CN108251634B - System for be used for little sample surface laser shock peening - Google Patents
System for be used for little sample surface laser shock peening Download PDFInfo
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- CN108251634B CN108251634B CN201810336606.0A CN201810336606A CN108251634B CN 108251634 B CN108251634 B CN 108251634B CN 201810336606 A CN201810336606 A CN 201810336606A CN 108251634 B CN108251634 B CN 108251634B
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- 230000035939 shock Effects 0.000 title claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 230000001360 synchronised effect Effects 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000005728 strengthening Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
- C21D10/005—Modifying the physical properties by methods other than heat treatment or deformation by laser shock processing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Sampling And Sample Adjustment (AREA)
- Microscoopes, Condenser (AREA)
Abstract
The invention discloses a system for laser shock peening of the surface of a small sample, which is characterized in that: the device comprises a small sample clamp, a movable pressing mechanism and a laser impact mechanism, wherein the small sample clamp comprises a bottom plate and two L-shaped side plates on two sides, the movable pressing mechanism comprises a door-shaped support, a track, a sliding block a, a lead screw support a, a lead screw driving motor a and a nut a, one end of each of the two lead screws a is provided with a synchronous wheel, the two synchronous wheels are connected through a synchronous belt, the two door-shaped supports are fixedly connected through a connecting rod, a plurality of pressing mechanisms are arranged on the two door-shaped supports, and the laser impact mechanism is arranged right above the small sample clamp. The invention automatically strengthens the laser of the small sample and solves the problem of fixing the small sample.
Description
Technical Field
The invention relates to a laser shock peening system, in particular to a system for laser shock peening of the surface of a small sample.
Background
The laser shock strengthening technology is a high and new technology for improving the anti-fatigue, wear-resistant and corrosion-resistant capacities of metal materials by utilizing plasma shock waves generated by strong laser beams. The method has the outstanding advantages of non-contact, no heat affected zone, strong controllability, obvious strengthening effect and the like. The coating mainly protects the workpiece from being burnt by laser and enhances the absorption of laser energy, and the coating materials commonly used at present are black paint, aluminum foil and the like. The confinement layer can not only confine the expansion of the plasma so as to improve the peak pressure of the shock wave, but also prolong the action time of the shock wave by reflecting the shock wave, and the confinement layer commonly used at present is running water and K9 glass.
At present, when the laser shock strengthening of the surface of a small sample is carried out, the existing clamp is clamped through two sides, but the small sample is still bounced off the clamp due to the fact that the laser shock force is relatively large, so that the small sample needs to be placed again by suspending the shock, the efficiency is low, and the strengthening effect is very poor.
Disclosure of Invention
The invention aims to solve the technical problem of providing a system for laser shock peening of the surface of a small sample, which automatically performs laser peening on the small sample and solves the problem of fixing the small sample.
In order to solve the technical problems, the invention adopts the following technical scheme:
a system for laser shock peening of a surface of a small sample, characterized by: the device comprises a small sample clamp, a movable pressing mechanism and a laser impact mechanism, wherein the small sample clamp comprises a bottom plate and two L-shaped side plates, the two L-shaped side plates are oppositely arranged on two sides of the bottom plate, the bottom plate is horizontally arranged on the upper sides of the two L-shaped side plates and supported by the two L-shaped side plates, the movable pressing mechanism comprises a door-shaped bracket, a track, a sliding block a, a screw bracket a, a screw driving motor a and a nut a, the two door-shaped brackets are sleeved outside the two L-shaped side plates and are arranged in parallel front of and behind the two door-shaped brackets, the door-shaped bracket is slidably arranged on the two L-shaped side plates and can slide along the L-shaped side plates, the two tracks are arranged in parallel and are respectively fixed on the lower sides of the two L-shaped side plates, the sliding block a is fixedly arranged at the lower ends of the door-shaped bracket, the two groups of the screw bracket a are respectively fixed at the two ends of the lower sides of the one L-shaped side plate, the two ends of the screw a are rotatably arranged on one group of the screw bracket a, the nut a is sleeved on the screw a and is in threaded connection with the screw a, one end of the screw driving motor a is connected with the screw a through the screw a screw driving motor a, one end is driven by the screw driving motor a, one end is provided with one end of the synchronizing wheel a is connected with one end of the synchronizing wheel a and the synchronizing wheel a is connected with the two laser impact mechanism through the two synchronous wheels through the connecting rods, and the two synchronous belts are fixedly arranged on the door-shaped clamp.
