CN113877962A - High-speed continuous profiled wire rolling mill - Google Patents
High-speed continuous profiled wire rolling mill Download PDFInfo
- Publication number
- CN113877962A CN113877962A CN202111261301.6A CN202111261301A CN113877962A CN 113877962 A CN113877962 A CN 113877962A CN 202111261301 A CN202111261301 A CN 202111261301A CN 113877962 A CN113877962 A CN 113877962A
- Authority
- CN
- China
- Prior art keywords
- special
- rolling
- shaped wire
- wire rod
- shaped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
- B21B35/02—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills
- B21B35/04—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills each stand having its own motor or motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0057—Coiling the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0064—Uncoiling the rolled product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Wire Processing (AREA)
Abstract
The invention discloses a high-speed continuous special-shaped wire rolling mill, wherein a special-shaped wire is discharged from a front feeding device, shaped and straightened by a shaping and straightening device, then enters a special-shaped wire rolling device for rolling, then passes through a quality detection device for online quality detection, and finally enters a linkage take-up device for storage; the same deformation of the special-shaped wire rod adopts continuous rolling of a plurality of front and back stations, multiple rollers and multiple points are driven simultaneously, the size is adjusted in a micro mode for multiple times, high-precision control can be achieved, the stress index of the formed special-shaped wire rod is good, the multiple rollers are adopted to roll the section of the special-shaped wire rod simultaneously on the same rolling station according to the different deformation shapes of the section of the special-shaped wire rod, the shape of the special-shaped wire rod can be achieved quickly and accurately, and the size target value is achieved. The on-line detection device for the product quality is arranged, so that the product quality can be continuously and rapidly detected in a non-stop state, and the detected product quality is fed back to the central controller for servo adjustment. The production efficiency is high, and the special-shaped wire outlet speed can be more than 100 m/min.
Description
Technical Field
The invention relates to the technical field of special-shaped wire forming equipment, in particular to a high-speed continuous special-shaped wire rolling mill which is good in stress index and high in size control precision.
Background
The rolling method is used for producing the special-shaped wire rod by rolling the steel wire into the special-shaped section shape, at present, in the rolling process of the existing special-shaped wire rod, some methods adopt one-step rolling forming of one station, the deformation of the special-shaped wire rod rolled at one time is large, the radial rebound stress of the section of the special-shaped wire rod is large, the stress index of the formed special-shaped wire rod cannot meet the requirement, the size control precision is not high, and the product quality detection cannot realize on-line detection and feed back to a central controller in real time, so the speed and the quality of the produced product are limited due to the influence of equipment and process. The single machine speed for molding the special-shaped wire rod is 2-10 m/min. This greatly affects the industrial market for shaped wire.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a high-speed continuous special-shaped wire rolling mill, wherein special-shaped wires to be rolled are discharged from a feeding device in front of the rolling mill, are shaped and straightened, are rolled to obtain special-shaped wires with target section shapes, and are subjected to online quality detection and finally take-up storage.
The technical scheme adopted by the invention is that the high-speed continuous special-shaped wire rolling mill comprises a front feeding device, a shaping and straightening device, a special-shaped wire rolling device, a quality detection device and a linkage take-up device from left to right; the special-shaped wire rods are discharged by a front feeding device, shaped and straightened by a shaping and straightening device, then enter a special-shaped wire rod rolling device for rolling, pass through a quality detection device for online quality detection, and finally enter a linkage take-up device for storage; the special-shaped wire rolling device comprises a machine table, a rolling regulator, a roller seat, a servo direct drive motor, a roller and a position fine-tuning feeding device; more than 2 roller seats are arranged on the machine table along the advancing direction of the special-shaped wire rod, 2-8 rollers are arranged on each roller seat along the radial direction of the section of the special-shaped wire rod, each roller is provided with a position fine adjustment feeding device, the rollers are driven by the servo direct drive motor, and the rolling regulator performs coordinated control on all parts of the whole high-speed continuous special-shaped wire rod rolling mill.
Preferably, the feeding device in front of the machine comprises a wire storage device, a damping pay-off device and an anti-twisting steering device; the special-shaped wire is discharged through the wire storage device, the tension of the outgoing wire is adjusted through the damping wire discharging device, and the cross section direction is adjusted through the anti-twisting guide device, so that the special-shaped wire enters the shaping and straightening device in a correct mode.
