CN104962723B - A kind of method repairing Metal Crack - Google Patents
A kind of method repairing Metal Crack Download PDFInfo
- Publication number
- CN104962723B CN104962723B CN201510285268.9A CN201510285268A CN104962723B CN 104962723 B CN104962723 B CN 104962723B CN 201510285268 A CN201510285268 A CN 201510285268A CN 104962723 B CN104962723 B CN 104962723B
- Authority
- CN
- China
- Prior art keywords
- microcapsule
- crackle
- agent
- laser
- effect
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 0 CC1N*=C=C=C1 Chemical compound CC1N*=C=C=C1 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
The present invention relates to field of laser processing, refer in particular to a kind of method repairing Metal Crack.Mainly for metal device face crack, using first using microcapsule binding agent to fill crackle, then with laser impact intensified method, crack of metal surface is repaired, wherein microcapsule binding agent is by 15 by renovation agent microcapsule and firming agent microcapsule:2 volume ratio carries out being sufficiently mixed being formulated.When laser impact intensified is carried out to the Metal Crack being filled with microcapsule binding agent and peripheral region, microcapsule binding agent is in the presence of laser-impact wave pressure, cyst wall ruptures, and renovation agent and firming agent flow out, mix thus bonding crackle, reach preferable adhesive effect；Simultaneously because the effect of laser-impact is so that crackle and peripheral region are strengthened, textura epidermoidea is even closer, and mechanical performance is obviously improved, thus effectively preventing crackle diffusion and the generation of new crackle；Have a dual effect.
Description
Technical field
The inventive method is related to field of laser processing, refers in particular to a kind of laser impact intensified and microcapsule binding agent compound action
The method repairing Metal Crack, is suitable for renovation machine working face of guide rail, aviation key component, and other metallic element surfaces
Shallow scuffing and other micro-damage crackles.
Background technology
Laser impact intensified（It is laser peening again）It is a kind of new material surface strengthening technology, using strong laser induced
Knock wave mechanics effect material is processed, there is the features such as high pressure, high energy, ultrafast and Under High Strain rate, it forms
Residual compressive stress layer can eliminate the stress concentration of material internal and the germinating of suppression crackle and extension effectively, can significantly improve
The fatigue life of metal parts and anticorrosive and antiwear property, substantial amounts of research has shown that reiforcing laser impact technology is to extend
The crack initiation time, reduce the effective means that crack propagation velocity improves material lifetime.
Industrial part major part is to be made up of metal material, metal alloy parts at work, due to frayed, punching
Hit, the effect such as fatigue, be also easy to produce crackle, cause material scrap, using recovery technique, the part that there is crack defect is repaiied
Multiple, extend its service life, considerable economic benefit can be obtained；Current Crack Repairing method has a manual electric arc welding, submerged-arc welding,
Vibration welding, chromium plating, metal spraying, the mode, wherein manual electric arc welding, submerged-arc welding, vibration welding such as metal is gluing, it is suitable for repairing
Multiple relatively deep wider damaged metal, unsatisfactory for narrower shallower crack of metal surface welding effect, welding portion is usually
Higher than metal base surface, and hot injury can be caused to weld seam peripheral region；Chromium plating and metal spraying can cause matrix material
Surface thickness increases, and exceedes job design requirement, and the ability that chromium plating and sprayed coating bear contact stress is not high；Metal glues
Mixture paste, poor fluidity is it is impossible to adequately fill up crackle gap, and binding agent is filled before crackle just after mix homogeneously
There is part curing reaction, thus reducing repairing effect；In actual industrial production engineering, most of crackle be narrower, shallower,
Irregular micro-damage crackle, now repairs and can deepen Crack prevention in time, the most easily recover mechanical performance, reach and work on
The demand producing, and economic costs are the most cheap；Microcapsule metal-to-metal adhesive is particulate material, can be sufficient filling with crackle seam
The every nook and cranny of gap, when repairing the micro-damage of metallic element, easy to operate, fast, there is very important practical significance,
But the microcapsule limited amount of microcapsule binding agent cyst wall rupture under general pressurization, the amount of binder of outflow is few, thus
Repairing effect is general, and cannot Crack prevention diffusion and the new crackle in peripheral region generation.
