology of welded casing is: steel pipe moulding-online welding-weld seam thermal treatment or homogeneous tube thermal treatment-pipe processing-factory inspection etc.In order to realize the multireel continuous production, further improve the production efficiency of welded casing, before the steel pipe moulding; Usually also need be to coiled sheet and coiled sheet shear butt welding end to end; But the carbon equivalent of shearing butt welding requirement steel grade must be low, otherwise cause the steel plate broken belt easily, has a strong impact on production efficiency; Generally speaking, require the carbon equivalent of material to surpass 0.5.
The M65 steel level oil bushing is a kind of high value added product, and this telescopic ys must be between 448-586MPa, and tensile strength must be greater than 586MPa, and hardness HRC is less than 22.(title of this article is the exploitation of production technology characteristic and the M65 of K55 to one piece of paper of " Sichuan is metallurgical " the 5th phase in 2002; The author is Luo Xiandeng) disclose with 37Mn2V and produced the M65 weldless steel tube; But because this composition carbon equivalent is greater than 0.6; Be unfavorable for that coiled sheet shears butt welding end to end, can only monovolume production, can't embody the meliority on the welded casing production efficiency.
Summary of the invention
First purpose of the present invention is to provide a kind of oil casing pipe steel, and it can be used in resistance welding (ERW) petroleum casing pipe of making the M65 grade of steel, and is applicable to shearing butt welding operation, improves follow-up electric resistance welding petroleum sleeve pipe production efficiency.
Second purpose of the present invention is to provide a kind of preparation method of said oil casing pipe steel.
The 3rd purpose of the present invention is to provide a kind of electric resistance welding petroleum sleeve pipe, and it meets the requirement of M65 grade of steel.
The 4th purpose of the present invention is to provide a kind of said electric resistance welding petroleum telescopic preparation method, and it can produce the electric resistance welding petroleum sleeve pipe that meets the requirement of M65 grade of steel.
Oil casing pipe steel provided by the present invention; Its composition quality per-cent is C:0.19-0.29, Si:0.1-0.4, Mn:1.0-1.4, P≤0.015, S≤0.008, Al:0.002-0.040, Ca:0.001-0.010; Surplus is Fe and inevitable impurity, and its carbon equivalent is 0.4-0.5.
Oil casing pipe steel provided by the present invention can adopt following method manufacturing, comprising:
(1) converter or Electric furnace steel making obtain molten steel, and molten steel is handled through Ca after external refining again, and continuous casting becomes slab;
(2) slab rolls into strip after 1200-1250 ℃ of heating, the finishing temperature of strip >=850 ℃;
(3) roll the back strip through laminar flow be cooled to≤700 ℃ coil into coiled sheet.
Electric resistance welding petroleum sleeve pipe provided by the present invention; Its composition quality per-cent is C:0.19-0.29, Si:0.1-0.4, Mn:1.0-1.4, P≤0.015, S≤0.008, Al:0.002-0.040, Ca:0.001-0.010; Surplus is Fe and inevitable impurity, and its carbon equivalent is 0.4-0.5.
Electric resistance welding petroleum sleeve pipe provided by the present invention can adopt following method manufacturing, comprising:
(1) steel pipe moulding and ERW tubulation, welding temperature is 1350-1500 ℃, welding speed 15-20m/min;
(2) steel pipe is 880-920 ℃ of heating, and soaking time is calculated as 3-6min/mm by thickness of steel pipe;
(3) shrend;
(4) tempering, temperature 650-690 ℃.
Preferably, above-mentioned electric resistance welding petroleum telescopic preparation method also comprises:
(5) the laggard administration-management processing of cooling.
Preferably, the step that also comprises coiled sheet shearing butt welding in step (1) before.
Below the Design Mechanism of alloying constituent of the present invention is elaborated:
C: the intensity that can significantly improve steel; But can reduce welding property greatly when too high, mistake is low then not to reach the desired intensity of M65 grade of steel, and its content is about 0.37% usually; In the present invention; When the applicant finds that its content is 0.19-0.29%, can improve welding property, can not reduce the intensity of steel again;
Mn: to improve the strength of materials, during too high levels, the microstructure segregation in the steel is serious in ferritic in main solid solution; Influence welding property, mistake is low then not to reach the desired intensity of M65 grade of steel, and its content is generally 1.5-2%; In the present invention; When the applicant finds that its content is 1.0-1.4%, can improve welding property, can not reduce the intensity of steel again;
Si: to improve the ys of steel, unsuitable too high, by weight percentage, it is 0.1-0.4% that the present invention selects its content in ferritic in solid solution;
Al: traditional deoxidation nitrogen killer, but crystal grain thinning, in the present invention, for reducing the material yield tensile ratio, it is 0.002-0.040% that the present invention selects its content;
Ca: can cleaning molten steel, improve the purity of steel, make the MnS nodularization in the steel; But during too high levels, be prone to form thick non-metallic inclusion, in the present invention; When the applicant finds that its content is 0.001-0.01%, can give full play to the potential of material, reach the requirement of M65 grade of steel;
S and P are the detrimental impurity elements in the steel, and too high levels can worsen the toughness of steel and be unfavorable for welding, therefore should reduce sulphur, the phosphorus content in the steel as far as possible, and the present invention controls P≤0.015%, S≤0.008%.