Preferably, the shaping and straightening device comprises a positioning shaping roller and a correcting roller; the deformed special-shaped wire passes through the positioning shaping roller and the correcting roller in sequence to shape and straighten the deformed special-shaped wire.
Preferably, the quality detection device comprises a profile detector, an eddy current flaw detector and a video appearance detector; the profile detector is arranged between the roller seats of the special-shaped wire rolling device, the quality detection device feeds detection information back to the rolling regulator in real time, and servo adjustment is carried out on the servo direct drive motor and the position fine adjustment feeding device.
Preferably, the detection information includes the section size, the surface quality, the deformation and the crack of the special-shaped wire rod.
The invention has the beneficial effects that: 1. the stress index of the formed special-shaped wire rod is good, the rolling mill continuously rolls the special-shaped wire rod at a plurality of front and back stations according to the same deformation, the deformation of the special-shaped wire rod rolled at one time is small, and the radial rebound stress of the section of the special-shaped wire rod is small. The tearing quantity among metal crystal grains generated by deformation in metallographic detection is small, the crystal grains in the product are uniform and compact, and the tensile strength and the corrosion resistance of the product are greatly improved.
2. The size control precision is high. The same deformation of the special-shaped wire rod is continuously rolled by a plurality of stations in the front and the back, the size is micro-adjusted for a plurality of times, and high-precision control can be realized.
3. According to the different deformation shapes of the sections of the special-shaped wires on the same rolling station, multiple rollers (three rollers, four rollers, five rollers, six rollers and the like) are adopted for rolling the sections of the special-shaped wires simultaneously, so that the shapes of the special-shaped wires can be realized more quickly and accurately, and the target size value is reached.
4. Each roller seat is provided with a roller driving device, and the rollers on different stations provide forward driving force for rolling the special-shaped wire rod, so that the rolling speed of the special-shaped wire rod can be greatly improved.
5. The device is provided with the product quality on-line detection device, can realize continuous and rapid detection of the product quality under the state of no shutdown, and feeds back the product quality to the central controller, namely a rolling regulator, for servo adjustment.
6. The production efficiency is high, and the special-shaped wire outlet speed can be more than 100m/min under the condition of continuous and stable production.
Drawings
FIG. 1 is an overall structure diagram of a high-speed continuous special-shaped wire rolling mill according to the present invention.
FIG. 2 is a structural view of a front feeding device of the machine.
Fig. 3 shows a structure of the shaping and straightening device of the present invention.
FIG. 4 is a schematic view of a rolling apparatus for a shaped wire rod according to the present invention.
FIG. 5 is a front exploded view of the shaped wire of the present invention with multiple rollers.
FIG. 6 is a sectional side view of a sectional multi-roll shaft of the deformed wire rod of the present invention.
FIG. 7 is a view showing the structure of a roll stand, a roll and a position fine-adjustment feeding device according to the present invention.
FIG. 8 is a schematic diagram of the structure of the quality control device of the present invention.
Fig. 9 shows a structure of the linkage wire take-up device of the invention.
FIG. 10 is a cross-sectional, multi-roll front view of a profiled wire of an embodiment of the present invention.
FIG. 11 is an exploded side view of a profiled wire section of an embodiment of the present invention.
FIG. 12 is a front partial exploded view of a profiled wire section with multiple rollers according to an embodiment of the present invention.
FIG. 13 is a partial exploded view of a profiled wire section, multi-roll mandrel side of an embodiment of the invention.
The labels in the figure are: 1-special-shaped wire, 2-machine front feeding device, 3-shaping straightening device, 4-special-shaped wire rolling device, 5-quality detection device, 6-linkage take-up device, 21-wire storage device, 22-damping paying out device, 23-anti-torsion guider, 31-positioning shaping roller, 32-correction roller, 41-machine table, 42-rolling regulator, 43-roller seat, 44-servo direct drive motor, 45-roller, 46-position fine adjustment feeding device, 51-outline detector, 52-eddy current flaw detector, 53-video appearance detector, 61-take-up reel, 62-take-up drive motor, 101-example special-shaped wire, 102-example first roller, 103-example second roller, 104-example third roller, 105-example fourth roll.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations.
