CN107097037B - High-voltage pulse current repair experiment platform and application method thereof - Google Patents
High-voltage pulse current repair experiment platform and application method thereof Download PDFInfo
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- CN107097037B CN107097037B CN201710389818.0A CN201710389818A CN107097037B CN 107097037 B CN107097037 B CN 107097037B CN 201710389818 A CN201710389818 A CN 201710389818A CN 107097037 B CN107097037 B CN 107097037B
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- 230000008439 repair process Effects 0.000 title claims abstract description 16
- 238000002474 experimental method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 64
- 238000012360 testing method Methods 0.000 claims abstract description 53
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 230000001808 coupling effect Effects 0.000 claims abstract description 8
- 230000007547 defect Effects 0.000 claims description 8
- 238000011160 research Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000008263 repair mechanism Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000000306 component Substances 0.000 description 22
- 238000011161 development Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000008358 core component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a high-voltage pulse current repair experiment platform and a use method thereof, wherein the high-voltage pulse current repair experiment platform comprises a fixed bracket, a first polished rod and a second polished rod, and a first sliding block and a second sliding block are sleeved on the first polished rod and the second polished rod in sequence; the first sliding blocks of the first and second polished rods are respectively connected with the first square block piece through U-shaped steel; the second sliding blocks of the first and second polished rods are respectively connected with a second square block piece through L-shaped steel; a force sensor is connected between the first square block and the second square block; the pulse current generator is connected with the first clamping piece and the second clamping piece; the first clamping piece is fixed on the fixed bracket, and the second clamping piece is fixedly connected with the first sliding block; the second square block is driven by a driving mechanism to move transversely along the first and second polish rods. The invention has the beneficial effects that: and quantitatively loading the test metal component, simultaneously applying high-voltage pulse current, realizing the coupling effect of force-pulse current, and repairing the metal component.
Description
Technical Field
The invention relates to high-voltage pulse current repair research of a metal component containing defects, in particular to a high-voltage pulse current repair experiment platform under the coupling effect of force and pulse current and a use method thereof.
Background
The remanufacturing engineering is guided by the whole life cycle theory of the electromechanical product, aims at realizing the performance crossing type improvement of old parts, and aims at achieving the criteria of high quality, high efficiency, energy conservation, material conservation and environmental protection, thereby being an effective way for realizing energy conservation and emission reduction and promoting the development of circular economy. In a large situation where the environment and resources are a focus of social development, there is a great deal of attention in manufacturing engineering. Under the new policy background, the manufacturing industry becomes a recycling, green and environment-friendly sustainable emerging industry. Some core components of heavy mechanical equipment are expensive, have high added value, and if cracks, particularly buried cracks, occur in the manufacturing process, are irreparable in the past, the core components are scrapped, and huge waste is caused. Therefore, the remanufacturing of the product and the repair of crack defects are extremely critical steps, and only the crack propagation is prevented, the safe operation of the mechanical product can be ensured, and the development life of the mechanical product is prolonged.
For the repair of buried cracks, which is difficult, pulse current crack arrest is a better method at present, and a great deal of research is carried out at home and abroad. Research shows that the crack arrest of the metal component crack can be realized by a pulse current method, but the crack arrest of the metal component containing the crack also has the problems of undefined metal crack arrest mechanism and the like under the action of stress.
Disclosure of Invention
Aiming at the defects, the invention provides a high-voltage pulse current repair experiment platform and a use method thereof, and the repair research of the metal component containing the defects is realized.
