CN113385541A - Energy-saving continuous casting and rolling pendulum shear for thin slab - Google Patents
Energy-saving continuous casting and rolling pendulum shear for thin slab Download PDFInfo
- Publication number
- CN113385541A CN113385541A CN202110665385.3A CN202110665385A CN113385541A CN 113385541 A CN113385541 A CN 113385541A CN 202110665385 A CN202110665385 A CN 202110665385A CN 113385541 A CN113385541 A CN 113385541A
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- positioning surface
- wedge
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- continuous casting
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- 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
- B21B15/0007—Cutting or shearing the 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
- B21B15/0007—Cutting or shearing the product
- B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
Abstract
The invention belongs to the technical field of continuous casting and rolling, and relates to an energy-saving swing shear for continuous casting and rolling of a thin slab, wherein a guide sleeve and a guide rod are arranged between an upper shearing device of the swing shear and an eccentric crankshaft; one end of the guide sleeve is rotatably connected with the eccentric crankshaft, the other end of the guide sleeve is provided with a guide hole, one end of the guide rod is slidably connected with the guide sleeve through the guide hole, and the other end of the guide rod is connected with the upper shearing device; the guide sleeve is provided with a first positioning surface, and the guide rod is provided with a second positioning surface; a wedge-shaped block is arranged between the first positioning surface and the second positioning surface; the first positioning surface and the second positioning surface are in contact with the wedge block surface; the wedge-shaped block is connected with a driving device; the wedge-shaped block is driven by the driving device to slide between the first positioning surface and the second positioning surface so as to adjust the distance between the first positioning surface and the second positioning surface. The wedge-shaped block is adopted to replace the traditional hydraulic cylinder positioning mode, and a hydraulic pressurization system is omitted, so that the requirements of a power system and an oil supply system of a hydraulic station are reduced, and the equipment investment cost and the energy consumption of the pendulum shear are reduced.
Description
Technical Field
The invention belongs to the technical field of continuous casting and rolling, and relates to an energy-saving swing shear for continuous casting and rolling of a thin slab.
Background
The pendulum shear is an important core device in a thin slab continuous casting and rolling unit and is used for shearing a dummy bar and an intermediate slab. The required shear forces are also very large due to the large thickness and large width of the slabs to be sheared.
In the prior art, for example, chinese patent publication No. CN112809066A discloses a hot rolled slab connection device, which includes an upper shearing device and a lower shearing device arranged in a vertical direction, a fixed frame, a hydraulic shearing device, and a swing control device for swinging and shearing the hot rolled slab. The hot-rolled plate blank swinging shear swing control device comprises a transmission eccentric crankshaft assembly and a swinging frame assembly, wherein the transmission eccentric crankshaft assembly mainly comprises a motor, a gear box I, a transmission eccentric crankshaft body and an absolute value encoder; the two ends of the transmission eccentric crankshaft body are symmetrically provided with bearing seats I, the transmission eccentric crankshaft body is installed on the fixed frame through the bearing seats I, the output end of the motor is connected with the input end of the gear box I through a coupler I, and the output end of the gear box I is connected with one end of the transmission eccentric crankshaft body through a coupler II; the swing frame assembly includes two swing frame bodies.
Also, as disclosed in chinese patent No. CN110497011B, a pendulum shear is disclosed, which comprises a speed reducer, an eccentric shaft, a bracket, an integral shear blade frame, a master cylinder, a pressure plate cylinder, a balance cylinder, and a pendulum cylinder, wherein the speed reducer is connected to the eccentric shaft through a coupling; the bracket is supported on a ground foundation, and the upper end of the bracket is provided with a pair of first bearing seats; the integral shear blade frame comprises a swing frame, an upper shear blade frame and a lower shear blade frame, and a pair of second bearing seats are arranged at the upper end of the swing frame; frame sliding plates are arranged on two sides of the upper shear blade frame and are in sliding fit with the upper portion of the swing frame, the lower shear blade frame is fixed on the lower portion of the swing frame, a third bearing seat is arranged at the upper end of the main oil cylinder, and the lower end of the main oil cylinder is connected with the upper shear blade frame; the first bearing seat, the second bearing seat and the third bearing seat are respectively matched with the eccentric shaft; the pressing plate oil cylinder is arranged on the upper shear blade frame, and a piston rod of the pressing plate oil cylinder is downwards connected with the pressing plate; the balance cylinder is arranged on the swing frame and connected with the two sides of the upper shear blade frame; the swing cylinder is installed on the bracket and connected to the back of the swing frame.
