DE3600591A1 - METHOD AND DEVICE FOR REMOVING IMPURITIES FROM THE SURFACE OF METALS BY LASER RADIATION AND SURFACE TREATED IN THIS TREATMENT - Google Patents
METHOD AND DEVICE FOR REMOVING IMPURITIES FROM THE SURFACE OF METALS BY LASER RADIATION AND SURFACE TREATED IN THIS TREATMENTInfo
- Publication number
- DE3600591A1 DE3600591A1 DE19863600591 DE3600591A DE3600591A1 DE 3600591 A1 DE3600591 A1 DE 3600591A1 DE 19863600591 DE19863600591 DE 19863600591 DE 3600591 A DE3600591 A DE 3600591A DE 3600591 A1 DE3600591 A1 DE 3600591A1
- Authority
- DE
- Germany
- Prior art keywords
- laser
- metals
- snowdon
- treatment
- removing impurities
- 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.)
- Withdrawn
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 18
- 238000000034 method Methods 0.000 title claims description 17
- 239000002184 metal Substances 0.000 title claims description 16
- 239000012535 impurity Substances 0.000 title claims description 9
- 150000002739 metals Chemical class 0.000 title claims description 5
- 230000005855 radiation Effects 0.000 title description 2
- 238000004140 cleaning Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- VZPPHXVFMVZRTE-UHFFFAOYSA-N [Kr]F Chemical compound [Kr]F VZPPHXVFMVZRTE-UHFFFAOYSA-N 0.000 claims description 3
- 230000001427 coherent effect Effects 0.000 claims description 3
- 238000000295 emission spectrum Methods 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning In General (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
K.G.Snowdon 7K.G. Snowdon 7
Verfahren und Vorrichtung zur Entfernung von Verunreinigungen von der Oberfläche von Metallen mittels Laserstrahlen und so behandelte Oberflächen.Method and device for removing contaminants from the surface of metals by means of laser beams and surfaces treated in this way.
Die vorliegende Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zum Entfernen von Verunreinigungen von der Oberfläche von Metallen mittels Laserstrahlen gemaß dem Oberbegriff des Anspruchs 1 bzw. eine Vorrichtung zur Ausführung dieses Verfahrens gemäß dem Oberbegriff des Anspruchs 5.The present invention relates to a method and an apparatus for removing contaminants from the surface of metals by means of laser beams the preamble of claim 1 or a device for performing this method according to the preamble of Claim 5.
\j/ 10 Es ist bereits beispielsweise aus der PCT-AnmeIdung WO 83/01400 bekannt, unerwünschte organische Materialien von Oberflächen von Metallen durch Bestrahlung derselben mit kohärenten Laserstrahlen zu entfernen. So werden z.B. Muschelansätze von Bootsrümpfen durch Laserbestrahlung abgesprengt.\ j / 10 It is already from the PCT application, for example WO 83/01400 discloses unwanted organic materials from surfaces of metals by irradiating them remove with coherent laser beams. E.g. Shell approaches from boat hulls by laser irradiation blasted off.
\\J Weiterhin ist es aus der Literaturstelle "Popular Science", Juli 1982, S. 82 bis 84, bekannt, außer der Behandlung von Sc hi ffsrümpfen oder zur Rost entfernung oder der Entfernung einer fotografischen Schicht von der Papierunterlage die Energie von Xenon-B Iitζ lampen auszunützen. Dünne Schichten von Anstrichen, Staub oder Mikroben etc. werden dabei verdampft oder in verkohltes abwischbares Pulver übergeführt. Es kann sogar eine mikroskopische Oberflächenschicht \\ J Furthermore, it is known from the literature reference "Popular Science" July, 1982, pp 82 to 84, known ffsrümpfen except the treatment of Sc hi or rust or the removal distance of a photographic layer from the paper base, the energy of xenon B Iitζ lamps to use. Thin layers of paint, dust or microbes etc. are evaporated or converted into charred, wipeable powder. It can even have a microscopic surface layer
K.G.Snowdon 7K.G. Snowdon 7
von Stahl in einen glasigen Zustand überführt werden. Auch wird dort vorgesch lagen,, Laser verschiedener Wellenlänge und Intensität· für soIehe Anwendungen zu testen.can be transformed into a glassy state by steel. It is also suggested there, lasers of different wavelengths and intensity · to be tested for such applications.