The carbon equivalent that the present invention also controls steel grade is 0.4-0.5, to satisfy the requirement of shearing the butt welding operation, helps realizing the multireel continuous production, enhances productivity.
The advantage that the present invention compared with prior art has is:
(1) oil casing pipe steel provided by the invention can produce the electric resistance welding petroleum sleeve pipe of M65 grade of steel, and its carbon equivalent is moderate simultaneously, can also be applicable to and shear the butt welding operation, improves follow-up electric resistance welding petroleum sleeve pipe production efficiency;
(2) the present invention makes the potential of material be not fully exerted in heat treatment process through Ca treatment and purification molten steel;
(3) electric resistance welding petroleum telescopic working method operation provided by the invention is simple, and the homogeneous tube stable mechanical property;
(4) material alloys cost used in the present invention is low, has great economic benefit.
Embodiment
Embodiment and comparative example chemical ingredients are seen table 1; After converter steelmaking and external refining, molten steel is handled through Ca, and continuous casting becomes base; Continuously cast bloom is rolled into the strip of thick 10mm after 1200-1250 ℃ of heating; Finishing temperature is greater than 850 ℃, rolls the back strip and is cooled to 570 ℃ through laminar flow and batches, and mechanical property is seen table 2.Through shearing butt welding, steel pipe moulding and welding tube-making (welding temperature 1350-1500 ℃, welding speed 15-20m/min), after 880-920 ℃ of shrend and 650-690 ℃ of tempered modifier treatment, mechanical property is seen table 3 again.Two kinds of heat treated steel strengths of homogeneous tube of embodiment 1-4 all satisfy ys between 448-586MPa, the requirement of tensile strength >=586MPa.The C content of comparative example 1 is low excessively, causes after the homogeneous tube thermal treatment tensile strength of steel pipe defective.
Table 1 embodiment and Comparative Examples chemical ingredients
| ? | C | Si | Mn | P | S | Al | Ca |
| Embodiment 1 | 0.22 | 0.3 | 1.4 | 0.012 | 0.004 | 0.03 | 0.003 |
| Embodiment 2 | 0.27 | 0.3 | 1.2 | 0.008 | 0.004 | 0.02 | 0.005 |
| Comparative example 1 | 0.15 | 0.3 | 1.2 | 0.004 | 0.002 | 0.04 | 0.006 |
Table 2 hot-rolled sheet mechanical property
Embodiment and Comparative Examples mechanical property after the thermal treatment of table 3 homogeneous tube
Annotate: in the table 3 petroleum casing pipe of embodiment 1A and 1B all in the employing table 2 steel grade of embodiment 1 process, in the table 3 petroleum casing pipe of embodiment 2A and 2B all in the employing table 2 steel grade of embodiment 2 process.
This shows, adopt the chemical ingredients that the present invention designed, can produce and be applicable to the oil casing pipe steel of shearing the butt welding operation, and meet the requirement of M65 grade of steel, low-cost electric resistance welding petroleum sleeve pipe.
Claims (3)
1. electric resistance welding petroleum sleeve pipe; Its composition quality per-cent is: C:0.19-0.29, Si:0.1-0.4, Mn:1.0-1.4, P≤0.015, S≤0.008, Al:0.002-0.040, Ca:0.001-0.010; Surplus is Fe and inevitable impurity, and its carbon equivalent is 0.4-0.5;
Said electric resistance welding petroleum sleeve pipe is through comprising the method for manufacture manufacturing of following steps:
(1) steel pipe moulding and ERW tubulation, welding temperature is 1350-1500 ℃, welding speed 15-20m/min;
(2) steel pipe is 880-920 ℃ of heating, and soaking time is calculated as 3-6min/mm by thickness of steel pipe;
(3) shrend;
(4) tempering, temperature 650-690 ℃.
2. electric resistance welding petroleum sleeve pipe as claimed in claim 1 is characterized in that method of manufacture also comprises: the laggard administration-management processing of (5) cooling.
