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

Abstract

The invention discloses a laser marking system, a marking method and a batch detection method for a metallurgical plate. The laser marking system comprises a laser module, an optical module and a water cooling device, wherein the laser module comprises a laser generator and a control unit, and the laser generator is a non-pulse laser; the optical module comprises a galvanometer and a field lens; the water cooling device is configured to cool the laser generator and / or the optical module; and under the control of the control unit, the laser generator emits laser with preset output power to the galvanometer at a preset frequency, the galvanometer is used for reflecting the laser to enable the laser to reach the field lens, the field lens is used for focusing the laser penetrating through the field lens, then the laser reaching a marking area enables the surface of the metallurgical plate arranged in the marking area to display marking content, and the marking content is in a convex shape and / or a concave shape relative to the surface of the metallurgical plate. According to the laser marking system, the marking method and the batch detection method, characters or patterns can be accurately and clearly marked on the metallurgical plate by utilizing the non-pulse laser, the efficiency is high, and the effect is good.

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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