CN102618700B - Laser fatigue enhancement method for metallic glass - Google Patents
Laser fatigue enhancement method for metallic glass Download PDFInfo
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- CN102618700B CN102618700B CN 201210111105 CN201210111105A CN102618700B CN 102618700 B CN102618700 B CN 102618700B CN 201210111105 CN201210111105 CN 201210111105 CN 201210111105 A CN201210111105 A CN 201210111105A CN 102618700 B CN102618700 B CN 102618700B
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- glass
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- 239000005300 metallic glass Substances 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000011521 glass Substances 0.000 claims abstract description 33
- 230000002929 anti-fatigue Effects 0.000 claims abstract description 19
- 239000002131 composite material Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims description 31
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 25
- 239000005030 aluminium foil Substances 0.000 claims description 16
- 230000002787 reinforcement Effects 0.000 claims description 9
- 238000007669 thermal treatment Methods 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 238000005498 polishing Methods 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011888 foil Substances 0.000 abstract description 3
- 239000002159 nanocrystal Substances 0.000 abstract 1
- 238000004381 surface treatment Methods 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 7
- 238000005480 shot peening Methods 0.000 description 6
- 238000013001 point bending Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Abstract
The invention relates to the technical field of metallic glass surface treatment, in particular to a laser fatigue enhancement method for metallic glass. The laser fatigue enhancement method for the metallic glass comprises the main steps as follows: 1) a metallic glass surface is ground and polished, and is cleaned with alcohol; 2) the metallic glass surface is subjected to heat treatment by adopting a CO2 continuous laser, and the treatment temperature is controlled through adjusting the laser process parameters so as to enable the surface to have an amorphous-nanocrystal composite structure; 3) aluminum foil is attached to the heat-treated metallic glass surface; and 4) flowing water is defined as a constrained layer, and an Nd: Glass nanosecond pulse laser is adopted to impact the metallic glass surface to which the aluminum foil is attached, so as to obtain surface enhancement modified metallic glass. The invention integrates advantages of the laser thermal effect, comprehensively regulates and controls the microstructure and the stress state of the metallic glass surface, and effectively enhances the fatigue performance. The invention has a simple process, is suitable for producing the metallic glass on a large scale, and can prepare the metallic glass with a high anti-fatigue performance.
Description
Technical field
The present invention relates to the metal glass surface processing technology field, refer in particular to a kind of tired enhancement method of laser of metallic glass.
Background technology
Metallic glass is the unordered and amorphous metallic alloy of short range order of atomic arrangement long-range; At present, the metallic glass of research and development has the Zr base, Cu is basic, Mg is basic, Pb is basic, Al is basic, Fe is basic etc., compares with crystal alloy, and it has the physicochemical property of many excellences, is structure or the functional materials with wide application prospect; As structured material, metallic glass has the performances such as high strength, high rigidity, high elastic strain limit, abrasion resistant and corrosion resistant, uses but lower anti-fatigue performance has seriously limited its engineering.
In order to improve the anti-fatigue performance of metallic glass, people are seeking to improve the method for its anti-fatigue performance always; In metallic glass, introduce the potential effective ways that second-phase is considered to improve anti-fatigue performance at first, but research is found, the introducing of second-phase or raising or reduce its anti-fatigue performance, the result is different, recently, Launey etc. point out the anti-fatigue performance of the yardstick remarkably influenced metallic glass of second-phase, and when the microcosmic length dimension of second-phase and mechanical crackle length dimension were complementary, anti-fatigue performance was improved significantly; In addition, the method of imitating the crystalline material fatigue property to improve, people introduce the method for shot-peening in the metallic glass, to obtaining same effect, but research is found, shot-peening can not significantly improve the fatigue property of metallic glass, this mainly is because the near surperficial creeping that distortion causes is softening, yet, at section depth 100 μ m places, hardness reaches maximum value, the strain hardening phenomenon occurs, shot peening has increased free volume quantity when increasing surface compress residual stresses, and residual compressive stress and free volume quantity are vied each other on the impact of metallic glass fatigue property, and this also is to cause one of reason that shot-peening can not Effective Raise metallic glass fatigue property; Recent research is found, the surface plastic deformation strain rate also has material impact to the fatigue property of metallic glass, metallic glass is in metastable state, its structure is easy to change low-energy crystalline state into from high-octane non-crystalline state in deformation process, thereby separate out the nanometer crystalline phase, nanocrystalline phase can limit as strengthening phase expansion and the propagation of shear zone, causes strain hardening, the strain softening phenomenon that this will effectively overcome metallic glass improves its anti-fatigue performance; In general, existing antifatigue method remains in many deficiencies, makes the anti-fatigue performance of metallic glass can not get effective improvement, restricts its engineering and uses.