Content of the invention
In order to solve the above problems, the invention provides a kind of made using laser impact intensified being combined with microcapsule binding agent
Method with repairing Metal Crack, is filled out using microcapsule binding agent mainly for metal device surface imperfection micro-damage crackle
Fill, then repaired with laser impact intensified method；Microcapsule binding agent in the presence of laser-impact wave pressure, big absolutely portion
Cyst wall is divided to rupture, renovation agent and firming agent flow out and mix thus bonding crackle, compare conventional pressurized method, it is micro- that cyst wall ruptures
Capsule quantity showed increased, thus be obviously improved bonding effect；Simultaneously because the effect of laser-impact is so that crackle and peripheral region
The surface layer grain in domain is refined, and textura epidermoidea is even closer, and residual stress significantly increases, and mechanical performance is obviously improved, thus
Effectively prevent crackle diffusion and the generation of new crackle；Laser impact intensified can make most microcapsules ruptures, lifting is viscous
Connect effect, crackle and peripheral region can be strengthened again, prevent crackle diffusion and new crackle from generating, have a dual effect.
Concretely comprise the following steps：
（1）Measure depth capacity h of damaged metal part crackle, Breadth Maximum a, determine that laser-impact is strong according to matrix material
Maximum effect depth H changed, if meet 0<h<H, 0<a<This two conditions of h, then can be repaired using methods described herein.
（2）The matrix surface of damaged metal part crackle peripheral region is polished it is ensured that crackle peripheral region after being polished
Matrix surface flat smooth, roughness be less than or equal to Ra0.3；Then brush away, with banister brush, the impurity loosening in crackle, then
Rinsed 3～4 minutes with the mixed solution of potassium dichromate and concentrated sulphuric acid, to reach rust cleaning, to go deimpurity purpose, carrying out afterwards
Wash, be dried；Finally clean crackle using acetone, remove the oil stain of residual, then clean surface.
（3）The test specimen scrubbing after process and dry is fixed on mechanical vibration generator system, sets vibration frequency as 3Hz, amplitude
For 2mm, direction of vibration perpendicular to crackle matrix surface trend, now vibration table switch be closed.
（4）Modulation microcapsule binding agent：In order to reach higher repairing effect, the microcapsule binding agent selected by this paper is
Formed by renovation agent microcapsule and firming agent microcapsule mixed preparing；Renovation agent microcapsule is with bisphenol A type epoxy resin
DGEBA and its reactive diluent are capsule-core, and Lauxite is 10～50um's for cyst wall by particle diameter prepared by situ aggregation method
Particulate material；Firming agent microcapsule is with anionic catalyst DMP-30 as capsule-core, and polystyrene is for cyst wall by complex phase breast
The particle diameter of liquid method preparation is the particulate material of 20～60um, by renovation agent microcapsule and firming agent microcapsule by 15 specifying:2
Volume ratio be sufficiently mixed.
（5）Microcapsule binding agent fills crackle：First the microcapsule mixing is loaded in funnel, funnel bore is
200um, then opens the switch of mechanical vibration generator system, with funnel by the microcapsule mixing along crackle matrix surface trend
N shell is divided slowly to be sprinkled in crackle gap, whereinN≤, N round numbers, wherein b are the thickness of each microcapsule, b's
Span is 0.15～0.25mm；Microcapsule due to being spilled into is being horizontally orientated to along crackle, therefore with mechanical vibration
Direction is vertical, and the vibrations of this vertical direction enable to the every nook and cranny that each layer of microcapsule sufficiently fills crackle, and
And make each microcapsule surfacing uniform.
（6）Repeat step（5）, spread the second microcapsule, third layer microcapsule ... is up to n-th layer.
（7）Turn off mechanical vibration generator system switch, with touching knife pressing surface of microcapsule, microcapsule is compacted, then by excess portion
Point erase so that microcapsule upper surface and aggregate material flush.
（8）Paste one layer of aluminium foil in microcapsule upper surface as absorbed layer, aluminium foil need to cover whole slit region and crackle week
Enclose the surface of matrix material；Then use flowing water as transparent restraint layer, it is carried out with large area overlap joint laser impact intensified.
（9）In the presence of shock wave pressure, cyst wall ruptures microcapsule binding agent, and renovation agent and firming agent flow out；
Damage component sample after shock peening is 25 DEG C in temperature, pressure is solidified, in order to reach under conditions of 20MPa
Good bonding effect, selects be 24 hours hardening time.
（10）Remove aluminium foil, the binding agent upper surface after polishing solidification；While damaged metal part crackle obtains repairing,
Because the effect of laser-impact is so that the surface layer grain of crackle and surrounding matrix material is refined, textura epidermoidea is even closer,
Residual stress significantly increases, and mechanical performance is obviously improved.