•Π Mit der vorliegenden Erfindung soll die Aufgabe gelöst werden, eine Metalloberfläche in möglichst kurzer Zeit von Verunreinigungen zu befreien und die Metalloberfläche möglichst nicht zu beschädigen.The object is to be achieved with the present invention a metal surface in the shortest possible time rid of impurities and the metal surface if possible not to damage it.
Gelöst wird diese Aufgabe durch die im Kennzeichen des Anspruchs 1 bzw. des Anspruchs 5 angegebenen Merkmale.This task is solved by the Claim 1 or claim 5 specified features.
Hierdurch kann der Reinigungsvorgang rechtzeitig abgebrochen werden, so daß nur die gerade erforderliche zeitliche Behandlung angewendet wird. Dadurch ist weiterhin die f Gewähr gegeben, daß die Metalloberfläche noch nicht verAs a result, the cleaning process can be terminated in good time, so that only the temporal treatment that is just required is applied. As a result, the f Guaranteed that the metal surface has not yet deteriorated
ändert wird. Dieses Verfahren ist besonders bei elektrischen Kontakten anwendbar, insbesondere wenn deren Oberflächen einen dünnen Kontaktbelag aufweisen. Elektrische Kontakte, wie sie in Schaltern oder Relais verwendet werden, werden nämlich oft während der Herstellungsprozesse mit organischen und anorganischen Materialien verunreinigt. Die Anwesenheit dieser Verunreinigungen auf der Kontaktoberfläche kann während des folgenden Gebrauchs zur Karbonisierung und/oder zur Belagbildung führen. Dies wiederum führt zu einer Reihe von Störungen, insbesondere wegen des unzulässig hohen Kontaktwiderstandes. Es wurden schon verschiedene Methoden zur Reinigung von Kontakten für die Anwendung für hohe Zuverlässigkeit vorgeschlagen. Typischerweise werden die Kontakte mit einem Lösungsmittel behandelt, das lösliche organische Rückstände entfernt. Diese Behandlung ist jedoch nicht vollkommen wirksam, da trotzdem noch Polymere und/oder anorganische Materialien auf der Oberfläche des Kontaktes haften können.will change. This procedure is especially useful with electrical Contacts applicable, especially if their surfaces have a thin contact layer. Electrical contacts, as they are used in switches or relays, namely often during the manufacturing process with organic and inorganic materials contaminated. The presence these impurities on the contact surface can be used for carbonation during the following use and / or lead to the formation of deposits. This in turn leads to a number of disturbances, in particular because of the inadmissible high contact resistance. There have been various methods of cleaning contacts for use for suggested high reliability. Typically be the contacts treated with a solvent, the soluble organic residues removed. However, this treatment is not completely effective because it still contains polymers and / or inorganic materials can adhere to the surface of the contact.
K.G.Snowdon 7K.G. Snowdon 7
Gegenstand der Erfindung ist es daher, auch dieses Problem vollkommen und kostengünstig mit möglichst geringem Zeitaufwand zu lösen.The invention therefore also addresses this problem completely and inexpensively with as little as possible Time to solve.
Gemäß einer Weiterbildung der Erfindung ist die Metalloberfläche gut reflektierend. Vorteilhaft wird eine kohärente gepulste Laserstrahlung verwendet, die eine ausreichende Intensität besitzt, um die auf der Oberfläche haftenden Verunreinigungen zu verdampfen.According to a further development of the invention, the metal surface is good reflective. A uses coherent pulsed laser radiation that has a has sufficient intensity to evaporate the impurities adhering to the surface.
Die Erfindung betrifft weiterhin eine Vorrichtung zur Beseitigung von Verunreinigungen auf reflektierenden Metalloberflächen. Diese enthält einen gepulsten Laser, * Fokussierungselemente zur Steuerung der auf die Metalloberfläche auftreffenden LaserausgangsLeistung, eine * Spektroskopeinrichtung zur Ermittlung nichtmetallischer Elemente in dem durch den Laserstrahl von der Metalloberfläche weggedampften Material und eine Rückkopplung zur Abschaltung des Lasers, wenn keine nichtmetallischen Materialien mehr im verdampften Umgebungsbereich vorhanden sind.The invention also relates to a device for removing contaminants from reflective metal surfaces. This contains a pulsed laser, * focusing elements to control the laser output power impinging on the metal surface, a * spectroscopic device to determine non-metallic elements in the material evaporated from the metal surface by the laser beam and a feedback to switch off the laser when there are no more non-metallic materials in the evaporated surrounding area available.
