CN103014250A - Pollution-free composite adsorption and restriction layer and pollution-free laser shock peening method - Google Patents
Pollution-free composite adsorption and restriction layer and pollution-free laser shock peening method Download PDFInfo
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- CN103014250A CN103014250A CN2012105712446A CN201210571244A CN103014250A CN 103014250 A CN103014250 A CN 103014250A CN 2012105712446 A CN2012105712446 A CN 2012105712446A CN 201210571244 A CN201210571244 A CN 201210571244A CN 103014250 A CN103014250 A CN 103014250A
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Abstract
The invention relates to a pollution-free composite adsorption and restriction layer and a pollution-free laser shock peening method; the pollution-free composite adsorption and restriction layer is characterized by comprising a black adhesive tape and a piece of organic glass, wherein two sides of the black adhesive tape are coated with pressure-sensitive adhesive, and one side is adhered with the organic glass which is 1-3mm in thickness. Compared with the conventional laser shock peening method, the pollution-free composite adsorption and restriction layer and the pollution-free laser shock peening method are applicable to the laser shock peening processing requiring no pollution to the ambient environment since the organic glass or plastic film only cracks but not is broken or splashes because of a certain tenacity.
Description
Technical field
The invention belongs to the metal surface properties modification field, be specifically related to a kind of free of contamination laser shock peening method, be specially a kind of laser shock peening method that surrounding environment is polluted that do not produce
Background technology
Reiforcing laser impact technology (LSP) is to utilize high power density (10
9W/cm
2), short pulse (ns level) laser irradiation metal material surface, produce plasma stock wave and to internal communication, produce viscous deformation at material surface, form simultaneously intensive, stable dislocation structure and crystal grain thinning (" build up " mechanism), and residual very large residual compressive stress (" stress reinforced " mechanism).This technology can be improved the mechanical property of material effectively, especially can improve significantly antifatigue and the anti-stress corrosion performance of material.
In the conventional laser shock peening technology, constrained layer material adopts water or glass, these materials subject plasma shock wave in strengthening process can produce fragmentation, splash, water or the glass that splashes when the on-the-spot reinforcement of the needs such as airframe, engine can damage, the Other Instruments of injuring parts, can't use.
Summary of the invention
The technical problem that solves
For fear of the deficiencies in the prior art part, the present invention proposes a kind of pollution-free composite absorption restraint layer and pollution-free laser impact intensified method, solves the problem that existing laser impact intensified generation surrounding environment is polluted.
Technical scheme
A kind of pollution-free composite absorption constrained layer material for laser reinforcing is characterized in that comprising black tape and synthetic glass; The two-sided non-setting adhesive that scribbles of black tape, one side is wherein pasted the thick synthetic glass of 1-3mm.
Described employing plastics film substitutes synthetic glass.
The transmittance of described plastics film or synthetic glass is more than 90%.
The described pollution-free composite absorption constrained layer material of a kind of employing carries out laser shock peening method, and the position that it is characterized in that strengthening is less than a laser facula area, and concrete steps are as follows:
Step 1: treat that the strengthening section site surface clears up, it is dirty to remove the surface;
Step 2: the black tape layer of pollution-free composite absorption restraint layer sticked on treat the strengthening section site surface;
Step 3: the processing requirement according to being reinforced material, laser parameter is set, laser spot center is aimed at strengthening section site surface center, send laser and finish reinforcement processing.
The described pollution-free composite absorption constrained layer material of a kind of employing carries out laser shock peening method, and the position that it is characterized in that strengthening is greater than a laser facula area, and concrete steps are as follows:
Step 1: treat that the strengthening section site surface clears up, it is dirty to remove the surface;
Step 2: the synthetic glass on the pollution-free composite absorption restraint layer or plastics film are cut into a plurality of squares that the length of side is 2 times of the laser facula length of sides, and the mode of then joining with the length of side sticks on to stick on behind the pollution-free composite absorption restraint layer of formation on the black tape treats the strengthening section site surface;
Step 3: the processing requirement according to being reinforced material, laser parameter is set, adopt square laser facula, laser spot center is aimed at the square surface center one by one, laser is sent at each square surface center finish reinforcement processing;
Step 4: remove pollution-free composite absorption restraint layer, according to the pollution-free composite absorption restraint layer of another piece of step 2 preparation, along the position length of side of pasting for the first time laser facula length of side that moves to right, then repeating step 3;
Step 5: remove pollution-free composite absorption restraint layer, according to the pollution-free composite absorption restraint layer of step 2 another piece of preparation, the length of side of paste position moves down a laser facula length of side along the first time, and then repeating step 3;
Step 6: remove pollution-free composite absorption restraint layer, according to the pollution-free composite absorption restraint layer of another piece of step 2 preparation, along the length of side of the position that step 4 the is pasted laser facula length of side that moves to right, then repeating step 3 is finished and is strengthened processing.