Therefore this method can either reach comparatively ideal repairing effect, can effectively prevent crackle diffusion and surrounding again
The generation of the new crackle in region, has a dual effect.
So far complete the repair of damage component.
Of the present invention laser impact intensified during laser energy in the range of 6～8J, overlapping rate be 30%～
70%.Absorbed layer is the thick aluminium foil of 1mm, and the thickness of transparent restraint layer is 1mm；Metallographic sand from coarse to fine is used during polishing
Paper.The pressure that renovation agent microcapsule and firming agent effect microcapsule wall can bear is all higher than 100MPa, less than 500MPa.
Beneficial effects of the present invention：Microcapsule binding agent is the particulate material that particle diameter is in the range of 10～60um, flowing
Property is good, can be sufficient filling with the every nook and cranny in damage component crackle gap in the presence of mechanical vibration；Microcapsule binding agent is in height
Reach under the shock wave pressure effect of GPa magnitude, cyst wall almost all ruptures, and discharges renovation agent and firming agent, thus bonding is repaiied
Multiple crackle.Simultaneously as the effect of laser-impact is so that the surface layer grain of crackle and surrounding matrix material is refined, top layer
Tissue is even closer, and residual stress significantly increases, and mechanical performance is obviously improved, and therefore this method can either reach comparatively ideal
Repairing effect, can effectively prevent crackle diffusion and the generation of the new crackle in peripheral region again, have a dual effect.
Brief description
Fig. 1 repairs the flow process chart of crack of metal surface for methods described herein.
Fig. 2 repairs the schematic diagram of crack of metal surface for methods described herein.
Fig. 3 is conventional pressurized method（a）With laser impact intensified method（b）Cross-section comparison's figure of gained crack forming mechanism layer.
Fig. 4 is the section metallographic structure figure without laser impact intensified top layer for the crackle peripheral region.
Fig. 5 is the section metallographic structure figure on crackle peripheral region top layer after laser impact intensified.
Specific embodiment
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described in detail.
The matrix of samples material that the present embodiment is adopted be 316L rustless steel, its physical dimension be 100mm × 50mm ×
10mm, upper width 0.4mm, deep 0.7mm, the anarchial cleavage groove of long 10mm together are opened in position wire cutting therebetween.
A kind of example repairing sample using above-mentioned processing method, its step is:
（1）Show that laser impact intensified maximum effect depth H in rustless steel is 0.8 mm according to about research, by crackle
Size understands h=0.7mm, a=0.4mm；Meet 0<h<H, 0<a<This two conditions of h, therefore can be entered using methods described herein
Row is repaired.
（2）The matrix surface of damaged metal part crackle peripheral region is polished it is ensured that crackle peripheral region after being polished
Matrix surface flat smooth, roughness be less than or equal to Ra0.3, then with banister brush brush away in crackle loosen impurity, then
Rinsed 3～4 minutes with the mixed solution of potassium dichromate and concentrated sulphuric acid, to reach rust cleaning, to go deimpurity purpose, carrying out afterwards
Wash, be dried.Finally clean crackle using acetone, remove the oil stain of residual, cleaning then surface.
（3）The test specimen scrubbing after process and dry is fixed on mechanical vibration generator system, sets vibration frequency as 3Hz, amplitude
For 2mm, direction of vibration perpendicular to crackle matrix surface trend, now vibration table switch be closed.
（4）Modulation microcapsule binding agent：By renovation agent microcapsule and firming agent microcapsule by 15 specifying:2 volume ratio
It is sufficiently mixed.
（5）Microcapsule binding agent fills crackle.First the microcapsule mixing is loaded in funnel, funnel bore is
200um, then opens the switch of mechanical vibration generator system, with funnel by the microcapsule mixing along crackle matrix surface trend
N shell is divided slowly to be sprinkled in crackle gap, whereinN≤, N round numbers, b is the thickness of each microcapsule, the value of b
Scope is 0.15～0.25mm；In the present embodiment, b takes 0.2mm, is computed understanding N round numbers 4.
（6）Repeat step（5）, spread the second microcapsule, third layer microcapsule ... is up to the 4th layer.
（7）Turn off mechanical vibration generator system switch, with touching knife pressing surface of microcapsule, microcapsule is compacted, then by excess portion
Point erase so that microcapsule upper surface and aggregate material flush.
