Automobile Technology & Material

一种双组分锌盐表调剂­的研究

- 谭伍永 苏会 宋振升 吴小松 路洋 刘海峰430030) (武汉材料保护研究所有­限公司,武汉

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.

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