The invention solves the technical problems by adopting the scheme that: the high-voltage pulse current repairing experiment platform comprises a fixed support, a first polished rod and a second polished rod which are transversely erected in front of and behind the fixed support, wherein two ends of the first polished rod and two ends of the second polished rod are respectively fixed on the fixed support; a first sliding block and a second sliding block are sleeved on the first polished rod and the second polished rod in sequence; the first sliding blocks of the first polish rod and the second polish rod are respectively connected with a first square block piece through a U-shaped steel; the second sliding blocks of the first polish rod and the second polish rod are respectively connected with a second square block piece through L-shaped steel; a force sensor is connected between the first square block piece and the second square block piece; the device further comprises a first clamping piece and a second clamping piece which are used for clamping the test metal component, and the first clamping piece and the second clamping piece are connected with the pulse current generator; the first clamping piece is fixed on the fixed bracket, and the second clamping piece is fixedly connected with the first sliding block; the second square block piece is driven by a driving mechanism to transversely move along the first polish rod and the second polish rod.
Further, the driving mechanism comprises a first screw rod, a second screw rod and a hydraulic driving rod, wherein the first screw rod and the second screw rod are transversely arranged; the first screw rod and the second screw rod are respectively movably sleeved on the first screw rod fixing seat and the second screw rod fixing seat, and the first screw rod and the second screw rod are driven by the hydraulic driving rod to respectively move transversely along the first screw rod fixing seat and the second screw rod fixing seat; the second square block piece is detachably fixed at one end of the first screw rod and one end of the second screw rod; the other ends of the first screw rod and the second screw rod are detachably fixed with a third square block piece.
Further, the second square block piece and the third square block piece are respectively fixed on the first screw rod and the second screw rod through nuts, and the nuts are in fit and threaded connection with the first screw rod and the second screw rod.
Further, the first screw rod fixing seat and the second screw rod fixing seat are further fixed on the fixing support through a connecting block.
Further, the hydraulic driving rod is fixed on the connecting block, and an output shaft of the hydraulic driving rod is arranged opposite to the second square block piece and the third square block piece and is used for driving the second square block piece or the third square block piece.
Further, one end of the force sensor is connected with the first square block, the other end of the force sensor is connected with the second square block, the signal output end of the force sensor is electrically connected with a control unit, and the control unit is also electrically connected with a display module.
Further, the control unit is a single chip microcomputer, the display module is an LCD display screen, and the LCD display screen is arranged on the fixed support.
Further, the outer surfaces of the first clamping piece and the second clamping piece are coated with insulating sleeves.
The invention also provides a use method of the high-voltage pulse current repair experiment platform, which comprises the following steps:
step S1: according to the length of the test metal component, the second square block piece or the third square block piece is driven by the hydraulic driving rod, and the lengths of the first clamping piece and the second clamping piece are adjusted;
s2, clamping the test metal member on the first clamping piece and the second clamping piece;
step S3: the hydraulic driving rod drives the third square block piece to realize the stretching of the test metal component; or the second square block is driven by the hydraulic driving rod, so that the compression of the test metal component is realized, and the loading force applied to the test metal component is obtained by the force sensor;
step S4: simultaneously, high-voltage pulse current is applied to the test metal component for repairing, and a loop is formed by the first clamping piece, the test metal mechanism, the second clamping piece and the high-voltage pulse current transmitter;
step S5: by adjusting the high-voltage pulse current value applied to the test metal component and quantitatively adjusting the loading force applied to the test metal component; recording the repair conditions of the test metal components under different high-voltage pulse current values and loading forces.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, a novel experimental platform is designed to realize the coupling effect of force-pulse current, and a crack-stopping experiment of pulse current is realized under the effect of adjustable stress, so that the crack-stopping mechanism of a metal member under the coupling effect of force-pulse current is revealed.
According to the invention, the test metal component is fixed through the first clamping piece and the second clamping piece, high-voltage pulse current is simultaneously introduced, and an adjustable load can be applied to the test metal component in the axial direction through the driving mechanism, and the load can be transmitted to an external LCD display screen through the force sensor for reading. The experimental platform provided by the invention realizes the force-pulse current coupling effect on the experimental metal component, and simultaneously meets the requirement on quantitative loading of the load.
Drawings
The patent of the invention is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an experimental platform in a pull-up test of a metal member according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an experimental platform for testing a metal member under compression according to an embodiment of the present invention.
