CN211116895U - Hexahedron top press capable of realizing high-pressure torsion - Google Patents
Hexahedron top press capable of realizing high-pressure torsion Download PDFInfo
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- CN211116895U CN211116895U CN201921982289.6U CN201921982289U CN211116895U CN 211116895 U CN211116895 U CN 211116895U CN 201921982289 U CN201921982289 U CN 201921982289U CN 211116895 U CN211116895 U CN 211116895U
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Abstract
The utility model relates to a can realize the torsional hexahedron roof pressure machine of high pressure. The problems that an existing hexahedron top pressing machine cannot prepare large-size axisymmetric samples capable of being subjected to mechanical property testing and cannot carry out industrial production are solved, the large-size axisymmetric samples comprise six top pressing cylinders which are two-two symmetrical and coaxially arranged, the two adjacent top pressing cylinders are movably connected through a hinge device, the top pressing cylinder located at the bottom is perpendicularly installed on a circular base through a fixing mechanism, a hydraulic oil cylinder with a cylinder barrel is installed in an inner cavity of the top pressing cylinder, the cylinder barrel is fixed in the top pressing cylinder through an installation assembly, a guide sleeve body is arranged on the circumferential inner side of the cylinder barrel, an integrated piston rod is arranged in the guide sleeve body, and a ball screw transmission device is arranged. The utility model has the advantages that: the large-size axisymmetric sample which can be subjected to mechanical property test is easy to prepare, and meanwhile, the large-size axisymmetric sample can provide enough pressure environment for high-pressure torsion and can be industrially produced.
Description
Technical Field
The utility model relates to a hexahedron roof pressure machine technical field, concretely relates to can realize the torsional hexahedron roof pressure machine of high pressure.
Background
The hexahedron top press is provided with six working oil cylinders, is a widely used large-cavity top press, is mainly applied to the field of material synthesis, provides a high-pressure environment for material synthesis, has the characteristics of simple structure, low manufacturing cost, easy operation and maintenance and precise design, is characterized in that six top hammers are symmetrical and coaxially arranged in pairs, three axes are mutually vertical and intersect at one point, and the self-centering property is strong, can continuously work, is easy to realize automation and the like, a high-pressure torsion method is one of large plastic deformation methods, namely, when the axial compression is carried out, a torque is applied to the cross section, the frictional resistance can be changed into frictional power, therefore, certain torsional deformation is realized, simple compressive deformation is realized, the effect of refining crystal grains by a high-pressure torsion method is obvious, the mechanical property and the corrosion resistance of materials can be improved, and the high-pressure torsion method is suitable for producing axially symmetric parts. The problems existing in the prior high-pressure torsion are as follows: the large-size axisymmetric sample which can be used for mechanical property test is not easy to prepare, only a small-volume fine crystal material can be produced, the industrialized large-scale production cannot be carried out, and if the pressure is too large, a large pulling force is generated, the oil cylinder is easy to damage, and the service life of the equipment is shortened.
In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, chinese patent literature discloses a hinge beam structure [ CN201610344653.0] of a cubic press, which includes cylinders of the cubic press, each cylinder being provided with a hinge for hinging the cylinder by a pin, a frustum being fixedly mounted at a bottom end of each cylinder, 4 mounting holes being uniformly distributed on a conical surface of each frustum, and each frustum being fixedly connected to 4 adjacent frustums by a pull rod through the 4 mounting holes.
The scheme solves the problems that the existing hexahedron top press is easy to damage the oil cylinder and reduce the service life of equipment to a certain extent, but the scheme still has a plurality of defects, for example, large-size axisymmetric samples which can be subjected to mechanical property testing cannot be prepared, and industrial production cannot be carried out.
Disclosure of Invention
The utility model aims at the above-mentioned problem, provide a reasonable in design, but the torsional hexahedron roof pressure machine of high pressure can be realized to industrial production jumbo size axisymmetric sample.
