
Research progress in failure behavior of protective coatings on surface of continuous casting mould
Dongbao HUANG, Zhenqi DONG, Shenshen LI, Zhenlin XU, Hui ZHANG, Xiangjun CHEN, Caiyun XU, Yizhu HE
Journal of Materials Engineering ›› 2023, Vol. 51 ›› Issue (11) : 52-60.
Abbreviation (ISO4): Journal of Materials Engineering
Editor in chief: Xiangbao CHEN
Research progress in failure behavior of protective coatings on surface of continuous casting mould
The continuous casting mould is the most crucial core component of the continuous casting production line,which undertakes the important tasks of cooling,heat conduction,abrasion resistance and high-precision forming of the billet surface during the high-speed vibration drawing process of the molten steel. Based on the engineering application practice of mould surface protective coatings in domestic steel plants, the advantages,disadvantages and developing trends of electroplated alloy coatings and thermal spray coatings on the surface of mould copper plate were summarized,as well as the main failure forms and formation mechanisms at different locations of mould surface after service under actual working conditions,providing the basis for optimizing the design of coating compositions and corresponding performance in different areas. Moreover,the service results and application advantages of the thermal spraying/vacuum diffusion composite technology developed by the project team in major domestic steel plants were introduced in detail. Finally,it was pointed out that thermal spraying technology will gradually replace electroplating technology and become the core technology of mold surface protection,and high entropy and medium entropy alloy coating has great application potential.
continuous casting mould / coating / industrial application / failure behavior
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