Automobile Technology & Material
一种双组分锌盐表调剂的研究
PA-Z
摘要:开发一种双组分锌盐液体表调剂。通过配套磷化后的膜重和微观形貌考察了 的表调能力,
以及水质、PA-Z(A)和PA-Z(B)用量对表调能力的影响,表调槽液寿命。结果表明,PA-Z表调能力强;水质(电导率8~320 μs/cm)对表调能力影响小;pa-z(a)用量1.25~2.5 G/L,PA-Z(B)剂用量1.2~1.5 g/l最佳;槽液180天,表调能力无衰减。PA-Z 3存放 表调能力与常用的固体钛盐表调相当,寿命是固体钛盐表调的 倍。
关键词:锌盐液体表调 表调能力 寿命
中图分类号:U466 文献标识码:B 10.19710/J.cnki.1003-8817.20210004 DOI:
Study on A Bi-component Zinc-salt Conditioner
Tan Wuyong, Su Hui, Song Zhensheng, Wu Xiaosong, Lu Yang, Liu Haifeng
(Wuhan Institute of Material Protection Co., Ltd, Wuhan 430030, China) Abstract:a bi-component zinc-salt liquid conditioner is developed. The surface conditioning ability of PA-Z, the influence of water quality, PA-Z (A) and PA-Z (B) dosage on surface conditioning ability, and the service life of the conditioner bath were all studied by the weight and the micro morphology of the phosphating films. The results showed that the surface conditioning ability of PA-Z is strong, water quality with the conductivity of 8-320 μs/cm has little effect on the ability of the conditioner. Surface conditioning ability is the best as the dosage of component PA-Z (A)is 1.25~2.5 g/l and that of component PA- Z(B) is 1.2~1.5 g/l. The surface conditioning ability of PA- Z didn't attenuate after the conditioner bath was kept for 180 days. The conditioning ability of PA-Z is equivalent to that of solid titanium conditioner, while its service life is triple of solid titanium conditioner. Key words: Zinc-salt liquid conditioner, Surface conditioning ability, Service life 1 前言
表面调整是一种在磷化前对金属表面进行活化处理的有效方法。表调剂在基材表面形成均匀吸附层,使需要磷化的金属表面活化,加速磷化,并降低磷化膜厚,使磷化膜结晶细致均匀[1-2]。固体钛系表面调整剂目前应用最广泛,给前处理车间带来粉尘污染,而且胶体钛离子易团聚絮凝导致表调剂失效,表调剂的稳定性差且使用寿命短[3- 4]。为此,研究开发了一种双组分锌盐表调剂,该锌盐表调剂呈液态且稳定性良好,在磷化工序中使用该表调可得到表面无颗粒且均匀细致的磷化膜。2 试验
2.1实验板材及磷化工艺流程
2.1.1
试验材料试验板材为武汉神龙汽车有限公司提供的
冷轧钢板(CR板)和镀锌钢板(GA板),板材尺寸
50 mm×100 mm×0.6 mm。
2.1.2
磷化工艺流程
脱脂(45℃,2 min)→水洗→表调(室温, 30s )→
锌锰镍三元系磷化,FA(游离酸度)=1.0,TA(总酸
度)=20,促进剂(1ML/L,45℃ ,2 min)→水洗→吹
作者简介:谭伍永(1981—),女,工程师,学士学位,研究方向为涂装前处理材料的研发与应用。
参考文献引用格式:
谭伍永,苏会,宋振升,等. 一种双组分锌盐表调剂的研究[J].汽车工艺与材料,2022(1):23-26.
TAN W Y, SU H, SONG Z S, et al. Study on A Bi-component Zinc-salt Conditioner [J]. Automobile Technology & Material, 2022(1): 23-26.