Compared with the traditional plate blank swing shears, the thin plate blank continuous casting and rolling swing shears have different shearing technological processes and adopt the modes of upper shear blade positioning and lower shear blade lifting. In the prior art, the upper shear blade positioning structure adopts a large non-standard hydraulic cylinder and is provided with a pressurization system, so that over 2000 tons of reverse shearing force is provided, the hydraulic cylinder directly bears the shearing force during working, and the hydraulic cylinder is high in loss; and a large hydraulic station of several hundred kilowatts is required to supply hydraulic oil to the hydraulic cylinders. Therefore, in the prior art, the energy consumption and direct investment cost in the using process are very high.
Disclosure of Invention
In view of this, the present invention provides an energy-saving pendulum shear for continuous casting and rolling of thin slabs, which aims to solve the problems of fast hydraulic cylinder loss and high power consumption in the positioning mode of the existing upper shearing device.
In order to achieve the purpose, the invention provides the following technical scheme:
an energy-saving swing shear for continuously casting and rolling thin slabs is characterized in that a guide sleeve and a guide rod are arranged between an upper shearing device and an eccentric crankshaft of the swing shear; one end of the guide sleeve is rotatably connected with the eccentric crankshaft, the other end of the guide sleeve is provided with a guide hole, one end of the guide rod is arranged in the guide hole and is in sliding connection with the guide sleeve through the guide hole, and the other end of the guide rod is connected with the upper shearing device; the guide sleeve is provided with a first positioning surface, the guide rod is provided with a second positioning surface, and the working height of the upper shearing device is determined by the distance between the first positioning surface and the second positioning surface; a wedge-shaped block is arranged between the first positioning surface and the second positioning surface; the first positioning surface and the second positioning surface are in surface contact with the wedge-shaped block; the wedge-shaped block is connected with a driving device; the wedge-shaped block is driven by a driving device to slide between the first positioning surface and the second positioning surface so as to change the distance between the first positioning surface and the second positioning surface.
According to the basic scheme, the wedge-shaped block is adopted to adjust the extending distance of the guide rod, so that the upper shearing device is positioned, and the shearing force is directly transmitted through the guide rod and the guide sleeve, so that the situation that a hydraulic cylinder directly bears the shearing force in the traditional mode is avoided; meanwhile, the wedge block replaces the traditional hydraulic cylinder positioning mode, so that a hydraulic pressurization system is eliminated, the requirements of a power system and an oil supply system of a hydraulic station are reduced, and the equipment investment cost and the energy consumption of the pendulum shear are reduced.
Furthermore, a sliding part is arranged at the end, far away from the upper shearing device, of the guide rod; the sliding part is arranged in the guide hole and slides in the guide hole.
Further, a sliding bearing is arranged in the guide hole, and the sliding part is in sliding fit with the sliding bearing.
Further, a U-shaped groove is formed in the wedge-shaped block, and the guide rod is arranged in the U-shaped groove; the width of the U-shaped groove is smaller than the outer diameter of the sliding part; the wedge-shaped block is provided with a U-shaped groove for avoiding the spatial position of the guide rod; the width of the U-shaped groove is smaller than the outer diameter of the sliding part, and the sliding part is limited in the guide hole.
Furthermore, an ejector rod is arranged at the end, close to the upper shearing device, of the guide rod; the ejector rod is sleeved with a hoop, and the hoop is fixedly connected with the upper shearing device.
Furthermore, one end of the driving device is fixedly connected to the guide sleeve, and the other end of the driving device is provided with a pin shaft; an L-shaped connecting rod is arranged between the wedge-shaped block and the driving device, one end of the L-shaped connecting rod is connected with the wedge-shaped block, a strip-shaped hole is axially formed in the other end of the L-shaped connecting rod along the guide rod, and the pin shaft is connected with the L-shaped connecting rod through the strip-shaped hole; the driving device drives the wedge block to slide left and right through the L-shaped connecting rod, and meanwhile the L-shaped connecting rod slides up and down along the strip-shaped hole, so that the wedge block is attached to the first positioning surface and the second positioning surface, and the working height of the upper shearing device is changed.