（8）Paste one layer of aluminium foil in microcapsule upper surface as absorbed layer, the width of aluminium foil is 5mm, to guarantee to cover
Crackle and the surface of surrounding matrix material；Then use flowing water as transparent restraint layer, it is carried out laser impact intensified, wherein sharp
Light shock peening parameter is as follows：Laser energy 8J, overlapping rate 50%, spot diameter 3mm, aluminum foil thickness 1mm, flowing water constrains thickness
Degree 1mm.
（9）Damage component sample after shock peening is 25 DEG C in temperature, pressure is for solidifying 24 hours under the conditions of 20MP.
（10）Remove aluminium foil, the binding agent upper surface after polishing solidification, so far complete the repair of damage component.
Wire cutting is carried out to the sample after the completion of repairing, takes its crack forming mechanism layer cross section and the section of crackle peripheral region to do
Metallographic structure is observed, then metallograph is contrasted with the metallographic structure figure obtained by " general processing method ", described " typically adds
Work method " do not adopt laser impact intensified, and using conventional pressurized method force microcapsules rupture repair Metal Crack method,
Gained picture is as follows：
As Fig. 3（a）316L stainless steel surfaces crackle that is shown, being repaired using general processing method, its crack forming mechanism layer is deposited
In uncracked microcapsule in a large number, and renovation agent and firming agent fail uniformly to fill crackle；And scheme（b）Display, using this paper institute
Method of stating repairs 316L stainless steel surfaces crackle, and its crack forming mechanism layer only has a small amount of microcapsule and do not rupture, most renovation agents
And firming agent flows out, uniformly fill crackle.
As shown in figure 4, the 316L stainless steel surfaces crackle repaired using general processing method, its crackle peripheral region
Mantle micro structure porosity is larger, and crystal grain is also thicker
As shown in figure 5, using the laser impact intensified method reparation with microcapsule binding agent compound action described herein
316L stainless steel surfaces crackle, the mantle micro structure porosity of its crackle peripheral region is much smaller, and crystal grain is refined, group
Knit structure more closely orderly, be effectively prevented the generation of new crackle in crackle peripheral region.
Claims (8)
1. a kind of repair Metal Crack method it is characterised in that：For metal device face crack, using the bonding of first microcapsule
Agent is filled, then is repaired with laser impact intensified method；Microcapsule binding agent in the presence of laser-impact wave pressure, absolutely
Most of cyst wall ruptures, and renovation agent and firming agent flow out mixing thus bonding crackle, reach preferable adhesive effect；Simultaneously
Because the effect of laser-impact is so that the surface layer grain of crackle and peripheral region is refined, textura epidermoidea is even closer, remaining
Stress significantly increases, and mechanical performance is obviously improved, thus effectively preventing crackle diffusion and the generation of new crackle；Described microcapsule
Binding agent is to be formed by renovation agent microcapsule and firming agent microcapsule mixed preparing；Renovation agent microcapsule is with bisphenol type epoxy
Resin DGEBA and its reactive diluent are capsule-core, Lauxite is the particle diameter prepared by situ aggregation method of cyst wall for 10～
The particulate material of 50um；Firming agent microcapsule is that polystyrene passes through for cyst wall with anionic catalyst DMP-30 as capsule-core
The particle diameter of multiphase emulsion method preparation is the particulate material of 20～60um, by renovation agent microcapsule and firming agent microcapsule by regulation
15:2 volume ratio is sufficiently mixed；The pressure that renovation agent microcapsule and firming agent effect microcapsule wall can bear is all higher than
100MPa, less than 500MPa；When pressure is more than 500MPa, effect microcapsule wall ruptures, and the renovation agent including and firming agent flow out
Full of slit region.
