CN113617866A - Special-shaped steel pipe manufacturing die - Google Patents

Special-shaped steel pipe manufacturing die Download PDF

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Publication number
CN113617866A
CN113617866A CN202111032963.6A CN202111032963A CN113617866A CN 113617866 A CN113617866 A CN 113617866A CN 202111032963 A CN202111032963 A CN 202111032963A CN 113617866 A CN113617866 A CN 113617866A
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CN
China
Prior art keywords
steel pipe
special
shaped steel
frame
fixedly connected
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Granted
Application number
CN202111032963.6A
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Chinese (zh)
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CN113617866B (en
Inventor
吴海录
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU XINGYANG PIPE FITTINGS CO Ltd
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Individual
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Publication of CN113617866A publication Critical patent/CN113617866A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00Profiling tools for metal drawing; Combinations of dies and mandrels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C9/00Cooling, heating or lubricating drawing material
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention discloses a special-shaped steel pipe manufacturing die which comprises an installation frame, wherein a cavity is formed in the inner wall of the installation frame, a abdicating groove is formed in one side of the cavity, and a brush is fixedly connected in the abdicating groove; external mold subassembly, the external mold subassembly includes the frame, the frame rotates with the installing frame to be connected the setting, the bar groove that the symmetry set up is seted up to the lateral wall of shell, in this kind of heterotypic steel pipe manufacturing die, through setting up installing frame cooperation cavity and brush, can go out at the feed inlet of mould, utilize the brush to go up lubricating oil at the table brush of treating the shaping steel pipe, thereby reduce the frictional force of steel pipe and shaping die block, reduce the wearing and tearing of this kind of shaping die block and the generating heat of mould, through setting up external mold subassembly cooperation centre form subassembly, divide into general outer module and removable interior module with this kind of heterotypic steel pipe manufacturing die, thereby reduce the cost of changing the mould, especially the adaptation is in the less heterotypic steel pipe of production batch.

