CN118046099A - Rectangular pulse interference light spot array implementation method for efficient disordered laser texturing - Google Patents
Rectangular pulse interference light spot array implementation method for efficient disordered laser texturing Download PDFInfo
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- CN118046099A CN118046099A CN202410383730.8A CN202410383730A CN118046099A CN 118046099 A CN118046099 A CN 118046099A CN 202410383730 A CN202410383730 A CN 202410383730A CN 118046099 A CN118046099 A CN 118046099A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000007788 roughening Methods 0.000 claims abstract description 22
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 239000005350 fused silica glass Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 description 14
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000010960 cold rolled steel Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000010892 electric spark Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005480 shot peening Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
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Abstract
The invention relates to a method for realizing a rectangular pulse interference light spot array for efficient disordered laser texturing, which comprises the following steps: establishing an optical system, wherein the optical system comprises a laser, a quadrangular prism and a convex lens; the laser emitted by the laser sequentially passes through a quadrangular prism and a convex lens, the quadrangular prism splits incident laser, the convex lens converges laser beams separated from each other to form a rectangular pulse interference light spot array, and the rectangular pulse interference light spot array consists of a plurality of interference light spots; forming a plurality of texturing pits on the surface to be textured by adopting the rectangular pulse interference light spot array through single impact; the surface to be roughened and the rectangular pulse interference light spot array do relative two-dimensional random motion so as to realize efficient disordered laser roughening of the surface to be roughened. According to the invention, the rectangular pulse interference light spot array is adopted, so that a plurality of roughening pits are formed on the surface to be roughened by single impact, and the laser roughening efficiency is improved.
Description
Technical Field
The invention relates to the technical field of rectangular pulse interference light spot array implementation methods, in particular to a rectangular pulse interference light spot array implementation method for efficient disordered laser texturing.
Background
In recent years, due to rapid development of industries such as automobiles, electronic equipment and the like, demands of high-quality cold-rolled steel strips are increased, and performance and quality requirements of users on the cold-rolled steel strips are also gradually increased. The steel generates larger plastic deformation in the cold rolling process, and the yield point of the steel is improved. The thickness dimension of the cold-rolled strip steel is accurate, and the surface is smooth. The high-quality cold-rolled strip steel product not only needs to have excellent material quality, but also needs to meet strict requirements on surface quality, and ensures that the strip steel has excellent surface coating performance. The key to influence the surface quality of cold-rolled steel strip is the roller performance. The roller is a main working part for continuously and plastically deforming the strip steel on the rolling mill and mainly comprises a roller body, a roller neck and a shaft head, wherein the roller body is a part actually participating in rolling the strip steel, the surface of the roller body is generally provided with a smooth cylindrical or grooved structure, and the strip steel is rolled under the drive of a motor.
The roller with smooth surface has small friction coefficient, which is easy to scratch and scratch the surface of the strip steel. The roughening technique of the roller firstly needs to grind and polish the roller to basically reach or approach the mirror surface level, and then utilizes the roughening treatment technique to form micro pits with a certain number and depth on the roller surface to generate a special surface roughening state, so that the rolled strip steel obtains better surface performance.
The roller roughening technology improves the added value of the cold-rolled strip steel, and the roughening technology is one of the most advanced roughening technologies at present. However, compared with the technologies such as mechanical shot peening, electric spark peening and the like, the laser peening technology has low efficiency; the production efficiency of the laser texturing technology is improved, and the method is a key technical problem to be solved in the industrial application of the laser texturing technology.
Disclosure of Invention
The invention aims at a method for realizing a rectangular pulse interference light spot array for efficient disordered laser texturing, and a plurality of texturing pits are formed on a surface to be textured by single impact by adopting the rectangular pulse interference light spot array so as to improve the laser texturing efficiency.
In order to solve the problems in the prior art, the invention provides a method for realizing a rectangular pulse interference light spot array for efficient disordered laser texturing, which comprises the following steps:
Establishing an optical system, wherein the optical system comprises a laser, a quadrangular prism and a convex lens; the laser emitted by the laser sequentially passes through a quadrangular prism and a convex lens, the quadrangular prism splits incident laser, the convex lens converges laser beams separated from each other to form a rectangular pulse interference light spot array, and the rectangular pulse interference light spot array consists of a plurality of interference light spots;
forming a plurality of texturing pits on the surface to be textured by adopting the rectangular pulse interference light spot array through single impact;
the surface to be roughened and the rectangular pulse interference light spot array do relative two-dimensional random motion so as to realize efficient disordered laser roughening of the surface to be roughened.
Preferably, in the implementation method of the rectangular pulse interference light spot array for efficient disordered laser texturing,
The size of the rectangular pulse interference light spot array is changed along with the change of parameters of the quadrangular prism, parameters of the convex lens and/or laser wavelength; the total number of interference spots varies with the parameters of the quadrangular prism and/or the laser wavelength.
Preferably, in the implementation method of the rectangular pulse interference light spot array for efficient disordered laser texturing,
When the angle of the quadrangular prism is adjusted, the distance between the quadrangular prism and the convex lens is adjusted according to the angle of the quadrangular prism, at the moment, the size of the rectangular pulse interference light spot array is changed, and the total number of interference light spots is changed.
Preferably, in the implementation method of the rectangular pulse interference light spot array for efficient disordered laser texturing,
After the focal length of the convex lens is adjusted, the distance between the quadrangular prism and the convex lens is adjusted according to the focal length of the convex lens, at the moment, the size of the rectangular pulse interference light spot array is changed, and the total number of interference light spots is unchanged.
Preferably, in the implementation method of the rectangular pulse interference light spot array for efficient disordered laser texturing,
When the laser wavelength is changed, the distance between the quadrangular prism and the convex lens is adjusted according to the laser wavelength, at the moment, the size of the rectangular pulse interference light spot array is changed, and the total number of interference light spots is changed.
Preferably, in the method for realizing the rectangular pulse interference light spot array for efficient disordered laser texturing, a quadrangular pyramid mirror and a convex lens determine materials according to laser energy.
Preferably, in the method for realizing the rectangular pulse interference light spot array for efficient disordered laser texturing, the quadrangular pyramid lens is BK7 glass, quartz glass or fused quartz glass, and the convex lens is BK7 glass, quartz glass or fused quartz glass.
Compared with the prior art, the invention has the following advantages:
(1) According to the invention, the rectangular pulse interference light spot array is adopted, so that a plurality of roughening pits are formed on the surface to be roughened by single impact, and the laser roughening efficiency is improved.
(2) According to the invention, the rectangular pulse interference light spot array with high uniformity is finally obtained by adjusting and optimizing the optical system structure.
(3) The rectangular pulse interference light spot array has small energy loss.
Drawings
FIG. 1 is a schematic diagram of an optical system structure according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a distance between a quadrangular prism and a convex lens according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing a spacing between a convex lens and a roughened surface according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an array of simulated rectangular pulsed interference spots according to an embodiment of the present invention;
FIG. 5 is a roughened pit pattern provided by an embodiment of the present invention;
fig. 6 is a roughened pit pattern under a microscope provided by an embodiment of the present invention.
Wherein, 1-laser; 2-quadrangular pyramid mirror; 3-convex lenses; 4-surface to be roughened.
Detailed Description
Specific embodiments of the present invention will be described in more detail below with reference to the drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.
Also, the terms "first," "second," and the like, are used hereinafter to distinguish between similar elements and not necessarily to describe a particular order or chronological order. It is to be understood that such terms so used are interchangeable under appropriate circumstances. Similarly, if a method described herein comprises a series of steps, the order of the steps presented herein is not necessarily the only order in which the steps may be performed, and some of the described steps may be omitted and/or some other steps not described herein may be added to the method.
The roller roughening technology improves the added value of the cold-rolled strip steel, and the roughening technology is one of the most advanced roughening technologies at present. However, compared with the technologies such as mechanical shot peening, electric spark peening and the like, the laser peening technology has low efficiency; the production efficiency of the laser texturing technology is improved, and the method is a key technical problem to be solved in the industrial application of the laser texturing technology.
Therefore, it is necessary to provide a method for realizing a rectangular pulse interference light spot array for efficient disordered laser texturing, which comprises the following steps:
Establishing an optical system comprising a laser, a quadrangular prism 2 and a convex lens 3; as shown in fig. 1, a laser 1, a quadrangular prism 2 (in a laser texturing experiment, a substrate may be added on one surface of the quadrangular prism 2, the surface faces a convex lens 3), the convex lens 3 and a surface to be roughened 4 are sequentially arranged from left to right in the figure, laser light emitted by the laser 1 sequentially passes through the quadrangular prism 2 and the convex lens 3, the quadrangular prism 2 splits incident laser light, and the convex lens 3 converges laser beams separated from each other to form a rectangular pulse interference light spot array, as shown in fig. 4, the rectangular pulse interference light spot array is composed of a plurality of interference light spots;
forming a plurality of texturing pits on the surface 4 to be textured by adopting the rectangular pulse interference light spot array through single impact;
The surface 4 to be roughened and the rectangular pulse interference light spot array do relative two-dimensional random motion (fig. 1 shows that the surface 4 to be roughened do two-dimensional random motion, and the rectangular pulse interference light spot array does not move), so that the efficiency of disordered laser roughening is improved, and the efficient disordered laser roughening of the surface 4 to be roughened is realized.
Preferably, in the implementation method of the rectangular pulse interference light spot array for efficient disordered laser texturing, the size of the rectangular pulse interference light spot array is changed along with the change of parameters of the quadrangular prism 2, parameters of the convex lens 3 and/or laser wavelength; the total number of interference spots varies with the parameters of the quadrangular prism 2 and/or the laser wavelength.
For example: (1) After the angle of the quadrangular prism 2 is adjusted, the distance between the quadrangular prism 2 and the convex lens 3 is adjusted according to the angle of the quadrangular prism 2, and at this time, the size of the rectangular pulse interference light spot array is changed, and the total number of interference light spots is changed. (2) When the focal length of the convex lens 3 is adjusted, the distance between the quadrangular prism 2 and the convex lens 3 is adjusted according to the focal length of the convex lens 3, at this time, the size of the rectangular pulse interference light spot array is changed, and the total number of interference light spots is unchanged. (3) When the laser wavelength is changed, the distance between the quadrangular prism 2 and the convex lens 3 is adjusted according to the laser wavelength, and at the moment, the size of the rectangular pulse interference light spot array is changed, and the total number of interference light spots is changed.
Preferably, in the method for realizing the rectangular pulse interference light spot array for efficient disordered laser texturing, the quadrangular pyramid mirror 2 and the convex lens 3 determine materials according to laser energy. For example: the quadrangular pyramid lens 2 is BK7 glass, quartz glass or fused quartz glass, and the convex lens 3 is BK7 glass, quartz glass or fused quartz glass.
The invention provides two embodiments, wherein the first embodiment is a simulation experiment and the second embodiment is a laser texturing experiment.
In the first embodiment, the wavelength of the laser 1 emits laser light is 1064nm, the radius of the laser beam is 13mm, the single pulse energy is 6J, as shown in fig. 2 and 3, the cone angle of the quadrangular prism 2 is 178 °, the focal length of the convex lens 3 is 750mm, the interval between the quadrangular prism 2 and the convex lens 3 is 44.6mm, and the interval between the surface to be roughened 4 and the convex lens 3 is 441.2 mm; the method comprises the steps of presenting a rectangular pulse interference light spot array, wherein the simulated rectangular pulse interference light spot array is shown in fig. 4, the rectangular pulse interference light spot array is square, the side length of the rectangular pulse interference light spot array is 5.64mm, 18 x 18 interference light spots are arranged in the rectangular pulse interference light spot array, and the distance between the interference light spots is 0.31mm. As can be seen from FIG. 4, the square laser spot interference speckle generated by the optical system provided by the invention is neat and uniform and has excellent quality.
In the second embodiment, a Surelite laser 1 (wavelength is 532 nm) is used as a light source, an optical path is built, a laser texturing experiment is carried out, the target material is an aviation aluminum material sample piece after polishing, and the size of the aviation aluminum material sample piece is 20mm x 6mm. The roughened surface obtained after a single laser shock is shown in fig. 5. When the pattern details are observed by using a microscope, as shown in fig. 6, the arrangement of the roughened pit patterns in the laser impact range is regular, which indicates that the rectangular pulse interference light spot array of the roughened pits formed by the impact is regular and uniform. A plurality of roughening pits are formed on the surface of the aviation aluminum material sample piece through single impact, and laser roughening efficiency is improved.
In summary, compared with the prior art, the invention has the following advantages:
(1) According to the invention, the rectangular pulse interference light spot array is adopted, so that a plurality of roughening pits are formed on the surface to be roughened by single impact, and the laser roughening efficiency is improved.
(2) According to the invention, the rectangular pulse interference light spot array with high uniformity is finally obtained by adjusting and optimizing the optical system structure.
(3) The rectangular pulse interference light spot array has small energy loss.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any person skilled in the art will make any equivalent substitution or modification to the technical solution and technical content disclosed in the invention without departing from the scope of the technical solution of the invention, and the technical solution of the invention is not departing from the scope of the invention.
Claims (7)
1. The method for realizing the rectangular pulse interference light spot array for the efficient disordered laser texturing is characterized by comprising the following steps of:
Establishing an optical system, wherein the optical system comprises a laser, a quadrangular prism and a convex lens; the laser emitted by the laser sequentially passes through a quadrangular prism and a convex lens, the quadrangular prism splits incident laser, the convex lens converges laser beams separated from each other to form a rectangular pulse interference light spot array, and the rectangular pulse interference light spot array consists of a plurality of interference light spots;
forming a plurality of texturing pits on the surface to be textured by adopting the rectangular pulse interference light spot array through single impact;
the surface to be roughened and the rectangular pulse interference light spot array do relative two-dimensional random motion so as to realize efficient disordered laser roughening of the surface to be roughened.
2. The method for realizing the rectangular pulse interference light spot array for the efficient disordered laser texturing according to claim 1, wherein,
The size of the rectangular pulse interference light spot array is changed along with the change of parameters of the quadrangular prism, parameters of the convex lens and/or laser wavelength; the total number of interference spots varies with the parameters of the quadrangular prism and/or the laser wavelength.
3. The method for realizing the rectangular pulse interference light spot array for the efficient disordered laser texturing according to claim 2, wherein,
When the angle of the quadrangular prism is adjusted, the distance between the quadrangular prism and the convex lens is adjusted according to the angle of the quadrangular prism, at the moment, the size of the rectangular pulse interference light spot array is changed, and the total number of interference light spots is changed.
4. The method for realizing the rectangular pulse interference light spot array for the efficient disordered laser texturing according to claim 2, wherein,
After the focal length of the convex lens is adjusted, the distance between the quadrangular prism and the convex lens is adjusted according to the focal length of the convex lens, at the moment, the size of the rectangular pulse interference light spot array is changed, and the total number of interference light spots is unchanged.
5. The method for realizing the rectangular pulse interference light spot array for the efficient disordered laser texturing of claim 2,
When the laser wavelength is changed, the distance between the quadrangular prism and the convex lens is adjusted according to the laser wavelength, at the moment, the size of the rectangular pulse interference light spot array is changed, and the total number of interference light spots is changed.
6. The method for implementing a rectangular pulse interference light spot array for efficient disordered laser texturing in accordance with claim 1, wherein the quadrangular pyramid mirror and the convex lens determine materials based on laser energy.
7. The method for realizing the rectangular pulse interference light spot array for efficient disordered laser texturing according to claim 6, wherein the quadrangular prism lens is BK7 glass, quartz glass or fused quartz glass, and the convex lens is BK7 glass, quartz glass or fused quartz glass.
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