2. as claimed in claim 1 a kind of repair Metal Crack method it is characterised in that comprising the following steps that：
(1) measure depth capacity h of damaged metal part crackle, Breadth Maximum a, determined according to matrix material laser impact intensified
Maximum effect depth H, wherein 0<h<H, 0<a<h；
(2) matrix surface of damaged metal part crackle peripheral region carried out polishing, eliminate rust, roguing, washing, drying, cleaning are split
Stricture of vagina, deoils, and cleans matrix surface；
(3) test specimen scrubbing after process and dry is fixed on mechanical vibration generator system, direction of vibration is perpendicular to crackle in matrix table
The trend in face, now vibration table switch be closed；
(4) microcapsule binding agent filling crackle：First the microcapsule mixing is loaded in funnel, then open mechanical vibration generator system
Switch, with funnel, the microcapsule mixing is divided N shell to be slowly sprinkled in crackle gap along crackle in the trend of matrix surface,
WhereinN round numbers, wherein b are the thickness of each microcapsule, and the span of b is 0.15～0.25mm；
Microcapsule due to being spilled into is being horizontally orientated to along crackle, therefore vertical with the direction of mechanical vibration, this vertical direction
Vibrations enable to the every nook and cranny that each layer of microcapsule sufficiently fills crackle, and each microcapsule surface is put down
Whole uniform；
(5) repeat step (4), spread the second microcapsule, and third layer microcapsule ... is up to n-th layer；
(6) turn off mechanical vibration generator system switch, with touching knife pressing surface of microcapsule, microcapsule is compacted, then redundance is smeared
Go so that microcapsule upper surface and aggregate material flush；
(7) paste one layer of aluminium foil as absorbed layer in microcapsule upper surface, aluminium foil need to cover base around whole slit region and crackle
The surface of body material；Then use flowing water as transparent restraint layer, it is carried out with large area overlap joint laser impact intensified；
(8) in the presence of shock wave pressure, cyst wall ruptures microcapsule binding agent, and renovation agent and firming agent flow out；To rush
Hit the solidification of the damage component sample after strengthening；
(9) aluminium foil, the binding agent upper surface after polishing solidification are removed；While damaged metal part crackle obtains repairing, due to
So that the surface layer grain of crackle and surrounding matrix material is refined, textura epidermoidea is even closer for the effect of laser-impact, remaining
Stress significantly increases, and mechanical performance is obviously improved.
3. as claimed in claim 2 a kind of repair Metal Crack method it is characterised in that：Gold in described step (1)
, in below 0.8mm, laser impact intensified maximum effect depth H is in below 0.9mm for depth capacity h of metal surface crackle.
4. as claimed in claim 2 a kind of repair Metal Crack method it is characterised in that in described step (2) to gold
The matrix surface of genus damage component crackle peripheral region carries out polishing and refers to：The matrix surface of damaged metal part crackle peripheral region is entered
Row polishing it is ensured that polishing after crackle peripheral region matrix surface flat smooth, roughness be less than or equal to Ra0.3；Then use
Banister brush brushes away the impurity loosening in crackle.
5. as claimed in claim 2 a kind of reparation method of Metal Crack it is characterised in that removing in described step (2)
Rust, roguing refer to：Rinsed 3～4 minutes with the mixed solution of potassium dichromate and concentrated sulphuric acid, to reach rust cleaning, to go deimpurity purpose；
Described cleaning crackle, the finger that deoils cleans crackle using acetone, removes the oil stain of residual.
6. as claimed in claim 2 a kind of repair Metal Crack method it is characterised in that：Machine in described step (3)
The vibration frequency of tool vibration table is 3Hz, and amplitude is 2mm.
7. as claimed in claim 2 a kind of repair Metal Crack method it is characterised in that：Swashing in described step (7)
During light shock peening, in the range of 6～8J, overlapping rate is 30%～70% to laser energy；Absorbed layer is the thick aluminium foil of 1mm,
The thickness of transparent restraint layer is 1mm.