Beneficial effect
A kind of pollution-free composite absorption restraint layer and pollution-free laser impact intensified method that the present invention proposes, with a kind of pollution-free composite absorption constrained layer material, and the laser impact intensified method that adopts this material to carry out, compare with the conventional laser shock peening, because synthetic glass or plastics film have certain toughness, only can break during reinforcement, can not produce fragmentation and splash, be applicable to require to the not laser impact intensified processing of pollution of surrounding environment.
Description of drawings
Fig. 1: pollution-free composite absorption restraint layer structural representation;
Fig. 2: hot spot overlap joint synoptic diagram;
1, the two-sided black tape that scribbles non-setting adhesive, 2, acrylic, 3, workpiece, 4, laser, 5, pad pasting is strengthened the position for the first time, 6, pad pasting is strengthened the position for the second time, 7, pad pasting is strengthened the position for the third time, 8, the 4th times pad pasting is strengthened positions.
Embodiment
Now in conjunction with the embodiments, the invention will be further described for accompanying drawing:
Embodiment 1:
Such as the two-sided black tape 1 that scribbles non-setting adhesive of pollution-free composite absorption restraint layer lower floor's employing in Fig. 1 present embodiment, the thick acrylic board 2 of 2mm is adopted on the upper strata.Remove the protective membrane of acrylic board 2, be attached on the black tape, add and man-hour the another side of black tape is attached to workpiece surface to be processed 3.
Handled workpiece is that diameter is the limit, aluminium alloy aperture hole of 2mm in the present embodiment, and treatment process may further comprise the steps:
Step 1: removing surface, limit, aperture hole is dirty;
Step 2: pollution-free composite absorption restraint layer is sticked on orifice surface;
Step 3: laser energy 2J, spot diameter 4mm are set, with laser spot center alignment apertures center, send laser and finish reinforcement processing.
Embodiment 2:
Such as the two-sided black tape 1 that scribbles non-setting adhesive of pollution-free composite absorption restraint layer lower floor's employing in Fig. 1 present embodiment, the thick acrylic board 2 of 2mm is adopted on the upper strata.Remove first the protective membrane of acrylic board 2 one sides, then acrylic board 2 is cut into the one by one little square that the length of side is 8mm, again black tape is attached on the acrylic board 2.Add and man-hour the another side of black tape is attached to workpiece surface to be processed 3, then remove the protective membrane of acrylic board 2 another sides.
Handled workpiece is the aluminium horizontal panel material in the present embodiment, and treatment process may further comprise the steps:
Step 1: remove and treat that the strengthening section site surface is dirty;
Step 2: with 2 layers of the acrylics on the pollution-free composite absorption restraint layer, being cut into the length of side is the one by one square of 8mm;
Step 3: pollution-free composite absorption restraint layer sticked on treat the strengthening section site surface;
Step 4: laser energy 2j, square hot spot length of side 4mm are set, laser spot center is aimed at square center on 2 layers of the acrylics, send one by one laser and finish zone 5 and strengthen processing.
Step 5: remove pollution-free composite absorption restraint layer, repeating step 2.Pollution-free composite absorption restraint layer sticked on treat the strengthening section site surface, the position that pollution-free composite absorption restraint layer is pasted is with respect to the 4mm that moves to right of the position in the step 3, and repeating step 4 is finished zone 6 and strengthened processing.
Step 6: remove pollution-free composite absorption restraint layer, repeating step 2.Pollution-free composite absorption restraint layer sticked on treat the strengthening section site surface, the position that pollution-free composite absorption restraint layer is pasted moves down 4mm with respect to the position in the step 3, and repeating step 4 is finished zone 7 and strengthened processing.
Step 7: remove pollution-free composite absorption restraint layer, repeating step 2.Pollution-free composite absorption restraint layer sticked on treat the strengthening section site surface, the position that pollution-free composite absorption restraint layer is pasted is with respect to the 4mm that moves to right of the position in the step 6, and repeating step 4 is finished the processing of the regional Final 8.
Aluminum alloy materials is carried out laser impact intensified processing through aforesaid method, acrylic does not produce fragmentation and splashes in the impact process.Surface residual stress level and the microtexture of shock zone are compared with black tape absorption layer, the water constraint layer technique of same laser parameter, do not have notable difference.