For the problems referred to above, the present invention is from the regulation and control of surface micro-structure and stressed condition, the tired novel method of strengthening of laser is proposed, utilize LASER HEAT and power double effect, the microtexture of comprehensive adjustment metal glass surface and stressed condition make unrelieved stress, free volume quantity and the crystalline phase characteristic three on surface reach optimum matching, its anti-fatigue performance of efficient hardening, the deficiency of avoiding existing reinforcement means single effect to exist, the application of enlarged metal glass.
Summary of the invention
Metallic glass is owing to excellent mechanical property has broad application prospects, but relatively poor anti-fatigue performance has seriously limited its engineering and has used, for making it satisfy the demand of practical application, necessary its anti-fatigue performance of efficient hardening, yet, existing enhancement method is restricted its range of application because the deficiency of single effect still can not effectively be improved the anti-fatigue performance of metallic glass; The objective of the invention is for solving top problem, a kind of tired enhancement method of laser of metallic glass is provided, the composite treatment process that it combines with stress effect by laser heat action, the microtexture of comprehensive regulation metal glass surface and stressed condition, make surface residual stress, free volume quantity and crystalline state precipitated phase characteristic reach optimum matching, thus its anti-fatigue performance of Effective Raise.
The technical scheme that the present invention addresses the above problem is: adopt Laser surface heat treatment and the laser impact intensified recombining process that combines to prepare the metallic glass of high fatigue resistance, obtain the optimum matching of surface microstructure and stressed condition, and then improve its anti-fatigue performance.
Concrete steps are:
1) metal glass surface is polished with sand papering, and surperficial with alcohol wash;
2) adopt continuous CO
2Laser apparatus carries out surface heat to metallic glass to be processed, and controls the processing temperature by regulating laser technical parameters
Degree makes the surface obtain the composite structure of amorphous-nano-crystalline;
3) the metal glass surface adhered aluminium foil after thermal treatment is as absorption layer;
4) take flowing water as restraint layer, adopt the Nd:Glass nanosecoud pulse laser to impact the metal glass surface of adhered aluminium foil, obtain the surface
Strengthen the metallic glass of modification.
Described metallic glass is the Zr base, Al is basic, Cu is basic, Ti is basic, Mg is basic, Fe is basic or the Pb base noncrystal alloy.
Described continuous CO
2The laser apparatus heat treatment process parameter is: laser power 100 W-500 W, sweep velocity 10 mm/s-100 mm/s, spot diameter 0.2 mm-2 mm, overlapping rate 10%-50%.
Described aluminum foil thickness is 20 μ m-50 μ m.
Described laser-impact processing parameter is: laser pulse width 5 ns-40 ns, power density 1 GW/cm
2-5 GW/cm
2, spot diameter 1 mm-3 mm, overlapping rate 10%-90%.
The invention has the advantages that: metallic glass is carried out the thermal treatment of laser accelerated surface, the effectively quantity of control surface free volume and crystalline phase characteristic, especially reducing under the prerequisite of free volume the separating out and the coupling of crystalline phase size and micro-crack length dimension of control crystalline phase; In addition, compare with traditional regression technique, laser thermal effect can also be avoided the whole embrittlement of metallic glass; On this basis, laser impact intensified processing can be introduced dark residual compressive stress layer at metal glass surface, the formation and spreading that suppresses fatigue cracking, and owing to its ultra-high voltage, high-strain-rate characteristics, be easy to cause the viscous deformation of surface local high-duty, separating out of the one-step inducing surface crystalline phase of going forward side by side produces the dual function of working hardening and precipitation strength, and this all is that shot peening can not be compared; Moreover, its untouchable detrimental effect that also can avoid shot-peening because polluting metal glass surface fatigue property to be produced; Therefore, the present invention can comprehensively and effectively regulate metal glass surface unrelieved stress, free volume quantity and crystalline phase characteristic by heat and the double effect of power, make the three reach optimum matching, and then its anti-fatigue performance of efficient hardening, prepare the metallic glass of high fatigue resistance, the deficiency of avoiding existing reinforcement means single effect to exist, thus promote and enlarged its practical application.This technological process is simple, is suitable for large-scale batch production.
