Multi-stage laser stripping of a rod-shaped conductor
AssigneeTRUMPF Laser- und Systemtechnik GmbH
InventorsOliver Bocksrocker, Christoph Neugebauer, Tim Hesse
Life of this patent
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Abstract
A method for stripping a rod-shaped conductor using laser radiation is provided. The rod-shaped conductor includes an electrically conductive core and a coating that is at least partially transparent to the laser radiation. The method includes traversing the conductor for a first time with at least one laser beam to at least partially reduce transparency of the coating, and traversing the conductor for a second time with the at least one laser beam to at least partially reduce adhesion of the coating.
Claims19
A method for stripping a rod-shaped conductor using laser radiation, wherein the rod-shaped conductor comprises an electrically conductive core and a coating that is at least partially transparent to the laser radiation, the method comprising:
- traversing the conductor for a first time with at least one laser beam to at least partially reduce transparency of the coating;
- and
- traversing the conductor for a second time with the at least one laser beam to at least partially reduce adhesion of the coating,
- wherein the laser radiation has the following parameters in order to obtain at least partial spalling of the coating:
- a frequency of at least 5 kHz and at most 15 kHz;
- a pulse overlap of less than 20%;
- a line overlap of less than 20%;
- and
- a pulse energy of between 30 mJ and 50 mJ.
A method for stripping a rod-shaped conductor using laser radiation, wherein the rod-shaped conductor comprises an electrically conductive core and a coating that is at least partially transparent to the laser radiation, the method comprising:
- traversing the conductor for a first time with at least one laser beam to at least partially reduce transparency of the coating;
- and
- traversing the conductor for a second time with the at least one laser beam to at least partially reduce adhesion of the coating,
- wherein the laser radiation has the following parameters in order to obtain at least partial burning off of the coating:
- a frequency of more than 20 kHz;
- a pulse overlap of more than 40%;
- a line overlap of more than 40%;
- and
- a pulse energy of more than 40 mJ.
Dependencies are inferred from the claim text.