In order to achieve the above purpose, the utility model adopts the following technical proposal: the hexahedron top pressing machine capable of realizing high-pressure torsion comprises six top pressing cylinders which are symmetrical pairwise and are coaxially arranged, three axes of the top pressure cylinders are vertical to each other and intersect at one point, two adjacent top pressure cylinders are movably connected through a hinge device arranged at the circumferential outer side of the top pressure cylinder, a top pressure cylinder positioned at the bottom is vertically arranged on the circular base through a fixing mechanism, a hydraulic oil cylinder with a cylinder barrel is arranged in the inner cavity of the top pressure cylinder, the cylinder barrel is fixed in the top pressure cylinder through an installation component, the cylinder barrel is in a step-type structure, a guide sleeve body mutually attached to the step-type structure is arranged on the circumferential inner side of the cylinder barrel, an integrated piston rod capable of axially moving along the guide sleeve body is arranged in the guide sleeve body, a dustproof sealing component is arranged on the circumferential outer side of the integrated piston rod and the circumferential, and one end of the hydraulic oil cylinder arranged on the circular base, which is far away from the circular base, is provided with a ball screw transmission device. The integrated piston rod is driven by the hydraulic oil cylinders on the periphery and the upper portion to axially move along the guide sleeve body, so that a high-pressure environment is provided, and the integrated piston rod with the ball screw transmission device arranged at the head portion below rotates to output torque during axial movement.
In foretell hexahedron roof pressure machine that can realize high pressure and twist reverse, dustproof seal subassembly includes piston rod sealing washer, and piston rod sealing washer circumference is installed in integral type piston rod and the contact department lower extreme of guide sleeve body circumference, and integral type piston rod and the contact department upper end circumference of guide sleeve body are equipped with the dust ring that prevents outside dust entering, and lie in dust ring and piston rod sealing washer middle part position circumference and be equipped with the guide ring.
In foretell hexahedron roof pressure machine that can realize high pressure and twist reverse, the guide sleeve body upper end is equipped with the end cover, and the end cover middle part position is equipped with the circular port that can supply the integral type piston rod to pass, and end cover circumference edge is equipped with the fixed orifices, and the guide sleeve body upper end links to each other and seals the cylinder upper end through the end cover with cylinder up end stationary phase through the fixed orifices on the end cover.
In foretell can realize the torsional hexahedron roof pressure machine of high pressure, ball screw drive includes the scroll casing, be equipped with first spiral groove in the enclosed construction and the inner chamber of scroll casing upper end, the output moment of torsion is connected through bolt and end cover in the scroll casing upper end, integral type tailpiece of the piston rod portion circumference outside is equipped with the second spiral groove corresponding with first spiral groove, and first spiral groove and second spiral groove form the ball holding tank jointly, be equipped with a plurality of balls that prevent the collision of scroll casing inner wall and integral type tailpiece of the piston rod outer wall in the ball holding tank.
In the hexahedron top press capable of realizing high-pressure torsion, the fixing mechanism comprises a circular tray, the circular tray is mounted at the upper end of the circular base through a triangular support, a plurality of positioning holes are formed in the circular tray, threaded holes corresponding to the positioning holes are formed in the lower end face of the top press barrel, and the lower end of the top press barrel is fixed in the circular tray through bolts. The triangular support piece can balance the moment of the circular tray, and the equipment is prevented from shaking in the working process.
In the hexahedron top press machine capable of realizing high-pressure torsion, the mounting assembly comprises a plurality of through holes which are circumferentially arranged on the lower end face of the integrated piston rod, and the lower end face of the cylinder barrel is provided with mounting holes which are in one-to-one correspondence with the through holes.
In the hexahedron top press machine capable of realizing high-pressure torsion, the hinge device comprises connecting pieces, the connecting pieces are arranged on the outer sides of the circumferential direction of the top press cylinders and are arranged oppositely, the axes of the connecting pieces are vertically crossed, connecting holes are formed in the end portions of the connecting pieces, and the connecting pieces located on different top press cylinders are connected pairwise through pin shafts inserted into the connecting holes.
In the hexahedral top press machine capable of realizing high-pressure torsion, the center of the bottom of the cylinder barrel is provided with the oil conveying channel, one end of the oil conveying channel is communicated with the oil conveying hole arranged at one end of the top press barrel, and the other end of the oil conveying channel is communicated with the oil duct arranged on the inner wall of the cylinder barrel.
