METHOD OF FAST LASER SCRIBING

A fast-speed laser scoring method is provided, in which a set of related laser scoring device is used to simultaneously score lines on the upper surface and the lower surface of an oriented silicon steel strip, which is being fed and traveling forwards on a production line, with high-focalized conti...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HUANG, WANGYA, ZHANG, XINQIANG, GUO, WANQING, XIANG, BANGLIN, LI, GUOBAO, ZHU, JIANRU, MAO, XING
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MACHINE TOOLS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A fast-speed laser scoring method is provided, in which a set of related laser scoring device is used to simultaneously score lines on the upper surface and the lower surface of an oriented silicon steel strip, which is being fed and traveling forwards on a production line, with high-focalized continuous wave laser beam; the lines scored on the upper surface and the lines scored on the lower surface have the same space between every two adjacent scored lines but are staggered each other in order to reduce iron loss evenly. The space between every two adjacent scored lines on the same surface is 6~12mm, laser power is 1000~3000W and scanning speed is 100~400m/min. The machining rate of the scoring method and device attains 1.5~2 times the one of conventional scoring methods which can not simultaneously score the upper and lower surfaces of a steel strip at a time. The lines scored on a steel strip by the method can reduce iron loss of the strip by 10~16%.