8. as claimed in claim 2 a kind of repair Metal Crack method it is characterised in that：Consolidating in described step (8)
Change and refer to be 25 DEG C in temperature, pressure is solidified under conditions of 20MPa, in order to reach optimum adhesion effect, when selecting solidification
Between be 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510285268.9A CN104962723B (en) | 2015-05-29 | 2015-05-29 | A kind of method repairing Metal Crack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510285268.9A CN104962723B (en) | 2015-05-29 | 2015-05-29 | A kind of method repairing Metal Crack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104962723A CN104962723A (en) | 2015-10-07 |
| CN104962723B true CN104962723B (en) | 2017-03-08 |
Family
ID=54216807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510285268.9A Expired - Fee Related CN104962723B (en) | 2015-05-29 | 2015-05-29 | A kind of method repairing Metal Crack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104962723B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648201A (en) * | 2016-03-24 | 2016-06-08 | 江苏大学 | Method for improving repairing effect of self-repairing material through laser shock waves |
| CN109777977A (en) * | 2017-06-10 | 2019-05-21 | 黄国新 | A kind of punching machine rushes the manufacturing method of stick |
| CN108186102B (en) * | 2018-02-05 | 2023-12-05 | 上海锐植医疗器械有限公司 | Non-metallic implant screw locking structure |
| CN110176554B (en) * | 2019-05-30 | 2021-08-13 | 苏州清越光电科技股份有限公司 | Packaging method and packaging structure |
| CN111843375B (en) * | 2020-07-31 | 2021-12-21 | 中山市方威金属科技有限公司 | Melting repairing method for repairing stainless steel workpiece cracks |
| WO2022073232A1 (en) * | 2020-10-10 | 2022-04-14 | 深圳烯湾科技有限公司 | Self-repairing gas storage tank system and new energy vehicle |
| CN113334021B (en) * | 2021-04-21 | 2022-12-06 | 苏州华超金属材料有限公司 | Steel plate surface self-joint-repairing anti-corrosion treatment process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7108914B2 (en) * | 2002-07-15 | 2006-09-19 | Motorola, Inc. | Self-healing polymer compositions |
| CN101239432A (en) * | 2007-11-16 | 2008-08-13 | 江苏大学 | Crack arrest method of alloy surface fine crack crack arrest method and device thereof |
| CN101240150A (en) * | 2007-11-16 | 2008-08-13 | 江苏大学 | Polyester adhesive crack arrest paster and its preparation method and application |
| CN102702838B (en) * | 2012-06-28 | 2013-11-20 | 中国船舶重工集团公司第七二五研究所 | Micro-crack self-repairing microcapsule and preparation method thereof |
| CN102886606B (en) * | 2012-10-16 | 2015-08-26 | 江苏大学 | A kind of method and apparatus of laser remanufacturing sheet metal weldment |
| CN103468925B (en) * | 2013-08-29 | 2014-11-05 | 温州大学 | Laser shock peening method and device of bottom plane of blade tenon groove of airplane |
-
2015
- 2015-05-29 CN CN201510285268.9A patent/CN104962723B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104962723A (en) | 2015-10-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104962723B (en) | A kind of method repairing Metal Crack | |
| CN103409758B (en) | Pump shells and blade microcrack laser reinforcing life-prolonging method | |
| CN102839824B (en) | Steel-bonded reinforcement method for steel structure | |
| CN104480476B (en) | Laser thermal combination remanufacturing method for metal damage part | |
| Hanke et al. | Cavitation erosion of NiAl-bronze layers generated by friction surfacing | |
| CN105648201A (en) | Method for improving repairing effect of self-repairing material through laser shock waves | |
| CN105154870A (en) | Metal part remanufacturing method adopting stress control and 3D printing | |
| CN110666329B (en) | Method for improving corrosion resistance of welded joint of aluminum plate and steel plate | |
| CN106583916A (en) | Method for repairing long volume type defects in metal component by utilizing friction stir welding | |
| CN110438425B (en) | Strengthening method for optimally combining laser shock strengthening and shot peening strengthening | |
| CN107757060A (en) | A kind of metal based surface composite material and preparation method thereof | |
| CN108705199A (en) | A kind of NiTi and Ti6Al4V dissimilar metals complex welding method | |
| CN102211428B (en) | Cavitation corrosion gradient reparation coating of water pump blade and producing method thereof | |
| CN107283058A (en) | A kind of lifting aluminium, the welding method of steel weldment welding effect | |
| CN111843373B (en) | Method for improving abrasion damage rapid cold repair strength of flow passage component of water turbine | |
| CN106119832A (en) | The restorative procedure of electromotor booster pump impeller blade tip cavitation erosion | |
| CN105349736A (en) | Crack initiation and expansion method in restraint structural component based on laser shock peening | |
| CN210476068U (en) | Enamel reaction kettle corrosion repair structure | |
| CN203343904U (en) | Multi-pin impact head for ultrasonic impact gun | |
| CN107984054A (en) | Transition zone welding material and its welding method are docked in titanium steel composite board melting welding | |
| CN106637188A (en) | Repair method of cavitation erosion of impeller tip of aeroengine booster pump impeller | |
| CN106956079A (en) | A kind of method that metal surface micro-crack is made in micro- consolidation of laser up | |
| CN110405375A (en) | The method of double transition zone REPAIR WELDING residual crackles | |
| CN103920999A (en) | Magnetron laser bionic compound reinforcing method | |
| CN103934551B (en) | Surface mechanical attrition treatment and ultrasonic synergistic assist dissimilar metal TIG welding-braze method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170308 Termination date: 20190529 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |