CN1215643A - Pipe friction welding and welding area welding heat treatment method and device - Google Patents
Pipe friction welding and welding area welding heat treatment method and device Download PDFInfo
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- CN1215643A CN1215643A CN 97107168 CN97107168A CN1215643A CN 1215643 A CN1215643 A CN 1215643A CN 97107168 CN97107168 CN 97107168 CN 97107168 A CN97107168 A CN 97107168A CN 1215643 A CN1215643 A CN 1215643A
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Abstract
A method and its apparatus for friction welding of tubular material and thermal treatment of welded area features that in the butt-forge deformation of ordinary friction welding, a motor brake method is used to control the deformed amount and the heat of friction welding is directly used to quench the internal and external wall of welded tubes for increasing toughness highier than that of mother material and eliminating softened area caused by weld tempering. Its advantages are high mechanical properties of welded long tube, high productivity and saving energy.
Description
The present invention relates to a kind of tubing friction welding and utilize the friction welding heat directly to carry out welding zone heat-treating methods and device, be mainly used in the butt welding and the welding zone heat treatment of long metal pipe material, belong to mechanical industry.
The long metal pipe material that traditional friction-welding technique is produced, there are two weak links in mechanical performance in welding heat affected zone, respectively there are a low intensive softened zone in the high fragility and the seam face both sides that are seam face, these two weak links directly affect the total quality of welded pipe, have seriously reduced the maximum of welded pipe and have used ability.Chinese patent CN1050409A has proposed to utilize the heating thermal source of joint welding heat source as the joint quenching, Quenching Treatment is carried out in butt joint immediately after welding process finishes, and then carry out temper, when the method makes welding point obtain the phase transformation Strengthening and Toughening, preserved the deformation Strengthening and Toughening effect that joint obtains again in welding process, the welding zone comprehensive mechanical performance increases, and has suppressed seam and softened zone, both sides influence degree.But because this method is only quenched to the pipe outer jet, the cooldown rate of the inside and outside welding zone of pipe is differed greatly on the one hand, cause the inside and outside mechanical performance of tube wall inconsistent.Owing to deformation quantity is not carried out reasonably control, can't make the welding zone material reach the mechanical performances such as impact flexibility that the best due performance of thermomechanical treatment, especially ballistic work fails to reach mother metal on the other hand.Its quenching coil structures complexity is in addition made, mounting process is not good enough.
The purpose of this invention is to provide a kind of two weak links eliminating in the tubing friction welding (FW) post weld heat treatment zone of influence, friction welding (FW) that the harmful effect that makes seam face toughness surpass base metal tenacity, softened zone disappears substantially and welding zone weldering heat-treating methods.
Another object of the present invention provides the process unit of realizing above-mentioned purpose, and makes that it is simple in structure, good manufacturability, easy to operate.
To achieve these goals, tubing friction welding (FW) of the present invention and welding zone weldering heat-treating methods, comprise friction welding, deformation, three technologies of quenching, in welding process, when friction adds thermal weld deformation end, carry out upset deformation immediately, certain moment before upsetting force disappears, directly utilize the friction welding heat to carry out the welding zone Quenching Treatment, in described upset deformation, need control upset deformation quantity, its deformation quantity adopts the control of dynamic braking method, in described Quenching Treatment, at the inside and outside wall cooling welding zone of welded pipe, hardening media divides external cooling medium and interior cold medium to hardening media simultaneously; The external cooling medium directly sprays to the outer wall welding zone through the two-stage atomizing, and interior cold medium flows through the inwall welding zone through welded pipe; Interior external cooling medium makes welding zone speed be chilled to martensite or pearlite or lower bainite transition temperature point, immediately welding zone is incubated the sufficiently long time in this humidity province then, impels the welding zone quenching structure to martensite or pearlite or lower bainite transformation.
Adopt the welding quenching unit of aforementioned tubes friction welding (FW) and welding zone welding heat processing method, comprise friction-welding machine, deformation control device and quenching unit, connect the deformation quantity control device on the main motor of friction-welding machine, this control device is made up of rectification braking circuit and brake control circuit, and the rectification braking circuit is in parallel with the power line of main motor; Brake control circuit is in parallel with the interlocking of Electric Machine Control circuit; Described quenching unit is made up of external cooler, interior device for cooling and heat insulation and heating equipment; External cooler provides gas, liquid cooling respectively by two, and but pipe-line system, primary atomization chamber and two semicircle pipelines that several secondary-atomizing shower nozzles have been installed of medium are formed, gas, liquid source pipe-line system are joined with gas, the liquid input port of primary atomization chamber respectively, the delivery outlet of primary atomization chamber links to each other with two semicircle pipelines, two rounded weldment joints that are installed in relatively on the welding machine of semicircle pipeline, and concentric with the weldment axis; Interior device for cooling provides the power piping system of fluid cooling media and seal nipple to form by one; Power piping system links to each other with the static port of welded pipe through seal nipple.