Fig. 3 is a front view of an experimental platform according to an embodiment of the present invention.
In the figure:
1-fixing a bracket; 2-a first polish rod; 3-a second polish rod; 4-a first slider; 5-a second slider; 6-U-shaped steel; 7-L-shaped steel; 8-a first square block; 9-a second square block; 10-a third square block; 11-a first clamping member; 12-a second clamping member; 13-a first screw rod; 14-a second screw rod; 15-connecting blocks; 16-a hydraulic drive lever; 17-test metal component; 18-force sensor.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
As shown in fig. 1-2, the high-voltage pulse current repairing experiment platform of the embodiment comprises a fixed bracket 1, a first polish rod 2 and a second polish rod 3 which are transversely erected in front of and behind the fixed bracket 1, wherein two ends of the first polish rod 2 and the second polish rod 3 are respectively fixed on the fixed bracket 1; a first sliding block 4 and a second sliding block 5 are sleeved on the first polished rod 2 and the second polished rod 3 in sequence; the first sliding blocks 4 of the first polish rod 2 and the second polish rod 3 are respectively connected with a first square block piece 8 through a U-shaped steel 6; the second sliding blocks 5 of the first polish rod 2 and the second polish rod 3 are respectively connected with a second square block 9 through an L-shaped steel 7; a force sensor 18 is connected between the first square block 8 and the second square block 9; the device further comprises a first clamping piece 11 and a second clamping piece 12 for clamping the test metal member 17, wherein the first clamping piece 11 and the second clamping piece 12 are connected with a pulse current generator; the first clamping piece 11 is fixed on the fixed bracket 1, and the second clamping piece 12 is fixedly connected with the first sliding block 4; the second square block 9 is driven by a driving mechanism to move transversely along the first polish rod 2 and the second polish rod 3.
From the above, the beneficial effects of the invention are as follows: the second square block piece 9 is driven to transversely move through the driving mechanism, the second square block piece 9 is connected with the first square block piece 8 through the force sensor 18, the first square block piece 8 drives the second clamping piece 12 to transversely move, the effect that under the condition that the test metal component 17 is quantitatively loaded with tensile stress or compressive stress, high-voltage pulse current is simultaneously applied to the test metal component 17 is achieved, the coupling effect of force-pulse current is achieved, and the defect repairing mechanism research of the metal component containing defects under the stress condition can be conveniently, quickly and efficiently carried out.
In this embodiment, the driving mechanism comprises two first screw rods 13 and second screw rods 14 which are transversely arranged, and a hydraulic driving rod 16; the first screw rod 13 and the second screw rod 14 are respectively movably sleeved on the first screw rod fixing seat and the second screw rod fixing seat, and the first screw rod 13 and the second screw rod 14 are driven by the hydraulic driving rod 16 to respectively move transversely along the first screw rod fixing seat and the second screw rod fixing seat; the second square block 9 is detachably fixed at one end of the first screw rod 13 and one end of the second screw rod 14; the other ends of the first screw rod 13 and the second screw rod 14 are detachably fixed with a third square block 10. The first screw rod fixing seat and the second screw rod fixing seat are internally provided with bearings matched with the first screw rod 13 and the second screw rod 14, friction force is reduced, the first screw rod 13 and the second screw rod 14 respectively slide along the first screw rod fixing seat and the second screw rod fixing seat under the drive of the hydraulic drive rod 16, the second square block piece 9 is fixedly connected with the first screw rod 13 and the second screw rod 14, and the second square block piece 9 is driven to move along the first polish rod 2 and the second polish rod 3 through the transverse movement of the first screw rod 13 and the second screw rod 14, so that the test metal component 17 is stretched or compressed.
