CN103008871A - Friction welding process for novel bainite/martensite duplex-phase steel drill pipe - Google Patents
Friction welding process for novel bainite/martensite duplex-phase steel drill pipe Download PDFInfo
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- CN103008871A CN103008871A CN2012105413389A CN201210541338A CN103008871A CN 103008871 A CN103008871 A CN 103008871A CN 2012105413389 A CN2012105413389 A CN 2012105413389A CN 201210541338 A CN201210541338 A CN 201210541338A CN 103008871 A CN103008871 A CN 103008871A
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Abstract
The invention discloses a friction welding process for a novel bainite/martensite duplex-phase steel drill pipe. During the welding of the novel bainite/martensite duplex-phase steel drill pipe with welding outer diameter being 3.2-5.7in, wending inner diameter being 2.0-3.8in and welding area being 3-14in<2>, the friction welding process comprises the following welding parameters of: special energy being 80000-100000 ft-1b/in<2>, special load being 18000-20000 1b/in<2>, linear speed being 1200ft/min, hydraulic thrust oil cylinder area being 109.56in<2>, rotating speed being 920 plus or minus 20rpm, upset forging pressure being 1200 plus or minus 40psi, pressure maintaining time being 35 plus or minus 1s and theoretical displacement being 0.625 plus or minus 0.1in. During welding by using the welding parameters, the actual displacement is 0.616in. The friction welding process for the novel bainite/martensite duplex-phase steel drill pipe has the beneficial effects that the quality of welded parts is good, the bonding strength is high, the pipe body and the joints are well welded, the stability is greatly improved, the process is simple and convenient, the production efficiency is high and the processing property of the welded parts of the drill pipe is enhanced.
Description
Technical field
The present invention relates to drilling tool welding procedure field, particularly relate to a kind of friction-welding technique method of novel shellfish horse Multiphase Steel material drilling rod.
Background technology
Oil drill rocker is the main tool of oil drilling, and its structure comprises the tool joint at drill pipe body and drill pipe body two ends.In the exploitation and extractive process of oil gas, require drill pipe body must be able to bear huge interior external pressure, distortion, bending and vibration.Along with the development of petroleum industry, increasing deep-well, ultradeep well are developed, and this has just proposed more and more higher requirement to drilling rod
The problems such as the butt welding between early stage joint of petroleum drill rod and the body is arc welding, flash butt welding, and still there is poor welding quality in this Type of Welding, and welding process is unstable, and efficient is low, labour intensity is large.Develop into progressively now that Continuous Drive Friction Welding connects and inertia friction weld, the production efficiency of drilling rod butt welding is more and more higher, and the quality of weld seam is also become better and better.But welding does not also have the complete friction-welding technique of a cover for bainite/martensite multi-phase steel novel light drilling rod at present.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of friction-welding technique of novel shellfish horse Multiphase Steel material drilling rod is provided.
To achieve these goals, the present invention the technical scheme that adopts for the friction-welding technique of novel shellfish horse Multiphase Steel material drilling rod be:
A kind of friction-welding technique of novel shellfish horse Multiphase Steel material drilling rod comprises as follows:
For the welding external diameter be 3.2～5.7in, the welding internal diameter be 2.0～3.8 and bonding area be 3～14in
2The welding of novel shellfish horse Multiphase Steel material drilling rod the time, welding parameter is: special energy: 80000-100000 ft-lb/ in
2Specific loads: 18000-20000 lb/ in
2Linear velocity: begin to calculate with 1200ft/min; Hydraulic thrust oil cylinder area: 109.56 in
2Rotating speed: 920 ± 20r/min; Upsetting force: 1200 ± 40psi; Dwell time: 35 ± 1s; Theoretical displacement is: 0.625 ± 0.1in; During with this welding parameter welding, the actual displacement amount is 0.616in.
The linear velocity that calculates should be between 900 ft/min-1450 ft/min, because the cause of flywheel, if can not obtain desirable linear velocity value, the first selection is and the immediate value of minimum 900 ft/min that the second selection is and is higher than the immediate value of 1450 ft/min.
Compared with prior art, the invention has the beneficial effects as follows:
Make that its welding position quality is good, bond strength is high, body and joint welding are good, and stability improves greatly, simple process, and production efficiency is high, thereby has strengthened the processing performance at drilling rod butt welding position.
The specific embodiment
Be 5.8in for welding external diameter 3.9in, welding internal diameter 2.8in and bonding area
2The time, welding parameter is: special energy: 87500 ft-lb/ in
2Specific loads: 18750 lb/ in
2Linear velocity: 940ft/min; Hydraulic thrust oil cylinder area: 109.56 in
2Rotating speed: 940r/min; Upsetting force: 1220psi; Dwell time: 35s; Theoretical displacement is: 0.625in; During with this welding parameter welding, the actual displacement amount is 0.616in.
