P110油管钢稀土渗铬工艺优化
Process Optimization of RE Modified Chromizing for P110 Oil Tube Steel
林乃明, 谢发勤, 钟 涛, 吴向清
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作者单位：(西北工业大学 航空学院, 陕西 西安 710072)
中文关键字：油管钢； 稀土； 渗铬； 工艺优化
英文关键字：oil tube steel; rare earth(RE); chromizing; process optimization
中文摘要：利用正交试验方法对P110油管钢(P110钢)稀土渗铬工艺参数进行优化。结果表明：采用试验中的每组工艺参数，均可在P110钢表面形成连续、均匀、致密的渗铬层；以渗层的成分厚度(wCr≥12%)作为评价指标，得到的优化工艺参数为：温度1000 ℃，保温时间8 h，催化剂含量3wt%，稀土添加量7wt %。
英文摘要：An orthogonal designing method was used to optimize processing parameters of rare earth (RE) modified chromizing on P110 oil casing tube steel (P110 steel). The results show that the chromizing coating is available based on each processing parameter, the coating is uniform, continuous and compact. Taking the compositional thickness (wCr≥12%) as an evaluating indicator, the optimal process parameters are obtained as follows: chromizing temperature 1000 ℃, holding time 8 h, and activator composition 3wt%, RE addition ratio 7wt%.