Description

Special-shaped steel pipe manufacturing die
Technical Field
The invention relates to the field of oil tank cleanliness detection equipment, in particular to a special-shaped steel pipe manufacturing die.
Background
The special-shaped steel pipe is a long steel bar with a hollow section, and is widely applied to structural parts such as automobiles, trains, airplanes, ships, space launchers and the like, mechanical parts, petrochemical engineering, geological drilling, textile machinery, radio communication, medical treatment and health, military industry and other fields. The annular part is manufactured by adopting the special-shaped steel pipe, so that the material utilization rate can be improved, the manufacturing process is simplified, and the materials and the processing time are saved.
In the prior art, the processing of abnormal shape steel pipe often needs the cold drawing mould of customization specialty to process, abnormal shape steel pipe often demand is less, and mould cost is higher, this also makes the manufacturing cost of abnormal shape steel pipe higher, and it is comparatively serious to the inner wall wearing and tearing of mould in cold drawing processing man-hour, in case damage, often need make the mould again, on the other hand, wearing and tearing still can lead to the temperature rise of mould, the damage of mould has further been accelerated, and can lead to the precision of steel tube processing to descend because the expend with heat and contract with cold of mould, we provide a abnormal shape steel pipe and make the mould and solve above-mentioned problem.
Disclosure of Invention
The invention aims to provide a special-shaped steel pipe manufacturing die to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a special-shaped steel pipe manufacturing mold comprises:
the inner wall of the mounting frame is provided with a cavity, one side of the cavity is provided with a abdicating groove, and a brush is fixedly connected in the abdicating groove;
the outer die assembly comprises an outer frame, the outer frame is rotatably connected with the mounting frame, the side wall of the shell is provided with symmetrically-arranged strip-shaped grooves, the inner walls of the strip-shaped grooves are provided with a plurality of threaded holes, threaded rods are connected in the threaded holes, the inner walls of the outer frame are slidably connected with a plurality of limiting plates, the upper ends of the limiting plates are rotatably connected with the threaded rods, and one ends, close to each other, of the limiting plates are provided with T-shaped grooves;
centre form subassembly, the centre form subassembly includes a plurality of profile modeling cushion, every the fixture block that equal fixedly connected with and T shape match on the profile modeling cushion is a plurality of the shaping die block has been placed between the profile modeling cushion, open the through-hole in the profile modeling cushion, and the equal fixed connection adapter in both ends of through-hole, the lateral wall fixedly connected with cooling tank of frame, be provided with the oil pump in the cooling tank, the oil pump passes through the pipeline and sets up with one of them adapter intercommunication, and is a plurality of the adapter passes through the hose intercommunication setting, and one of them adapter intercommunication has the back flow, the back flow sets up with cooling tank intercommunication.
In a further embodiment, the lateral wall fixedly connected with spacing strip that the installing frame was kept away from to the limiting plate, and the gasket has been placed to the lateral wall of limiting plate.
In a further embodiment, the surface of the limiting plate close to the T-shaped groove is provided with a blind hole, and both ends of the threaded rod are provided with hexagonal grooves.
In a further embodiment, the forming bottom die comprises a guide section, a pre-forming section and a forming section, and the guide section is in a cone frustum shape.
In a further embodiment, the adapter includes the pipe, pipe and profile modeling cushion fixed connection set up, the lateral wall threaded connection of pipe has the thread bush, and the one end fixedly connected with toper cover that the pipe was kept away from to the thread bush, the one end that the profile modeling cushion was kept away from to the pipe is provided with the toper pipe.
In a further embodiment, the upper end of the mounting frame is provided with an oil storage tank, the oil storage tank is communicated with the cavity, the upper surface of the oil storage tank is provided with an air hole, and transparent glass is embedded in the side wall of the oil storage tank.
In a further embodiment, the forming bottom die is made of hard alloy, and the profiling cushion block is made of carbon steel or cast steel.
In a further embodiment, one end, far away from the clamping block, of the profiling cushion block is provided with a limiting groove, and the outer wall of the forming bottom die is provided with an edge strip matched with the limiting groove.
Compared with the prior art, the invention has the beneficial effects that:
1. in this kind of abnormal shape steel pipe manufacturing mould, through setting up installing frame cooperation cavity and brush, can go out at the feed inlet of mould, utilize the brush to go up lubricating oil at the table brush of waiting to form the steel pipe to reduce the frictional force of steel pipe and shaping die block, reduce the wearing and tearing of this kind of shaping die block and the generating heat of mould, through setting up outer mold component cooperation centre form subassembly, divide into general outer module and removable interior module with this kind of abnormal shape steel pipe manufacturing mould, thereby reduce the cost of changing the mould, especially adapt to the less abnormal shape steel pipe in production batch.
2. In this kind of abnormal shape steel pipe manufacturing mould, through setting up cooling oil tank cooperation oil pump, drive cooling oil is at pipeline and the circulation flow of profile modeling cushion to reduce the temperature of profile modeling cushion and shaping die block, avoid the temperature rise of mould to accelerate the wearing and tearing of mould, and the expend with heat and contract with cold of mould leads to the precision decline of steel pipe processing.
Drawings
FIG. 1 is a schematic side view of a mold for manufacturing a shaped steel pipe.
FIG. 2 is a schematic sectional view of a mounting frame in a die for manufacturing a special-shaped steel pipe.
