CN102337387A - Heat treatment process of sulfur-resistant petroleum drill rod joint - Google Patents
Heat treatment process of sulfur-resistant petroleum drill rod joint Download PDFInfo
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- CN102337387A CN102337387A CN2011103335111A CN201110333511A CN102337387A CN 102337387 A CN102337387 A CN 102337387A CN 2011103335111 A CN2011103335111 A CN 2011103335111A CN 201110333511 A CN201110333511 A CN 201110333511A CN 102337387 A CN102337387 A CN 102337387A
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Abstract
The invention discloses a heat treatment process of a sulfur-resistant petroleum drill rod joint. Quenching is performed twice and tempering is performed three times in the heat treatment process. The specific process steps and the process parameters are as follows: placing a workpiece in a box type quenching furnace for heating, filling nitrogen into the furnace, heating, keeping the temperature for a period of time, and then putting into an oil tank for quenching; performing first high-temperature tempering treatment after the workpiece is cooled to room temperature; implementing second quenching treatment, re-placing the workpiece into the box type quenching furnace for heating, filling the nitrogen into the furnace, heating, keeping the temperature for a period of time, and then putting into the oil tank for quenching; further performing second high-temperature tempering treatment; and performing the high-temperature tempering treatment again. In the invention, the quenching is performed twice, the quenching temperature is increased, and the high-temperature tempering treatment is performed three times, thereby enabling the metallurgical structure of the workpiece to form a fine and uniform martensite, enabling the molybdenum element in the workpiece to be fully dissolved in each crystal lattice and further improving the grain size of the workpiece to above grade 10. The heat treatment process disclosed by the invention can also be used as a heat treatment process of sulfur-resistant petroleum drill rod joints in other specifications.
Description
Technical field
The present invention relates to a kind of metal heat treatmet technology, specifically, the present invention relates to a kind of anti-sulphur heat treatment process for joint of petroleum drill rod.
Background technology
Joint of petroleum drill rod is a kind of HS rod member of directly bearing high pulling torque, adopts the superior alloy steel manufacturing of the high molybdenum class of low-carbon (LC) usually, and such material after heat treatment can satisfy actual request for utilization fully.Joint of petroleum drill rod belongs to heavier walled fitting, is difficult for through hardening, and prior heat treatment process adopts the heating of well formula quenching furnance.Concrete thermal treatment process is that primary quenching is implemented the double tempering processing afterwards, and quenching is heated to 860 ℃ ± 10 ℃, behind insulation 60min ± 5min, drops in the oil groove and quenches; Tempering temperature is controlled at 620 ℃ ± 10 ℃ for the first time, behind insulation 120min ± 5min, drops into cooling fast in the water; Again make temper again one time, the tempering heating is controlled at 640 ℃ ± 10 ℃, drops into cooling fast in the water at insulation 120min ± 5min.Inspection by sampling after the thermal treatment, sample each item mechanical property all reaches design requirements, its grain fineness number reaches 9 grades, sample the anticorrosive time in the hydrogen sulfide solution between 70～80 hours, meet the anticorrosive condition of conventional oil drilling rod.But, in the high-sulfur area or the oil drill rocker that uses of ocean area,, require the kinds of anti-sulfur corrosion ability to be higher than the conventional oil drilling rod because of the geology sulfur-bearing is many, do not reach anti-sulphur requirement with the oil drill rocker of prior heat treatment process processing.
Summary of the invention
The present invention is primarily aimed at the deficiency of prior art; Propose a kind of anti-sulphur heat treatment process for joint of petroleum drill rod, this technology is rationally arranged operation, reasonable ordering parameter, workpiece metallographic structure refinement more after the thermal treatment; Effectively improve grain size number, significantly increase the kinds of anti-sulfur corrosion ability.
The present invention realizes technical object through following technical proposals.