Further, the door-type support contains crossbeam and two vertical supports, and the crossbeam level sets up in both sides L type curb plate top, and two vertical supports set up in both sides L type curb plate lateral surface along vertical direction, and the upper end and the crossbeam one end fixed connection of every vertical support.
Further, the pressing mechanism is arranged on the lower side surface of the cross beam.
Further, the plurality of pressing mechanisms are divided into two groups, and each group of pressing mechanisms comprises one or more pressing mechanisms.
Further, hold-down mechanism contains and compresses tightly roller, slide rod, sleeve and spring, compresses tightly the roller level setting and the both ends rotation setting of compressing tightly the roller is in two slide rod lower extreme, and the slide rod is vertical to be set up and the slide rod upper end is provided with the cylinder stopper, and open in the sleeve has the blind hole that matches with the cylinder stopper, slide rod upper end cylinder stopper slide set up in the sleeve blind hole and can freely slide along vertical direction, the spring setting is in the blind hole and the spring upper end is fixed in the blind hole upper end, the spring lower extreme is fixed in cylinder stopper upper end.
Further, the both ends of little sample anchor clamps still are provided with tip fixture, and tip fixture contains V type clamping piece and electric putter, and two V type clamping pieces set up respectively at the bottom plate both ends of little sample anchor clamps, and V type clamping piece middle part articulates in bottom plate end downside, and electric putter both ends are articulated with the lower extreme of two V type clamping pieces respectively.
Further, the laser impact mechanism comprises a screw rod b, a slide rod b, a screw rod support b, a nut b, a screw rod driving motor b, a screw rod c, a screw rod support c, a slide rod c, a nut c, a slide block c and a screw rod driving motor c, wherein the two slide rod b are arranged in parallel and fixed on the screw rod support b on two sides, the screw rod b is arranged between the two slide rod b in parallel and the two ends of the screw rod b are rotatably arranged on the screw rod support b, one end of the screw rod b is connected with the screw rod driving motor b and driven by the screw rod driving motor b, the nut b is sleeved on the screw rod b and is in threaded connection with the screw rod b, the screw rod support c is sleeved on the two slide rod b and can slide freely along the slide rod b, the nut b is fixedly connected with the screw rod support c, the two slide rod c is perpendicular to the slide rod b and fixed on two sides of the screw rod support c, the screw rod c is parallel to the slide rod c and the two ends of the slide rod c are rotatably arranged on the screw rod support c, one end of the screw rod c is connected with the screw rod driving motor c and is driven by the screw rod c, the nut c is sleeved on the screw rod c and is capable of being connected with the slide rod c along the slide rod b and can slide freely slide along the slide rod b.
Compared with the prior art, the invention has the following advantages and effects: the system for laser shock peening of the surface of the small sample compresses the sample being shock-strengthened through the compressing mechanism on the sliding door-shaped support, so that the small sample is prevented from being separated from the clamp, the door-shaped support changes position along with the change of the laser position, laser always irradiates between the two door-shaped supports, the stability of clamping is ensured, and then the laser shock mechanism and the door frame synchronously move to complete shock peening in a whole-course automatic mode.
Drawings
FIG. 1 is a schematic diagram of a system for laser shock peening a surface of a small sample in accordance with the present invention.
Fig. 2 is a side view of a system for laser shock peening a surface of a small sample according to the present invention.
Fig. 3 is a schematic view of the hold down mechanism of the present invention.
Fig. 4 is a schematic view of the end clamp mechanism of the present invention.
Fig. 5 is a schematic view of a laser shock mechanism of the present invention.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and not limited to the following examples.