As shown in figure 1, the high-speed continuous special-shaped wire rolling mill comprises a front feeding device 2, a shaping and straightening device 3, a special-shaped wire rolling device 4, a quality detection device 5 and a linkage take-up device 6; the high-speed continuous special-shaped wire rolling mill discharges special-shaped wires 1 to be rolled from a front feeding device 2, shapes and straightens the wires by a shaping and straightening device 3, then the wires enter a special-shaped wire rolling device 4 for rolling to obtain the special-shaped wires 1 with the target section shape, the wires are subjected to online quality detection by a quality detection device 5, and finally the wires enter a linkage take-up device 6 for storage.
As shown in fig. 2, the front feeding device 2 includes a wire storage device 21, a damping paying-off device 22, and an anti-twisting guide device 23. The special-shaped wire 1 waiting for rolling is paid out through the wire storage device 21, the pulling force of the wire outlet is adjusted through the damping wire paying-out device 22, the section direction is adjusted through the torsion-proof guide device 23, and the special-shaped wire enters the shaping and straightening device 3 in a correct mode.
As shown in fig. 3, the deformed wire 1 enters the shaping and straightening device 3, passes through the positioning and shaping roller 31, and then enters the straightening roller 32 to shape and straighten the deformed wire 1.
As shown in fig. 4, the special-shaped wire rolling device 4 includes a machine table 41, a rolling regulator 42, a roller seat 43, a servo direct drive motor 44, a roller 45, and a position fine adjustment feeding device 46. A plurality of rolling seats 43 are arranged on the machine 41 along the advancing direction of the special-shaped wire 1, the number of the rolling seats 43 is at least 2, a plurality of rollers 45 are arranged on each rolling seat 43 along the radial direction of the section of the special-shaped wire 1, the number of the rollers 45 can be 2-8, and the complex deformation of the section of the special-shaped wire 1 can be realized, and the section shape can be one of a C shape, an E shape, an F shape, an H shape, a J shape, a K shape, an L shape, an N shape, an M shape, an S shape, a T shape, a U shape, a V shape, a W shape, an X shape, a Y shape, a Z shape, a plus shape and a minus shape, but is not limited to the above. As shown in fig. 7, each roller 45 is provided with a position fine-tuning feeding device 46, which can perform precise adjustment according to the change of the section size of the special-shaped wire 1, so as to ensure high-precision control of the section size of the special-shaped wire 1, each roller seat 43 is provided with a servo direct-drive motor 44 for driving the roller 45, and according to the difference of the number of the rollers 45 on the roller seats 43, at least more than 2 rollers 45 on each roller seat 43 are ensured to be changed from a driven wheel to a driving wheel in the rolling process of the special-shaped wire 1, so that the advancing speed of the special-shaped wire 1 is greatly increased, and the production efficiency is improved. Continuous rolling of a plurality of front and back stations can be adopted for the same deformation of the section of the special-shaped wire rod 1 according to requirements.
The whole set of equipment is provided with a central processing unit, so that the unified coordination control of the whole system is realized, and the rolling work of the special-shaped wire rod 1 is completed. The rolling regulator 42 is used as a central processing unit to realize the unified coordination control of the whole system of the front feeding device 2, the shaping straightening device 3, the special-shaped wire rolling device 4, the quality detection device 5 and the linkage wire take-up device 6, and complete the rolling work of the special-shaped wire 1.
As shown in fig. 8, the quality inspection apparatus 5 includes a profile tester 51, an eddy current flaw detector 52, a video appearance tester 53, and the like. The on-line measurements including cross-sectional dimensions, surface quality, deformation, cracks, etc. are fed back to the rolling mill adjustment 42 in real time for immediate adjustment. The profile detector 51 is provided between the roll stands 43 of the profiled wire rolling apparatus 4 and on the quality detection apparatus 5, and can perform online detection of the dimensional accuracy of the profiled wire 1 when the rolling mill is operating at high speed. The detection result is fed back to the rolling regulator 42 in real time, and servo adjustment is carried out on the servo variable frequency direct drive motor 44, the position fine adjustment feeding device 46 and the like, so that the product quality of the special-shaped wire 1 is controlled within a standard range.
