CN115044822B - Production method of high-strength heavy-load H-level sucker rod - Google Patents
Production method of high-strength heavy-load H-level sucker rod Download PDFInfo
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- CN115044822B CN115044822B CN202210730075.XA CN202210730075A CN115044822B CN 115044822 B CN115044822 B CN 115044822B CN 202210730075 A CN202210730075 A CN 202210730075A CN 115044822 B CN115044822 B CN 115044822B
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- sucker rod
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
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- 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
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- 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
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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- 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
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- 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)
- Heat Treatment Of Steel (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a production method of a high-strength heavy-load H-level sucker rod, which comprises the following steps: smelting by adopting a top-bottom combined blown converter, deoxidizing and alloying MnFe and SiMnFe, adding CrFe alloy in the later stage, adopting anthracite as a carburant, and ensuring that the content of C in molten steel at the end point of the converter is not less than 0.06wt% and the content of P in molten steel at the end point of the converter is not more than 0.03wt%; the tapping temperature is 1620-1644 ℃; refining; continuous casting, wherein the superheat degree is set to be 25-35 ℃ and the pulling speed is 1.9-2.0 m/min; rolling, wherein the initial rolling temperature is 1000-1100 ℃ and the final rolling temperature is 900-950 ℃; the heat treatment process comprises the following steps: quenching at 800-900 deg.c and tempering at 550-650 deg.c. The high-strength round steel produced by the invention meets the standard requirements of all indexes, and can meet the use requirements of users.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a production method of a high-strength heavy-load H-level sucker rod.
Background
The high-strength heavy-duty H-level sucker rod is a sucker rod with one level higher fatigue strength than that of the D-level sucker rod, the maximum allowable stress of the sucker rod is increased by more than 35% than that of the D-level sucker rod, and the sucker rod is suitable for a thick oil well, a high-water-content oil well, a deep well or an ultra-deep well, and can also be formed by replacing the large-diameter D-level sucker rod with the small-diameter ultra-high-strength sucker rod. Therefore, the production method of the high-strength heavy-duty H-level sucker rod is urgently needed, and various indexes of the high-strength heavy-duty H-level sucker rod meet standard requirements so as to meet the use requirements of users.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a production method of a high-strength heavy-load H-level sucker rod.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a production method of a high-strength heavy-load H-level sucker rod, which comprises the following steps:
smelting by adopting a top-bottom combined blown converter, deoxidizing and alloying MnFe and SiMnFe, adding CrFe alloy in the later stage, adopting anthracite as a carburant, and ensuring that the content of C in molten steel at the end point of the converter is not less than 0.06wt% and the content of P in molten steel at the end point of the converter is not more than 0.03wt%; the tapping temperature is 1620-1644 ℃;
refining, namely adding lime, fluorite and bauxite in an appropriate amount according to the molten steel components of the converter, ensuring enough time for LF refining, blowing argon in the whole process for enough stirring time to enable inclusions to float upwards, achieving the purpose of removing the inclusions and reducing the oxygen content, and carrying out slag making, fine tuning and heating operation according to the molten steel components and temperature change;
continuous casting, wherein the superheat degree is set to be 25-35 ℃ and the pulling speed is 1.9-2.0 m/min;
rolling, wherein the initial rolling temperature is 1000-1100 ℃ and the final rolling temperature is 900-950 ℃;
the heat treatment process comprises the following steps: quenching at 800-900 deg.c and tempering at 550-650 deg.c.
Further, the heat treatment process comprises the following steps: quenching at 850 deg.C and tempering at 600 deg.C.
Further, the sucker rod comprises the following chemical components in percentage by mass: c:0.38-0.43%, si:0.20-0.35%; mn:1.10-1.40%; p is less than or equal to 0.025%; s is less than or equal to 0.025 percent; cr:0.55-0.85%; v:0.04-0.07%; mo:0.25-0.35%, and the balance of Fe and unavoidable impurities.
Further, under the condition of 406Mpa test stress, the physical fatigue cycle is 500 ten thousand times without breaking, which is greater than the requirement that the fatigue cycle is greater than 100 ten thousand times in SY/T5029-2006 sucker rod standard.
Compared with the prior art, the invention has the beneficial technical effects that:
the high-strength round steel produced by the invention meets the standard requirements of all indexes, and can meet the use requirements of users.
Meanwhile, taking a sample, and performing physical axial fatigue test on a PLG-200 high-frequency fatigue testing machine. Under the condition of 406Mpa test stress, the fatigue cycle of the material object is 500 ten thousand times without breaking, which is greater than the requirement that the fatigue cycle is greater than 100 ten thousand times in SY/T5029-2006 sucker rod standard.
Detailed Description
The industrial trial production of 10 furnaces steel, the specific technological parameters are controlled as follows:
converter production
The lime, dolomite and fluorite are added according to actual conditions during converter smelting, and ferromanganese, silicomanganese and ferrochromium are added during tapping.
LF furnace refining
LF refining is carried out, auxiliary materials are added for slagging according to the components of molten steel and the temperature change, and alloy fine adjustment and heating operation are carried out. Adding lime, fluorite, bauxite and calcium carbide, and adding ferromanganese, ferrovanadium, ferromolybdenum and the like into the alloy according to the fine adjustment of refined components in place.
Continuous casting production
Casting blank specification: 150×150mm, normal pull rate: 2.0m/min; degree of superheat: 25-32 ℃; and (5) adopting a crystallizer for electromagnetic stirring.
