CN106755903A - The Technology for Heating Processing of drill pipe body - Google Patents
The Technology for Heating Processing of drill pipe body Download PDFInfo
- Publication number
- CN106755903A CN106755903A CN201510830335.0A CN201510830335A CN106755903A CN 106755903 A CN106755903 A CN 106755903A CN 201510830335 A CN201510830335 A CN 201510830335A CN 106755903 A CN106755903 A CN 106755903A
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- China
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- drill pipe
- pipe body
- technology
- heating processing
- quenching
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of Technology for Heating Processing of drill pipe body, including quenching, tempering heat treatment, operated with technological parameter as follows：1. quench, a, drill pipe body is transported in the step-by-step movement glowing furnace for being warming up to 880 DEG C -930 DEG C, insulation 40-60 minutes, enters 10 DEG C -30 DEG C of quenching liquid after b, drill pipe body are come out of the stove, in 15 seconds, cool time is no less than 30 seconds, 2. it is tempered, drill pipe body is transported in the step-by-step movement tempering furnace for being warming up to 560 DEG C -590 DEG C, is incubated 60-85 minutes, drill pipe body is come out of the stove again, naturally cools to room temperature.Using the present invention, the ballistic work performance of drilling rod is good, and more than 30% is exceeded than V150 grade of steels standard value；The mechanical index such as intensity, the elongation percentage of the drill pipe body after heat treatment reach the requirement of V150 grade of steels, and qualification rate is up to more than 98%；And heat treatment operation step of the invention, technological parameter are reasonable.
Description
Technical field
It is especially a kind of to manufacture the drill pipe having compared with high-mechanical property the present invention relates to a kind of Technology for Heating Processing of body
The quenching of body, tempering process, can reach the standard of V150 grade of steels.
Background technology
Oil drill rocker is the main tool of oil drilling, and structure includes the drilling rod connecting at drill pipe body and drill pipe body two ends
Head.In the exploitation and extractive process of oil gas, it is desirable to drill pipe body allow for bearing huge interior external pressure, distortion, bending and
Vibration.
With continuing to develop for petroleum industry, increasing deep-well, ultradeep well are developed, and this is just proposed more to drilling rod
Carry out requirement higher.Intensity highest is S135 grade of steels in current API series drilling rod, but with the increase of drilling depth, to boring
The intensity requirement of bar is also being continuously increased, and the drilling rod of S135 grade of steels cannot meet the requirement of part deep-well.
External drilling rod industry proposes the standard of this new grade of steel of drilling rod industry of V150 grade of steels.V150 steel grade drill pipes are to former material
Material and heat treatment capacity propose requirement higher.Disclosed Technology for Heating Processing domestic at present, is extremely difficult to V150 grade of steels brill
The technical requirements of bar, the tensile property of the drill pipe body after being especially heat-treated can not meet requirement, related Technology for Heating Processing
Foreign countries also have no report.
The content of the invention
The technical problem to be solved in the present invention is to provide the brill that a kind of reliable, manufacture that is being easy to operation meets V150 grade of steels
The Technology for Heating Processing of rod tube body.
In order to solve the above technical problems, the technical solution used in the present invention includes quenching, tempering, for Technology for Heating Processing
Steel grades and content be, C：0.24-0.30, Cr：0.85-1.20, Mo：0.50-0.75, V：0-0.05, Si：0.10-
0.40, Mn：0.60-1.00, Cu：0-0.05, S：≤ 0.015, P：≤ 0.020, balance of Fe, unit is mass percent, is pressed
Following steps and technological parameter are operated：
1. quench
A, drill pipe body is transported in the step-by-step movement glowing furnace for being warming up to 880 DEG C -930 DEG C, is incubated 40-60 minutes,
Enter 10 DEG C -30 DEG C of quenching liquid after b, drill pipe body are come out of the stove, in 15 seconds, the cool time is no less than 30 seconds；
2. it is tempered
Drill pipe body is transported in the step-by-step movement tempering furnace for being warming up to 560 DEG C -590 DEG C, is incubated 60-85 minutes, then will
Drill pipe body is come out of the stove, and naturally cools to room temperature.
Further improve and be：
Drill pipe body after quenching was tempered in four hours.
Described quenching liquid is running water, and the temperature of quenching liquid is adjusted by cooling tower.
Quenching Step 1. described in drill pipe body carry out rotation in quenching liquid, autorotation speed is 70-100 revs/min.
1. 2. processed with step after drill pipe body is not more than 200 according to step, make the machine of 1 upset end and drill pipe body
Tool performance test, pilot project be tensile strength and ballistic work, it is qualified after, storage.This step is to strengthen quality monitoring.Institute
1. and 2. the ballistic work underproof drill pipe body of experiment stated is quenched according to step again, tempering heat treatment, quench again,
The number of times of tempering heat treatment is no more than three times.
During described ballistic work pass the test, 2. the higher drill pipe body of tensile strength is tempered according to step again,
Times of tempering is no more than three times, and 1. and 2. the drill pipe body of low cross-intensity is quenched according to step, is tempered hot place again
Reason, quenching, tempering heat treatment number of times are no more than three times again.
After being heat-treated to the drill pipe body of above-mentioned steel grade using the present invention, the ballistic work performance of drill pipe body is good, with
The 54J of V150 grade of steel standard values is compared, beyond more than 30%；And the power such as intensity, the elongation percentage of drill pipe body after heat treatment
The requirement that index reaches V150 grade of steels is learned, blank both domestic and external has been filled up；The heat treatment step that the present invention is set is simple, technique
Rational Parameters, process qualification rate up to more than 98%.