FIG. 3 is a schematic sectional view of a mold for manufacturing a steel pipe with a special shape.
FIG. 4 is a schematic side sectional view of the mold for manufacturing the deformed steel pipe.
FIG. 5 is a schematic diagram of a limiting plate structure in a die for manufacturing a special-shaped steel pipe.
FIG. 6 is a schematic cross-sectional view of a limiting plate in a die for manufacturing a special-shaped steel pipe.
Fig. 7 is a schematic cross-sectional structure view of an adapter in a special-shaped steel pipe manufacturing die.
In the figure: 1. installing a frame; 2. a cavity; 3. a yielding groove; 4. a brush; 5. an outer frame; 6. a strip-shaped groove; 7. a threaded rod; 8. a limiting plate; 9. profiling cushion blocks; 10. a clamping block; 11. forming a bottom die; 12. a through hole; 13. an adapter; 14. cooling the oil tank; 15. an oil pump; 16. a return pipe; 17. a limiting strip; 18. A gasket; 19. blind holes; 20. a groove; 131. a circular tube; 132. a threaded sleeve; 133. a tapered tube; 21. An oil storage tank; 22. air holes; 23. transparent glass; 24. a limiting groove; 25. and (7) edging.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-7, in the embodiment of the invention, a special-shaped steel pipe manufacturing mold is provided, which includes an installation frame 1, wherein a cavity 2 is formed in an inner wall of the installation frame 1, an abdicating groove 3 is formed in one side of the cavity 2, and a brush 4 is fixedly connected in the abdicating groove 3;
the outer die assembly comprises an outer frame 5, the outer frame 5 is rotatably connected with the mounting frame 1, the side wall of the shell is provided with symmetrically-arranged strip-shaped grooves 6, the inner walls of the strip-shaped grooves 6 are provided with a plurality of threaded holes, threaded rods 7 are connected with the threaded holes in internal threads, the inner wall of the outer frame 5 is slidably connected with a plurality of limiting plates 8, the upper ends of the limiting plates 8 are rotatably connected with the threaded rods 7, and one ends, close to each other, of the limiting plates 8 are provided with T-shaped grooves;
centre form subassembly, the centre form subassembly includes a plurality of profile modeling cushion blocks 9, every the fixture block 10 that equal fixedly connected with and T shape match on the profile modeling cushion block 9, it is a plurality of shaping die block 11 has been placed between the profile modeling cushion block 9, open through-hole 12 in the profile modeling cushion block 9, and the equal fixed connection adapter 13 in both ends of through-hole 12, the lateral wall fixedly connected with cooling tank 14 of frame 5, be provided with oil pump 15 in the cooling tank 14, oil pump 15 sets up through pipeline and 13 intercommunication of one of them adapter, and is a plurality of adapter 13 passes through the hose intercommunication setting, and one of them adapter 13 intercommunication has back flow 16, back flow 16 and the setting of cooling tank 14 intercommunication.
Spacing strip 17 of lateral wall fixedly connected with that the installing frame 1 was kept away from to limiting plate 8, and placed gasket 18 between limiting plate 8 and the shaping die block 11, through setting up spacing strip 17 for the position of restriction gasket 18 utilizes gasket 18 to fill the clearance between limiting plate 8 and the shaping die block 11, avoids shaping die block 11 to take place deformation when adding man-hour to the steel pipe.
The surface that limiting plate 8 is close to the T-shaped groove has seted up blind hole 19, hexagonal recess 20 has all been seted up at the both ends of threaded rod 7, and this kind of design makes the user dismantle threaded rod 7 by the both ends of threaded rod 7 all can use hexagon socket wrench, avoids the recess 20 of threaded rod 7 one end to damage, and the user can' T take off threaded rod 7.
The shaping die block 11 includes direction section, preforming section and shaping section, the direction section is the circular cone frustum shape, is comparatively complicated to the shape, perhaps when the thin steel pipe of wall thickness carries out the cold drawing, processes the steel pipe through the shaping die block 11 of multistage formula, can be progressive make the steel pipe deformation, avoids disposable deformation volume too big steel pipe damage that leads to.
Adapter 13 includes pipe 131, pipe 131 and the setting of profile modeling cushion 9 fixed connection, the lateral wall threaded connection of pipe 131 has thread bush 132, and thread bush 132 keeps away from the one end fixedly connected with toper cover of pipe 131, the one end that profile modeling cushion 9 was kept away from to pipe 131 is provided with toper pipe 133, and this kind of design uses the pipeline cover on toper pipe 133, then twists thread bush 132 and presss from both sides tight rubber conduit, can realize cooling oil tank 14 and the intercommunication of profile modeling cushion 9 to cool off profile modeling cushion 9 in the course of working.
The upper end of installing frame 1 is provided with oil storage tank 21, and oil storage tank 21 and the 2 intercommunication settings in cavity, air pocket 22 has been seted up to the upper surface of oil storage tank 21, and the lateral wall of oil storage tank 21 inlays and is equipped with clear glass 23, through setting up oil storage tank 21, can hold more lubricating oil, through air pocket 22, avoid atmospheric pressure to lead to unable downflow in the oil storage tank 21, through setting up clear glass 23, can be convenient for the user observe the liquid level of lubricating oil in the oil storage tank 21 to when the lubricating oil liquid level is lower, in time add.
The forming bottom die 11 is made of hard alloy, and the profiling cushion block 9 is made of carbon steel or cast steel.
The one end that fixture block 10 was kept away from to profile modeling cushion 9 is provided with spacing groove 24, the outer wall of shaping die block 11 is provided with the strake 25 that matches with spacing groove 24, through setting up spacing groove 24 cooperation strake 25 for when making the formula of twisting cold drawn pipe, carry out further spacing to shaping die block 11, avoid the skew to take place for the position of shaping die block 11, guarantee the shaping effect of special-shaped steel pipe.