As shown in the figure, a system for laser shock peening of the surface of a small sample comprises a small sample clamp, a movable hold-down mechanism and a laser shock mechanism, wherein the small sample clamp comprises a bottom plate 1 and two L-shaped side plates 2, the two L-shaped side plates 2 are oppositely arranged on two sides of the bottom plate 1, the bottom plate 1 is horizontally arranged on the upper sides of the bottom edges of the two L-shaped side plates 2 and supported by the two L-shaped side plates 2, the movable hold-down mechanism comprises a door-type bracket 3, a track 4, a sliding block a5, a screw a6, a screw bracket a7, a screw driving motor a8 and a nut a9, the two door-type brackets 3 are sleeved outside the two L-shaped side plates 2 and are arranged in a front-back side-by-side manner, the door-type brackets 3 are slidably arranged on the two L-shaped side plates 2 and can slide back along the L-shaped side plates 2, two tracks 4 are arranged in parallel and fixed on the lower sides of the L-shaped side plates 2 on two sides respectively, a sliding block a5 is arranged on the tracks 4 in a sliding mode, the sliding block a5 is fixed at the lower ends of the door-shaped supports 3, two groups of screw supports a7 are fixed on two ends of the lower side of the L-shaped side plate 2 on one side respectively, two ends of a screw a6 are rotatably arranged on one group of screw supports a7, a nut a9 is sleeved on the screw a6 and is in threaded connection with the screw a6, one end of the screw a6 is connected with a screw driving motor a8 and driven by the screw driving motor a8, one ends of the two screws a6 are provided with synchronous wheels 10, the two synchronous wheels 10 are connected through a synchronous belt 11, the two door-shaped supports 3 are fixedly connected through a connecting rod 12, a plurality of pressing mechanisms 13 are arranged on the two door-shaped supports 3, and a laser impact mechanism is arranged right above a small sample clamp.
The door-type bracket 3 comprises a cross beam 14 and two vertical brackets 15, wherein the cross beam 14 is horizontally arranged above the L-shaped side plates 2 on two sides, the two vertical brackets 15 are arranged on the outer side surfaces of the L-shaped side plates 2 on two sides along the vertical direction, and the upper end of each vertical bracket 15 is fixedly connected with one end of the cross beam 14.
The hold-down mechanism 13 is arranged on the underside of the cross beam 14. The plurality of pressing mechanisms 13 are divided into two groups, and each group of pressing mechanisms 13 comprises one or more pressing mechanisms. The compressing mechanism 13 comprises a compressing roller shaft 16, sliding rods 17, sleeves 18 and springs 19, wherein the compressing roller shaft 16 is horizontally arranged, two ends of the compressing roller shaft 16 are rotatably arranged at the lower ends of the two sliding rods 17, the sliding rods 17 are vertically arranged, cylindrical limiting blocks 20 are arranged at the upper ends of the sliding rods 17, blind holes 21 matched with the cylindrical limiting blocks 20 are formed in the sleeves 18, the cylindrical limiting blocks 20 at the upper ends of the sliding rods 17 are slidably arranged in the blind holes 21 of the sleeves 18 and can freely slide along the vertical direction, the springs 19 are arranged in the blind holes 21, the upper ends of the springs 19 are fixed at the upper ends of the blind holes 21, and the lower ends of the springs 19 are fixed at the upper ends of the cylindrical limiting blocks 20.
The both ends of little sample anchor clamps still are provided with tip fixture, and tip fixture contains V type clamping piece 22 and electric putter 23, and two V type clamping pieces 22 set up respectively at the bottom plate 1 both ends of little sample anchor clamps, and V type clamping piece 22 middle part articulates in bottom plate 1 tip downside, and electric putter 23 both ends are articulated with the lower extreme of two V type clamping pieces 22 respectively.
The laser impact mechanism comprises a lead screw b24, a slide rod b25, a lead screw support b26, a nut b27, a lead screw driving motor b28, a lead screw c29, a lead screw support c30, a slide rod c31, a nut c, a slide block c32 and a lead screw driving motor c33, wherein the two slide rods b25 are arranged in parallel and fixed on the lead screw support b26 on two sides, the lead screw b24 is arranged between the two slide rods b25 in parallel with the slide rod b25 and the two ends of the lead screw b24 are rotatably arranged on the lead screw support b26, one end of the lead screw b24 is connected with the lead screw driving motor b28 and driven by the lead screw driving motor b28, the nut b27 is sleeved on the lead screw b24 and is in threaded connection with the lead screw b24, the lead screw support c30 is sleeved on the two slide rods b25 and can slide freely along the slide rod b25, the nut b27 is fixedly connected with the lead screw support c26, the two slide rods c31 are arranged perpendicular to the slide rod b25 and are fixed on two sides of the lead screw support c30, the lead screw c29 is arranged between the two slide rods c31 in parallel with the slide rod c31 and the two ends of the slide rod c29 are rotatably arranged on the lead screw support c31, one end of the lead screw c29 is rotatably connected with the lead screw driving motor c29 and the lead screw driving motor c is in threaded connection with the lead screw driving motor c29 and the lead screw c 33.
