本文分析了减压轴氮化前用汽油清洗产生花斑的原因；通过去污机理的研究，比较了几种表面活性剂的渗透、分散能力，并选择了辛烷基苯酚聚氧乙烯醚一10作为清洗剂的必要成分．由于硅酸钠有防止污垢再沉积、软化水、悬浮污垢等优良特性，因此以其为助洗剂研制而成的D-1清洗剂使用效果良好．这一清洗剂的研制成功解决了长期存在的产生花斑的质量问题，节约了宝贵的汽油，取得了较大的经济效益． In this paper, the reasons for the speckle formation of gasoline before the nitriding of the decompression shaft were analyzed. Through the study of the decontamination mechanism, the infiltration and dispersion capacities of several surfactants were compared, and the octylphenol polyoxyethylene ether 10 as an essential component of cleaning agents. Because sodium silicate has the excellent features of preventing soil redeposition, demineralized water, suspended dirt and the like, D-1 cleaning agent developed by using it as a builder has a good effect. The development of this cleaning agent has successfully solved the quality problems of long-term occurrence of speckles, saved precious gasoline and achieved great economic benefits.