Anti-sulphur heat treatment process for joint of petroleum drill rod, its improvements are that it adopts three tempering of twice quenching, and concrete process step and processing parameter are following:
(1) places sealed box type quenching furnace to heat the anti-sulphur joint of petroleum drill rod of workpiece, charge into nitrogen in the stove, be heated to 920 ℃ ± 5 ℃, after insulation 100min ± 5min, put in the oil groove and quench;
(2) treat to do high tempering processing first after work-piece cools to the room temperature, tempering is heated to 600 ℃ ± 10 ℃, drops into cooling fast in the water behind insulation 120min ± 5min;
(3) implement quench treatment for the second time, the anti-sulphur joint of petroleum drill rod of workpiece is inserted in the sealed box type quenching furnace again heat, charge into nitrogen in the stove, be heated to 890 ℃ ± 5 ℃, behind insulation 100min ± 5min, put in the oil groove and quench;
(4) then carry out the high tempering processing second time, tempering is heated to 680 ℃ ± 5 ℃, drops into cooling fast in the water behind insulation 120min ± 5min;
(5) make high tempering again and handle, tempering is heated to 687 ℃ ± 5 ℃, drops into cooling fast in the water behind insulation 120min ± 5min.
The present invention compared with prior art has following positively effect:
1, because of workpiece is a heavier walled fitting, suitably increases soaking time, help inside and outside heat penetration, eliminate internal stress, effectively improve the quenching quality;
2, workpiece is relatively large, and enforcement quenching path is longer relatively, suitably improves quenching temperature, can guarantee to quench in set temperature value;
3, handle through suitably improving quenching temperature and high tempering, make the workpiece metallographic structure form tiny and uniform martensite, molybdenum element wherein fully is dissolved in each intergranular, thereby the grain fineness number that improves the workpiece material reaches more than 10 grades.
Embodiment
Below in conjunction with embodiment the present invention is described further.
Anti-sulphur heat treatment process for joint of petroleum drill rod, it adopts three tempering of twice quenching, and concrete process step and processing parameter are following:
(1) places sealed box type quenching furnace to heat the anti-sulphur joint of petroleum drill rod of workpiece, charge into nitrogen in the stove, be heated to 920 ℃ ± 5 ℃, after insulation 100min ± 5min, put in the oil groove and quench;
(2) treat to do high tempering processing first after work-piece cools to the room temperature, tempering is heated to 600 ℃ ± 10 ℃, drops into cooling fast in the water behind insulation 120min ± 5min;
(3) implement quench treatment for the second time, the anti-sulphur joint of petroleum drill rod of workpiece is inserted in the sealed box type quenching furnace again heat, charge into nitrogen in the stove, be heated to 890 ℃ ± 5 ℃, behind insulation 100min ± 5min, put in the oil groove and quench;
(4) then carry out the high tempering processing second time, tempering is heated to 680 ℃ ± 5 ℃, drops into cooling fast in the water behind insulation 120min ± 5min;
(5) make high tempering again and handle, tempering is heated to 687 ℃ ± 5 ℃, drops into cooling fast in the water behind insulation 120min ± 5min.
Embodiment is latus rectum Φ 152.4 anti-sulphur joint of petroleum drill rod, and its material is 37CrMnMo.Adopt 3 embodiment to verify the present invention, concrete technology and parameter are seen table 1.Sample and 3 control sample of prior art of 3 embodiment of the present invention are made measuring mechanical property respectively, and concrete measuring mechanical property content and data are seen table 2.
Table 1: technology and parameter list
Table 2: measuring mechanical property table
The present invention is through twice quenching and improve quenching temperature and three high temperings processing, makes the workpiece metallographic structure form tiny and uniform martensite, and molybdenum element wherein fully is dissolved in each intergranular, thereby the grain fineness number of workpiece is brought up to more than 10 grades.The anti-sulphur joint of petroleum drill rod of same applicable other each specification of the present invention.