In the hexahedron top pressure machine capable of realizing high-pressure torsion, an annular sealing ring for preventing the bottom of the cylinder barrel from falling off under stress is arranged between the inner wall of the bottom of the cylinder barrel and the outer wall of the integrated piston rod.
In the hexahedral top press machine capable of realizing high-pressure torsion, the upper end surface of the circular base is circumferentially provided with an annular mounting hole for fixing the bottom of the top press machine.
Compared with the prior art, the utility model has the advantages of: the device has the advantages of simple structure, low cost and highly symmetrical structure, is easy to prepare large-size axisymmetric samples which can be subjected to mechanical property test, can provide enough pressure environment for high-pressure torsion, and can be industrially produced.
Drawings
FIG. 1 is an overall structure of the present invention;
Fig. 2 is a cross-sectional view of the overall structure of the present invention;
FIG. 3 is a sectional view of the hydraulic cylinder structure of the present invention;
Fig. 4 is a schematic structural view of the integrated piston rod of the present invention;
Fig. 5 is a schematic view of the structure of the screw sleeve of the present invention;
Fig. 6 is a schematic structural view of the circular base of the present invention;
In the figure, the jacking cylinder 1, the mounting assembly 11, the hinge device 2, the connecting piece 21, the connecting hole 22, the pin shaft 23, the fixing mechanism 3, the circular tray 31, the triangular support 32, the positioning hole 33, the threaded hole 34, the circular base 4, the annular mounting hole 41, the hydraulic cylinder 5, the cylinder barrel 51, the mounting hole 52, the oil delivery channel 53, the oil delivery hole 54, the annular sealing ring 55, the guide sleeve body 6, the end cover 61, the circular hole 611, the fixing hole 612, the integrated piston rod 7, the second spiral groove 71, the through hole 72, the dustproof sealing assembly 8, the piston rod sealing ring 81, the dustproof ring 82, the guide ring 83, the ball spiral transmission device 9, the spiral sleeve 91, the first spiral groove 911, the ball accommodating groove 92 and the ball 93 are shown.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-6, the hexahedral top press capable of realizing high-pressure torsion comprises six top press cylinders 1 which are symmetric pairwise and coaxially arranged, three axes of the top press cylinders 1 are perpendicular to each other and intersect at a point, two adjacent top press cylinders 1 are movably connected through a hinge device 2 arranged on the circumferential outer side of the top press cylinders 1, one top press cylinder 1 at the bottom is vertically arranged on a circular base 4 through a fixing mechanism 3, a hydraulic oil cylinder 5 with a cylinder barrel 51 is arranged in an inner cavity of the top press cylinder 1, the hexahedral top press is characterized in that the cylinder barrel 51 is fixed in the top press cylinder 1 through a mounting assembly 11, the cylinder barrel 51 is of a stepped structure, a guide sleeve body 6 which is mutually attached to the stepped structure is arranged on the circumferential inner side of the cylinder barrel 51, an integrated piston rod 7 which can axially move along the guide sleeve body 6 is arranged in the guide sleeve body 6, a dustproof, and one end of the hydraulic oil cylinder 5 arranged on the circular base 4, which is far away from the circular base 4, is provided with a ball screw transmission device 9. The integrated piston rod 7 is driven by the hydraulic oil cylinders 5 on the periphery and the upper portion to axially move along the guide sleeve body 6, so that a high-pressure environment is provided, and the integrated piston rod 7 provided with the ball screw transmission device 9 at the head portion below rotates to output torque during axial movement.
Wherein, dustproof seal assembly 8 includes piston rod sealing washer 81, and piston rod sealing washer 81 circumference is installed in integral type piston rod 7 and the contact department lower extreme of guide sleeve 6 circumference, and integral type piston rod 7 is equipped with the dust ring 82 that prevents outside dust entering with the contact department upper end circumference of guide sleeve 6, and is located dust ring 82 and piston rod sealing washer 81 middle part position circumference and is equipped with guide ring 83. The arrangement of the dustproof sealing assembly 8 avoids dust entering the integrated piston rod 7, prevents the integrated piston rod 7 from generating large friction force during movement, and the guide ring 83 is made of polytetrafluoroethylene or nonmetal materials.
Further, an end cover 61 is arranged at the upper end of the guide sleeve body 6, a circular hole 611 for the integrated piston rod 7 to pass through is arranged in the middle of the end cover 61, a fixing hole 612 is arranged on the circumferential edge of the end cover 61, the upper end of the guide sleeve body 6 is fixed with the upper end face of the cylinder barrel 51 through the fixing hole 612 on the end cover 61 and is connected with the upper end of the cylinder barrel 51 through the end cover 61 in a fixed mode, and the upper end of.
Visibly, the ball screw transmission device 9 comprises a screw sleeve 91, the upper end of the screw sleeve 91 is of a closed structure, a first spiral groove 911 is arranged in an inner cavity of the screw sleeve 91, the upper end of the screw sleeve 91 is connected with the end cover 61 through a bolt to output torque, a second spiral groove 71 corresponding to the first spiral groove 911 is arranged on the circumferential outer side of the end part of the integrated piston rod 7, the first spiral groove 911 and the second spiral groove 71 jointly form a ball accommodating groove 92, and a plurality of balls 93 for preventing the collision between the inner wall of the screw sleeve 91 and the outer wall of the integrated piston rod 7 are arranged in the ball accommodating groove 92. The balls 93 can drive the screw sleeve 91 to rotate to output torque, the balls 93 are uniformly distributed in the ball accommodating grooves 92, and the balls 93 are uniformly distributed in the screw accommodating grooves 92 by using ball retainers between the adjacent balls 93, so that the balls 93 are prevented from colliding with each other or generating friction.
Obviously, the fixing mechanism 3 includes a circular tray 31, the circular tray 31 is mounted on the upper end of the circular base 4 through a triangular support 32, a plurality of positioning holes 33 are formed in the circular tray 31, the lower end surface of the pressing cylinder 1 is provided with threaded holes 34 corresponding to the positioning holes 33, and the lower end of the pressing cylinder 1 is fixed in the circular tray 31 through bolts. The triangular support 32 can balance the pressure on the circular tray 31, and the shaking of the equipment in the working process is avoided.
Furthermore, the mounting assembly 11 includes a plurality of through holes 72 circumferentially disposed on the lower end surface of the integrated piston rod 7, and the lower end surface of the cylinder 51 is provided with mounting holes 52 corresponding to the through holes 72 one by one.
Preferably, the hinge device 2 comprises connecting pieces 21, the connecting pieces 21 are arranged on the circumferential outer side of the top pressing barrel 1 and are arranged oppositely, the axes of the connecting pieces 21 are vertically crossed, the end parts of the connecting pieces 21 are provided with connecting holes 22, and the connecting pieces 21 on different top pressing barrels 1 are connected pairwise through pin shafts 23 inserted in the connecting holes 22.
Specifically, an oil delivery channel 53 is arranged at the center of the bottom of the cylinder 51, one end of the oil delivery channel 53 is communicated with an oil delivery hole 54 formed at one end of the top pressure cylinder 1, and the other end of the oil delivery channel 53 is communicated with an oil passage formed in the inner wall of the cylinder 51.
In detail, an annular sealing ring 55 for preventing the bottom of the cylinder 51 from falling off under force is arranged between the inner wall of the bottom of the cylinder 51 and the outer wall of the integrated piston rod 7.
Wherein, the upper end surface of the round base 4 is provided with an annular mounting hole 41 for fixing the whole top press along the circumferential direction.
The principle of the embodiment is as follows: the hydraulic oil cylinder 5 on the periphery and the upper portion drives the integrated piston rod 7 to move axially along the guide sleeve body 6 so as to provide a high-pressure environment, when the integrated piston rod 7 with the second spiral groove 71 arranged at the head part below moves axially, the integrated piston rod rolls in the ball accommodating groove 92 by means of the balls 93 so as to drive the spiral sleeve 91 to rotate, and the upper end of the spiral sleeve 91 is connected with a flange through a bolt so as to output torque.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms of the top cylinder 1, the mounting assembly 11, the hinge assembly 2, the connecting member 21, the connecting hole 22, the pin 23, the fixing mechanism 3, the circular tray 31, the triangular support 32, the positioning hole 33, the threaded hole 34, the circular base 4, the annular mounting hole 41, the hydraulic cylinder 5, the cylinder tube 51, the mounting hole 52, the oil delivery passage 53, the oil delivery hole 54, the annular sealing ring 55, the guide sleeve body 6, the end cover 61, the circular hole 611, the fixing hole 612, the integrated piston rod 7, the second spiral groove 71, the through hole 72, the dust seal assembly 8, the piston rod sealing ring 81, the dust ring 82, the guide ring 83, the ball screw drive 9, the screw sleeve 91, the first spiral groove 911, the ball receiving groove 92, and the ball 93 are used more often, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (10)
1. A hexahedron top press capable of realizing high-pressure torsion comprises six top press cylinders (1) which are symmetrical pairwise and coaxially arranged, three axes of the top press cylinders (1) are mutually vertical and intersected at one point, two adjacent top press cylinders (1) are movably connected through a hinge device (2) arranged on the circumferential outer side of the top press cylinders (1), one top press cylinder (1) positioned at the bottom is vertically arranged on a circular base (4) through a fixing mechanism (3), a hydraulic oil cylinder (5) with a cylinder barrel (51) is arranged in an inner cavity of the top press cylinders (1), the hexahedron top press is characterized in that the cylinder barrel (51) is fixed in the top press cylinders (1) through a mounting assembly (11), the cylinder barrel (51) is of a step-type structure, a guide sleeve body (6) which is mutually attached to the step-type structure is arranged on the circumferential inner side of the cylinder barrel (51), and an integrated piston rod (7) capable of axially moving along the guide sleeve body (6), the integrated piston rod (7) is provided with a dustproof sealing assembly (8) at the circumferential outer side and the circumferential inner side of the guide sleeve body (6), and a ball screw transmission device (9) is arranged at one end, away from the circular base (4), of a hydraulic oil cylinder (5) installed on the circular base (4).
2. The hexahedron top press capable of realizing high-pressure torsion according to claim 1, wherein the dustproof sealing assembly (8) comprises a piston rod sealing ring (81), the piston rod sealing ring (81) is circumferentially installed at the lower end of the circumferential contact position of the integrated piston rod (7) and the guide sleeve body (6), a dustproof ring (82) for preventing external dust from entering is circumferentially arranged at the upper end of the circumferential contact position of the integrated piston rod (7) and the guide sleeve body (6), and a guide ring (83) is circumferentially arranged in the middle position of the dustproof ring (82) and the piston rod sealing ring (81).
3. The hexahedral top press capable of realizing high-pressure torsion according to claim 2, characterized in that an end cover (61) is arranged at the upper end of the guide sleeve body (6), a circular hole (611) through which the integrated piston rod (7) can pass is arranged in the middle of the end cover (61), a fixing hole (612) is arranged at the circumferential edge of the end cover (61), and the upper end of the guide sleeve body (6) is fixed with the upper end face of the cylinder barrel (51) through the fixing hole (612) in the end cover (61) and is closed with the upper end of the cylinder barrel (51) through the end cover (61).
4. The hexahedral top press machine capable of realizing high-pressure torsion according to claim 2, wherein the ball screw transmission device (9) comprises a screw sleeve (91), the upper end of the screw sleeve (91) is of a closed structure, a first screw groove (911) is formed in an inner cavity of the screw sleeve, the upper end of the screw sleeve (91) is connected with the end cover (61) through a bolt to output torque, a second screw groove (71) corresponding to the first screw groove (911) is formed in the circumferential outer side of the end part of the integrated piston rod (7), the first screw groove (911) and the second screw groove (71) jointly form a ball accommodating groove (92), and a plurality of balls (93) for preventing the collision between the inner wall of the screw sleeve (91) and the outer wall of the integrated piston rod (7) are arranged in the ball accommodating groove (92).
5. The hexahedral top press capable of realizing high-pressure torsion according to claim 1, 2, 3 or 4, wherein the fixing mechanism (3) comprises a circular tray (31), the circular tray (31) is mounted at the upper end of the circular base (4) through a triangular support member (32), a plurality of positioning holes (33) are formed in the circular tray (31), threaded holes (34) corresponding to the positioning holes (33) are formed in the lower end surface of the top press cylinder (1), and the lower end of the top press cylinder (1) is fixed in the circular tray (31) through bolts.
