一般黑色金属的氧化不外酸性和碱性的两种,但应用较多的还是碱性发蓝,由于采用工艺不同(有一次发蓝和两次发蓝),所以时间也不等,一般发蓝时间在4O—-90分钟,其抗触性能要求3%的硫酸铜30秒内不变铜色为合格.我们吸收了兄弟厂的经验试验——快速碱性发蓝,可以提高工效16倍. The general oxidation of ferrous metals, but no more than two acidic and alkaline, but more commonly used or blue, due to the use of different processes (once blue and blue), so the time is not the same, the general hair Blue time in 4O - 90 minutes, its anti-contact performance requirements of 3% copper sulfate unchanged within 30 seconds copper qualified.We have absorbed the experience of the brothers plant test - rapid alkaline blue, can improve work efficiency 16 times .