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首页> 外文期刊>Journal of Materials Engineering and Performance >The Influence of Calcite, Fluorite, and Rutile on the Fusion-Related Behavior of Metal Cored Coated Electrodes for Hardfacing
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The Influence of Calcite, Fluorite, and Rutile on the Fusion-Related Behavior of Metal Cored Coated Electrodes for Hardfacing

机译：方解石，萤石和金红石对表面硬化金属药芯涂层电极熔合相关行为的影响

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摘要

Coated electrodes for SMAW have exhibited their advantages for longer than one century. Means of boosting their performance, particularly for hardfacing, would be a raise in the alloying transfer efficiency and a lowering of the dilution with the substrate, without losing the production capacity. In this study, an evaluation about the operational behavior of a new conception of electrodes for hardfacing is described, i.e., metal cored coated electrodes. Experimental electrodes were produced using metal cored technique to obtain the rods. FeCrMn was used as alloying material at two grain sizes. Using the Mc Lean Anderson experimental design approach, the content ratio of CaCO_3:CaF_2:TiO_2 in the coating was varied. The effect of the coating composition and granulometry of the filling alloying material on the formation a cannon-like end was assessed. Fusion and metal transfer behaviors were evaluated through measurements of fusion and deposition rates, deposition efficiency, and duration and frequencies of short-circuiting. Based on a balance of performances, the most appropriate composition for the coating was determined. It was also observed that a coarser FeCrMn presented better performance.
机译：SMAW的涂层电极已展现出超过一个世纪的优势。增强其性能（特别是用于表面硬化）的方法是在不损失生产能力的情况下提高合金转移效率并降低与基材的稀释度。在这项研究中，描述了一种关于用于硬化表面的新概念电极的操作行为的评估，即金属芯涂覆电极。使用金属芯技术生产实验电极以获得棒。 FeCrMn用作两种晶粒大小的合金材料。使用Mc Lean Anderson实验设计方法，改变了涂层中CaCO_3：CaF_2：TiO_2的含量比。评估了涂料组成和填充合金材料的粒度对大炮状末端形成的影响。通过测量熔合和沉积速率，沉积效率以及短路持续时间和频率来评估熔合和金属转移行为。基于性能的平衡，确定最适合涂料的组成。还观察到，较粗的FeCrMn表现出更好的性能。

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