CN2887485Y - Hydraulic pressure two-step propulsion diameter-enlargement, necking and fixing machine - Google Patents
Hydraulic pressure two-step propulsion diameter-enlargement, necking and fixing machine Download PDFInfo
- Publication number
- CN2887485Y CN2887485Y CN 200620080044 CN200620080044U CN2887485Y CN 2887485 Y CN2887485 Y CN 2887485Y CN 200620080044 CN200620080044 CN 200620080044 CN 200620080044 U CN200620080044 U CN 200620080044U CN 2887485 Y CN2887485 Y CN 2887485Y
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- welded tube
- push pedal
- longitudinally welded
- fixed
- board
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Abstract
The utility model provides a hydraulic two-steps propulsion expanding and compressing diameter sizing machine for seamless process of welded tube, which belongs to a processing device for longitudinally welded tube. The utility model includes the parts which are arranged sequentially from back to front on the machine base as follows: a cylinder supporting frame, a cylinder supporting board, a back pushing board, a front pushing board and a supporting board. The hydraulic cylinder is fixed on the cylinder supporting frame and the cylinder supporting board. The back pushing board is fixed on the outside end of the piston of the hydraulic cylinder. The frontmost part of the machine base is arranged with the front supporting board, the compressing diameter sizing mold is fixed on the front supporting board, on the back part of the front supporting board is equipped with the medium frequency induction coil. During the post-processing of the longitudinally welded tube, the longitudinally welded tube can be hot-expanded by the available hydraulic two-steps propulsion tube forming machine, and then the longitudinally welded tube can be compressing-sized by the compressing diameter sizing machine under the conditions of being heated. After being uniformly medium frequency heated twice, the metallurgical structure of the completely longitudinally welded tube becomes uniform, which improves the performance of the longitudinally welded tube and makes the longitudinally welded tube attain or get close to the mechanical properties of the seamless steel tube.
Description
Technical field
The utility model provides a kind of steel pipe treating apparatus, especially a kind of ERW after-treatment device.
Background technology
Existing steel pipe apparatus for producing tube generally adopts leading screw to drive push pedal and promotes processed steel pipe and move forward, thereby or adopting hydraulic jack to promote push pedal promotes processed steel pipe and moves forward, the manufacturing of steel pipe is to rely on the disposable promotion of hydraulic jack to finish.Can cause the required length of the cylinder body of hydraulic jack and plunger big like this, rigidity requires high, the straightening difficulty, and processed complex, so manufacturing cost is very high.The applicant once developed the hydraulic pressure two steps propelling tuber that obtains Chinese patent (patent No. is ZL98221393.X), it is to utilize the secondary of hydraulic jack to promote to realize moving of processed steel pipe, this has just shortened the length of hydraulic jack cylinder body and plunger greatly, reduced its rigidity requirement, processing and manufacturing is easy, low cost of manufacture.But this tuber is mainly used in the hole enlargement of steel pipe, the multiple new processing of waste and old oil passageway etc.And ERW is compared with seamless steel pipe, though easy to manufacture, production cost is low, and mechanical performance is relatively poor, thereby has limited its range of application.At present, also do not have a kind ofly suitable ERW to be carried out post processing, with the equipment of effective its mechanical performance of raising.
Summary of the invention
Technical problem to be solved in the utility model is, provides advance scalable footpath sizing mill a kind of two steps of welded tube seamless process hydraulic pressure, and it can be used for the post processing of ERW, with its mechanical performance of effective raising.
The utility model is to realize like this, two steps of welded tube seamless process hydraulic pressure advance scalable footpath sizing mill, comprise cylinder bracket, oil cylinder support plate, back push pedal, preceding push pedal, the support plate on support, arranged successively from back to front, hydraulic jack is fixed on cylinder bracket and the oil cylinder support plate, back push pedal is fixed on the outer end of the plunger on the hydraulic jack, push rod one end is fixed in the push pedal of back, the other end is fixed in the preceding push pedal, forefront at described support has front supporting plate, undergauge sizing mould is installed on the front supporting plate, and there is the Medium frequency induction coil front supporting plate back.
When ERW is carried out post processing, can utilize two steps of original hydraulic pressure to advance tuber that ERW is carried out thermal expansion earlier, utilize advance scalable footpath sizing mill two steps of welded tube seamless process hydraulic pressure of said structure then,, under heating condition, carry out the undergauge sizing the ERW behind the thermal expansion.Because ERW is when carrying out the processing of thermal expansion and pyrocondensation footpath sizing, evenly heat through twice intermediate frequency, make the metallurgical structure of the whole ERW uniformity that becomes, improved the performance of ERW, it is reached or near the mechanical performance of seamless steel pipe, thereby enlarged the range of application of ERW.ERW after handling like this, production cost is significantly less than seamless steel pipe.
Description of drawings
Fig. 1 is the front view of the utility model structure.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the A-A profile of Fig. 1.
Fig. 4 is that the B of Fig. 1 is to partial view.
Fig. 5 is the cross-sectional schematic that undergauge sizing mould and exterior sheathing are installed relation.
The specific embodiment
The embodiment that provides below in conjunction with accompanying drawing illustrates concrete structure of the present utility model and operation principle.