Embodiment
The metallic glass of high fatigue resistance is to be prepared from the laser impact intensified recombining process that combines by Laser surface heat treatment among the present invention; At first metal glass surface is polished with sand papering, and clean with alcohol wash, then adopt continuous CO
2Laser apparatus carries out surface heat to metallic glass to be processed, come control surface free volume quantity and crystalline phase characteristic by regulating laser technical parameters, at last aluminium foil is attached to the metal glass surface after the thermal treatment, impact metal glass surface with nanosecoud pulse laser, obtain the metallic glass of surface reinforcement modifying; The metallic glass that adopts this invention to process, surface microstructure and stressed condition reach optimum matching, and fatigue property is strengthened significantly, has promoted its application in practice.
Embodiment 1
1) with metallic glass Zr
44Ti
11Ni
10Cu
10Be
25Sand for surface paper sanding and polishing, and surperficial with alcohol wash;
2) adopt continuous CO
2Laser apparatus is to metallic glass Zr
44Ti
11Ni
10Cu
10Be
25Carry out surface heat and process, laser technical parameters is: laser power 200 W, and sweep velocity 30 mm/s, spot diameter 0.2 mm, overlapping rate 20% makes the surface form the amorphous-nano-crystalline composite structure;
3) metal glass surface after thermal treatment attaches 50 μ m aluminium foils, as absorption layer;
4) take flowing water as restraint layer, adopt the Nd:Glass nanosecoud pulse laser to impact the metal glass surface of adhered aluminium foil, the laser-impact processing parameter is: laser pulse width 40 ns, power density 3 GW/cm
2, spot diameter 2 mm, overlapping rate 20%, the metallic glass of acquisition surface reinforcement modifying.
Adopt four-point bending test to measure before the processing and metallic glass Zr after processing
44Ti
11Ni
10Cu
10Be
25Fatigue strength, record that the fatigue strength of metallic glass is 420MPa before processing, its fatigue strength is 503MPa after processing, as seen adopt the present invention to process after, the fatigue property of metallic glass is significantly improved.Therefore adopt the present invention can prepare the metallic glass of high fatigue resistance.
Embodiment 2
1) with metallic glass Ti
42Zr
3Hf
4Cu
42.5Ni
7.5Si
1Sand for surface paper sanding and polishing, and surperficial with alcohol wash;
2) adopt continuous CO
2Laser apparatus is to metallic glass Ti
42Zr
3Hf
4Cu
42.5Ni
7.5Si
1Carry out surface heat and process, laser technical parameters is: laser power 100W, and sweep velocity 10mm/s, spot diameter 1mm, overlap joint 10% makes the surface form the amorphous-nano-crystalline composite structure;
3) metal glass surface after thermal treatment attaches 20 μ m aluminium foils, as absorption layer;
4) take flowing water as restraint layer, adopt the Nd:Glass nanosecoud pulse laser to impact the metal glass surface of adhered aluminium foil, the laser-impact processing parameter is: laser pulse width 10ns, power density 1GW/cm
2, spot diameter 1mm, overlapping rate 30%, the metallic glass of acquisition surface reinforcement modifying.
Adopt four-point bending test to measure before the processing and metallic glass Ti after processing
42Zr
3Hf
4Cu
42.5Ni
7.5Si
1Fatigue strength, record that the fatigue strength of metallic glass is 1560MPa before processing, its fatigue strength is 1720MPa after processing, as seen adopt the present invention to process after, the fatigue property of metallic glass is significantly improved, and therefore adopts the present invention can prepare the metallic glass of high fatigue resistance.