Claims (5)
1. a pollution-free composite absorption constrained layer material that is used for laser reinforcing is characterized in that comprising black tape and synthetic glass; The two-sided non-setting adhesive that scribbles of black tape, one side is wherein pasted the thick synthetic glass of 1-3mm.
2. described pollution-free composite absorption constrained layer material for laser reinforcing according to claim 1, it is characterized in that: described employing plastics film substitutes synthetic glass.
3. described pollution-free composite absorption constrained layer material for laser reinforcing according to claim 1 and 2, it is characterized in that: the transmittance of described plastics film or synthetic glass is more than 90%.
4. one kind is adopted described each the pollution-free composite absorption constrained layer material of claim 1 ~ 3 to carry out laser shock peening method, and the position that it is characterized in that strengthening is less than a laser facula area, and concrete steps are as follows:
Step 1: treat that the strengthening section site surface clears up, it is dirty to remove the surface;
Step 2: the black tape layer of pollution-free composite absorption restraint layer sticked on treat the strengthening section site surface;
Step 3: the processing requirement according to being reinforced material, laser parameter is set, laser spot center is aimed at strengthening section site surface center, send laser and finish reinforcement processing.
5. one kind is adopted described each the pollution-free composite absorption constrained layer material of claim 1 ~ 3 to carry out laser impact intensified
Method, the position that it is characterized in that strengthening is greater than a laser facula area, and concrete steps are as follows:
Step 1: treat that the strengthening section site surface clears up, it is dirty to remove the surface;
Step 2: the synthetic glass on the pollution-free composite absorption restraint layer or plastics film are cut into a plurality of squares that the length of side is 2 times of the laser facula length of sides, and the mode of then joining with the length of side sticks on to stick on behind the pollution-free composite absorption restraint layer of formation on the black tape treats the strengthening section site surface;
Step 3: the processing requirement according to being reinforced material, laser parameter is set, adopt square laser facula, laser spot center is aimed at the square surface center one by one, laser is sent at each square surface center finish reinforcement processing;
Step 4: remove pollution-free composite absorption restraint layer, according to the pollution-free composite absorption restraint layer of another piece of step 2 preparation, along the position length of side of pasting for the first time laser facula length of side that moves to right, then repeating step 3;
Step 5: remove pollution-free composite absorption restraint layer, according to the pollution-free composite absorption restraint layer of step 2 another piece of preparation, the length of side of paste position moves down a laser facula length of side along the first time, and then repeating step 3;
Step 6: remove pollution-free composite absorption restraint layer, according to the pollution-free composite absorption restraint layer of another piece of step 2 preparation, along the length of side of the position that step 4 the is pasted laser facula length of side that moves to right, then repeating step 3 is finished and is strengthened processing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105712446A CN103014250A (en) | 2012-12-25 | 2012-12-25 | Pollution-free composite adsorption and restriction layer and pollution-free laser shock peening method |
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|---|---|---|---|
| CN2012105712446A CN103014250A (en) | 2012-12-25 | 2012-12-25 | Pollution-free composite adsorption and restriction layer and pollution-free laser shock peening method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1404954A (en) * | 2002-09-25 | 2003-03-26 | 江苏大学 | Flexible lamina for laser impact treatment |
| US6677037B1 (en) * | 2000-09-13 | 2004-01-13 | General Electric Company | Laser shock peening tape, method and article |
| CN101537534A (en) * | 2009-04-20 | 2009-09-23 | 西安天瑞达光电技术发展有限公司 | Superimposing method of circular light spot laser shock strengthening tracks |
| CN102409156A (en) * | 2011-11-17 | 2012-04-11 | 江苏大学 | Micro-porous member strengthening method for hollow laser-induced shock wave |
-
2012
- 2012-12-25 CN CN2012105712446A patent/CN103014250A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6677037B1 (en) * | 2000-09-13 | 2004-01-13 | General Electric Company | Laser shock peening tape, method and article |
| CN1404954A (en) * | 2002-09-25 | 2003-03-26 | 江苏大学 | Flexible lamina for laser impact treatment |
| CN101537534A (en) * | 2009-04-20 | 2009-09-23 | 西安天瑞达光电技术发展有限公司 | Superimposing method of circular light spot laser shock strengthening tracks |
| CN102409156A (en) * | 2011-11-17 | 2012-04-11 | 江苏大学 | Micro-porous member strengthening method for hollow laser-induced shock wave |
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Application publication date: 20130403 |