In this embodiment, the second square block 9 and the third square block 10 are fixed on the first screw rod 13 and the second screw rod 14 respectively through nuts, and the nuts are in threaded connection with the first screw rod 13 and the second screw rod 14 in a matching manner. The second square block 9 and the third square block 10 are locked on the first screw rod 13 and the second screw rod 14 through nuts, and the second square block 9 and the third square block 10 are driven by the hydraulic driving rod 16 to move the first screw rod 13 and the second screw rod 14.
In this embodiment, the first screw fixing base and the second screw fixing base are further fixed to the fixing bracket 1 via a connecting block 15.
In this embodiment, the hydraulic driving rod 16 is fixed on the connecting block 15, and an output shaft of the hydraulic driving rod 16 is disposed opposite to the second square block 9 and the third square block 10, so as to drive the second square block 9 or the third square block 10. As shown in fig. 1, if the test metal member 17 is to be stretched, a hydraulic driving rod 16 is fixed to the right side of the connection block 15 for driving the third square block 10 to move rightward, thereby stretching the test metal member 17; as shown in fig. 2, when the test metal member 17 is compressed, a hydraulic driving rod 16 is fixed to the left side of the connection block 15 for driving the second square block 9 to move leftwards, thereby compressing the test metal member 17.
In this embodiment, one end of the force sensor 18 is connected to the first square block 8, the other end is connected to the second square block 9, and the signal output end of the force sensor 18 is electrically connected to a control unit, and the control unit is further electrically connected to a display module. The force sensor 18 measures the loading force of the driving mechanism and the display module displays the loading force.
In this embodiment, the control unit is a single-chip microcomputer, the display module is an LCD display screen, and the LCD display screen is disposed on the fixing support 1.
In this embodiment, the outer surfaces of the first clamping member 11 and the second clamping member 12 are covered with an insulating sleeve. The fixing bracket 1, the first clamping piece 11 and the second clamping piece 12 are subjected to high-voltage insulation treatment, and can bear the high-voltage pulse current within 30 kV without current leakage.
The invention also provides a use method of the high-voltage pulse current repair experiment platform, which comprises the following steps:
step S1: according to the length of the test metal member 17, the second square block 9 or the third square block 10 is driven by the hydraulic driving rod 16, and the lengths of the first clamping piece 11 and the second clamping piece 12 are adjusted;
step S2, clamping the test metal member 17 on the first clamping piece 11 and the second clamping piece 12;
step S3: the third square block 10 is driven by the hydraulic driving rod 16, so that the stretching of the test metal member 17 is realized; or the second square block 9 is driven by the hydraulic driving rod 16 to compress the test metal member 17, and the loading force applied to the test metal member 17 is obtained by the force sensor 18;
step S4: simultaneously, high-voltage pulse current is applied to the test metal member 17 for repairing, and the first clamping piece 11, the test metal mechanism, the second clamping piece 12 and the high-voltage pulse current transmitter form a loop;
step S5: by adjusting the value of the high-voltage pulse current applied to the test metal member 17, and quantitatively adjusting the loading force received by the test metal member 17; the repair status of the test metal member 17 under different high-voltage pulse current values and loading forces was recorded.
In summary, the high-voltage pulse current repairing experiment platform and the application method thereof provided by the invention have the advantages that the structure is simple, and the operation method realizes the repairing of the metal component through the coupling effect of force and pulse current.
While the foregoing is directed to the preferred embodiment, other and further embodiments of the invention will be apparent to those skilled in the art from the following description, wherein the invention is described, by way of illustration and example only, and it is intended that the invention not be limited to the specific embodiments illustrated and described, but that the invention is to be limited to the specific embodiments illustrated and described.