The working principle of the invention is as follows: when the special-shaped steel pipe manufacturing mold is used, a user can manufacture corresponding profiling cushion blocks 9 and a forming bottom mold 11 according to a special-shaped steel pipe drawing to be produced, then a fixture block 10 is welded on the profiling cushion blocks 9, then a hexagon socket wrench is used for rotating a threaded rod 7 so as to adjust the positions of a plurality of limiting plates 8, then the profiling cushion blocks 9 are installed on the limiting plates 8 by matching the fixture block 10 with a T-shaped groove, then the forming bottom mold 11 is placed between the profiling cushion blocks 9, gaskets 18 are placed on two sides of the forming bottom mold 11 to fill a gap between the forming bottom mold 11 and the limiting plates 8, then the threaded rod 7 is rotated again, so that the profiling cushion blocks 9 further press the forming bottom mold 11 and apply a certain prestress, on one hand, the fixing effect of the profiling cushion blocks 9 on the forming bottom mold 11 can be improved, and simultaneously the forming bottom mold 11 is prevented from being deformed during processing, the purpose of ensuring the forming size of the special-shaped steel pipe is achieved, then the mounting frame 1 is placed on cold-drawing equipment, the outer frame 5 is fixed by using a die seat of the cold-drawing equipment, and then the production of the special-shaped steel pipe can be carried out;
when a special-shaped steel pipe is processed, the steel pipe raw material is inserted into the inner mold assembly from the direction of the mounting frame 1, the brush 4 is abutted against the steel pipe raw material, and when the steel pipe moves, lubricating oil is smeared on the outer wall of the steel pipe, so that the friction force between the steel pipe and the forming bottom mold 11 is reduced, the abrasion and the temperature rise of the forming bottom mold 11 are reduced, the purpose of protecting the forming bottom mold 11 and reducing the production energy consumption is achieved, manual smearing is not needed, the operation is convenient, when a user processes, the oil pump 15 is started, the oil pump 15 drives cooling oil to enter the profiling cushion block 9 from the cooling oil tank 14 and flow back into the cooling oil tank 14 through the return pipe 16, the profiling cushion block 9 and the forming bottom mold 11 are cooled while the special-shaped steel pipe is formed, the abrasion acceleration of the forming bottom mold 11 and the deformation caused by thermal expansion and cold contraction due to the temperature rise of the inner mold assembly are avoided, along with the production of the special-shaped steel pipe, once the forming bottom die 11 is damaged, only a new forming bottom die 11 needs to be manufactured, and when special-shaped steel pipes in other shapes need to be produced, only the corresponding forming bottom die 11 and the corresponding profiling cushion block 9 need to be manufactured.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. The utility model provides a heterotypic steel pipe manufacturing mould which characterized in that includes:
the inner wall of the mounting frame is provided with a cavity, one side of the cavity is provided with a abdicating groove, and a brush is fixedly connected in the abdicating groove;
the outer die assembly comprises an outer frame, the outer frame is rotatably connected with the mounting frame, the side wall of the shell is provided with symmetrically-arranged strip-shaped grooves, the inner walls of the strip-shaped grooves are provided with a plurality of threaded holes, threaded rods are connected in the threaded holes, the inner walls of the outer frame are slidably connected with a plurality of limiting plates, the upper ends of the limiting plates are rotatably connected with the threaded rods, and one ends, close to each other, of the limiting plates are provided with T-shaped grooves;
centre form subassembly, the centre form subassembly includes a plurality of profile modeling cushion, every the fixture block that equal fixedly connected with and T shape match on the profile modeling cushion is a plurality of the shaping die block has been placed between the profile modeling cushion, open the through-hole in the profile modeling cushion, and the equal fixed connection adapter in both ends of through-hole, the lateral wall fixedly connected with cooling tank of frame, be provided with the oil pump in the cooling tank, the oil pump passes through the pipeline and sets up with one of them adapter intercommunication, and is a plurality of the adapter passes through the hose intercommunication setting, and one of them adapter intercommunication has the back flow, the back flow sets up with cooling tank intercommunication.
2. The special-shaped steel pipe manufacturing mold according to claim 1, wherein the side wall of the limiting plate, which is far away from the mounting frame, is fixedly connected with a limiting strip, and a gasket is placed on the side wall of the limiting plate.
3. The special-shaped steel pipe manufacturing mold according to claim 1, wherein the surface of the limiting plate, which is close to the T-shaped groove, is provided with a blind hole, and both ends of the threaded rod are provided with hexagonal grooves.
4. The special-shaped steel pipe manufacturing mold according to claim 1, wherein the forming bottom mold comprises a guide section, a pre-forming section and a forming section, and the guide section is in a cone frustum shape.
5. The special-shaped steel pipe manufacturing mold according to claim 1, wherein the adapter comprises a round pipe, the round pipe is fixedly connected with the profiling cushion block, a thread sleeve is connected to the side wall of the round pipe in a threaded manner, a conical sleeve is fixedly connected to one end, away from the round pipe, of the thread sleeve, and a conical pipe is arranged at one end, away from the profiling cushion block, of the round pipe.
6. The special-shaped steel tube manufacturing mold according to claim 1, wherein an oil storage tank is arranged at the upper end of the mounting frame and is communicated with the cavity, an air hole is formed in the upper surface of the oil storage tank, and transparent glass is embedded in the side wall of the oil storage tank.
7. The mold for manufacturing a special-shaped steel pipe according to claim 1, wherein the forming bottom mold is made of hard alloy, and the profiling cushion block is made of carbon steel or cast steel.
8. The special-shaped steel pipe manufacturing mold according to claim 1, wherein a limiting groove is formed in one end, away from the clamping block, of the profiling cushion block, and edge strips matched with the limiting groove are arranged on the outer wall of the forming bottom mold.
CN202111032963.6A 2021-09-03 2021-09-03 Special-shaped steel pipe manufacturing die Active CN113617866B (en)