Embodiment 3
1) with metallic glass Fe
43Co
5Cr
15Mo
14Er
2C
15B
6Sand for surface paper sanding and polishing, and surperficial with alcohol wash;
2) adopt continuous CO
2Laser apparatus is to metallic glass Fe
43Co
5Cr
15Mo
14Er
2C
15B
6Carry out surface heat and process, laser technical parameters is: laser power 500W, and sweep velocity 100mm/s, spot diameter 0.5mm, overlapping rate 50% makes the surface form the amorphous-nano-crystalline composite structure;
3) metal glass surface after thermal treatment attaches 30 μ m aluminium foils, as absorption layer;
4) take flowing water as restraint layer, adopt the Nd:Glass nanosecoud pulse laser to impact the metal glass surface of adhered aluminium foil, the laser-impact processing parameter is: laser pulse width 5ns, power density 2GW/cm
2, spot diameter 3mm, overlapping rate 10%, the metallic glass of acquisition surface reinforcement modifying.
Adopt four-point bending test to measure before the processing and metallic glass Fe after processing
43Co
5Cr
15Mo
14Er
2C
15B
6Fatigue strength, record that the fatigue strength of metallic glass is 679MPa before processing, its fatigue strength is 752MPa after processing, as seen adopt the present invention to process after, the fatigue property of metallic glass is significantly improved, and therefore adopts the present invention can prepare the metallic glass of high fatigue resistance.
Embodiment 4
1) with metallic glass Al
88.5Ni
8Y
2La
1.5Sand for surface paper sanding and polishing, and surperficial with alcohol wash;
2) adopt continuous CO
2Laser apparatus is to metallic glass Al
88.5Ni
8Y
2La
1.5Carry out surface heat and process, laser technical parameters is: laser power 400W, and sweep velocity 70mm/s, spot diameter 2mm, overlapping rate 30% makes the surface form the amorphous-nano-crystalline composite structure;
3) metal glass surface after thermal treatment attaches 45 μ m aluminium foils, as absorption layer;
4) take flowing water as restraint layer, adopt the Nd:Glass nanosecoud pulse laser to impact the metal glass surface of adhered aluminium foil, the laser-impact processing parameter is: laser pulse width 20ns, power density 4 GW/cm
2, spot diameter 3mm, overlapping rate 90%, the metallic glass of acquisition surface reinforcement modifying.
Adopt four-point bending test to measure before the processing and metallic glass Al after processing
88.5Ni
8Y
2La
1.5Fatigue strength, record that the fatigue strength of metallic glass is 280MPa before processing, its fatigue strength is 330MPa after processing, as seen adopt the present invention to process after, the fatigue property of metallic glass is significantly improved, and therefore adopts the present invention can prepare the metallic glass of high fatigue resistance.
Embodiment 5
1) with metallic glass Cu
47.5Zr
47.5Al
5Sand for surface paper sanding and polishing, and surperficial with alcohol wash;
2) adopt continuous CO
2Laser apparatus is to metallic glass Cu
47.5Zr
47.5Al
5Carry out surface heat and process, laser technical parameters is: laser power 300W, and sweep velocity 50mm/s, spot diameter 1.5mm, overlapping rate 40% makes the surface form the amorphous-nano-crystalline composite structure;
3) metal glass surface after thermal treatment attaches 35 μ m aluminium foils, as absorption layer;
4) take flowing water as restraint layer, adopt the Nd:Glass nanosecoud pulse laser to impact the metal glass surface of adhered aluminium foil, the laser-impact processing parameter is: laser pulse width 30ns, power density 5GW/cm
2, spot diameter 2.5mm, overlapping rate 50%, the metallic glass of acquisition surface reinforcement modifying.
Adopt four-point bending test to measure before the processing and metallic glass Cu after processing
47.5Zr
47.5Al
5Fatigue strength, record that the fatigue strength of metallic glass is 221MPa before processing, its fatigue strength is 265MPa after processing, as seen adopt the present invention to process after, the fatigue property of metallic glass is significantly improved, and therefore adopts the present invention can prepare the metallic glass of high fatigue resistance.
Claims (5)
1. the tired enhancement method of the laser of a metallic glass is characterized in that: metallic glass is carried out laser successively
Surface heat is processed with laser impact intensified, improves the anti-fatigue performance of metallic glass, and concrete steps are:
1) with metal glass surface sanding and polishing and cleaning;
2) adopt continuous CO
2Laser apparatus carries out surface heat to metallic glass to be processed, by regulating laser technical parameters
Control treatment temp, make the surface obtain the composite structure of amorphous-nano-crystalline;
3) the metal glass surface adhered aluminium foil after thermal treatment is as absorption layer;
4) take flowing water as restraint layer, adopt the Nd:Glass nanosecoud pulse laser to impact the metallic glass of adhered aluminium foil
The surface, the metallic glass of acquisition surface reinforcement modifying.