6. The hexahedral top press machine capable of realizing high-pressure torsion according to claim 5, wherein the mounting assembly (11) comprises a plurality of through holes (72) circumferentially arranged on the lower end surface of the integrated piston rod (7), and the lower end surface of the cylinder barrel (51) is provided with mounting holes (52) corresponding to the through holes (72) one to one.
7. The hexahedral top press machine capable of realizing high-pressure torsion according to claim 5, wherein the hinge device (2) comprises connecting pieces (21), the connecting pieces (21) are arranged on the circumferential outer side of the top press cylinder (1) and are arranged oppositely, the axes of the connecting pieces (21) are vertically crossed, connecting holes (22) are formed in the end parts of the connecting pieces (21), and the connecting pieces (21) on different top press cylinders (1) are connected pairwise through pin shafts (23) inserted in the connecting holes (22).
8. The hexahedral top press machine capable of realizing high-pressure torsion according to claim 5, wherein an oil delivery channel (53) is arranged at the center of the bottom of the cylinder barrel (51), one end of the oil delivery channel (53) is communicated with an oil delivery hole (54) formed at one end of the top press barrel (1), and the other end of the oil delivery channel (53) is communicated with an oil passage formed in the inner wall of the cylinder barrel (51).
9. The hexahedral top press machine capable of realizing high-pressure torsion according to claim 1, characterized in that an annular sealing ring (55) for preventing the bottom of the cylinder barrel (51) from falling off under stress is arranged between the inner wall of the bottom of the cylinder barrel (51) and the outer wall of the integrated piston rod (7).
10. Hexahedral top press machine capable of realizing high-pressure torsion according to claim 5, characterized in that the upper end surface of the circular base (4) is provided with a circumferential ring-shaped mounting hole (41) for fixing the whole top press machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921982289.6U CN211116895U (en) | 2019-11-15 | 2019-11-15 | Hexahedron top press capable of realizing high-pressure torsion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921982289.6U CN211116895U (en) | 2019-11-15 | 2019-11-15 | Hexahedron top press capable of realizing high-pressure torsion |
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| Publication Number | Publication Date |
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| CN211116895U true CN211116895U (en) | 2020-07-28 |
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| CN201921982289.6U Active CN211116895U (en) | 2019-11-15 | 2019-11-15 | Hexahedron top press capable of realizing high-pressure torsion |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115738904A (en) * | 2022-11-04 | 2023-03-07 | 郑州佳睿福新材料科技有限公司 | Final semiconductor diamond production formula and production device thereof |
| CN117482844A (en) * | 2023-12-29 | 2024-02-02 | 河南德申机械设备有限公司 | Hexahedral top press assembly device |
| CN117504722A (en) * | 2023-11-16 | 2024-02-06 | 江苏大隆凯科技有限公司 | Forging type hexahedral top press |
-
2019
- 2019-11-15 CN CN201921982289.6U patent/CN211116895U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115738904A (en) * | 2022-11-04 | 2023-03-07 | 郑州佳睿福新材料科技有限公司 | Final semiconductor diamond production formula and production device thereof |
| CN115738904B (en) * | 2022-11-04 | 2023-08-18 | 佳睿福钻石(河南)有限公司 | Formula and device for producing ultimate semiconductor diamond |
| CN117504722A (en) * | 2023-11-16 | 2024-02-06 | 江苏大隆凯科技有限公司 | Forging type hexahedral top press |
| CN117482844A (en) * | 2023-12-29 | 2024-02-02 | 河南德申机械设备有限公司 | Hexahedral top press assembly device |
| CN117482844B (en) * | 2023-12-29 | 2024-04-02 | 河南德申机械设备有限公司 | Hexahedral top press assembly device |
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Denomination of utility model: Hexahedral jacking press capable of realizing High-Pressure Torsion Effective date of registration: 20220329 Granted publication date: 20200728 Pledgee: Agricultural Bank of China Limited by Share Ltd. South Lake branch Pledgor: Zhejiang aobamei new materials Co.,Ltd. Registration number: Y2022330000422 |