Furthermore, the number of the wedge-shaped blocks is at least 1, and each wedge-shaped block is respectively connected with a driving device; each wedge-shaped block is independently driven by a driving device, so that the stacking height of the wedge-shaped blocks can be conveniently controlled.
Further, the number of the wedge blocks is multiple, the wedge blocks are arranged in a stacked mode along the axial direction of the guide rod, and two adjacent wedge blocks are arranged oppositely; the wedge-shaped block stacking type is adopted, so that the positioning adjustment speed can be improved, the length of a single wedge-shaped block is reduced, the efficiency is improved, and the space layout is facilitated.
Furthermore, the end of the guide sleeve, which is far away from the upper shearing device, is provided with a split bearing, and the guide sleeve is rotatably connected with the eccentric crankshaft through the split bearing.
The invention has the beneficial effects that:
1) the upper shearing device is provided with the two positioning surfaces, the wedge-shaped block is arranged between the positioning surfaces, and the distance between the positioning surfaces is adjusted through the movement of the wedge-shaped block, so that the working height of the upper shearing device is adjusted.
2) The invention replaces the traditional hydraulic cylinder positioning mode with the wedge-shaped block positioning mode, and realizes that the shearing force is directly transmitted through the guide rod and the guide sleeve, thereby avoiding the hydraulic cylinder from directly bearing the shearing force; meanwhile, a hydraulic pressurization system is eliminated, and the equipment investment cost and the energy consumption of the pendulum shear are reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a front view of an energy-saving type swing shear for continuous casting and rolling of thin slabs in the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a front view of the guide bar mounting structure of the present invention;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a schematic view of the structure of the guide bar of the present invention;
FIG. 6 is a schematic view of the structure of the guide sleeve of the present invention;
FIG. 7 is a front view of a wedge block in the present invention;
FIG. 8 is a top view of FIG. 7;
reference numerals: 1-a motor; 2-a gearbox; 3-an eccentric crankshaft; 4-a guide sleeve; 5-a guide rod; 6-wedge block; 7-a negative pressure system; 8-an upper shearing device; 9-a swing frame; 10-a lower shearing device; 11-split bearings; 12-a bidirectional hydraulic cylinder; 13-a sliding bearing; 14-a mandril; 15-clamping a hoop; a 16-L shaped connecting rod; 17-a strip-shaped hole; 18-a pin shaft; 41-a first location face; 42-a pilot hole; 61-a second positioning surface; 62-sliding part.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Example 1
Referring to fig. 1 to 8, the energy-saving swing shears for continuous casting and rolling of thin slabs comprises a motor 1, a gear box 2, an eccentric crankshaft 3, a negative pressure system 7, an upper shearing device 8, a swing frame 9 and a lower shearing device 10, wherein the motor 1 is connected with the eccentric crankshaft 3 through the gear box 2, the eccentric crankshaft 3 is connected with the upper shearing device 8, the eccentric crankshaft 3 is mounted on the swing frame 9, and the motor 1 drives the eccentric crankshaft 3 to rotate to drive the upper shearing device 8 to move and realize shearing of slabs together with the lower shearing device 10. Wherein, a guide sleeve 4 and a guide rod 5 are arranged between the upper shearing device 8 and the eccentric crankshaft 3; one end of the guide sleeve 4 is rotatably arranged on the eccentric crankshaft 3 through the split bearing 11, and the other end is provided with a guide hole 42; one end of the guide rod 5 is provided with a sliding part 62, a sliding bearing 13 is installed in the guide hole 42, the sliding part 62 is installed in the sliding bearing 13 and slides in the guide hole 42, the other end of the guide rod 5 is provided with a top rod 14, a clamp 15 is sleeved on the top rod 14, and the clamp 15 is fixedly connected with the upper shearing device 8 through a bolt; the guide sleeve 4 is provided with a first positioning surface 41, the guide rod 5 is provided with a second positioning surface 61, and the working height of the upper shearing device 8 is determined by the distance between the first positioning surface 41 and the second positioning surface 61.
In this embodiment, two opposite wedge blocks 6 stacked up and down are installed between the first positioning surface 41 and the second positioning surface 61; the first positioning surface 41 and the second positioning surface 61 are in surface contact with the wedge block 6; the wedge-shaped block 6 is connected with a bidirectional hydraulic cylinder 12; the two wedge blocks 6 are driven by the bidirectional hydraulic cylinder 12 to slide between the first positioning surface 41 and the second positioning surface 61 so as to change the distance between the first positioning surface 41 and the second positioning surface 61.
