一、可控涂复和净化处理涂装前的预处理,包括脱脂、清洗、磷化等几道工序。在磷化处理中该公司采用了比较先进的可控涂复及净化处理装置。1 可控涂复在对钢铁工件的磷化处理中,一般采用下述方法:(1)喷淋法;(2)浸渍法;(3)喷淋—浸渍—喷淋法;(4)喷淋—逆流法(除喷淋外,再利用喷淋的逆流水,向汽车车身或箱体物件内部浇灌的方法)。为提高工件的防蚀能力,对磷化膜厚度和晶体结构的要求非常严格。实践证明,磷化工 First, the controllable coating and purification Pretreatment before painting, including degreasing, cleaning, phosphating and other processes. Phosphating in the company adopted a more advanced controllable coating and purification devices. 1 controllable coating Phosphating treatment of steel parts, the following methods are generally used: (1) spray method; (2) immersion method; (3) spray - impregnation - spray method; Leaching - counter-current method (in addition to spraying, the use of spray water and then back to the body of the car or tank interior watering method). In order to improve the anti-corrosion ability of the workpiece, the requirements of the phosphate film thickness and the crystal structure are very strict. Practice has proved that phosphorus chemical industry