Advantage of the present invention is: (1) realizes dynamic braking control upset deformation quantity to the main motor of friction-welding machine, increased the choice of deformation mechanism, controlled the dislocation density near the material microstructure of seam face effectively, promote that dislocation wall forms, carbide along sub boundary distribute, subgrain organizes extremely abundant, tiny, size to reach 200A °, form " polygonization " structure, thereby improved the impact flexibility at seam face place significantly, even surpassed mother metal.Increase the deflection of welding heat refined zone simultaneously, make the obvious refinement of this zone crystal grain, grain size reach 11-12 level (mother metal is the 6-7 level only), and substructure is abundant, carbide is spherical disperse and distributes, and the intensity of refined zone is improved greatly, the softened zone disappears substantially.(2) quench simultaneously inside and outside the welding zone pipe, improved the quenching degree of welding zone effectively, also improved the mechanical performance of welding zone tissue effectively, especially impact flexibility obviously improves.(3) external cooler adopts secondary atomizing scheme, has excellent performance, and simple in structure, fitting operation is characteristics easily.
Below in conjunction with drawings and Examples the present invention is described in further detail.
Fig. 1 welds the quenching unit structure chart for the present invention.
Fig. 2 is master's energy consumption of electrical machinery braking circuit figure of the present invention.
Fig. 3 is an external cooler pipe-line system schematic diagram of the present invention.
On friction-welding machine shown in Figure 1, in rotary chuck 1 and mobile anchor clamps 5, clamp respectively by welded pipe joint 2 with by welded tube 4, on the main motor of driving rotary chuck the dynamic braking device has been installed.Among the main energy consumption of electrical machinery braking circuit figure shown in Figure 2, transformer 9 is in parallel with the power line interlocking of main motor 11 with the braking circuit that rectifier 10 is formed, brake control circuit 12 is in parallel with main motor rotation control circuit 13 interlockings, during motor rotation, contactor 1XC work, contactor HC outage, braking circuit disconnects; During power cut, contactor 1XC cuts off the power supply, HC work, and braking circuit is connected, and applies a D.C. magnetic field on the winding of motor, hinders motor rotation, by adjustment voltage adjustable magnetic fields power, thus the size of adjusting brake force.
Its quenching unit comprises external cooler, interior device for cooling and heat insulation and heating equipment, external cooler shown in Figure 3 is by providing quenching liquid and compressed-air actuated two pipe- line systems 14,15, primary atomization chamber 16 and two semicircle pipelines 3 to form respectively, quenching liquid and compressed air converge in the primary atomization chamber and atomize, through single tube 8 hardening media behind the primary atomization is sent into semicircle pipeline, after the secondary-atomizing nozzle of semicircle pipeline is with the hardening media secondary-atomizing, spray to the weld zone again, secondary-atomizing had both reduced transfer pipeline on the welding machine, had improved the medium atomization effect again.Be annular as two semicircle pipelines 3 of the outer quenching device of Fig. 1 and be installed on the welding machine by the welded pipe joint place, annulus is folding easily, so that the weldment clamping, circle ring center makes quenching effect unanimity on 360 ° of circumference with concentric by welded tube; The power piping system 7 of interior device for cooling through seal nipple 6 with linked to each other by the stiff end of welded tube, during quenching, power piping system 7 work, cold MEDIA FLOW is crossed the inside pipe wall welding zone to play the effect of rapid cooling in making, welding zone speed is chilled to martensite, pearlite or lower bainite transition temperature point, be incubated the sufficiently long time through heat insulation and heating equipment again, impel the welding zone quenching structure to change, guarantee the comprehensive mechanical performance of welding zone to martensite, pearlite or lower bainite.
Claims (8)
1. tubing friction welding (FW) and welding zone weldering heat-treating methods, it comprises friction welding, deformation, three technologies of quenching, in welding process, when friction adds thermal weld deformation end, carry out upset deformation immediately, certain moment before upsetting force disappears, directly utilize the friction welding heat to carry out the welding zone Quenching Treatment, it is characterized in that: in described upset deformation, need control upset deformation quantity; In described Quenching Treatment, hardening media cools off welding zone at the inside and outside wall of welded pipe simultaneously.
2. tubing friction welding (FW) as claimed in claim 1 and welding zone weldering heat-treating methods is characterized in that: by dynamic braking method control welding zone upset deformation quantity.
3. tubing friction welding (FW) as claimed in claim 1 and welding zone weldering heat-treating methods is characterized in that: described hardening media to welding zone pipe inside and outside wall while Quenching Treatment is divided into external cooling medium and interior cold medium; The external cooling medium directly sprays to the outer wall welding zone through the two-stage atomizing; Interior cold medium flows through the inwall welding zone through welded pipe.
4. as claim 1 or 3 described tubing friction welding (FW)s and welding zone weldering heat-treating methods, it is characterized in that: described hardening media is simultaneously to welded pipe inside and outside wall cooling welding zone, make welding zone speed be as cold as martensite or pearlite or lower bainite transition temperature point, immediately welding zone is incubated the sufficiently long time in this humidity province then, impels the welding zone quenching structure to martensite or pearlite or lower bainite transformation.
