CN101869928B - Hydraulic steel pipe connector and extrusion forming method and production device thereof - Google Patents
Hydraulic steel pipe connector and extrusion forming method and production device thereof Download PDFInfo
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- CN101869928B CN101869928B CN2010103013927A CN201010301392A CN101869928B CN 101869928 B CN101869928 B CN 101869928B CN 2010103013927 A CN2010103013927 A CN 2010103013927A CN 201010301392 A CN201010301392 A CN 201010301392A CN 101869928 B CN101869928 B CN 101869928B
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Abstract
The invention discloses a hydraulic steel pipe connector and an extrusion forming method and a production device thereof. The hydraulic steel pipe connector extrusion forming method comprises the following steps that: step 1: preparing a steel pipe; step 2: high-frequency heating the connector end of the steel pipe so as to soften the connector end; step 3: extruding the connector end of the steel pipe to directly form a connector blank; step 4: mechanically processing the connector blank into a connector. The high-frequency heating direct-extruding formation is effectively combined with the working properties of the hydraulic steel pipe, so the hydraulic steel pipe connector has the advantages that: no weld seam exists, and the defects of the prior art can be avoided.
Description
Technical field
The present invention relates to a kind of hydraulic steel pipe connector and extrusion process thereof and production equipment thereof.
Background technology
Up to the present all hydraulic steel pipe production methods all adopt following steps both at home and abroad: step 1 is used to process steel pipe; Step 2 is used to process joint; Step 3 is used for welded still pipe and joint; Step 4 is used for machined, the weld of steel pipe and joint.Mainly there are following several big deficiencies in this method:
1, adopt welding procedure, weldquality is unstable, the weld heat-affected zone institutional framework changes, and tends to produce weld porosity, incomplete tusion etc. and cause hydraulic steel pipe defective (like phenomenons such as seepage oil, hydraulic steel pipe fractures);
2, a large amount of welding procedures are prone to cause surrounding enviroment to pollute, especially CO
2Gas purging is antipathetic with purifying environmental ambient air;
3, the ultraviolet ray of welding arc light generation damages the human eye;
4, adopt welding procedure, need materials such as a large amount of pipe joints, welding wire, welding rod, existence repeats processing and causes wastes such as the energy, labour;
5, hydraulic steel pipe is in cleaning process, and steel pipe is connected the frequent residual dirt of crack with joint, influence the Hydraulic Elements premature wear in the hydraulic system.
Summary of the invention
The invention provides a kind of hydraulic steel pipe connector and extrusion process thereof and production equipment thereof, it has overcome, and hydraulic steel pipe connector adopts the existing deficiency of welding processing in the background technology.
One of technical scheme that is adopted that the present invention solves its technical problem is:
The hydraulic steel pipe connector extrusion process, it comprises:
Step 1 is used to prepare steel pipe;
Step 2 is used to adopt the tip side of high-frequency heating steel pipe, the deliquescing so that tip side is heated;
Step 3 is used for extruding, is directly formed to the thick embryo of joint so that the tip side of steel pipe is squeezed;
Step 4 is used for the thick embryo of machined joint, to become joint.
Among one preferred embodiment: the temperature of said high-frequency heating is 700 ℃-800 ℃.
Among one preferred embodiment: the time of said high-frequency heating is 3 seconds-300 seconds.
Among one preferred embodiment: the said extruding dwell time is generally 10sec～120sec.
Among one preferred embodiment: said step 2 comprises:
Step 21 is used to adopt the tip side of high-frequency heating steel pipe, the deliquescing so that tip side is heated;
Step 22 is used for the tip side of steel pipe is put within the corresponding mould of joint.
Among one preferred embodiment: said step 2 comprises:
Step 21 is used for the tip side of steel pipe is put within the corresponding mould of joint;
Step 22 is used to adopt the tip side of high-frequency heating steel pipe, the deliquescing so that tip side is heated.