In the embodiment, a U-shaped groove is formed in the wedge-shaped block 6, and the guide rod 5 is installed in the U-shaped groove; the width of the U-shaped groove is smaller than the outer diameter of the sliding portion 62, and the sliding portion 62 is confined in the guide hole 42.
In this embodiment, one end of the bidirectional hydraulic cylinder 12 is fixedly installed on the guide sleeve 4, and the other end is fixedly installed with a pin 18; be provided with L type connecting rod 16 between wedge 6 and two-way pneumatic cylinder 12, install on wedge 6L type connecting rod 16 one end, the other end is provided with bar hole 17 along 5 axial of guide bar, round pin axle 18 passes through bar hole 17 and is connected with L type connecting rod 16, when wedge 6 horizontal slip, under negative pressure system 7's axial tension, bar hole 17 is 18 upwards slided to round pin axle relatively, two wedges 6 are hugged closely between first locating surface 41 and second locating surface 61, 8 location of shearing mechanism in the realization.
Example 2
This example differs from example 1 in that: the number of the wedge-shaped blocks 6 is only 1, the driving device adopts a single-cylinder hydraulic cylinder, and other structures and connection relations are the same as those of the embodiment 1.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (9)
1. The utility model provides an energy-saving sheet billet continuous casting rolls pendulum and cuts which characterized in that: a guide sleeve and a guide rod are arranged between an upper shearing device of the pendulum shear and the eccentric crankshaft; one end of the guide sleeve is rotatably connected with the eccentric crankshaft, and the other end of the guide sleeve is provided with a guide hole; one end of the guide rod is arranged in the guide hole and is connected with the guide sleeve in a sliding way through the guide hole, and the other end of the guide rod is connected with the upper shearing device; the guide sleeve is provided with a first positioning surface, the guide rod is provided with a second positioning surface, and the working height of the upper shearing device is determined by the distance between the first positioning surface and the second positioning surface; a wedge-shaped block is arranged between the first positioning surface and the second positioning surface; the first positioning surface and the second positioning surface are in surface contact with the wedge-shaped block; the wedge-shaped block is connected with a driving device; the wedge-shaped block is driven by a driving device to slide between the first positioning surface and the second positioning surface so as to change the distance between the first positioning surface and the second positioning surface.
2. The energy-saving thin slab continuous casting and rolling pendulum shear of claim 1, wherein: the end of the guide rod, which is far away from the upper shearing device, is provided with a sliding part; the sliding part is arranged in the guide hole and slides in the guide hole.
3. The energy-saving thin slab continuous casting and rolling pendulum shear of claim 2, characterized in that: and a sliding bearing is arranged in the guide hole, and the sliding part is in sliding fit with the sliding bearing.
4. The energy-saving thin slab continuous casting and rolling pendulum shear of claim 2, characterized in that: the wedge-shaped block is provided with a U-shaped groove, and the guide rod is arranged in the U-shaped groove; the width of the U-shaped groove is smaller than the outer diameter of the sliding part.
5. The energy-saving thin slab continuous casting and rolling pendulum shear of claim 1, wherein: the guide rod is provided with a top rod at the end close to the upper shearing device; the ejector rod is sleeved with a hoop, and the hoop is fixedly connected with the upper shearing device.
6. The energy-saving thin slab continuous casting and rolling pendulum shear of claim 1, wherein: one end of the driving device is fixedly connected to the guide sleeve, and the other end of the driving device is provided with a pin shaft; be equipped with L type connecting rod between wedge and the drive arrangement, L type connecting rod one end is connected with the wedge, and the other end is equipped with the bar hole along the guide bar axial, the round pin axle passes through the bar hole and is connected with L type connecting rod.
7. The energy-saving thin slab continuous casting and rolling pendulum shear of claim 1, wherein: the number of the wedge-shaped blocks is at least 1, and each wedge-shaped block is respectively connected with a driving device.
8. The energy-saving thin slab continuous casting and rolling pendulum shear of claim 7, wherein: the wedge block has a plurality ofly, and a plurality ofly the wedge block is along guide bar axial stack setting, and two adjacent wedge blocks are arranged relatively.
