高效无公害钢铁表面亮化液研究

苏义祥, 赵晓莉, 郭海锋, 徐壮, 雷雨

Efficient and Pollution-free Brightening Solution for Steel Surface

SU Yixiang, ZHAO Xiaoli, GUO Haifeng, XU Zhuang, LEI Yu

表3 亮化液和磷化膜主要性能测试结果

Table 3 Verious performances of the brightening solution and phosphating film

Test item Test result Normative reference Standard code Exterior of lighting solution Colorless clear liquid， no precipitation or floc GB /T 12612- 2005 --- pH of lighting solution 1 GB /T 12612- 2005 --- Density / gcm-3 1.22 GB /T 12612- 2005 --- Total acidity point of lighting solution 1068 GB /T 12612- 2005 --- Free acidity of lighting solution 406 GB /T 12612- 2005 --- Exteriorof phosphate coating Gray GB /T 12612- 2005 --- Corrosion resistance against 3%NaCl solution / h 3 GB /T 12612- 2005 --- Corrosion resistance against CuSO4 intravenous drip / s 204 GB /T 12612- 2005 --- Antirust period of phosphating film / d >90 GB /T 12612- 2005 ≥7 Bonding strength between phosphating film and substrate ISO0 level (ASTM5B level) ISO-2409/ASTM D3359-B ≥1 level （4B level）