Among one preferred embodiment: said step 2 comprises:
Step 21 is used to adopt the tip side of high-frequency heating steel pipe, the deliquescing so that tip side is heated;
Step 22 is used for steel pipe is fixed on workbench;
Said step 3 is used to make mould to move towards the steel pipe direction, so that mould socket and push the tip side of steel pipe is directly formed to the thick embryo of joint so that the tip side of steel pipe is squeezed.
The present invention solve its technical problem the technical scheme that is adopted two be:
Hydraulic steel pipe connector, it comprises a steel pipe, the tip side of said steel pipe is squeezed by the high-frequency heating deliquescing again and is shaped to joint.
The present invention solve its technical problem the technical scheme that is adopted three be:
The hydraulic steel pipe connector production equipment, it comprises:
One workbench, it is provided with a frock, and said frock is used for positioning steel tube;
One hydraulic system, it is located on the workbench, and has a hydraulic stem;
One mould, it is secured to hydraulic stem, and the die face of said mould is towards frock; And
One heating generator, it is used for the tip side of high-frequency heating steel pipe;
Wherein: the tip side of said heating generator heating steel pipe is so that tip side receives thermal softening, and the hydraulic stem of said hydraulic system can drive mould and move towards the tip side direction, is directly formed to the thick embryo of joint so that said tip side is squeezed.
Among one preferred embodiment: said heating generator is slidingly arranged in workbench.
The present technique scheme is compared with background technology; Direct extrusion modling of high-frequency heating and hydraulic steel pipe operating characteristic are combined effectively; It has following advantage: be the part of former steel pipe owing to extruding the coupling that forms 1; So integrated molding, no weld seam avoids occurring existing deficiency in the background technology; 2, the steel pipe sealing performance is better, and compression strength is higher; 3, in the high-frequency heating process,, also realize selective hardening synchronously, improved the integral hardness of end greatly except that tip side is heated the deliquescing distortion; 4, steel pipe and pipe joint are integral structure; Improved steel pipe integral service life, reach high decontamination index; Improve the product quality of environment purification, make this product can be widely used in the hydraulic system of engineering goods such as earthmoving machinery, mining machinery, engineering machinery; 5, non-environmental-pollution, the handling safety performance is high; 6, adopt this production technology to reduce cost, reduce machining processes, removed welding procedure from, can reduce the consumption of material effectively, reduced the investment and production cost, enhance productivity; 7, employing is fixed on workbench with steel pipe, and the mode that moves moulds realizes extruding, and is easy to operate, easy to control; 8, the temperature of high-frequency heating is 700 ℃-800 ℃, and the time is 3 seconds-300 seconds, not only can make the tip side temperature distortion, but also can realize selective hardening; 9, adopt hydraulic pressure to drive mould extruding coupling end and make it be directly formed to the thick embryo of joint, easy to operate, easy to control; 10, the extruding dwell time is generally 10sec～120sec, and Forming Quality is good.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 has illustrated the flow chart of hydraulic steel pipe connector extrusion process.
Fig. 2 has illustrated the sketch map of hydraulic steel pipe connector.
Fig. 3 has illustrated the sketch map of hydraulic steel pipe connector production equipment.
Fig. 4 has illustrated the sketch map of hydraulic steel pipe connector one mould.
Fig. 5 has illustrated the sketch map of another mould of hydraulic steel pipe connector.
The specific embodiment
Please refer to Fig. 2, hydraulic steel pipe connector, it comprises a steel pipe 10, the tip side of said steel pipe 10 is squeezed by the high-frequency heating deliquescing again and is shaped to joint 20.