The system for laser shock peening of the surface of the small sample compresses the sample being shock-strengthened through the compressing mechanism on the sliding door-shaped support, so that the small sample is prevented from being separated from the clamp, the door-shaped support changes position along with the change of the laser position, laser always irradiates between the two door-shaped supports, the stability of clamping is ensured, and then the laser shock mechanism and the door frame synchronously move to complete shock peening in a whole-course automatic mode.
The foregoing description of the invention is merely exemplary of the invention. Various modifications or additions to the described embodiments may be made by those skilled in the art to which the invention pertains or in a similar manner, without departing from the spirit of the invention or beyond the scope of the invention as defined in the appended claims.
Claims (5)
1. A system for laser shock peening of a surface of a small sample, characterized by: the small sample clamp comprises a bottom plate and two L-shaped side plates, the two L-shaped side plates are oppositely arranged on two sides of the bottom plate, the bottom plate is horizontally arranged on the upper sides of the bottom edges of the two L-shaped side plates and supported by the two L-shaped side plates, the movable compression mechanism comprises a door-shaped bracket, a track, a slide block a, a screw rod bracket a, a screw rod driving motor a and a nut a, the two door-shaped brackets are sleeved on the outer sides of the two L-shaped side plates and are arranged in parallel front and back, the door-shaped brackets are slidably arranged on the two L-shaped side plates and can slide back and forth along the L-shaped side plates, the two tracks are arranged in parallel and are respectively fixed on the lower sides of the two L-shaped side plates, the slide block a is slidably arranged on the track and is fixed at the lower ends of the two screw rod brackets, the two screw rod brackets a are respectively fixed at the two ends of the lower sides of the one L-shaped side plate, the two ends of the screw rod a are rotatably arranged on one group of the screw rod bracket a, the nut a is sleeved on the screw rod a and is in threaded connection with the screw rod a, one end of the screw rod driving motor a is connected with the screw rod a through a synchronous wheel a, one end of the synchronous wheel a is arranged on one end of the two door-shaped brackets, and one end of the synchronous wheel is connected with the driving motor a through a synchronous wheel and a synchronous belt, and is arranged on the synchronous belt and is fixedly arranged on the two front and connected with the synchronous clamp through a synchronous mechanism;
the two ends of the small sample clamp are also provided with end clamping mechanisms, each end clamping mechanism comprises a V-shaped clamping piece and an electric push rod, the two V-shaped clamping pieces are respectively arranged at the two ends of the bottom plate of the small sample clamp, the middle part of each V-shaped clamping piece is hinged to the lower side of the end part of the bottom plate, and the two ends of the electric push rod are respectively hinged to the lower ends of the two V-shaped clamping pieces;
the laser impact mechanism comprises a screw rod b, a slide rod b, a screw rod support b, a nut b, a screw rod driving motor b, a screw rod c, a screw rod support c, a slide rod c, a screw nut c, a slide block c and screw rod driving motors c, wherein the two slide rods b are arranged in parallel and fixed on the screw rod supports b on two sides, the screw rod b is arranged between the two slide rods b in parallel, two ends of the screw rod b are rotatably arranged on the screw rod support b, one end of the screw rod b is connected with the screw rod driving motor b and driven by the screw rod driving motor b, the nut b is sleeved on the screw rod b and in threaded connection with the screw rod b, the screw rod support c is sleeved on the two slide rods b and can slide freely along the slide rod b, the nut b is fixedly connected with the screw rod support c, the two slide rods c are perpendicular to the slide rod b and are fixed on two sides of the screw rod support c, the screw rod c is parallel to the slide rod c and is rotatably arranged on the screw rod support c, one end of the screw rod c is connected with the screw rod driving motor c and is driven by the screw rod c, the nut c is sleeved on the c and in threaded connection with the screw rod driving motor c, and the nut c is sleeved on the slide rod c and can slide freely slide along the slide rod b.
2. A system for laser shock peening a surface of a small sample according to claim 1, wherein: the door-type support comprises a cross beam and two vertical supports, wherein the cross beam is horizontally arranged above the L-shaped side plates on two sides, the two vertical supports are arranged on the outer side surfaces of the L-shaped side plates on two sides along the vertical direction, and the upper end of each vertical support is fixedly connected with one end of the cross beam.