As shown in fig. 9, the linked wire take-up device 6 includes: a take-up reel 61 and a take-up driving motor 62. The linkage take-up device 6 is arranged behind the special-shaped wire rolling device 4 and can be adjusted in a linkage mode according to the wiring speed of the special-shaped wire rolling device 4, and the defects of loosening, twisting, tensioning and the like of the special-shaped wire 1 are avoided in the take-up process.
The specific equipment configuration is selected as follows:
1. HHGK-100 model high-speed continuous special-shaped wire rod rolling mill. The front feeding device 2 is an 80-type hollow paying-off machine and a 300KG damper.
2. The shaping and straightening device 3 is an 80-23-wheel straightener.
3. The special-shaped wire rod rolling device 4 is provided with 8 roller seats 43, and the number of rollers 45 on each roller seat 43 is 2-6 according to different working procedures. Diameter of the roll 45
The roller 45 is provided with a 11kW direct drive servo motor with a torque of 3200 N.M. The minimum adjustment amount of position fine adjustment feeding is 0.001mm, and a 3KW servo pressing motor is arranged. 6ES7214-1AG40 central processing unit.
4. The quality detection device 5 includes: a 16KHZ ultra-high speed profile capture instrument, a light sensing 3D high-speed flaw detector and an CcD golden vision 1min imaging probe.
5. The linkage take-up device 6 is an 80-type hollow coiler.
As shown in fig. 10, 11, 12 and 13, the outlet speed in normal operation is 103m/s when the equipment is used for producing the GK-F7.12 special-shaped wire rod 1.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111261301.6A CN113877962A (en) | 2021-10-28 | 2021-10-28 | High-speed continuous profiled wire rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111261301.6A CN113877962A (en) | 2021-10-28 | 2021-10-28 | High-speed continuous profiled wire rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113877962A true CN113877962A (en) | 2022-01-04 |
Family
ID=79014959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111261301.6A Pending CN113877962A (en) | 2021-10-28 | 2021-10-28 | High-speed continuous profiled wire rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113877962A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113926861A (en) * | 2021-10-27 | 2022-01-14 | 梓兰特线（厦门）科技有限公司 | Multi-roller special-shaped rolling mill |
| CN118321340A (en) * | 2024-06-07 | 2024-07-12 | 中北大学 | A processing method for special-shaped metal wire |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1507960A (en) * | 2002-12-19 | 2004-06-30 | 日立金属株式会社 | Method and apparatus for forming special-shaped wire material |
| CN202384102U (en) * | 2011-12-27 | 2012-08-15 | 宜春圣达威电工材料有限公司 | Rotary damping paying-off device |
| CN104028575A (en) * | 2014-03-03 | 2014-09-10 | 福建东亚机械有限公司 | Processing technology and equipment for steel integral heterotype oil control ring wire rod moulding |
| CN105988437A (en) * | 2015-02-10 | 2016-10-05 | 张家港市宏鑫源科技有限公司 | Multi-stage universal rolling mill adopting distributed control system |
| CN108115000A (en) * | 2018-01-04 | 2018-06-05 | 上海展屿金属科技有限公司 | A kind of manufacturing method and its device of small bore high-precision hairbrush anchor profile shapes |
| CN108746242A (en) * | 2018-06-22 | 2018-11-06 | 安徽品志合金新材料有限公司 | The preparation method of slide fastener production Y type shaped wires |
| CN110153224A (en) * | 2019-06-11 | 2019-08-23 | 大连环新精密特钢股份有限公司 | Production line and production method for shaped wire rolling |
| CN210701693U (en) * | 2019-09-02 | 2020-06-09 | 苏州厚发精线有限公司 | Processing device for cold forming of metal special-shaped long material |
| CN211218013U (en) * | 2019-03-29 | 2020-08-11 | 沈阳市黎明机械构件制造厂 | Continuous rolling production line for special-shaped wire rods |
| CN216501509U (en) * | 2021-10-28 | 2022-05-13 | 华航高科(广州)有限公司 | High-speed continuous special-shaped wire mill |
-
2021
