CN106755902A - The Technology for Heating Processing of drill pipe body - Google Patents
The Technology for Heating Processing of drill pipe body Download PDFInfo
- Publication number
- CN106755902A CN106755902A CN201510809164.3A CN201510809164A CN106755902A CN 106755902 A CN106755902 A CN 106755902A CN 201510809164 A CN201510809164 A CN 201510809164A CN 106755902 A CN106755902 A CN 106755902A
- Authority
- CN
- China
- Prior art keywords
- drill pipe
- pipe body
- technology
- quenching
- heating processing
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural 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
Have compared with high-mechanical property the present invention relates to a kind of Technology for Heating Processing of body, especially a kind of manufacture
The quenching of drill pipe 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 drill pipe body and drill pipe body two ends
Tool joint.In the exploitation and extractive process of oil gas, it is desirable to which drill pipe body allows for bearing huge interior
External pressure, distortion, bending and vibration.
With continuing to develop for petroleum industry, increasing deep-well, ultradeep well are developed, this to drilling rod just
Propose higher and higher requirement.Intensity highest is S135 grade of steels in current API series drilling rod, but with
The increase of drilling depth, to the intensity requirement of drilling rod also being continuously increased, the drilling rod of S135 grade of steels without
Method meets 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 grade of steels are bored
Bar proposes requirement higher to raw material and heat treatment capacity.Disclosed Technology for Heating Processing domestic at present,
The technical requirements of V150 steel grade drill pipes are extremely difficult to, the tensile property of the drill pipe body after being especially heat-treated
Requirement can not be met, 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 a kind of manufacture that is reliable, being easy to operation and meets V150
The Technology for Heating Processing of the drill pipe body of grade of steel.
In order to solve the above technical problems, the technical solution used in the present invention includes quenching, tempering, for heat
The steel grades and content of handling process are, 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, as follows and technological parameter
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
Minute,
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 many
In 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, 60-85 points of insulation
Clock, then drill pipe body is come out of the stove, naturally cool 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 rotation is carried out in quenching liquid, autorotation speed is 70-100
Rev/min.
1. 2. processed with step after drill pipe body is not more than 200 according to step, do 1 upset end and brill
The mechanical test of rod tube body, pilot project be tensile strength and ballistic work, it is qualified after, storage.This step
Suddenly it is to strengthen quality monitoring.Described ballistic work test underproof drill pipe body again according to step 1.
2. quenched, tempering heat treatment, again quenching, tempering heat treatment number of times be no more than three times.
During described ballistic work pass the test, 2. the higher drill pipe body of tensile strength is carried out according to step again
Tempering, times of tempering is no more than three times, and 1. and 2. the drill pipe body of low cross-intensity enters according to step again
Row quenching, tempering heat treatment, 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
It is good, compared with the 54J of V150 grade of steel standard values, beyond more than 30%；And the drilling rod after heat treatment
The mechanical index such as intensity, the elongation percentage of body reach the requirement of V150 grade of steels, have filled up sky both domestic and external
In vain；The heat treatment step that the present invention is set is simple, and technological parameter rationally, processes 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, it is remaining
It is Fe to measure, and unit is mass percent.It is heat-treated according to the following steps：
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 of speed carries out rotation, and 40 seconds cool times, the wherein temperature of quenching liquid are by cooling
Tower is adjusted, and drill pipe body is, for quick, uniform hardening, to be formed tiny, uniform with given pace rotation
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, be incubated
70 minutes；Drill pipe body is come out of the stove again, naturally cools to room temperature.Through above heat treatment step, drill pipe body
Mechanical performance it 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, crystal grain is tiny
Even, upset end inside and outside wall is 10 grades, and 9 grades of inboard wall of tube body, 9.5 grades of outer wall, are drill pipe body
The performance of the aspect such as tension, antifatigue is provided and ensured.
After according to above-mentioned steps quenching, tempering heat treatment drill pipe body 100,1 upset end and brill are done
Used as quality monitoring, pilot project is tensile strength and ballistic work to the mechanical test of rod tube body.Two examinations
The technical requirements that result meets V150 grade of steels are tested, 100 drill pipe bodies of above-mentioned treatment are put in storage.
If ballistic work is tested underproof drill pipe body and 1. and 2. being quenched according to step again, being tempered hot place
Reason, quenching, the number of times of tempering heat treatment are no more than three times again.
When 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 again
Fire, tempering heat treatment, quenching, tempering heat treatment number of times are no more than three times again.
Claims (3)
1. a kind of Technology for Heating Processing of drill pipe body, including quenching, tempering, for the steel grades of Technology for Heating Processing
And content is, 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 quality
Percentage, it is characterised in that 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, 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
Second, described drill pipe body carries out rotation in quenching liquid, and autorotation speed is 70-100 revs/min, institute
The quenching liquid stated is running water, and the temperature of quenching liquid is adjusted by cooling tower,
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.
2. the Technology for Heating Processing of drill pipe body according to claim 1, it is characterised in that the drill pipe after quenching
Body was tempered in four hours.
3. the Technology for Heating Processing of drill pipe body according to claim 1, it is characterised in that according to step 1. and
2. step is processed after drill pipe body is not more than 200, does the mechanical performance of 1 upset end and drill pipe body
Experiment, pilot project is tensile strength and ballistic work, warehousing after passing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510809164.3A CN106755902A (en) | 2015-11-19 | 2015-11-19 | The Technology for Heating Processing of drill pipe body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510809164.3A CN106755902A (en) | 2015-11-19 | 2015-11-19 | The Technology for Heating Processing of drill pipe body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106755902A true CN106755902A (en) | 2017-05-31 |
Family
ID=58885832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510809164.3A Pending CN106755902A (en) | 2015-11-19 | 2015-11-19 | The Technology for Heating Processing of drill pipe body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106755902A (en) |
Cited By (2)
| 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 |
| CN109402350A (en) * | 2018-11-27 | 2019-03-01 | 中车北京南口机械有限公司 | A kind of heat treatment process of steel |
-
2015
- 2015-11-19 CN CN201510809164.3A patent/CN106755902A/en active Pending
Cited By (2)
| 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 |
| CN109402350A (en) * | 2018-11-27 | 2019-03-01 | 中车北京南口机械有限公司 | A kind of heat treatment process of steel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |
|
| WD01 | Invention patent application deemed withdrawn after publication |