Weitere vorteilhafte Einzelheiten der Erfindung sind in den Unteransprüchen enthalten und nachfolgend anhand eines in der Zeichnung veranschaulichten Ausführungsbeispiels beschrieben, das hier schematisch die Ausführung einer Kontaktreinigungsvorrichtung darstellt.Further advantageous details of the invention are contained in the subclaims and below on the basis of a Described in the drawing illustrated embodiment, the here schematically the execution of a contact cleaning device represents.
Die Kontaktreinigungsvorrichtung enthält einen im Ultraviolettbereich arbeitenden gepulsten Laser 11, der über ein Schaltgerät 12 betrieben wird. Sie ist weiterhin mitThe contact cleaning device contains one in the ultraviolet range working pulsed laser 11, which is operated via a switching device 12. She is still with
K.G.Snowdon 7K.G. Snowdon 7
einem konvergierenden optischen System 13, z.B. einer Linse,versehen, durch das der Laserausgang auf einen Kontakt 14 fokussiert werden kann, üblicherweise wurde beim Ausführungsbeispiel ein Kryptonfluorid-Laser, dessen Wellenlänge in diesem Fall 249 Nanometer betrug, verwendet, aber es ist hervorzuheben, daß diese Technik nicht auf dieses Lasersystem beschränkt ist. Das Wesentliche ist dabei, daß der Laser eine genügend hohe Energiedichte aufbringen kann, um eine Verdampfung zu bewirken, und daß er eine Wellenlänge besitzen sollte, die von dem verunreinigenden Material absorbiert wird. Es wurde fest-a converging optical system 13, e.g. Lens, provided, through which the laser output can be focused on a contact 14, was usually in the embodiment, a krypton fluoride laser, whose Wavelength in this case was 249 nanometers, but it should be emphasized that this technique does not work this laser system is limited. The essential thing is that the laser has a sufficiently high energy density can apply to cause evaporation and that it should have a wavelength equal to that of the contaminating material is absorbed. It was fixed-
2 gestellt, daß eine Energiedichte von 0,1 bis 0,8 J/cm ausreicht, damit eine Verdampfung an der Oberfläche stattfindet. Da die Metalloberfläche reflektierend wirkt, tritt praktisch keine Beeinflussung des Kontaktmaterials auf. Der Verdampfungsprozeß wird durch ein Spektroskop überwacht, das den Zustand der vollkommenen Beseitigung der Verunreinigungen feststellt. Nach jedem Laserimpuls wird ein flüchtig leuchtendes Plasma auf der Seite der Verdampfung erzeugt. Das Emissionsspektrum dieses Plasmas ist natürlich charakteristisch für die vorhandenen Elemente. Das Licht des Plasmas wird von einem Fotodetektor 14" empfangen, und zwar über ein Filter 15, dessen Durchlaßbandbreite den Emissions Iinien der Elemente der nichtmetallischen Verunreinigungen entspricht, z.B. denen von Kohlenstoff und/oder Schwefel.2 put that an energy density of 0.1 to 0.8 J / cm sufficient for evaporation to take place on the surface. Since the metal surface is reflective, there is practically no influence on the contact material on. The evaporation process is monitored by a spectroscope, which shows the state of perfect elimination who detects impurities. After each laser pulse, a volatile glowing plasma appears on the side of the Evaporation generated. The emission spectrum of this plasma is of course characteristic of the elements present. The light from the plasma is received by a photodetector 14 ″, through a filter 15, the pass band width of which the emission lines of the elements of the non-metallic Impurities, e.g. those of Carbon and / or sulfur.
