Laser marking system, marking method and batch detection method for metallurgical plates

Abstract

The invention discloses a laser marking system, marking method and batch detection method for metallurgical plates. The laser marking system includes a laser module, an optical module and a water cooling device. The laser module includes a laser generator and a control unit. The generator is a non-pulse laser; the optical module includes a vibrating mirror and a field mirror; the water cooling device is configured to cool down the laser generator and / or the optical module; under the control of the control unit, the laser The mirror emits a laser with a preset output power. The oscillating mirror is used to reflect the laser light to reach the field mirror. The field mirror is used to focus the laser light passing through it, and then the laser light reaching the marking area makes the marking appear on the surface of the metallurgical plate placed in the marking area. Content, the engraved content is convex and / or concave relative to the surface of the metallurgical plate. The invention can use the non-pulse laser to accurately and clearly engrave characters or patterns on the metallurgical plate, with high efficiency and good effect.

Description

technical field [0001] The invention relates to the application field of laser technology, in particular to a laser marking system, a marking method and a batch detection method for metallurgical plates. Background technique [0002] With the improvement of domestic laser research and development technology and production and manufacturing capabilities, the quality level of lasers has improved, and the application fields of lasers have also expanded accordingly. At the same time, the application range in various fields is also expanding. Now, with the integration of industrialization and industrialization in metallurgical enterprises, metallurgical and smelting enterprises gradually have the need for product traceability and material code identification. It is urgent to solve the problems of fast marking and engraving material codes on hot steel billets or steel materials in metallurgical smelting, so as to realize product production. Process platform automation management. ...

AI Technical Summary

Problems solved by technology

[0005] 1. The emitted laser has concentrated and continuous high energy, it is difficult to control the laser speed and energy, resulting in uncontrollable marking. For example, the thermal effect accompanying the processing process is easy to cause adverse damage to the metallurgical plate to be processed;

[0006] 2. Because the emitted continuous laser energy is too large, when the laser beam hits the metal surface, pits will be formed on the metal surface, causing part of the metal to melt, or even metal splashes, which will lead to uneven spots on the metallurgical plate to be processed. The pattern cannot guarantee the engraving of the basic lines, and it will also cause the cleanliness of the metallurgical plate to decline, affect the quality of the metallurgical plate, make the metallurgical plate need to be polished in the follow-up work, and the metal splash will directly affect the damage of the field mirror and affect the quality of the metallurgical plate. marking effect

In order to achieve color marking, the existing technology forms oxide films of different thicknesses on the metal surface to obtain color effects or color patterns, but this requires that the metal to be processed should have different colors before and after oxidation, otherwise Color engraving will not be possible, which largely limits the popularity of color engraving

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