9. The energy-saving thin slab continuous casting and rolling pendulum shear of claim 1, wherein: and the end of the guide sleeve, which is far away from the upper shearing device, is provided with a split bearing, and is rotationally connected with the eccentric crankshaft through the split bearing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110665385.3A CN113385541A (en) | 2021-06-16 | 2021-06-16 | Energy-saving continuous casting and rolling pendulum shear for thin slab |
| PCT/CN2022/079650 WO2022262326A1 (en) | 2021-06-16 | 2022-03-08 | Energy-saving pendulum shear for thin slab continuous casting and continuous rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110665385.3A CN113385541A (en) | 2021-06-16 | 2021-06-16 | Energy-saving continuous casting and rolling pendulum shear for thin slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113385541A true CN113385541A (en) | 2021-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110665385.3A Pending CN113385541A (en) | 2021-06-16 | 2021-06-16 | Energy-saving continuous casting and rolling pendulum shear for thin slab |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113385541A (en) |
| WO (1) | WO2022262326A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114378115A (en) * | 2022-02-24 | 2022-04-22 | 中冶赛迪工程技术股份有限公司 | Continuous casting and rolling pendulum shear |
| WO2022262326A1 (en) * | 2021-06-16 | 2022-12-22 | 中冶赛迪工程技术股份有限公司 | Energy-saving pendulum shear for thin slab continuous casting and continuous rolling |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2236595A1 (en) * | 1973-07-13 | 1975-02-07 | Nippon Steel Corp | Crank-operated flying shear - has lower blade holder sliding on rocking upper blade holder levers |
| JPS5987912A (en) * | 1982-11-10 | 1984-05-21 | Hitachi Ltd | Device for regulating pass line in rolling mill |
| DE3544781A1 (en) * | 1985-12-18 | 1987-06-19 | Schloemann Siemag Ag | METHOD AND DEVICE FOR THE ALTITUDE TRANSFER OF ROLLS IN ROLLING DEVICES |
| AT504209B1 (en) * | 2006-11-16 | 2008-04-15 | Voest Alpine Ind Anlagen | ROLL CHANGING DEVICE WITH WEDGE ADJUSTING DEVICE |
| CN202388043U (en) * | 2011-12-30 | 2012-08-22 | 一重集团大连设计研究院有限公司 | Online adjusting device for gap between shear blades of hydraulic shearing machine for large aluminum plate hot-rolling mill |
| CN210615270U (en) * | 2019-07-25 | 2020-05-26 | 中冶赛迪技术研究中心有限公司 | Hot-rolled strip steel shearing and crimping device balance system |
| CN110369775B (en) * | 2019-07-25 | 2024-03-15 | 中冶赛迪技术研究中心有限公司 | Balancing system of hot-rolled strip steel shearing and crimping device |
| CN210586371U (en) * | 2019-08-09 | 2020-05-22 | 中冶赛迪技术研究中心有限公司 | Synchronous mechanism of hot-rolled strip steel endless rolling intermediate billet connecting device |
| CN110314935A (en) * | 2019-08-09 | 2019-10-11 | 中冶赛迪技术研究中心有限公司 | Endless-rolled intermediate billets of hot-rolled strip steel attachment device synchronization mechanism |
| CN113385541A (en) * | 2021-06-16 | 2021-09-14 | 中冶赛迪工程技术股份有限公司 | Energy-saving continuous casting and rolling pendulum shear for thin slab |
| CN215696779U (en) * | 2021-06-16 | 2022-02-01 | 中冶赛迪工程技术股份有限公司 | Energy-saving continuous casting and rolling pendulum shear for thin slab |
-
2021
- 2021-06-16 CN CN202110665385.3A patent/CN113385541A/en active Pending
-
2022
- 2022-03-08 WO PCT/CN2022/079650 patent/WO2022262326A1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022262326A1 (en) * | 2021-06-16 | 2022-12-22 | 中冶赛迪工程技术股份有限公司 | Energy-saving pendulum shear for thin slab continuous casting and continuous rolling |
| CN114378115A (en) * | 2022-02-24 | 2022-04-22 | 中冶赛迪工程技术股份有限公司 | Continuous casting and rolling pendulum shear |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022262326A1 (en) | 2022-12-22 |
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