2. the tired enhancement method of the laser of a kind of metallic glass according to claim 1 is characterized in that: described
Metallic glass is the Zr base, Al is basic, Cu is basic, Ti is basic, Mg is basic, Fe is basic or the Pb base noncrystal alloy.
3. the tired enhancement method of the laser of a kind of metallic glass according to claim 1 is characterized in that: described continuous CO
2The heat treated processing parameter of laser apparatus is: laser power 100 W-500 W, sweep velocity 10 mm/s-100 mm/s, spot diameter 0.2 mm-2 mm, overlapping rate 10%-50%.
4. the tired enhancement method of the laser of a kind of metallic glass according to claim 1 is characterized in that, the thickness of described aluminium foil is 20 μ m-50 μ m.
5. the tired enhancement method of the laser of a kind of metallic glass according to claim 1 is characterized in that, described laser-impact processing parameter is: laser pulse width 5 ns-40 ns, power density 1 GW/cm
2-5 GW/cm
2, spot diameter 1 mm-3 mm, overlapping rate 10%-90%.
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| CN 201210111105 CN102618700B (en) | 2012-04-17 | 2012-04-17 | Laser fatigue enhancement method for metallic glass |
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|---|---|---|---|
| CN 201210111105 CN102618700B (en) | 2012-04-17 | 2012-04-17 | Laser fatigue enhancement method for metallic glass |
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| CN102618700B true CN102618700B (en) | 2013-10-23 |
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| CN105097381B (en) * | 2014-05-06 | 2017-04-12 | 中国科学院沈阳自动化研究所 | Laser shock life-prolonging method of tungsten electrode of short-arc lamp |
| CN112894113A (en) * | 2021-01-29 | 2021-06-04 | 山东省科学院新材料研究所 | Aluminum-magnesium heterogeneous alloy post-welding treatment process and application thereof |
| CN113372863A (en) * | 2021-06-22 | 2021-09-10 | 深圳市汇海鑫科技有限公司 | High-thermal-conductivity and high-electric-conductivity organic adhesive and preparation method thereof |
| CN114959533B (en) * | 2022-06-22 | 2023-06-23 | 沈阳工业大学 | Laser shock strengthening method for improving depth of compressive stress layer and fatigue performance of titanium alloy surface |
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| CN1644714A (en) * | 2005-01-11 | 2005-07-27 | 东北大学 | Method for preparing iron-bast non-crystalline nanometer crystal magnetically soft alloy by laser surface crystallization |
| CN1944687B (en) * | 2006-09-15 | 2010-05-12 | 江苏大学 | Strong laser induced periodical micro nano method and its device for material surface |
| CN101928810A (en) * | 2010-08-10 | 2010-12-29 | 北京工业大学 | Method for preparing annular iron-based amorphous and nanocrystalline soft magnetic alloy by laser irradiation |
| CN102199690A (en) * | 2011-04-21 | 2011-09-28 | 中国人民解放军空军工程大学 | Laser plasma shock wave surface nanocrystallization method for polycrystal metal material |
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Effective date of registration: 20171117 Address after: 212100 Zhenjiang province Jiangsu city Dantu District Shangdang ecological Automobile Industrial Park No. 8 Patentee after: JIANGSU HUIZHI INTELLECTUAL PROPERTY SERVICES Co.,Ltd. Address before: Zhenjiang City, Jiangsu Province, 212013 Jingkou District Road No. 301 Patentee before: Jiangsu University |
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Effective date of registration: 20191223 Address after: 225200 No. 88 Wenchang East Road, Jiangdu District, Yangzhou, Jiangsu. Patentee after: Yangzhou (Jiangdu) New Energy Automobile Industry Research Institute of Jiangsu University Address before: 212100 Zhenjiang province Jiangsu city Dantu District Shangdang ecological Automobile Industrial Park No. 8 Patentee before: JIANGSU HUIZHI INTELLECTUAL PROPERTY SERVICES Co.,Ltd. |
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