Rolling
The initial rolling temperature is 1000-1100 deg.c and the final rolling temperature is 900-950 deg.c.
The heat treatment process comprises the following steps: quenching at 850 deg.C and tempering at 600 deg.C.
The mechanical properties of the sucker rod after heat treatment are shown in the following table:
mechanical properties of sucker rod after heat treatment
As shown in the table, all indexes of the high-strength sucker rod round steel produced by the method meet standard requirements, and can meet the use requirements of users.
Meanwhile, taking a sample, and performing physical axial fatigue test on a PLG-200 high-frequency fatigue testing machine. Under the condition of 406Mpa test stress, the fatigue cycle of the material object is 500 ten thousand times without breaking, which is greater than the requirement that the fatigue cycle is greater than 100 ten thousand times in SY/T5029-2006 sucker rod standard.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (3)
1. The production method of the high-strength heavy-load H-level sucker rod is characterized by comprising the following steps of:
smelting by adopting a top-bottom combined blown converter, deoxidizing and alloying MnFe and SiMnFe, adding CrFe alloy in the later stage, adopting anthracite as a carburant, wherein the content of C in molten steel at the end point of the converter is not less than 0.06wt%, and the content of P is not more than 0.03wt%; the tapping temperature is 1620-1644 ℃;
refining, namely adding lime, fluorite and bauxite in an appropriate amount according to the molten steel components of the converter, ensuring enough time for LF refining, blowing argon in the whole process for enough stirring time to enable inclusions to float upwards, achieving the purpose of removing the inclusions and reducing the oxygen content, and carrying out slag making, fine tuning and heating operation according to the molten steel components and temperature change;
continuously casting, wherein the superheat degree is set to be 25-35 ℃, and the pulling speed is 1.9-2.0 m/min;
rolling, wherein the initial rolling temperature is 1000-1100 ℃, and the final rolling temperature is 900-950 ℃;
the heat treatment process comprises the following steps: quenching at 800-900 deg.c and tempering at 550-650 deg.c;
the sucker rod comprises the following chemical components in percentage by mass: c:0.38-0.43%, si:0.20-0.35%; mn:1.10-1.40%; p is less than or equal to 0.025%; s is less than or equal to 0.025 percent; cr:0.55-0.85%; v:0.04-0.07%; mo:0.25-0.35%, and the balance of Fe and unavoidable impurities.
2. The method for producing the high-strength heavy-duty H-level sucker rod according to claim 1, wherein the heat treatment process comprises the following steps: quenching at 850 deg.C and tempering at 600 deg.C.
3. The method for producing the high-strength heavy-duty H-level sucker rod according to claim 1, wherein the fatigue cycle of the physical object is 500 ten thousand times without breaking under the condition of 406Mpa of test stress, and is more than 100 ten thousand times in the SY/T5029-2006 sucker rod standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210730075.XA CN115044822B (en) | 2022-06-24 | 2022-06-24 | Production method of high-strength heavy-load H-level sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210730075.XA CN115044822B (en) | 2022-06-24 | 2022-06-24 | Production method of high-strength heavy-load H-level sucker rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115044822A CN115044822A (en) | 2022-09-13 |
| CN115044822B true CN115044822B (en) | 2023-08-08 |
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| CN202210730075.XA Active CN115044822B (en) | 2022-06-24 | 2022-06-24 | Production method of high-strength heavy-load H-level sucker rod |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162067A (en) * | 2011-03-28 | 2011-08-24 | 首钢总公司 | Steel for anticorrosion sucker rods in oil field and production method thereof |
| CN102839332A (en) * | 2012-07-06 | 2012-12-26 | 常熟市石油固井工具有限公司 | Novel pumping rod |
| CN103233172A (en) * | 2013-04-19 | 2013-08-07 | 江苏沙钢集团淮钢特钢股份有限公司 | Ultrahigh-strength and high-toughness steel for pumping rod and production process thereof |
| CN109023081A (en) * | 2018-09-05 | 2018-12-18 | 包头钢铁（集团）有限责任公司 | The production method of rare earth sucker rod round steel and rare earth sucker rod round steel |
| CA3012155A1 (en) * | 2017-08-11 | 2019-02-11 | Weatherford Technology Holdings, Llc | Corrosion resistant sucker rod |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107779777B (en) * | 2016-08-30 | 2019-07-23 | 宝山钢铁股份有限公司 | A kind of sucker-rod steel and its manufacturing method |
-
2022
- 2022-06-24 CN CN202210730075.XA patent/CN115044822B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162067A (en) * | 2011-03-28 | 2011-08-24 | 首钢总公司 | Steel for anticorrosion sucker rods in oil field and production method thereof |
| CN102839332A (en) * | 2012-07-06 | 2012-12-26 | 常熟市石油固井工具有限公司 | Novel pumping rod |
| CN103233172A (en) * | 2013-04-19 | 2013-08-07 | 江苏沙钢集团淮钢特钢股份有限公司 | Ultrahigh-strength and high-toughness steel for pumping rod and production process thereof |
| CA3012155A1 (en) * | 2017-08-11 | 2019-02-11 | Weatherford Technology Holdings, Llc | Corrosion resistant sucker rod |
| CN109023081A (en) * | 2018-09-05 | 2018-12-18 | 包头钢铁（集团）有限责任公司 | The production method of rare earth sucker rod round steel and rare earth sucker rod round steel |
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| Publication number | Publication date |
|---|---|
| CN115044822A (en) | 2022-09-13 |
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