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CN113617866B CN113617866B (en) 2023-10-31

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Publication number Priority date Publication date Assignee Title
JP2000288622A (en) * 1999-03-31 2000-10-17 Kobe Steel Ltd Manufacture of inner surface grooved tube, and its manufacturing device
CN2897476Y (en) * 2006-04-13 2007-05-09 凌一波 Special-section steel cold-extruding rotating die bit
CN101767116A (en) * 2009-12-12 2010-07-07 罗世春 Manufacturing method of specially shaped taper pipe, and pipe-shrinkage machine and moulding mold therefor
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000288622A (en) * 1999-03-31 2000-10-17 Kobe Steel Ltd Manufacture of inner surface grooved tube, and its manufacturing device
CN2897476Y (en) * 2006-04-13 2007-05-09 凌一波 Special-section steel cold-extruding rotating die bit
CN101767116A (en) * 2009-12-12 2010-07-07 罗世春 Manufacturing method of specially shaped taper pipe, and pipe-shrinkage machine and moulding mold therefor
CN101992230A (en) * 2010-11-10 2011-03-30 江苏华程工业制管股份有限公司 Method for manufacturing profiled steel pipe
CN202021218U (en) * 2010-12-28 2011-11-02 苏州奥智机电设备有限公司 Cooling device for metal pipe spinner block
CN202984317U (en) * 2012-12-24 2013-06-12 浙江工贸职业技术学院 Seamless steel pipe integral forming die
CN110576067A (en) * 2018-06-10 2019-12-17 江苏君睿智能制造有限公司 Cold drawing die for seamless steel pipe

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Title
迟洪波: "新型无缝钢管冷拔复合模具的研究与应用", 《科技与企业》 *

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Effective date of registration: 20231007

Address after: No. 33 Guangbao Road, Guangyanghu Town, Baoying County, Yangzhou City, Jiangsu Province, 225800

Applicant after: JIANGSU XINGYANG PIPE FITTINGS Co.,Ltd.

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Applicant before: Wu Hailu

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