Der Ausgang des Fotodetektors 141 ist über einen Verstärker 16 an einem Steuerkreis 17 angeschlossen, der den Laser außer Wirkung setzt, wenn keine Emissions Iiηien mehr vor-' handen sind, d.h. wenn das gesamte verunreinigende Material von der Oberfläche entfernt ist. Der Kontakt 14The output of the photodetector 14 1 is connected via an amplifier 16 to a control circuit 17 which deactivates the laser when there are no more emissions, ie when all the contaminating material has been removed from the surface. Contact 14
K.G.Snowdon 7K.G. Snowdon 7
wird dann entfernt und weiteren Verfahrensprozessen unterworfen. Kontakte können auch Meta LLabschnitte von gedruckten Schaltungen sein.is then removed and subjected to further procedural processes. Contacts can also be Meta LL sections of printed Be circuits.
Obwohl die Erfindung in Verbindung mit elektrischen Kontakten beschrieben wurde, ist hervorzuheben, daß diese nicht hierauf beschränkt ist und sie auch bei anderen reflektierenden Metalloberflächen angewendet werden kann. In besonders vorteilhafter Weise kann diese Technik zur Behandlung von Verbindungskontakten oder von Randkontakten von gedruckten Schaltungen verwendet werden.Although the invention has been described in connection with electrical contacts, it should be emphasized that this is not is limited to this and can also be applied to other reflective metal surfaces. Especially This technique can be beneficial for treatment of connection contacts or of edge contacts of printed Circuits are used.
- Leerseite -- blank page -
Claims (8)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08501028A GB2169496B (en) | 1985-01-16 | 1985-01-16 | Cleaning metal surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3600591A1 true DE3600591A1 (en) | 1986-07-17 |
Family
ID=10572914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19863600591 Withdrawn DE3600591A1 (en) | 1985-01-16 | 1986-01-11 | METHOD AND DEVICE FOR REMOVING IMPURITIES FROM THE SURFACE OF METALS BY LASER RADIATION AND SURFACE TREATED IN THIS TREATMENT |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3600591A1 (en) |
| GB (1) | GB2169496B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988007431A1 (en) * | 1987-04-01 | 1988-10-06 | Stiwa-Fertigungstechnik Sticht Gesellschaft M.B.H. | Process and device for removing coatings with a laser beam |
| WO1989001841A1 (en) * | 1987-08-28 | 1989-03-09 | Tsentralnoe Konstruktorskoe Bjuro Unikalnogo Pribo | Method and device for laser processing of an object |
| DE3932328A1 (en) * | 1989-09-28 | 1991-04-11 | Opel Adam Ag | METHOD FOR MACHINING SURFACES HIGHLY STRESSED BY FRICTION IN INTERNAL COMBUSTION ENGINES, AND DEVICE FOR CARRYING OUT THE METHOD |
| EP0297506A3 (en) * | 1987-07-02 | 1991-11-27 | Ibm Deutschland Gmbh | Removal of particles from solid-state surfaces by laser bombardement |
| DE4142855A1 (en) * | 1991-12-20 | 1993-07-01 | Electronicon Gmbh I L | Preferentially etching metal coatings on plastic or paper foil - using pulsed laser beam operating in ultraviolet range |
| DE4241575A1 (en) * | 1992-12-10 | 1994-06-16 | Baldwin Gegenheimer Gmbh | Printing roller cleaning - uses laser beam to detach dirt and residue from surface without affecting surface character |
| DE4320408A1 (en) * | 1993-06-21 | 1994-12-22 | Fraunhofer Ges Forschung | Process-control method for the surface machining of workpieces with pulsed laser radiation |
| US5463951A (en) * | 1993-01-20 | 1995-11-07 | Baldwin-Gegenheimer Gmbh | Printing machine spray device |
| DE19617388C1 (en) * | 1996-04-30 | 1997-05-28 | Siemens Ag | Laser machining process monitoring system |
| DE10130402A1 (en) * | 2001-06-23 | 2003-01-02 | Bayerische Motoren Werke Ag | Pre-treatment monitoring procedures |