Claims (2)
1. the friction-welding technique of a novel shellfish horse Multiphase Steel material drilling rod is characterized in that the technical process of described method is:
For the welding external diameter be 3.2～5.7in, the welding internal diameter be 2.0～3.8 and bonding area be 3～14in
2The welding of novel shellfish horse Multiphase Steel material drilling rod the time, welding parameter is: special energy: 80000-100000 ft-lb/ in
2Specific loads: 18000-20000 lb/ in
2Linear velocity: begin to calculate with 1200ft/min; Hydraulic thrust oil cylinder area: 109.56 in
2Rotating speed: 920 ± 20r/min; Upsetting force: 1200 ± 40psi; Dwell time: 35 ± 1s; Theoretical displacement is: 0.625 ± 0.1in; During with this welding parameter welding, the actual displacement amount is 0.616in.
2. the friction-welding technique of a kind of novel shellfish horse Multiphase Steel material drilling rod according to claim 1, it is characterized in that: the linear velocity that calculates should be between 900 ft/min-1450 ft/min, because the cause of flywheel, if can not obtain desirable linear velocity value, the first selection is and the immediate value of minimum 900 ft/min that the second selection is and is higher than the immediate value of 1450 ft/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105413389A CN103008871A (en) | 2012-12-14 | 2012-12-14 | Friction welding process for novel bainite/martensite duplex-phase steel drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105413389A CN103008871A (en) | 2012-12-14 | 2012-12-14 | Friction welding process for novel bainite/martensite duplex-phase steel drill pipe |
Publications (1)
| Publication Number | Publication Date |
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| CN103008871A true CN103008871A (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105413389A Pending CN103008871A (en) | 2012-12-14 | 2012-12-14 | Friction welding process for novel bainite/martensite duplex-phase steel drill pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637461A (en) * | 2018-07-12 | 2018-10-12 | 江苏锢邦智能装备有限公司 | A kind of inertia friction weld equipment |
| CN114799481A (en) * | 2022-04-27 | 2022-07-29 | 河南中原特钢装备制造有限公司 | Friction welding method for medium-carbon alloy structural steel large-diameter pipe fitting |
Citations (6)
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| WO1997049520A1 (en) * | 1996-06-24 | 1997-12-31 | Sandvik Ab (Publ) | Friction welded drill rod and method for manufacturing the rod |
| CN2511426Y (en) * | 2001-11-24 | 2002-09-18 | 安达市庆升摩擦焊油管修复厂 | Manufacture of oil pipe and external thickened short joint by friction welding |
| WO2003076761A1 (en) * | 2002-03-12 | 2003-09-18 | Sandvik Ab | Drill member for rock drilling and a method for manufacturing the drill member |
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| CN102267005A (en) * | 2011-06-27 | 2011-12-07 | 江苏融泰石油科技股份有限公司 | Friction welding method for welding type extra-heavy drill rod |
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2012
- 2012-12-14 CN CN2012105413389A patent/CN103008871A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| WO1997049520A1 (en) * | 1996-06-24 | 1997-12-31 | Sandvik Ab (Publ) | Friction welded drill rod and method for manufacturing the rod |
| CN2511426Y (en) * | 2001-11-24 | 2002-09-18 | 安达市庆升摩擦焊油管修复厂 | Manufacture of oil pipe and external thickened short joint by friction welding |
| WO2003076761A1 (en) * | 2002-03-12 | 2003-09-18 | Sandvik Ab | Drill member for rock drilling and a method for manufacturing the drill member |
| CN1477226A (en) * | 2003-08-01 | 2004-02-25 | 清华大学 | Medium-low carbon manganese system self-hardening bainite steel |
| CN1762637A (en) * | 2005-10-28 | 2006-04-26 | 大庆油田康泰实业公司 | Friction welding method for making short tie-in oil pipe |
| CN102267005A (en) * | 2011-06-27 | 2011-12-07 | 江苏融泰石油科技股份有限公司 | Friction welding method for welding type extra-heavy drill rod |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637461A (en) * | 2018-07-12 | 2018-10-12 | 江苏锢邦智能装备有限公司 | A kind of inertia friction weld equipment |
| CN114799481A (en) * | 2022-04-27 | 2022-07-29 | 河南中原特钢装备制造有限公司 | Friction welding method for medium-carbon alloy structural steel large-diameter pipe fitting |
| CN114799481B (en) * | 2022-04-27 | 2023-09-26 | 河南中原特钢装备制造有限公司 | Friction welding method for large-diameter pipe fitting of medium-carbon alloy structural steel |
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Application publication date: 20130403 |