Wróbel Tomasz
Department of Foundry Engineering, Silesian University of Technology, 7 Towarowa Street, 44-100 Gliwice, Poland.
Materials (Basel). 2024 Jul 17;17(14):3539. doi: 10.3390/ma17143539.
In this paper, issues related to the technology of compound castings composed of two parts, i.e., the working layer and the supporting part, made of X46Cr13 high-chromium steel and EN-GJL-HB 255 grey cast iron, respectively, in a liquid-solid system by pre-installing a monolithic insert in the mould cavity are presented. As a part of the research, the mechanism of formation of transitional zones in the bonding area of the above-mentioned two alloys was identified and described. It was shown that the phenomenon that determines the formation of a permanent bond between the joined materials is the transport of C and heat from the "high-carbon and hot" material of the supporting part poured into the mould in the form of liquid cast iron to the "low-carbon and cold" material of the working layer placed in the form of a steel monolithic insert inside the mould cavity. In the paper, the suitability of the compound castings technology developed for use in the coke industry is also presented. Full-size high-chromium steel-grey cast iron compound casting plates designed for the coke quenching car lining were positively verified in real coke plant operating conditions.
本文介绍了通过在型腔中预安装整体式镶块，在液固系统中由分别由X46Cr13高铬钢和EN-GJL-HB 255灰铸铁制成的工作层和支撑部分这两个部件组成的复合铸件技术相关问题。作为研究的一部分，确定并描述了上述两种合金结合区域过渡区的形成机制。结果表明，决定连接材料之间形成永久结合的现象是碳和热量从以液态铸铁形式倒入模具的支撑部分的“高碳且热”材料传输到以钢质整体式镶块形式放置在型腔内的工作层的“低碳且冷”材料。本文还介绍了所开发的复合铸件技术在焦炭行业应用的适用性。为熄焦车衬里设计的全尺寸高铬钢 - 灰铸铁复合铸造板在实际焦化厂运行条件下得到了肯定验证。