5. welding quenching unit that adopts aforementioned tubes friction welding (FW) and welding zone welding heat processing method, it is characterized in that: it comprises friction-welding machine, deformation quantity control device and quenching unit; Connect the deformation quantity control device on the main motor of described friction-welding machine, quenching unit is installed on the friction-welding machine, quenching unit is made up of external cooler, interior device for cooling and heat insulation and heating equipment.
6. welding quenching unit as claimed in claim 5 is characterized in that: described deformation quantity control device is made up of rectification braking circuit and brake control circuit; The rectification braking circuit is in parallel with the power line of main motor; Brake control circuit is in parallel with the interlocking of main Electric Machine Control circuit.
7. welding quenching unit as claimed in claim 5 is characterized in that: described external cooler provides gas, liquid cooling respectively by two, and but pipe-line system, primary atomization chamber and two semicircle pipelines that several secondary-atomizing shower nozzles have been installed of medium are formed; Gas, liquid source pipe-line system are joined with gas, the liquid input port of primary atomization chamber respectively, and the delivery outlet of primary atomization chamber links to each other with two semicircle pipelines, two rounded weldment joints that are installed in relatively on the welding machine of semicircle pipeline, and concentric with the weldment axis.
8. welding quenching unit as claimed in claim 5 is characterized in that: device for cooling in described provides the power piping system of fluid cooling media and seal nipple to form by one; Described power piping system links to each other with the static port of welded pipe through seal nipple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97107168A CN1081106C (en) | 1997-10-24 | 1997-10-24 | Pipe friction welding and welding area welding heat treatment method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97107168A CN1081106C (en) | 1997-10-24 | 1997-10-24 | Pipe friction welding and welding area welding heat treatment method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1215643A true CN1215643A (en) | 1999-05-05 |
| CN1081106C CN1081106C (en) | 2002-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97107168A Expired - Fee Related CN1081106C (en) | 1997-10-24 | 1997-10-24 | Pipe friction welding and welding area welding heat treatment method and device |
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| CN (1) | CN1081106C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848071A (en) * | 2012-04-05 | 2013-01-02 | 东北石油大学 | Friction welding repair process for waste pipes |
| US9816328B2 (en) | 2012-10-16 | 2017-11-14 | Smith International, Inc. | Friction welded heavy weight drill pipes |
| CN107953025A (en) * | 2017-12-21 | 2018-04-24 | 重庆晓微城企业孵化器有限公司 | Air conditoner support welding cooling device |
| CN114845831A (en) * | 2019-11-27 | 2022-08-02 | 卡斯卡特公司 | Connection between a fork and a spreader on the fork |
| CN115246078A (en) * | 2022-07-04 | 2022-10-28 | 盐城耀晖人防防护设备科技有限公司 | Surface treatment device for strength improvement of civil air defense door bearing base plate |
| CN115505717A (en) * | 2022-09-28 | 2022-12-23 | 宝钢轧辊科技有限责任公司 | Roller center hole quenching method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10648049B2 (en) | 2015-04-14 | 2020-05-12 | Wellbore Integrity Solutions Llc | Heat treated heavy weight drill pipe |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD222231A1 (en) * | 1983-12-22 | 1985-05-15 | Ingenieurhochschule Koethen Pr | METHOD FOR EXTENDING THE FIELD OF APPLICATION OF FRICTION WELDING MACHINES |
| CN1015644B (en) * | 1990-11-03 | 1992-02-26 | 机械电子工业部哈尔滨焊接研究所 | Method of friction-welding joint deformation hot treatment and means thereof |
| CN2127962Y (en) * | 1992-06-27 | 1993-03-10 | 中国石油天然气总公司石油勘探开发科学研究院 | Friction welding oil suction rod |
-
1997
- 1997-10-24 CN CN97107168A patent/CN1081106C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848071A (en) * | 2012-04-05 | 2013-01-02 | 东北石油大学 | Friction welding repair process for waste pipes |
| US9816328B2 (en) | 2012-10-16 | 2017-11-14 | Smith International, Inc. | Friction welded heavy weight drill pipes |
| CN107953025A (en) * | 2017-12-21 | 2018-04-24 | 重庆晓微城企业孵化器有限公司 | Air conditoner support welding cooling device |
| CN114845831A (en) * | 2019-11-27 | 2022-08-02 | 卡斯卡特公司 | Connection between a fork and a spreader on the fork |
| CN115246078A (en) * | 2022-07-04 | 2022-10-28 | 盐城耀晖人防防护设备科技有限公司 | Surface treatment device for strength improvement of civil air defense door bearing base plate |
| CN115246078B (en) * | 2022-07-04 | 2023-06-23 | 盐城耀晖人防防护设备科技有限公司 | Surface treatment device for improving strength of bearing backing plate of civil air defense door |
| CN115505717A (en) * | 2022-09-28 | 2022-12-23 | 宝钢轧辊科技有限责任公司 | Roller center hole quenching method |
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| Publication number | Publication date |
|---|---|
| CN1081106C (en) | 2002-03-20 |
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