Specific embodiment
Invention is described in further detail below by specific embodiment.
Using the drill pipe body of certain company, its chemical composition is, C：0.26, Cr：0.98, Mo：0.64, V：0.005, Si：
0.22, Mn：0.75, Cu：0.03, S：0.001, P：0.008, balance of Fe, unit is mass percent.Enter according to the following steps
Row heat treatment：
1. quench
A, drill pipe body is transported in the step-by-step movement glowing furnace for being warming up to 910 DEG C, is incubated 60 minutes；
Enter 23 DEG C of quenching liquid after b, drill pipe body are come out of the stove, in 15 seconds, quenching liquid is running water, and with 88 revs/min
The speed of clock carries out rotation, and 40 seconds cool times, the wherein temperature of quenching liquid are adjusted by cooling tower, and drill pipe body is with a constant speed
Rate rotation is, for quick, uniform hardening, to form tiny, uniform grain structure.
2. it is tempered
In quenching 1 hour, drill pipe body is transported in the step-by-step movement tempering furnace for being warming up to 575 DEG C, is incubated 70 minutes；Again
Drill pipe body is come out of the stove, room temperature is naturally cooled to.Through above heat treatment step, the mechanical performance of drill pipe body is as follows：
Yield strength 1090MPa
Tensile strength 1180MPa
Elongation percentage 22.0%
Charpy-V impact power (21 DEG C) longitudinal direction 99J.
The mechanical performance of above-mentioned drill pipe body meets following V150 grade of steels technical requirements：
Yield strength 1034-1138MPa
Tensile strength >=1103MPa
Elongation percentage >=13.0%
Charpy-V impact power (21 DEG C) longitudinal direction >=54J.
The metallographic structure of the body after being processed through the Technology for Heating Processing of drill pipe body of the invention, uniform small grains, plus
Thick end inside and outside wall is 10 grades, 9 grades of inboard wall of tube body, 9.5 grades of outer wall, is tension, the performance of the aspect such as antifatigue of drill pipe body
There is provided guarantee.
After according to above-mentioned steps quenching, tempering heat treatment drill pipe body 100, the machine of 1 upset end and drill pipe body is made
Used as quality monitoring, pilot project is tensile strength and ballistic work to tool performance test.Two result of the tests meet V150 grade of steels
Technical requirements, 100 drill pipe bodies of above-mentioned treatment are put in storage.
If 1. and 2. the underproof drill pipe body of ballistic work experiment is quenched according to step again, tempering heat treatment, weight
New quenching, the number of times of tempering heat treatment are no more than three times.
When ballistic work pass the test, 2. the higher drill pipe body of tensile strength is tempered according to step again, tempering
Number of times is no more than three times, and 1. and 2. the drill pipe body of low cross-intensity is quenched according to step again, tempering heat treatment, weight
New quenching, tempering heat treatment number of times are no more than three times.
Claims (3)
1. a kind of Technology for Heating Processing of drill pipe body, including quenching, tempering, for the steel grades and content of Technology for Heating Processing
For C：0.24-0.30, Cr：0.85-1.20, Mo：0.50-0.75, V：0-0.05, Si：0.10-0.40, Mn：0.60-1.00,
Cu：0-0.05, S：≤ 0.015, P：≤ 0.020, balance of Fe, unit is mass percent, it is characterised in that as follows
Operated with technological parameter：
1. quench
A, drill pipe body is transported in the step-by-step movement glowing furnace for being warming up to 880 DEG C -930 DEG C, is incubated 40-60 minutes, b, drilling rod
Enter 10 DEG C -30 DEG C of quenching liquid after body is come out of the stove, in 15 seconds, the cool time is no less than 30 seconds, and described drill pipe body exists
Rotation is carried out in quenching liquid, autorotation speed is 70-100 revs/min, described quenching liquid is running water, the temperature of quenching liquid is led to
Supercooling tower is adjusted,
2. it is tempered
Drill pipe body is transported in the step-by-step movement tempering furnace for being warming up to 560 DEG C -590 DEG C, is incubated 60-85 minutes, then by drilling rod
Body is come out of the stove, and naturally cools to room temperature.
2. the Technology for Heating Processing of drill pipe body according to claim 1, it is characterised in that the drill pipe body after quenching is four
It is tempered in hour.
3. the Technology for Heating Processing of drill pipe body according to claim 1, it is characterised in that 1. 2. locate with step according to step
After reason drill pipe body is not more than 200, the mechanical test of 1 upset end and drill pipe body is done, pilot project is that tension is strong
Degree and ballistic work, warehousing after passing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830335.0A CN106755903A (en) | 2015-11-25 | 2015-11-25 | The Technology for Heating Processing of drill pipe body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830335.0A CN106755903A (en) | 2015-11-25 | 2015-11-25 | The Technology for Heating Processing of drill pipe body |
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| Publication Number | Publication Date |
|---|---|
| CN106755903A true CN106755903A (en) | 2017-05-31 |
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ID=58964039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510830335.0A Pending CN106755903A (en) | 2015-11-25 | 2015-11-25 | The Technology for Heating Processing of drill pipe body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604258A (en) * | 2017-08-09 | 2018-01-19 | 包头钢铁（集团）有限责任公司 | Drill pipe body seamless steel pipe and its production method |
-
2015
- 2015-11-25 CN CN201510830335.0A patent/CN106755903A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604258A (en) * | 2017-08-09 | 2018-01-19 | 包头钢铁（集团）有限责任公司 | Drill pipe body seamless steel pipe and its production method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |
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| WD01 | Invention patent application deemed withdrawn after publication |