Los componentes de los equipos metalúrgicos suelen operar en condiciones extremas, incluyendo altas temperaturas, cargas fluctuantes, choques térmicos cíclicos, corrosión, desgaste y fatiga. Muchas piezas de hierro fundido son altamente susceptibles a la corrosión y al desgaste, lo que requiere reemplazo y mantenimiento frecuentes. En la producción de chapa metálica, componentes como los rodillos de laminación y los rodillos transportadores exigen una calidad superficial excepcionalmente alta. Para estas piezas de uso generalizado y con alta frecuencia de mantenimiento, prolongar su vida útil y reducir los costos de mantenimiento son fundamentales para el desarrollo de la industria.

Actualmente, las capas de protección superficial para componentes de equipos de acero y metalúrgicos se producen principalmente mediante galvanoplastia, pulverización térmica y soldadura por arco. La adopción de tecnología de revestimiento láser Ofrece una durabilidad del recubrimiento significativamente mejorada y una vida útil prolongada, a la vez que reduce los ciclos de reparación. El revestimiento láser también proporciona mayor flexibilidad para controlar el espesor y el rendimiento del recubrimiento, lo que lo convierte en una solución superior para el fortalecimiento de superficies y la restauración resistente al desgaste en aplicaciones metalúrgicas.

Scene 1: Laser Cladding for Rolling Mill Rolls

Rolling mill rolls are the most critical consumable components in the steel industry. Their quality directly influences mill efficiency and final product surface quality, making advanced surface treatment technology essential. Typical roll failure modes include thermal cracking, spalling, fatigue wear, and abrasive wear.

Laser cladding technology enables the selection of optimized alloy powders and process parameters based on roll material, working conditions, and technical requirements. This process achieves strong metallurgical bonding between the coating and substrate, forming a dense cladding layer with surface hardness typically reaching 50–60 HRC, significantly enhancing wear and impact resistance.

Compared with traditional repair technologies, revestimiento láser de alta velocidad offers lower heat input, minimizing the heat-affected zone and avoiding excessive hardening of the base material that can hinder machining. The coating demonstrates uniform hardness distribution, preventing localized hard spots that could scratch steel plates. As a result, laser-cladded rolls achieve several-fold improvement in durability, wear resistance, and impact performance, greatly extending service life and reducing maintenance costs in steel production.

Scene 2: Laser Cladding for Guide Wheels

Guide wheels are critical consumable components in hot-rolled bar production lines and play an essential role in maintaining mill uptime and production efficiency. In service, many guide wheels suffer from insufficient heat resistance, steel adhesion, poor wear resistance, and inadequate thermal-fatigue performance. These issues shorten service life and negatively affect product quality.

Laser cladding technology provides a highly effective solution due to its low dilution rate, small heat-affected zone, and easy automation. By selecting optimized cladding alloys and process parameters, laser cladding significantly enhances the guide wheel’s wear resistance, corrosion resistance, fatigue strength, and crack resistance. Typical cladding thickness ranges from 1–3 mm, with surface hardness often exceeding 60 HRC.

After laser cladding, guide wheels can be reused with substantially extended service life, improving equipment availability and significantly reducing maintenance and operating costs in steel rolling applications.