| DE10222117A1 (en) * | 2002-05-17 | 2003-12-18 | W & H Dentalwerk Buermoos Ges | Laser processing device for plasma-induced ablation |
| WO2007031135A1 (en) * | 2005-07-07 | 2007-03-22 | Main Management Inspiration Ag | Apparatus for the continuous surface cleaning of rotationally movable casting rolls of a strip-casting machine |
| CN103792215A (en) * | 2014-01-24 | 2014-05-14 | 国电科学技术研究院 | Method for rapidly measuring content of carbon element in steel |
| CN109821822A (en) * | 2019-03-13 | 2019-05-31 | 何兴 | Netted laser cleaning system and method |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3891396T1 (en) * | 1988-09-23 | 1990-09-20 | Mo Textilny I | METHOD FOR PURIFYING THE FIBER FIBER FROM VEGETABLE INGREDIENTS AND DEVICE FOR IMPLEMENTING THE SAME |
| US5151135A (en) * | 1989-09-15 | 1992-09-29 | Amoco Corporation | Method for cleaning surfaces using UV lasers |
| JP3127228B2 (en) * | 1990-06-11 | 2001-01-22 | 工業技術院長 | Metal surface modification method |
| FR2711557B1 (en) * | 1993-10-26 | 1996-01-05 | Saint Gobain Emballage | Method and device for cleaning solid elements. |
| US5620618A (en) * | 1995-04-28 | 1997-04-15 | International Business Machines Corporation | Multi-wavelength programmable laser processing mechanisms and apparatus |
| IT1282722B1 (en) * | 1996-03-01 | 1998-03-31 | Pirelli | METHOD AND APPARATUS FOR THE CLEANING OF VULCANIZATION MOLDS OF ELASTOMERIC MATERIAL ARTICLES |
| FR2752386B1 (en) * | 1996-08-14 | 1998-09-11 | Commissariat Energie Atomique | METHOD FOR CLEANING OR DECONTAMINATION OF AN OBJECT USING AN ULTRAVIOLET LASER BEAM AND DEVICE FOR IMPLEMENTING IT |
| EP0905762A1 (en) * | 1997-09-30 | 1999-03-31 | STMicroelectronics S.r.l. | Method for removing moulding residues in the fabrication of plastic packages for semiconductor devices |
| NL1018403C1 (en) * | 2000-10-05 | 2002-04-08 | Boschman Tech Bv | Method for cutting a composite structure with one or more electronic components using a laser. |
| NL1016334C2 (en) * | 2000-10-05 | 2002-04-08 | Boschman Tech Bv | A laser cutting method for a composite integrated circuit structure includes measuring the radiation emitted during cutting with a light-sensitive element and adjusting the power of the laser when a material transition is detected |
| DE10210518A1 (en) * | 2002-03-09 | 2003-10-02 | Mtu Aero Engines Gmbh | Process for stripping engine components and device for carrying out the process |
| GB0219541D0 (en) | 2002-08-22 | 2002-10-02 | Secr Defence | Method and apparatus for stand-off chemical detection |
| DE10313521B4 (en) * | 2002-12-18 | 2006-05-11 | Geringer, Michael | Device and method for removing the injection burr on housing sides of arranged in a leadframe components |
| US8859935B2 (en) * | 2012-05-22 | 2014-10-14 | General Electric Company | Method of preparing material for welding |
| CN106881311B (en) * | 2017-03-29 | 2019-04-23 | 中国人民解放军装甲兵工程学院 | A kind of underwater metal surface dirt laser cleaning waterproof equipment and its application |
| GB2582574A (en) * | 2019-03-25 | 2020-09-30 | Eaton Intelligent Power Ltd | Improved method of manufacturing a contact arrangement for a switching device with low contact resistance |
| CN109967458B (en) * | 2019-04-08 | 2022-03-01 | 哈尔滨工业大学 | A kind of marine microbial fouling laser cleaning decontamination and antifouling method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1497779A1 (en) * | 1966-04-27 | 1969-10-02 | Helmut Schneider | Method and device for generating sound or ultrasonic waves on surfaces |
| DE2740755A1 (en) * | 1976-10-07 | 1978-04-13 | Lasag Ag | METHOD OF REMOVING MATERIAL FROM A METALLIC WORKPIECE, IN PARTICULAR FOR DRILLING, USING A FOCUSED LASER BEAM IMPULSE |