Claims (1)
1. anti-sulphur heat treatment process for joint of petroleum drill rod is characterized in that it adopts three tempering of twice quenching, and concrete process step and processing parameter are following:
(1) places sealed box type quenching furnace to heat the anti-sulphur joint of petroleum drill rod of workpiece, charge into nitrogen in the stove, be heated to 920 ℃ ± 5 ℃, after insulation 100min ± 5min, put in the oil groove and quench;
(2) treat to do high tempering processing first after work-piece cools to the room temperature, tempering is heated to 600 ℃ ± 10 ℃, drops into cooling fast in the water behind insulation 120min ± 5min;
(3) implement quench treatment for the second time, the anti-sulphur joint of petroleum drill rod of workpiece is inserted in the sealed box type quenching furnace again heat, charge into nitrogen in the stove, be heated to 890 ℃ ± 5 ℃, behind insulation 100min ± 5min, put in the oil groove and quench;
(4) then carry out the high tempering processing second time, tempering is heated to 680 ℃ ± 5 ℃, drops into cooling fast in the water behind insulation 120min ± 5min;
(5) make high tempering again and handle, tempering is heated to 687 ℃ ± 5 ℃, drops into cooling fast in the water behind insulation 120min ± 5min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103335111A CN102337387A (en) | 2011-10-28 | 2011-10-28 | Heat treatment process of sulfur-resistant petroleum drill rod joint |
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| CN2011103335111A CN102337387A (en) | 2011-10-28 | 2011-10-28 | Heat treatment process of sulfur-resistant petroleum drill rod joint |
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| CN102337387A true CN102337387A (en) | 2012-02-01 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233110A (en) * | 2013-04-28 | 2013-08-07 | 江苏曙光石油钻采设备有限公司 | Thick-wall heavy-caliber duct joint heat processing technology |
| CN103233113A (en) * | 2013-04-28 | 2013-08-07 | 江苏曙光石油钻采设备有限公司 | Heat treatment process of welded type weighted drill rod joint |
| CN103243202A (en) * | 2013-04-16 | 2013-08-14 | 东营信盛机械有限公司 | Thermal treatment processing technology for transmission shaft of petroleum drilling and production equipment |
| CN104404207A (en) * | 2014-12-24 | 2015-03-11 | 江苏隆盛钻采机械制造有限公司 | Heat treatment technique of oil drill pipe sub |
| CN104894342A (en) * | 2015-05-26 | 2015-09-09 | 成都高普石油工程技术有限公司 | Machining method of petroleum drilling rod |
| CN106048170A (en) * | 2016-07-20 | 2016-10-26 | 柳州科尔特锻造机械有限公司 | Rapid tempering method for alloy steel |
| CN111057965A (en) * | 2019-12-30 | 2020-04-24 | 钢铁研究总院 | Ocean engineering steel with low yield ratio and preparation method thereof |
| CN112375996A (en) * | 2020-11-16 | 2021-02-19 | 江苏联峰能源装备有限公司 | Steel for petroleum drill pipe joint and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1603429A (en) * | 2004-11-01 | 2005-04-06 | 江苏曙光石油钻具有限公司 | Heat treatment process for joint of petroleum drill rod |
| CN1986843A (en) * | 2005-12-20 | 2007-06-27 | 渤海能克钻杆有限公司 | Heat treatment process of sulfur resistant drill pipe joint |
-
2011
- 2011-10-28 CN CN2011103335111A patent/CN102337387A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1603429A (en) * | 2004-11-01 | 2005-04-06 | 江苏曙光石油钻具有限公司 | Heat treatment process for joint of petroleum drill rod |
| CN1986843A (en) * | 2005-12-20 | 2007-06-27 | 渤海能克钻杆有限公司 | Heat treatment process of sulfur resistant drill pipe joint |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243202A (en) * | 2013-04-16 | 2013-08-14 | 东营信盛机械有限公司 | Thermal treatment processing technology for transmission shaft of petroleum drilling and production equipment |
| CN103233110A (en) * | 2013-04-28 | 2013-08-07 | 江苏曙光石油钻采设备有限公司 | Thick-wall heavy-caliber duct joint heat processing technology |
| CN103233113A (en) * | 2013-04-28 | 2013-08-07 | 江苏曙光石油钻采设备有限公司 | Heat treatment process of welded type weighted drill rod joint |
| CN104404207A (en) * | 2014-12-24 | 2015-03-11 | 江苏隆盛钻采机械制造有限公司 | Heat treatment technique of oil drill pipe sub |
| CN104894342A (en) * | 2015-05-26 | 2015-09-09 | 成都高普石油工程技术有限公司 | Machining method of petroleum drilling rod |
| CN106048170A (en) * | 2016-07-20 | 2016-10-26 | 柳州科尔特锻造机械有限公司 | Rapid tempering method for alloy steel |
| CN111057965A (en) * | 2019-12-30 | 2020-04-24 | 钢铁研究总院 | Ocean engineering steel with low yield ratio and preparation method thereof |
| CN112375996A (en) * | 2020-11-16 | 2021-02-19 | 江苏联峰能源装备有限公司 | Steel for petroleum drill pipe joint and preparation method thereof |
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Application publication date: 20120201 |