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广东省韶关市特种汽车制配厂自1979年转产液压汽车起重机以来,对液压管道的清洗采用酸洗除锈—磷化新工艺,通过一年多的实践证明,具有较多的优点,其最大特点是:将除锈和磷化这两种不同的处理过程合并在一道工序进行,即工件经过去油、水洗之后,直接放入76型化锈磷化液中,在常温下进行除锈和磷化。采用这一工艺后就省去了原来的酸洗除锈后还要水洗、碱液中和、冷水洗、热水洗等四个工序,节约了用水、用电,减少基建投资,降低成本,节省人力,大大提高了工效,尤其是工件经这样处理后一般可放置数月不生锈。此外,由于用磷酸及磷酸盐代替硫酸(或盐酸)
Shaoguan City, Guangdong Province Special Purpose Vehicle Manufacturing Plant Since the switch to hydraulic truck crane in 1979, the hydraulic pipe cleaning using pickling rust - phosphating new technology, more than a year of practice proved to have more advantages, the largest Characteristics are: rust and phosphating these two different processes are combined in one process, that is, after the workpiece to the oil, washed, directly into the 76-type rust rust phosphating solution at room temperature for rust and Phosphating. This process eliminates the need for the original pickling rust after washing, lye neutralization, cold water washing, hot water washing and other four processes, saving water, electricity, reduce capital investment, reduce costs, save Manpower, greatly improving the work efficiency, especially after the workpiece can be placed so generally do not rust for several months. In addition, the use of phosphoric acid and phosphate instead of sulfuric acid (or hydrochloric acid)