Claims (1)
1. The utility model provides a high-voltage pulse current repair experiment platform which characterized in that: the device comprises a fixed bracket, a first polish rod and a second polish rod which are transversely erected in front of and behind the fixed bracket, wherein two ends of the first polish rod and two ends of the second polish rod are respectively fixed on the fixed bracket; a first sliding block and a second sliding block are sleeved on the first polished rod and the second polished rod in sequence; the first sliding blocks of the first polish rod and the second polish rod are respectively connected with a first square block piece through a U-shaped steel; the second sliding blocks of the first polish rod and the second polish rod are respectively connected with a second square block piece through L-shaped steel; a force sensor is connected between the first square block piece and the second square block piece; the device further comprises a first clamping piece and a second clamping piece which are used for clamping the test metal component, and the first clamping piece and the second clamping piece are connected with the pulse current generator; the first clamping piece is fixed on the fixed bracket, and the second clamping piece is fixedly connected with the first sliding block; the second square block piece is driven by a driving mechanism to transversely move along the first polish rod and the second polish rod;
the driving mechanism drives the second square block piece to transversely move, the second square block piece is connected with the first square block piece through the force sensor, and the first square block piece drives the second clamping piece to transversely move, so that under the condition of quantitatively loading tensile stress or compressive stress on the test metal component, high-voltage pulse current is simultaneously applied to the test metal component, and the coupling effect of force-pulse current is realized, so that the defect repair mechanism research of the defect-containing metal component under the stress condition can be conveniently, quickly and efficiently carried out;
the driving mechanism comprises a first screw rod, a second screw rod and a hydraulic driving rod, wherein the first screw rod and the second screw rod are transversely arranged; the first screw rod and the second screw rod are respectively movably sleeved on the first screw rod fixing seat and the second screw rod fixing seat, and the first screw rod and the second screw rod are driven by the hydraulic driving rod to respectively move transversely along the first screw rod fixing seat and the second screw rod fixing seat; the second square block piece is detachably fixed at one end of the first screw rod and one end of the second screw rod; the other ends of the first screw rod and the second screw rod are detachably fixed with a third square block piece;
bearings matched with the first screw rod and the second screw rod are arranged in the first screw rod fixing seat and the second screw rod fixing seat, friction force is reduced, the first screw rod and the second screw rod respectively slide along the first screw rod fixing seat and the second screw rod fixing seat under the drive of the hydraulic driving rod, the second square block piece is fixedly connected with the first screw rod and the second screw rod, and the second square block piece is driven to move along the first polished rod and the second polished rod through the transverse movement of the first screw rod and the second screw rod, so that the test metal component is stretched or compressed;
the second square block piece and the third square block piece are respectively fixed on the first screw rod and the second screw rod through nuts, and the nuts are in fit and threaded connection with the first screw rod and the second screw rod;
the second square block piece and the third square block piece are locked on the first screw rod and the second screw rod through nuts, and the second square block piece and the third square block piece are driven by the hydraulic driving rod to realize movement of the first screw rod and the second screw rod;
the first screw rod fixing seat and the second screw rod fixing seat are also fixed on the fixing bracket through a connecting block;
the hydraulic driving rod is fixed on the connecting block, and an output shaft of the hydraulic driving rod is arranged opposite to the second square block piece and the third square block piece and is used for driving the second square block piece or the third square block piece;
if the test metal member is to be stretched, a hydraulic driving rod is fixed on the right side of the connecting block and used for driving the third square block to move rightwards, so that the test metal member is stretched;
if the test metal component is to be compressed, fixing a hydraulic driving rod on the left side of the connecting block for driving the second square block to move leftwards, so as to compress the test metal component;
