Abstract: Qualified surface treatment-alkali (lipping, acid pickling and activating treatment is foundation to form complete and compact phosphating film on surface of GCrl5 steel coil. With controlling the ratio of phosphating liquid total acidity and free acidity- 5. 5 ~ 7. 5 , phosphating temperature 70 ~80 °C . and using sodium stearic acid for soaping at 90 °C for 20 min, it is available to get the quality phosphating film and soaping film, and it is propitious to cold-work of bearing steel coil.

Key words: GCrl5 Bearing Steel, Acid Pickling, Phosphating, Soaping, Cold Drawing, Surface Quality

摘要： 规范的表面处理-碱浸、酸洗和活化处理是GCr15钢盘条形成完整、致密磷化膜的基础。通过控制磷化液总酸度和游离酸度比5.5～7.5,磷化温度70～80℃,采用硬脂酸钠皂化处理,温度90℃,时间20min,可得到优质磷化膜和皂化膜,利于盘条的冷加工。

关键词: GCr15轴承钢, 酸洗, 磷化, 皂化, 冷拉, 表面质量