As shown in drawings, two steps of welded tube seamless process hydraulic pressure of the utility model advance scalable footpath sizing mill, comprise from back to front and go up the cylinder bracket of arranging (1) at support (2) successively, oil cylinder support plate (4), back push pedal (6), preceding push pedal (10), support plate (12), hydraulic jack (3) is fixed on cylinder bracket (1) and the oil cylinder support plate (4), back push pedal (6) is fixed on the outer end of the plunger (5) on the hydraulic jack (3), push rod (7) one ends are fixed in the back push pedal (6), the other end is fixed in the preceding push pedal (10), forefront at described support (2) has front supporting plate (14), undergauge sizing mould (18) is installed on the front supporting plate, and there is Medium frequency induction coil (13) the front supporting plate back.
As Fig. 4, shown in Figure 5, undergauge sizing mould (18) is installed on the front supporting plate (14) by exterior sheathing (17).The inward flange of undergauge sizing mould (i.e. the position that contacts with ERW) can have carbide alloy.
Advance tuber the same with original two steps of hydraulic pressure, the both sides of oil cylinder support plate (4) and front supporting plate (14) are separately installed with guiding slide bar (11), and back push pedal (6) and preceding push pedal (10) difference activity cross-under are on the guiding slide bar.The guiding slide bar also plays the security insurance effect.Two guide rails (8) are arranged on the support (2), below push pedal and the preceding push pedal of back, the roller (9) that contacts with guide rail (8) is arranged respectively.Toll bar (15) is movably arranged on respectively on the centre position of back push pedal and preceding push pedal.
The course of action of this undergauge sizing mill and two steps of original hydraulic pressure advance tuber basic identical.During use, open the toll bar in back push pedal and the preceding push pedal, make processed ERW pass back push pedal and preceding push pedal from the rear end, fall on the roller bearing (16) of preceding push pedal.The toll bar of closing in the push pedal of back makes it to block processed ERW rear end, starts hydraulic jack, and plunger promotes the back push pedal and moves forward, and also moves forward thereby make the back push pedal promote ERW.One section of ERW is passed through Frequency Induction Heating coil and undergauge sizing mould successively, after by the Medium frequency induction coil heats, dwindles its diameter and while sizing by undergauge sizing mould.When after after push pedal shifts the position onto, the toll bar in the push pedal of back is decontroled, back push pedal and preceding push pedal while retreat under the drive of plunger and put in place.Toll bar before closing in the push pedal, the rear end of just in time blocking ERW is when plunger promotes forward once more, can drive ERW carries out the second time forward and moves, another section of ERW is by Frequency Induction Heating coil and undergauge sizing mould, and after heating, diameter reduction is the while sizing also.
Before using this undergauge sizing mill that ERW is handled, should use two steps of original hydraulic pressure to advance tuber that ERW is carried out thermal expansion earlier, expand the back diameter greater than 1～5 millimeter of the required diameter of reality.During the undergauge sizing, again this 1～5 millimeter is contracted.When carrying out handling for this twice, the heating-up temperature of Medium frequency induction coil is about 800 ℃.The structure of Medium frequency induction coil and operation principle and original two steps of hydraulic pressure advance identical on the tuber, no longer describe in detail.
Claims (1)
1, two steps of welded tube seamless process hydraulic pressure advance scalable footpath sizing mill, comprise from back to front and go up the cylinder bracket of arranging (1) at support (2) successively, oil cylinder support plate (4), back push pedal (6), preceding push pedal (10), support plate (12), hydraulic jack (3) is fixed on cylinder bracket (1) and the oil cylinder support plate (4), back push pedal (6) is fixed on the outer end of the plunger (5) on the hydraulic jack (3), push rod (7) one ends are fixed in the back push pedal (6), the other end is fixed in the preceding push pedal (10), it is characterized in that, forefront at described support (2) has front supporting plate (14), undergauge sizing mould (18) is installed on the front supporting plate, and there is Medium frequency induction coil (13) the front supporting plate back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080044 CN2887485Y (en) | 2006-01-08 | 2006-01-08 | Hydraulic pressure two-step propulsion diameter-enlargement, necking and fixing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080044 CN2887485Y (en) | 2006-01-08 | 2006-01-08 | Hydraulic pressure two-step propulsion diameter-enlargement, necking and fixing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2887485Y true CN2887485Y (en) | 2007-04-11 |
Family
ID=38046059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620080044 Expired - Fee Related CN2887485Y (en) | 2006-01-08 | 2006-01-08 | Hydraulic pressure two-step propulsion diameter-enlargement, necking and fixing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2887485Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885007A (en) * | 2010-05-30 | 2010-11-17 | 魏传元 | Anchor rod diameter changing machine |
| CN106914554A (en) * | 2017-04-03 | 2017-07-04 | 浙江卓业能源装备有限公司 | The step of heavy caliber seamless steel pipe two push type thermal expansion machine and its thermal expansion process |
-
2006
- 2006-01-08 CN CN 200620080044 patent/CN2887485Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885007A (en) * | 2010-05-30 | 2010-11-17 | 魏传元 | Anchor rod diameter changing machine |
| CN106914554A (en) * | 2017-04-03 | 2017-07-04 | 浙江卓业能源装备有限公司 | The step of heavy caliber seamless steel pipe two push type thermal expansion machine and its thermal expansion process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070411 Termination date: 20100208 |