one end of the force sensor is connected with the first square block, the other end of the force sensor is connected with the second square block, the signal output end of the force sensor is electrically connected with a control unit, and the control unit is also electrically connected with a display module;
the control unit is a singlechip, the display module is an LCD display screen, and the LCD display screen is arranged on the fixed bracket;
the outer surfaces of the first clamping piece and the second clamping piece are coated with insulating sleeves, so that the high-voltage pulse current within 30 kV can be born without current leakage;
the application method comprises the following steps:
step S1: according to the length of the test metal component, the second square block piece or the third square block piece is driven by the hydraulic driving rod, and the lengths of the first clamping piece and the second clamping piece are adjusted;
s2, clamping the test metal member on the first clamping piece and the second clamping piece;
step S3: the hydraulic driving rod drives the third square block piece to realize the stretching of the test metal component; or the second square block is driven by the hydraulic driving rod, so that the compression of the test metal component is realized, and the loading force applied to the test metal component is obtained by the force sensor;
step S4: simultaneously, high-voltage pulse current is applied to the test metal component for repairing, and a loop is formed by the first clamping piece, the test metal mechanism, the second clamping piece and the high-voltage pulse current transmitter;
step S5: by adjusting the high-voltage pulse current value applied to the test metal component and quantitatively adjusting the loading force applied to the test metal component; recording the repair conditions of the test metal components under different high-voltage pulse current values and loading forces.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389818.0A CN107097037B (en) | 2017-05-27 | 2017-05-27 | High-voltage pulse current repair experiment platform and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710389818.0A CN107097037B (en) | 2017-05-27 | 2017-05-27 | High-voltage pulse current repair experiment platform and application method thereof |
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| CN107097037A CN107097037A (en) | 2017-08-29 |
| CN107097037B true CN107097037B (en) | 2023-08-11 |
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| JP2003166404A (en) * | 2001-11-30 | 2003-06-13 | Suwa Netsukogyo Kk | Manufacturing method and repairing method of turbine blade |
| CN102519716A (en) * | 2011-12-02 | 2012-06-27 | 西北工业大学 | Test stand for performance of linear electromechanical actuator |
| CN102654432A (en) * | 2012-04-25 | 2012-09-05 | 上海交通大学 | Test table for five-function test of driving shaft assembly of constant velocity universal joint |
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| CN103698116A (en) * | 2013-12-13 | 2014-04-02 | 西北工业大学 | Spring-loaded performance test experiment table for linear electro-mechanical actuator |
| CN104439887A (en) * | 2014-12-15 | 2015-03-25 | 大连理工大学 | Metal part internal crack repairing method |
| CN104483198A (en) * | 2014-12-29 | 2015-04-01 | 东南大学 | Constant-speed expansion test experiment table for periodontal membrane in orthodontics |
| CN206854933U (en) * | 2017-05-27 | 2018-01-09 | 福州大学 | A kind of high-voltage pulse current reparative experiment platform |
-
2017
- 2017-05-27 CN CN201710389818.0A patent/CN107097037B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003166404A (en) * | 2001-11-30 | 2003-06-13 | Suwa Netsukogyo Kk | Manufacturing method and repairing method of turbine blade |
| CN102519716A (en) * | 2011-12-02 | 2012-06-27 | 西北工业大学 | Test stand for performance of linear electromechanical actuator |
| CN102654432A (en) * | 2012-04-25 | 2012-09-05 | 上海交通大学 | Test table for five-function test of driving shaft assembly of constant velocity universal joint |
| CN103616176A (en) * | 2013-12-12 | 2014-03-05 | 上海瑞纽机械装备制造有限公司 | Damper valve-closing performance testing platform and testing method thereof |
| CN103698116A (en) * | 2013-12-13 | 2014-04-02 | 西北工业大学 | Spring-loaded performance test experiment table for linear electro-mechanical actuator |
| CN104439887A (en) * | 2014-12-15 | 2015-03-25 | 大连理工大学 | Metal part internal crack repairing method |
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| CN206854933U (en) * | 2017-05-27 | 2018-01-09 | 福州大学 | A kind of high-voltage pulse current reparative experiment platform |
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| CN107097037A (en) | 2017-08-29 |
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Application publication date: 20170829 Assignee: Fuzhou Fukang Pharmaceutical Technology Co.,Ltd. Assignor: FUZHOU University Contract record no.: X2023980053347 Denomination of invention: A high-voltage pulse current repair experimental platform and its usage method Granted publication date: 20230811 License type: Common License Record date: 20240103 |