Please refer to Fig. 3, Fig. 4 and Fig. 5, the hydraulic steel pipe connector production equipment, it comprises a workbench 30, a hydraulic system 40, a mould 50 and a heating generator 60.Be provided with a frock 31 on the said workbench 30, said frock 31 is used for positioning steel tube 10 as anchor clamps, and the tip side of the said steel pipe in back, location is positioned at outside the frock 31.Said hydraulic system 40 is installed on the workbench 30, and said hydraulic system 40 has the hydraulic stem 41 that can slide, and said hydraulic stem 41 slides between home position and operating position.Said mould 50 has a die face 51 and a forming cavity 52, and the opening of said forming cavity 52 is positioned on the die face 51, and said die face 51 is towards frock 31.Said heating generator 60 can be independent of workbench 30, also slidably is secured to workbench 30.Among the present embodiment, said mould 50 has a die face 51, is arranged with the forming cavity 52 that forms an annular on the said die face 51; Said forming cavity 52 surrounds central part 53; The endoporus of said central part 53 adaptive steel pipes 10, and preferably central part 53 also stretches out so that central part 53 terminal surfaces stretch out die face 51; Said central part 53 is mainly used in the endoporus that guarantees steel pipe 10; Be used for positioning steel tube 10, be used to guarantee the stability of steel pipe 10 location, prolongation is that axial length can dwindle when being joint because of the extrusion modling of coupling end.The mould that note that the accompanying drawing 4,5 among the present embodiment is not the mould of the joint of corresponding diagram 2.
Please refer to 1, the hydraulic steel pipe connector extrusion process, it comprises:
Step 1 is used to prepare original steel pipe, and said original steel pipe axial length is greater than the hydraulic steel pipe axial length, and the part of said length difference is mainly used in the moulding joint, and said length difference can be 5mm～100mm;
Step 21 is used to adopt heating generator 60 to heat the tip side of steel pipes 10, the deliquescing so that tip side is heated;
Step 22 is used for steel pipe 10 is fixed on the frock 31 of workbench 30;
Step 3; Being used to operate hydraulic system 40 makes hydraulic stem 41 move to the operating position from the home position; Move towards steel pipe 10 directions to drive mould 50; So that the forming cavity 52 of mould 50 can socket and pushed the tip side of steel pipe 10,, the tip side of steel pipe 10 is directly formed to the thick embryo of joint so that being squeezed; Best, hydraulic stem 41 can keep a period of time in the operating position, so that forming cavity 52 can pressurize a period of time, the extruding dwell time is generally 10sec～120sec;
Step 4 is used for the thick embryo of machined joint, to become joint 20.
The temperature of said high-frequency heating is 700 ℃-800 ℃.The time of said high-frequency heating is confirmed according to the trade mark of material and required hardness, can be 3 seconds-300 seconds.
Below in conjunction with diameter be 38mm, length be 700mm, pipe joint length be 13mm, joint external diameter for the 50mm material be that the hydraulic steel pipe connector production process of 20# steel is done further elaboration to the present invention.
Step 1, according to the dimensional requirement of product, the selection diameter is that the steel pipe of 38mm is processed, and cutoff length is 810mm, and wherein machined length requires 2mm for being not less than 2mm according to the moulding surplus;
Step 21, according to joint dimension, selecting internal diameter for use is the high frequency coil of 60mm, and loop length is 40mm, and each interlayer of coil is divided into 10mm; Performance setting heating-up temperature according to material is 750 ℃, and be 60-80 second heat time heating time;
Step 22 is used for steel pipe is fixed on workbench;
Step 32, the hydraulic stem of hydraulic system drives mould and moves towards the steel pipe direction, so that steel pipe gets within the forming cavity of mould, and makes forming cavity exert pressure to steel pipe through hydraulic system, pressure is 160N, the dwell time is 30sec; At this moment, the tip side of steel pipe is squeezed and is directly formed to the thick embryo of joint;
Step 33, pressurize can be taken out steel pipe after finishing;
Step 4, the steel pipe that extruding is good are selected correspondingly at machining apparatus it to be processed by drawing, to become joint.
Among the present embodiment, said step 22 and step 31 are interchangeable, can implement simultaneously, in a word as long as step 31 is before step 32.
