CN115044822A - 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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- CN115044822A CN115044822A CN202210730075.XA CN202210730075A CN115044822A CN 115044822 A CN115044822 A CN 115044822A CN 202210730075 A CN202210730075 A CN 202210730075A CN 115044822 A CN115044822 A CN 115044822A
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- sucker rod
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- converter
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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
-
- 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
- C22C38/18—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)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a production method of a high-strength heavy-load H-level sucker rod, which comprises the following processes: smelting by adopting a top-bottom combined blown converter, deoxidizing and alloying MnFe and SiMnFe, adding a CrFe alloy in the later period, wherein the carburant is anthracite, the C content in molten steel at the end point of the converter is not less than 0.06 wt%, and the P content is not more than 0.03 wt%; the tapping temperature is 1620-1644 ℃; refining; continuous casting, wherein the superheat degree is set to be 25-35 ℃, and the drawing 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 ℃ and 900 ℃ and tempering at 550 ℃ and 650 ℃. Various indexes of the high-strength sucker rod round steel produced by the method meet standard requirements, and the use requirements of users can be met.
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-load H-level sucker rod is a sucker rod with fatigue strength higher than that of D-level sucker rod by one level, and the maximum allowable stress of the sucker rod is improved by more than 35% than that of the D-level sucker rod, so that the sucker rod is suitable for heavy oil wells, high-water-content oil wells, deep wells or ultra-deep wells, and the large-diameter D-level sucker rod can be replaced by the small-diameter ultra-high-strength sucker rod to form a sucker rod string. Therefore, a production method of the high-strength heavy-load H-level sucker rod is urgently needed, so that all indexes of the sucker rod meet the standard requirements, and the use requirements of users are met.
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 processes:
smelting by adopting a top-bottom combined blown converter, deoxidizing and alloying MnFe and SiMnFe, adding a CrFe alloy in the later period, wherein the carburant is anthracite, the C content in molten steel at the end point of the converter is not less than 0.06 wt%, and the P content is not more than 0.03 wt%; the tapping temperature is 1620-1644 ℃;
refining, namely adding proper amount of lime, fluorite and bauxite according to the components of molten steel 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 purposes of removing the inclusions and reducing the oxygen content, and carrying out slagging, fine adjustment and heating operation according to the components and temperature change of the molten steel;
continuous casting, wherein the superheat degree is set to be 25-35 ℃, and the drawing 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 ℃ and 900 ℃ and tempering at 550 ℃ and 650 ℃.
Further, the heat treatment process comprises the following steps: quenching at 850 ℃ and tempering at 600 ℃.
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 to 1.40 percent; p is less than or equal to 0.025 percent; s is less than or equal to 0.025 percent; cr: 0.55 to 0.85 percent; v: 0.04-0.07%; mo: 0.25-0.35%, and the balance of Fe and inevitable impurities.
Furthermore, under the condition of test stress 406MPa, the fatigue cycle of the material object is not broken for 500 ten thousand times, which is more than the requirement that the fatigue cycle in the SY/T5029-2006 sucker rod standard is more than 100 ten thousand times.
Compared with the prior art, the invention has the beneficial technical effects that:
all indexes of the high-strength sucker rod round steel produced by the method meet standard requirements, and the use requirements of users can be met.
And simultaneously, taking a sample and carrying out real object axial fatigue inspection on a PLG-200 high-frequency fatigue testing machine. Under the condition of test stress 406Mpa, the fatigue cycle of the material object is not broken for 500 ten thousand times, which is more than the requirement that the fatigue cycle is more than 100 ten thousand times in the SY/T5029-2006 sucker rod standard.
Detailed Description
10 furnaces of steel are produced in an industrial trial mode, and the specific technological parameters are controlled as follows:
converter production
Lime, dolomite and fluorite are added according to the actual condition during the smelting of the converter, and ferromanganese, silicomanganese and ferrochrome are added in the tapping process.
Refining in LF furnace
And in the LF furnace refining, adding auxiliary materials for slagging according to the components and temperature change of the molten steel, and adding alloy for fine adjustment and heating operation. Lime, fluorite, bauxite and calcium carbide are added, and ferromanganese, ferrovanadium alloy, ferromolybdenum alloy and the like are added into the alloy according to the refining in-place components.
Continuous casting production
Specification of casting blank: 150X 150mm, normal pull rate: 2.0 m/min; degree of superheat: 25-32 ℃; electromagnetic stirring is carried out by adopting a crystallizer.
Rolling of
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 850 ℃ and tempering at 600 ℃.
The mechanical properties of the sucker rod after heat treatment are shown in the following table:
mechanical property of sucker rod after heat treatment
As can be seen from the table, all indexes of the high-strength sucker rod round steel produced by the method all meet the standard requirements, and the use requirements of users can be met.
And simultaneously, taking a sample and carrying out real object axial fatigue inspection on a PLG-200 high-frequency fatigue testing machine. Under the condition of test stress 406Mpa, the fatigue cycle of the material object is not broken for 500 ten thousand times, which is more than the requirement that the fatigue cycle is more than 100 ten thousand times in the SY/T5029-2006 sucker rod standard.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (4)
1. The production method of the high-strength heavy-load H-level sucker rod is characterized by comprising the following processes of:
smelting by adopting a top-bottom combined blown converter, deoxidizing and alloying MnFe and SiMnFe, adding a CrFe alloy in the later period, wherein the carburant is anthracite, the C content in molten steel at the end point of the converter is not less than 0.06 wt%, and the P content is not more than 0.03 wt%; the tapping temperature is 1620-1644 ℃;
refining, namely adding proper amount of lime, fluorite and bauxite according to the components of molten steel 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 purposes of removing the inclusions and reducing the oxygen content, and carrying out slagging, fine adjustment and heating operation according to the components and temperature change of the molten steel;
continuous casting, wherein the superheat degree is set to be 25-35 ℃, and the drawing 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 ℃ and 900 ℃ and tempering at 550 ℃ and 650 ℃.
2. The method for producing the high-strength heavy-duty H-level sucker rod of claim 1, wherein the heat treatment process comprises the following steps: quenching at 850 ℃ and tempering at 600 ℃.
3. The method for producing a high-strength heavy-duty H-level sucker rod according to claim 1, wherein the sucker rod comprises the following chemical components by mass percent: c: 0.38-0.43%, Si: 0.20-0.35%; mn: 1.10 to 1.40 percent; p is less than or equal to 0.025 percent; s is less than or equal to 0.025 percent; cr: 0.55 to 0.85 percent; v: 0.04-0.07%; mo: 0.25-0.35%, and the balance of Fe and inevitable impurities.
4. The production method of the high-strength heavy-load H-level sucker rod of claim 3, wherein the fatigue cycle of the material object is not broken 500 ten thousand times under the test stress of 406MPa, which is greater than the requirement of the SY/T5029-2006 sucker rod standard that the fatigue cycle is greater than 100 ten thousand times.
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 true CN115044822A (en) | 2022-09-13 |
| CN115044822B CN115044822B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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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 (6)
| 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 |
| US20190169706A1 (en) * | 2016-08-30 | 2019-06-06 | Baoshan Iron & Steel Co., Ltd. | Sucker rod steel and manufacturing method therefor |
-
2022
- 2022-06-24 CN CN202210730075.XA patent/CN115044822B/en active Active
Patent Citations (6)
| 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 |
| US20190169706A1 (en) * | 2016-08-30 | 2019-06-06 | Baoshan Iron & Steel Co., Ltd. | Sucker rod steel and manufacturing method therefor |
| 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 |
|---|---|
| CN115044822B (en) | 2023-08-08 |
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