CN109590289A - A kind of method of valve non-planar surfaces laser cleaning - Google Patents
A kind of method of valve non-planar surfaces laser cleaning Download PDFInfo
- Publication number
- CN109590289A CN109590289A CN201811605762.9A CN201811605762A CN109590289A CN 109590289 A CN109590289 A CN 109590289A CN 201811605762 A CN201811605762 A CN 201811605762A CN 109590289 A CN109590289 A CN 109590289A
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- Prior art keywords
- laser cleaning
- planar surfaces
- laser
- valve
- cleaning
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- 238000004140 cleaning Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000002474 experimental method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000000571 coke Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 241000009298 Trigla lyra Species 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Cleaning In General (AREA)
Abstract
The present invention provides a kind of method of valve non-planar surfaces laser cleaning, is related to laser cleaning technique.Technological parameter is determined by infrastest, according to can reach the defocusing amount range of clean rate requirement and the maximum height difference of non-planar surfaces, the relative position for determining the laser spot and surface to be cleaned that carry out laser cleaning, the laser cleaning of non-planar surfaces is carried out in this, as parameter.The present invention is of great significance for the laser cleaning of valve non-planar surfaces, has expanded the scope of application of the technology.
Description
Technical field
The present invention relates to laser cleaning technique fields, more particularly to a kind of side of valve non-planar surfaces laser cleaning
Method.
Background technique
Valve is mainly used to the logical of fluid in control piper as control element important in a kind of modern crafts system
Disconnected, flow direction, flow, pressure and temperature etc., since its operating condition degradation failure rate is high, in traditional maintenance, valve is waste and old
It needs to update later, it is not only at high cost, and waste of resource, pollution environment, therefore valve green remanufacturing is increasingly by wide
It is general, and the cleaning of waste and old valve is the important ring during valve remanufactures.
Compared with traditional cleaning method, the laser cleaning technique as novel green cleaning technique is based on laser and object
Matter interaction develops, and has that free from environmental pollution, cleaning effect is good, control precision is high, small to substrate damage etc. excellent
Point, the technology have a good application prospect in terms of the cleaning of valve.But due to lacking deep theoretical research and by mesh
The limitation of preceding equipment and technology, there is no cleaning in valve, field is expanded to be applied the technology.
At present for the research of laser cleaning and application primarily directed in planar structure, and in valve each component structure
Form is various, and surface characteristics is complicated, and during laser cleaning, laser spot (defocusing amount) at a distance from surface to be cleaned becomes
Uncontrollable factor cannot such as control interest well and chase after, it will the variation for causing input energy causes cleaning not exclusively or excessively clear
It washes, or even causes the damage of matrix.During laser cleaning, by the auxiliary of feedback system, laser can be greatly reduced
Cleaning difficulty promotes cleaning effect, but this requirement for hardware is very high, substantially increases the complexity of equipment and adds
Cost.Therefore how under the conditions of opened loop control, according to valve surface feature, the high-effect high-quality of valve non-planar surfaces is realized
Laser cleaning has practical significance.
Summary of the invention
During above-mentioned valve laser cleaning, the defocusing amount due to caused by non-planar surfaces structure feature and heat are defeated
Enter the problems such as changing, it is an object of that present invention to provide a kind of technique sides of valve non-planar surfaces high-effect high-quality laser cleaning
Method.
To achieve the purpose of the present invention, the technical solution of the present invention is as follows:
A kind of method of valve non-planar surfaces laser cleaning, which is characterized in that in accordance with the following steps:
Step 1: determining basic technological parameters；
Step 2: determining defocusing amount range；
Step 3: determining focal position；
Step 4: the laser cleaning of non-planar surfaces is carried out with determining each technological parameter.
It determines and carries out according to the requirement of clean rate by the laser cleaning test of valve specifically, the step 1 refers to
Three average laser power of laser cleaning, pulsewidth and pulse frequency basic technological parameters.
Specifically, the step 2, which refers to, carries out different defocusing amounts according to three basic technological parameters determined using step 1
Laser cleaning experiment, obtain the defocusing amount d that can reach clean rate requirementfRange :-b≤df≤ a, wherein a > 0, b > 0.According to
The difference of situations such as pollutant kind of surface to be cleaned, thickness, defocusing amount dfRange is different, that is, a, b the two
Value is also different.
Specifically, the step 3 refers to when the lowest part of non-planar surfaces to be cleaned and the difference in height d of highest point meet
When d≤a+b, middle position of the laser spot of the carry out laser cleaning determined between lowest part and highest point.
