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    循环流化床锅炉受热面激光表面强化技术研究进展

    Research progress of surface modification technology of circulating fluidized bed boiler

    • 摘要: 随着工业化进程的加速,循环流化床(Circulating Fluidized Bed,CFB)锅炉作为关键的能源转换设备,在众多工业应用中发挥着至关重要的作用。然而,CFB锅炉的受热面在长期运行中常遭受磨损和腐蚀,这不仅降低了运行效率,还缩短了其使用寿命。为了应对这一挑战,激光表面强化技术以其显著的优势,逐渐成为提升锅炉受热面性能的有效解决方案。综合评估了激光表面强化技术在提高CFB锅炉受热面耐磨和耐蚀性能方面的有效性,并对其在工业应用中的潜力和面临的挑战进行了深入探讨。首先概述了激光表面强化技术的基础原理和关键方法,包括激光淬火、激光重熔、激光合金化、激光冲击强化和激光熔覆等。这些技术能够在材料表面形成具有高硬度和高耐磨性的涂层,从而显著延长锅炉部件的使用寿命,增强其可靠性。进一步地,分析了这些技术在实际工业应用中的效果,证实了激光表面强化技术不仅能显著提升材料的表面硬度和耐磨性,还能通过产生残余压应力层来增强材料的耐腐蚀性。此外,该技术还具备非接触性、强可控性和强化效果显著等优点。尽管如此,激光表面强化技术在推广过程中仍面临一些挑战,包括对工艺参数的精确控制、成本控制以及技术的复杂性等。针对这些挑战,未来的研究将集中于技术的优化,包括开发高精度自动化控制系统、研究新型合金粉末和添加剂,以及探索更经济高效的激光设备和技术方案。文章还探讨了激光表面强化技术在工业环境中的适应性及其潜在的创新应用前景,为学术界提供了新的交流视角,并对未来的发展趋势进行了展望,指出了研究方向。随着技术的持续进步和成本的降低,预计激光表面强化技术将在工业领域获得更广泛的应用,对提升能源转换效率和促进环境保护具有重要意义。综上所述,激光表面强化技术为CFB锅炉受热面的改进提供了一种有效的策略,有望在未来的工业应用中发挥更加关键的作用,为实现能源的高效利用和环境的可持续发展做出积极贡献。

       

      Abstract: With the acceleration of the industrialization process, Circulating Fluidized Bed (CFB) boilers, as key energy conversion equipment, play an essential role in numerous industrial applications. However, the heat-absorbing surfaces of CFB boilers often suffer from wear and corrosion during long-term operation, which not only reduces operational efficiency but also shortens their service life. To address this challenge, laser surface strengthening technology, with its significant advantages, has gradually become an effective solution to enhance the performance of boiler heat-absorbing surfaces. A comprehensive evaluation of the effectiveness of laser surface strengthening technology in improving the wear and corrosion resistance of heat-absorbing surfaces of CFB boiler was conducted and deeply discusses its potential and challenges in industrial applications. First, the basic principles and key methods of laser surface strengthening technology are outlined, including laser quenching, laser remelting, laser alloying, laser shock peening, and laser cladding. These technologies can form coatings with high hardness and wear resistance on the material surface, thereby significantly extending the service life of boiler components and enhancing their reliability. Furthermore, the effects of these technologies in actual industrial applications was analyzed, confirming that laser surface strengthening technology can not only significantly improve the surface hardness and wear resistance of materials but also enhance the corrosion resistance by generating residual compressive stress layers. In addition, the technology also has the advantages of non-contact, strong controllability, and significant strengthening effects. Despite this, the promotion of laser surface strengthening technology still faces some challenges, including precise control of process parameters, cost control, and the complexity of the technology. In response to these challenges, future research will focus on technology optimization, including the development of high-precision automated control systems, research on new types of alloy powders and additives, and the exploration of more economical and efficient laser equipment and technical solutions. The article also discusses the adaptability of laser surface strengthening technology in the industrial environment and its potential for innovative applications, providing a new perspective for academic exchanges and looking forward to the future development trend, pointing out the direction of research. With the continuous advancement of technology and the reduction of costs, it is expected that laser surface strengthening technology will gain wider application in the industrial field, which is of great significance for improving energy conversion efficiency and promoting environmental protection. In summary, laser surface strengthening technology provides an effective strategy for the improvement of CFB boiler heat-absorbing surfaces, is expected to play a more critical role in future industrial applications, and will make a positive contribution to the efficient use of energy and the sustainable development of the environment.

       

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