- 2021-10-28 CN CN202111261301.6A patent/CN113877962A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1507960A (en) * | 2002-12-19 | 2004-06-30 | 日立金属株式会社 | Method and apparatus for forming special-shaped wire material |
| CN202384102U (en) * | 2011-12-27 | 2012-08-15 | 宜春圣达威电工材料有限公司 | Rotary damping paying-off device |
| CN104028575A (en) * | 2014-03-03 | 2014-09-10 | 福建东亚机械有限公司 | Processing technology and equipment for steel integral heterotype oil control ring wire rod moulding |
| CN105988437A (en) * | 2015-02-10 | 2016-10-05 | 张家港市宏鑫源科技有限公司 | Multi-stage universal rolling mill adopting distributed control system |
| CN108115000A (en) * | 2018-01-04 | 2018-06-05 | 上海展屿金属科技有限公司 | A kind of manufacturing method and its device of small bore high-precision hairbrush anchor profile shapes |
| CN108746242A (en) * | 2018-06-22 | 2018-11-06 | 安徽品志合金新材料有限公司 | The preparation method of slide fastener production Y type shaped wires |
| CN211218013U (en) * | 2019-03-29 | 2020-08-11 | 沈阳市黎明机械构件制造厂 | Continuous rolling production line for special-shaped wire rods |
| CN110153224A (en) * | 2019-06-11 | 2019-08-23 | 大连环新精密特钢股份有限公司 | Production line and production method for shaped wire rolling |
| CN210701693U (en) * | 2019-09-02 | 2020-06-09 | 苏州厚发精线有限公司 | Processing device for cold forming of metal special-shaped long material |
| CN216501509U (en) * | 2021-10-28 | 2022-05-13 | 华航高科(广州)有限公司 | High-speed continuous special-shaped wire mill |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113926861A (en) * | 2021-10-27 | 2022-01-14 | 梓兰特线（厦门）科技有限公司 | Multi-roller special-shaped rolling mill |
| CN118321340A (en) * | 2024-06-07 | 2024-07-12 | 中北大学 | A processing method for special-shaped metal wire |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216501509U (en) | High-speed continuous special-shaped wire mill | |
| US3812702A (en) | Multi-pass method and apparatus for cold-drawing of metallic tubes | |
| CN113877962A (en) | High-speed continuous profiled wire rolling mill | |
| EP2514534A1 (en) | Equipment for manufacturing a cold-rolled material, and cold-rolling method | |
| CN110116146B (en) | A kind of intelligent belt threading method of high frequency welded pipe | |
| CN106944479A (en) | A kind of thin strip single chassis tandem mill and implementation | |
| JP7106004B2 (en) | Medium and small diameter thick-walled metal pipe and its manufacturing method | |
| JPS6319252B2 (en) | ||
| JPH09182903A (en) | Method and device for hot rolling or wire rod | |
| CN112090957A (en) | Preparation method of high-ductility cold-rolled ribbed steel bar | |
| US4510787A (en) | Method of manufacturing hollow rods | |
| CN219597698U (en) | Copper-clad aluminum wire drawing device and processing system using same | |
| JP3494131B2 (en) | Rolling control method used in production line of seamless steel pipe and production apparatus using the same | |
| JPH1133619A (en) | Manufacture of thin steel bar and manufacturing device | |
| CN107042240B (en) | A Realization Method of Dynamic Specification Variation in High Precision Strip Rolling Process Based on Feature Point Tracking | |
| EP1707284B1 (en) | Method for the production of defect-free calibrated steel bars | |
| US7334446B1 (en) | Method for producing a striplike pre-material made of metal, especially a pre-material which has been profiled into regularly reoccurring sections, and device therefor | |
| JP2639001B2 (en) | Rolling equipment | |
| RU108326U1 (en) | TECHNOLOGICAL TOOL OF A THREE-SWEEL CROSS-SCREW ROLLING MACHINE | |
| JP2662122B2 (en) | Manufacturing method of circular section material | |
| JPH06154840A (en) | Drawing method for electrode wire used for wire-electrical discharge machining | |
| CN211071297U (en) | Cable core wire drawing device | |
| JP2718363B2 (en) | Seamless tube thickness control method | |
| JP4013659B2 (en) | Thickness control method for tube mill | |
| CN213140909U (en) | A receive line pretreatment device for copper clad aluminum wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |