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某型柴油机铸铁缸体、强力螺栓、高温螺栓和拉杆等零件表面须采用高温磷化处理,以获得耐蚀性、耐磨性、耐热性、结合力及硬度均较高的磷化膜,从而提高柴油机的使用性能、期限和品质。但高温磷化存在高能耗造成的较高生产成本问题。本文对高温磷化工艺进行了优化,以高效常温脱脂剂取代传统高温化学除油工艺,取消了表调工序和5%铬酸溶液填充工序,采用热电偶自动控制装置、溢流水清洗技术和逆流漂洗技术,使单位面积磷化成本降低了30%～40%。
A certain type of diesel engine cast iron cylinder block, bolts, bolts and high temperature bolts and other parts of the surface to be high-temperature phosphating treatment to obtain the corrosion resistance, wear resistance, heat resistance, adhesion and hardness are high phosphating film, Thereby improving the performance of diesel engines, duration and quality. However, there is a problem of high production costs caused by high energy consumption due to high-temperature phosphating. In this paper, we optimized the high temperature phosphating process, replaced the traditional high temperature chemical degreasing process with the high temperature degreasing agent at high temperature, canceled the process of surface conditioning and 5% chromic acid solution filling, adopted the thermocouple automatic control device, overflowing water cleaning technology and countercurrent Rinse technology, so that the unit area of phosphate costs reduced by 30% to 40%.