论文部分内容阅读
在稀土渣电渣重熔0Cr_(25)Al_5合金取得良好效果的基础上,进行了稀土渣与五个常用的电渣炉渣系重熔高溫铁铬铝0Cr_(21)Al_6Nb的对比实验,以系统考查稀土渣的冶金特性。实验是在20公斤及10公斤电渣炉上进行。实验结果表明稀土渣的脱硫、脱氧、脱氮及抗氢能力均强于目前所用的电渣炉渣系,并再次得出合金中的铝可将渣中稀土还原0.010-0.025%,重熔后所得合金清洁度高,稀土夹杂物少且分布弥散,稀土固熔率达80%。因此合金的塑性得到显著改善,提高并稳定合金的1350℃的寿命。最后介绍了使用稀土渣重熔的特定工艺条件。
Based on the good effect of 0Cr_ (25) Al_5 alloy obtained by electroslag remelting of rare earth slag, the comparative experiment of 0Cr_ (21) Al_6Nb with 0Cr_ (25) Al_6Nb, Metallurgical properties of rare earth slag were examined. The experiment was carried out on a 20 kg and 10 kg electroslag furnace. The experimental results show that the desulfurization, deoxygenation, denitrogenation and hydrogen-resistant ability of rare earth slag are stronger than the current electroslag slag system, and once again obtained that the aluminum in the alloy can reduce 0.010-0.025% rare earth in the slag. After remelting High alloy cleanliness, rare earth inclusions and dispersed distribution of rare earth refractory melting rate of 80%. Therefore, the ductility of the alloy is significantly improved, and the life of the alloy at 1350 ° C is increased and stabilized. Finally, the specific process conditions of remelting rare earth slag are introduced.