3. A system for laser shock peening a surface of a small sample according to claim 2, wherein: the pressing mechanism is arranged on the lower side surface of the cross beam.
4. A system for laser shock peening a surface of a small sample according to claim 3, wherein: the pressing mechanisms are divided into two groups, and each group of pressing mechanisms comprises one or more pressing mechanisms.
5. A system for laser shock peening a surface of a small sample according to claim 4, wherein: the compressing mechanism comprises a compressing roller shaft, a sliding rod, a sleeve and a spring, wherein the compressing roller shaft is horizontally arranged, two ends of the compressing roller shaft are rotatably arranged at the lower ends of the two sliding rods, the sliding rod is vertically arranged, a cylindrical limiting block is arranged at the upper end of the sliding rod, a blind hole matched with the cylindrical limiting block is formed in the sleeve, the cylindrical limiting block at the upper end of the sliding rod is slidably arranged in the blind hole of the sleeve and can freely slide along the vertical direction, the spring is arranged in the blind hole, the upper end of the spring is fixed at the upper end of the blind hole, and the lower end of the spring is fixed at the upper end of the cylindrical limiting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810336606.0A CN108251634B (en) | 2018-04-16 | 2018-04-16 | System for be used for little sample surface laser shock peening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810336606.0A CN108251634B (en) | 2018-04-16 | 2018-04-16 | System for be used for little sample surface laser shock peening |
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| Publication Number | Publication Date |
|---|---|
| CN108251634A CN108251634A (en) | 2018-07-06 |
| CN108251634B true CN108251634B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810336606.0A Active CN108251634B (en) | 2018-04-16 | 2018-04-16 | System for be used for little sample surface laser shock peening |
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| CN (1) | CN108251634B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109604898B (en) * | 2018-12-26 | 2021-10-12 | 江苏大学 | Rapid clamping fixture for laser shock peening flat plate sample |
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| CN107034352A (en) * | 2016-11-07 | 2017-08-11 | 江苏大学 | A kind of universal fixturing for laser impact intensified plane plate specimen |
| CN107119182A (en) * | 2017-05-16 | 2017-09-01 | 江苏大学 | A kind of universal fixturing for laser impact intensified pole sample |
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| CN208218916U (en) * | 2018-04-16 | 2018-12-11 | 南通航运职业技术学院 | A kind of device strengthened for small sample surface laser impact |
| CN208218917U (en) * | 2018-04-16 | 2018-12-11 | 南通航运职业技术学院 | A kind of fixture strengthened for small sample surface laser impact |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7750266B2 (en) * | 2004-11-17 | 2010-07-06 | Metal Improvement Company Llc | Active beam delivery system for laser peening and laser peening method |
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2018
- 2018-04-16 CN CN201810336606.0A patent/CN108251634B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0985560A (en) * | 1995-09-28 | 1997-03-31 | Amada Co Ltd | Work clamp device and laser beam machining machine provided with it |
| JP2013202675A (en) * | 2012-03-29 | 2013-10-07 | Mitsubishi Electric Corp | Laser machining head and laser machining apparatus |
| CN203140986U (en) * | 2012-12-24 | 2013-08-21 | 江苏大学 | Laser impact clamp |
| CN105907933A (en) * | 2016-06-25 | 2016-08-31 | 湖北长平汽车装备有限公司 | Multi-pressure-head uniform pressing system |
| CN107034352A (en) * | 2016-11-07 | 2017-08-11 | 江苏大学 | A kind of universal fixturing for laser impact intensified plane plate specimen |
| CN106755945A (en) * | 2017-01-03 | 2017-05-31 | 安徽工业大学 | A kind of method and device for changing crack propagation path based on laser shock wave technology |
| CN107119182A (en) * | 2017-05-16 | 2017-09-01 | 江苏大学 | A kind of universal fixturing for laser impact intensified pole sample |
| CN208055426U (en) * | 2018-04-16 | 2018-11-06 | 南通航运职业技术学院 | A kind of system strengthened for small sample surface laser impact |
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| CN108251634A (en) | 2018-07-06 |
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Address after: No. 185, Tongsheng Avenue, economic development zone, Nantong City, Jiangsu Province, 226000 Applicant after: JIANGSU VOCATIONAL & TECHNICAL SHIPPING College Address before: No. 185, Tongsheng Avenue, economic development zone, Nantong City, Jiangsu Province, 226000 Applicant before: NANTONG SHIPPING College |