Specifically, the step 4 refers to the technological parameter determined according to step 1- step 3, average laser power, arteries and veins are set
The relative position of width, pulse frequency, defocusing amount range, laser spot and surface to be cleaned carries out swashing for valve non-planar surfaces
Light cleaning.
By above method step, the laser cleaning of valve non-planar surfaces can be realized.
The invention has the advantages that the method by easily controlling defocusing amount, realizes that the valve under the conditions of opened loop control is non-
The laser cleaning of plane surface.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is non-planar surfaces laser cleaning schematic diagram.
Fig. 2 is the photo after the non-planar surfaces laser cleaning that difference in height is 2mm.
Fig. 3 is the photo after the non-planar surfaces laser cleaning that difference in height is 13mm.
Specific embodiment
Presently in connection with attached drawing, the present invention is described in detail.This figure is simplified schematic diagram, is only illustrated in a schematic way
Basic structure of the invention, therefore it only shows the composition relevant to the invention.
Fig. 1 is non-planar surfaces laser cleaning schematic diagram, and in figure, A indicates the highest point of non-planar surfaces；B indicates non-flat
The lowest part on face surface；The difference in height of d expression non-planar surfaces lowest part and highest point；O indicates to carry out laser when laser cleaning
The position of focus.The distance between A and B in figure are d, and d≤a+b.
Case study on implementation 1:
Step 1: by laser cleaning engineer testing, the technological parameter of determining laser cleaning are as follows: average laser power
100W, pulsewidth 100nm, pulse frequency 100KHZ.
Step 2: being tested, obtained by the laser cleaning that three basic technological parameters that step 1 determines carry out different defocusing amounts
To the defocusing amount d that can reach clean rate requirementfRange: -4mm≤df≤5mm。
Step 3: as the lowest part of non-planar surfaces to be cleaned and the difference in height d=2mm of highest point, meet d≤a+b,
Middle position of the laser spot of determining carry out laser cleaning between lowest part and highest point.
Step 4: according to step 1- step 3 determine technological parameter, setting average laser power, pulsewidth, pulse frequency, from
The relative position of coke amount range, laser spot and surface to be cleaned, carries out the laser cleaning of non-planar surfaces, the surface after cleaning
As shown in Fig. 2, the paint layer of non-planar surfaces has obtained effective removal.
Case study on implementation 2:
Step 1: by laser cleaning engineer testing, the technological parameter of determining laser cleaning are as follows: average laser power
100W, pulsewidth 100nm, pulse frequency 200KHZ.
Step 2: being tested, obtained by the laser cleaning that three basic technological parameters that step 1 determines carry out different defocusing amounts
To the defocusing amount d that can reach clean rate requirementfRange: -7mm≤df≤8mm。
Step 3: as the lowest part of non-planar surfaces to be cleaned and the difference in height d=13mm of highest point, meet d≤a+b,
Middle position of the laser spot of determining carry out laser cleaning between lowest part and highest point.
Step 4: according to step 1- step 3 determine technological parameter, setting average laser power, pulsewidth, pulse frequency, from
The relative position of coke amount range, laser spot and surface to be cleaned, carries out the laser cleaning of non-planar surfaces, the surface after cleaning
As shown in figure 3, the paint layer of non-planar surfaces is effectively removed.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff
Various changes and amendments can be carried out without departing from the scope of the present invention completely.The technical scope of this invention is not
The content being confined on specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (5)
1. a kind of method of valve non-planar surfaces laser cleaning, it is characterised in that: the following steps are included:
Step 1: determining basic technological parameters；
Step 2: determining defocusing amount range；
Step 3: determining focal position；
Step 4: the laser cleaning of non-planar surfaces is carried out with determining each technological parameter.
2. the method for valve non-planar surfaces laser cleaning as described in claim 1, it is characterised in that: the step 1 refers to
It is tested by the laser cleaning fundamental technology of valve, according to the requirement of clean rate, determines that the laser for carrying out laser cleaning is averaged function
Three rate, pulsewidth and pulse frequency basic technological parameters.
3. the method for valve non-planar surfaces laser cleaning as claimed in claim 2, it is characterised in that: the step 2 refers to
The laser cleaning experiment that different defocusing amounts are carried out according to three basic technological parameters determined using step 1, obtains can reach clear
The defocusing amount d that clean rate requiresfRange :-b≤df≤ a, wherein a > 0, b > 0.
4. the method for valve non-planar surfaces laser cleaning as claimed in claim 3, it is characterised in that: the step 3 refers to
When the difference in height d of the lowest part of non-planar surfaces to be cleaned and highest point meets d≤a+b, determines and carry out laser cleaning
Middle position of the laser spot between lowest part and highest point.
5. the method for valve non-planar surfaces laser cleaning as claimed in claim 4, it is characterised in that: the step 4 refers to
According to the technological parameter that step 1- step 3 determines, average laser power, pulsewidth, pulse frequency, defocusing amount range, laser are set
The relative position of focus and surface to be cleaned carries out the laser cleaning of valve non-planar surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811605762.9A CN109590289A (en) | 2018-12-27 | 2018-12-27 | A kind of method of valve non-planar surfaces laser cleaning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811605762.9A CN109590289A (en) | 2018-12-27 | 2018-12-27 | A kind of method of valve non-planar surfaces laser cleaning |
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| Publication Number | Publication Date |
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| CN109590289A true CN109590289A (en) | 2019-04-09 |
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| CN201811605762.9A Pending CN109590289A (en) | 2018-12-27 | 2018-12-27 | A kind of method of valve non-planar surfaces laser cleaning |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112719573A (en) * | 2020-12-09 | 2021-04-30 | 成都宏明双新科技股份有限公司 | Method for efficiently improving laser etching efficiency of product |
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|---|---|---|---|---|
| WO1996032220A1 (en) * | 1995-04-13 | 1996-10-17 | Vernay Laboratories, Inc. | Method and apparatus for minimizing degradation of equipment in a laser cleaning technique |
| CN103817113A (en) * | 2014-03-14 | 2014-05-28 | 华中科技大学 | Metallic surface dirt laser cleaning system and method |
| CN106493122A (en) * | 2016-10-27 | 2017-03-15 | 苏州菲镭泰克激光技术有限公司 | The laser accurate cleaning device of part and method |
| CN106513380A (en) * | 2016-10-27 | 2017-03-22 | 苏州菲镭泰克激光技术有限公司 | Laser cleaning device and method for multi-hole reticulate structure object |
| CN107252797A (en) * | 2017-06-13 | 2017-10-17 | 苏州菲镭泰克激光技术有限公司 | Wide focal regions laser cleaning method and device |
| CN107377530A (en) * | 2017-07-26 | 2017-11-24 | 中国科学院宁波材料技术与工程研究所 | Laser spot control system and its application, laser cleaning head |
| CN107598364A (en) * | 2017-11-09 | 2018-01-19 | 云南电网有限责任公司临沧供电局 | A kind of Laser Processing and focus fixing device and method based on CCD imagings |
| CN109047182A (en) * | 2018-08-15 | 2018-12-21 | 中车青岛四方机车车辆股份有限公司 | A kind of Al-Mg alloy surface oxidation film laser cleaning technique |
-
2018
- 2018-12-27 CN CN201811605762.9A patent/CN109590289A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996032220A1 (en) * | 1995-04-13 | 1996-10-17 | Vernay Laboratories, Inc. | Method and apparatus for minimizing degradation of equipment in a laser cleaning technique |
| CN103817113A (en) * | 2014-03-14 | 2014-05-28 | 华中科技大学 | Metallic surface dirt laser cleaning system and method |
| CN106493122A (en) * | 2016-10-27 | 2017-03-15 | 苏州菲镭泰克激光技术有限公司 | The laser accurate cleaning device of part and method |
| CN106513380A (en) * | 2016-10-27 | 2017-03-22 | 苏州菲镭泰克激光技术有限公司 | Laser cleaning device and method for multi-hole reticulate structure object |
| CN107252797A (en) * | 2017-06-13 | 2017-10-17 | 苏州菲镭泰克激光技术有限公司 | Wide focal regions laser cleaning method and device |
| CN107377530A (en) * | 2017-07-26 | 2017-11-24 | 中国科学院宁波材料技术与工程研究所 | Laser spot control system and its application, laser cleaning head |
| CN107598364A (en) * | 2017-11-09 | 2018-01-19 | 云南电网有限责任公司临沧供电局 | A kind of Laser Processing and focus fixing device and method based on CCD imagings |
| CN109047182A (en) * | 2018-08-15 | 2018-12-21 | 中车青岛四方机车车辆股份有限公司 | A kind of Al-Mg alloy surface oxidation film laser cleaning technique |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112719573A (en) * | 2020-12-09 | 2021-04-30 | 成都宏明双新科技股份有限公司 | Method for efficiently improving laser etching efficiency of product |
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Application publication date: 20190409 |
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