The above is merely preferred embodiment of the present invention, so can not limit the scope that the present invention implements according to this, the equivalence of promptly doing according to claim of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (5)
1. hydraulic steel pipe connector extrusion process, it is characterized in that: it comprises:
Step 1 is used to prepare steel pipe;
Step 2 is used to adopt the tip side of high-frequency heating steel pipe, the deliquescing so that tip side is heated, and wherein, the temperature of said high-frequency heating is 700 ℃-800 ℃, the time of said high-frequency heating is 3 seconds-300 seconds;
Step 3 is used for extruding, is directly formed to the thick embryo of joint so that the tip side of steel pipe is squeezed;
Step 4 is used for the thick embryo of machined joint, to become joint.
2. hydraulic steel pipe connector extrusion process according to claim 1 is characterized in that: the said extruding dwell time is generally 10sec～120sec.
3. hydraulic steel pipe connector extrusion process according to claim 1 is characterized in that: said step 2 comprises:
Step 21 is used to adopt the tip side of high-frequency heating steel pipe, the deliquescing so that tip side is heated;
Step 22 is used for the tip side of steel pipe is put within the corresponding mould of joint.
4. hydraulic steel pipe connector extrusion process according to claim 1 is characterized in that: said step 2 comprises:
Step 21 is used for the tip side of steel pipe is put within the corresponding mould of joint;
Step 22 is used to adopt the tip side of high-frequency heating steel pipe, the deliquescing so that tip side is heated.
5. hydraulic steel pipe connector extrusion process according to claim 1 is characterized in that:
Said step 2 comprises:
Step 21 is used to adopt the tip side of high-frequency heating steel pipe, the deliquescing so that tip side is heated;
Step 22 is used for steel pipe is fixed on workbench;
Said step 3 is used to make mould to move towards the steel pipe direction, so that mould socket and push the tip side of steel pipe is directly formed to the thick embryo of joint so that the tip side of steel pipe is squeezed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103013927A CN101869928B (en) | 2010-02-08 | 2010-02-08 | Hydraulic steel pipe connector and extrusion forming method and production device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103013927A CN101869928B (en) | 2010-02-08 | 2010-02-08 | Hydraulic steel pipe connector and extrusion forming method and production device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101869928A CN101869928A (en) | 2010-10-27 |
| CN101869928B true CN101869928B (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010103013927A Expired - Fee Related CN101869928B (en) | 2010-02-08 | 2010-02-08 | Hydraulic steel pipe connector and extrusion forming method and production device thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397434A (en) * | 2015-12-30 | 2016-03-16 | 双威液压工业（芜湖）有限公司 | Machining process of hydraulic system pipe joint sleeve |
| CN111842536A (en) * | 2020-07-01 | 2020-10-30 | 北京航天新立科技有限公司 | Special-shaped pipeline forming process and forming system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2714929Y (en) * | 2004-08-18 | 2005-08-03 | 王瑞恭 | Joint structure with even internal flow |
| CN101049615A (en) * | 2006-04-05 | 2007-10-10 | 卢清华 | Hot extrusion collection molding technique for pipe end of high-pressure straight pipe in fracturing complete sets of equipment in oil-gas field |
| CN101301671A (en) * | 2008-07-08 | 2008-11-12 | 哈尔滨飞机工业集团有限责任公司 | Pipe end moulding method |
| CN101314174A (en) * | 2007-06-02 | 2008-12-03 | 付朋 | Intermediate frequency induction heating pipe-expanding machine |
-
2010
- 2010-02-08 CN CN2010103013927A patent/CN101869928B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2714929Y (en) * | 2004-08-18 | 2005-08-03 | 王瑞恭 | Joint structure with even internal flow |
| CN101049615A (en) * | 2006-04-05 | 2007-10-10 | 卢清华 | Hot extrusion collection molding technique for pipe end of high-pressure straight pipe in fracturing complete sets of equipment in oil-gas field |
| CN101314174A (en) * | 2007-06-02 | 2008-12-03 | 付朋 | Intermediate frequency induction heating pipe-expanding machine |
| CN101301671A (en) * | 2008-07-08 | 2008-11-12 | 哈尔滨飞机工业集团有限责任公司 | Pipe end moulding method |
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| CN101869928A (en) | 2010-10-27 |
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