| DE2943107C2 (en) * | 1979-10-25 | 1984-07-26 | Robert 6600 Saarbrücken Langen | Procedure for derusting |
| DE3310117A1 (en) * | 1982-04-05 | 1983-10-06 | Maxwell Lab | METHOD FOR PHOTOCHEMICAL DISINFECTION |
| CA1198482A (en) * | 1982-04-14 | 1985-12-24 | Thaddeus A. Wojcik | Laser decontamination method |
-
1985
- 1985-01-16 GB GB08501028A patent/GB2169496B/en not_active Expired
-
1986
- 1986-01-11 DE DE19863600591 patent/DE3600591A1/en not_active Withdrawn
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988007431A1 (en) * | 1987-04-01 | 1988-10-06 | Stiwa-Fertigungstechnik Sticht Gesellschaft M.B.H. | Process and device for removing coatings with a laser beam |
| EP0297506A3 (en) * | 1987-07-02 | 1991-11-27 | Ibm Deutschland Gmbh | Removal of particles from solid-state surfaces by laser bombardement |
| WO1989001841A1 (en) * | 1987-08-28 | 1989-03-09 | Tsentralnoe Konstruktorskoe Bjuro Unikalnogo Pribo | Method and device for laser processing of an object |
| US5103073A (en) * | 1987-08-28 | 1992-04-07 | Danilov Viktor A | Device for laser treatment of an object |
| DE3932328A1 (en) * | 1989-09-28 | 1991-04-11 | Opel Adam Ag | METHOD FOR MACHINING SURFACES HIGHLY STRESSED BY FRICTION IN INTERNAL COMBUSTION ENGINES, AND DEVICE FOR CARRYING OUT THE METHOD |
| DE4142855A1 (en) * | 1991-12-20 | 1993-07-01 | Electronicon Gmbh I L | Preferentially etching metal coatings on plastic or paper foil - using pulsed laser beam operating in ultraviolet range |
| DE4241575A1 (en) * | 1992-12-10 | 1994-06-16 | Baldwin Gegenheimer Gmbh | Printing roller cleaning - uses laser beam to detach dirt and residue from surface without affecting surface character |
| US5592879A (en) * | 1992-12-10 | 1997-01-14 | Baldwin-Gegenheimer Gmbh | Method and apparatus for the contact-free removal of dirt from the cylinders of printing machines |
| US5463951A (en) * | 1993-01-20 | 1995-11-07 | Baldwin-Gegenheimer Gmbh | Printing machine spray device |
| DE4320408A1 (en) * | 1993-06-21 | 1994-12-22 | Fraunhofer Ges Forschung | Process-control method for the surface machining of workpieces with pulsed laser radiation |
| DE4320408C2 (en) * | 1993-06-21 | 1998-02-19 | Fraunhofer Ges Forschung | Process control and regulation process for the surface processing of workpieces with pulsed laser radiation |
| DE19617388C1 (en) * | 1996-04-30 | 1997-05-28 | Siemens Ag | Laser machining process monitoring system |
| DE10130402A1 (en) * | 2001-06-23 | 2003-01-02 | Bayerische Motoren Werke Ag | Pre-treatment monitoring procedures |
| DE10222117A1 (en) * | 2002-05-17 | 2003-12-18 | W & H Dentalwerk Buermoos Ges | Laser processing device for plasma-induced ablation |
| DE10222117B4 (en) * | 2002-05-17 | 2004-09-16 | W&H Dentalwerk Bürmoos Gesellschaft m.b.H. | Dental medical laser processing device for plasma-induced ablation |
| WO2007031135A1 (en) * | 2005-07-07 | 2007-03-22 | Main Management Inspiration Ag | Apparatus for the continuous surface cleaning of rotationally movable casting rolls of a strip-casting machine |
| CN103792215A (en) * | 2014-01-24 | 2014-05-14 | 国电科学技术研究院 | Method for rapidly measuring content of carbon element in steel |
| CN103792215B (en) * | 2014-01-24 | 2016-08-17 | 国电科学技术研究院 | A kind of method of carbon element content in quick measurement iron and steel |
| CN109821822A (en) * | 2019-03-13 | 2019-05-31 | 何兴 | Netted laser cleaning system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2169496B (en) | 1987-12-23 |
| GB8501028D0 (en) | 1985-02-20 |
| GB2169496A (en) | 1986-07-16 |
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Owner name: STC PLC, LONDON, GB |
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