3. according to claim 1 or claim 2 electric resistance welding petroleum sleeve pipe is characterized in that method of manufacture also is included in step (1) following steps before:
Converter or Electric furnace steel making obtain molten steel, and molten steel is handled through Ca after external refining again, and continuous casting becomes slab;
Slab rolls into strip after 1200-1250 ℃ of heating, the finishing temperature of strip >=850 ℃;
Roll the back strip through laminar flow be cooled to≤700 ℃ coil into coiled sheet;
Coiled sheet is sheared butt welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100531461A CN101921952B (en) | 2009-06-16 | 2009-06-16 | Electric resistance welding petroleum casing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100531461A CN101921952B (en) | 2009-06-16 | 2009-06-16 | Electric resistance welding petroleum casing pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101921952A CN101921952A (en) | 2010-12-22 |
| CN101921952B true CN101921952B (en) | 2012-05-30 |
Family
ID=43337163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100531461A Active CN101921952B (en) | 2009-06-16 | 2009-06-16 | Electric resistance welding petroleum casing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101921952B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103602885A (en) * | 2013-10-22 | 2014-02-26 | 内蒙古包钢钢联股份有限公司 | Low-alloy and high-strength steel plate and production method thereof |
| CN111004977A (en) * | 2019-12-31 | 2020-04-14 | 包头钢铁（集团）有限责任公司 | Steel for preparing H40 petroleum casing pipe by 2250mm production line and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270438A (en) * | 2007-03-23 | 2008-09-24 | 宝山钢铁股份有限公司 | Normalized steel for resistance welding petroleum case pipe with low yield ratio, resistance welding casing tube and its manufacturing method |
| CN101328559A (en) * | 2007-06-22 | 2008-12-24 | 宝山钢铁股份有限公司 | Steel for low yield ratio petroleum case pipe, petroleum case pipe and manufacturing method thereof |
-
2009
- 2009-06-16 CN CN2009100531461A patent/CN101921952B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270438A (en) * | 2007-03-23 | 2008-09-24 | 宝山钢铁股份有限公司 | Normalized steel for resistance welding petroleum case pipe with low yield ratio, resistance welding casing tube and its manufacturing method |
| CN101328559A (en) * | 2007-06-22 | 2008-12-24 | 宝山钢铁股份有限公司 | Steel for low yield ratio petroleum case pipe, petroleum case pipe and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101921952A (en) | 2010-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101417296B (en) | Manufacture method of large caliber high steel grade corrosion proof seamless steel tube in diameter phi 219.0-460.0mm | |
| JP4475440B1 (en) | Seamless steel pipe and manufacturing method thereof | |
| CN101270438B (en) | Normalized steel for resistance welding petroleum case pipe with low yield ratio, resistance welding casing tube and its manufacturing method | |
| CN101285151B (en) | Petroleum case pipe with high strength and toughness and producing method thereof | |
| CN101153371B (en) | High-strength cold-formed hot continuous rolled steel plate and method of preparing the same | |
| CN101328559B (en) | Steel for low yield ratio petroleum case pipe, petroleum case pipe and manufacturing method thereof | |
| CN101353766B (en) | Grooving corrosion resistant high strength steel for ERW soldering sleeve, sleeve and production method | |
| CN101928889A (en) | Steel for resisting sulfide corrosion and manufacturing method thereof | |
| CN103966504A (en) | 500 MPa-grade low-yield ratio straight welded steel pipe and manufacturing method thereof | |
| CN103361561B (en) | The preparation method of coupling material weldless steel tube | |
| CN102400039A (en) | Slurry feed line steel with good low-temperature toughness and manufacturing method thereof | |
| CN101818308B (en) | Steel for longitudinal resistance welded pipe with low yield ratio and manufacturing method thereof | |
| CN101503781A (en) | Pipe for crane boom and manufacturing method thereof | |
| CN101775537A (en) | Microalloy high tenacity no-tempering crane jib tube and production method | |
| CN112756423A (en) | Rare earth-containing seamless steel tube for key bar of rotary drilling rig and preparation method thereof | |
| CN102828121B (en) | K55-grade high frequency resistance welding oil casting steel and its manufacturing method | |
| CN103882301B (en) | J55 level Low-cost electric welding resistance oil casing pipe steel and manufacture method thereof | |
| CN102912245A (en) | N80-grade electric resistance welding steel for oil casings and method for manufacturing N80-grade electric resistance welding steel | |
| JP2006097051A (en) | Method for producing martensitic stainless steel tube | |
| CN109563587B (en) | Seamless steel pipe and method for producing same | |
| CN103510010B (en) | A kind of Cr alloying electric resistance welding petroleum casing steel and manufacture method thereof | |
| CN100507050C (en) | Low-yield-ratio straight welding oil annular tube steel and manufacturing method thereof | |
| CN101921952B (en) | Electric resistance welding petroleum casing pipe | |
| CN103469070B (en) | A kind of straight welding oil annular tube steel and production method | |
| CN101906586A (en) | Steel for high-strength straight-seam welded pipe and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |