钢板热浸镀铝锌合金工艺的确定  

Determine on Hot-dip Al-Zn Alloy Process of Steel Sheet

作　　者：肖莹莹[1] 肖罡[1] 上官琪[1] 曾建民[1] 

机构地区：[1]广西大学有色金属及材料加工新技术教育部重点实验室,广西南宁530004

出　　处：《机械工程材料》2008年第11期28-30,38,共4页Materials For Mechanical Engineering

基　　金：广西科技计划重点研究项目(桂科能0443001-1)

摘　　要：研究了钢板热浸镀55A1-Zn-1．5Si合金层的工艺，分析了不同的助镀剂配方及浸镀参数对镀层质量的影响，确定出了较理想的热浸镀工艺。结果表明：助镀剂基本不影响镀层的厚度，但助镀剂的选择对铝锌合金镀层耐蚀性能有直接影响；适用于钢板热浸镀55A1-Zn-1．5Si合金层的水溶性助镀剂配方为27％ZnCl2＋109／6NH4Cl；较理想的浸镀温度为640-660℃，浸镀时间为6min，提升速度为5m·min^-1。Through experiments of hot-dipping 55Al-Zn-1.5Si alloy coating on the steel sheet, the effect of plating auxiliary and hot-dip processing parameters on coating thickness and quality were studied. The results show that the plating auxiliary had less effect on the alloy layer thickness, but influenced the ant/corrosion of Al-Zn alloy coating directly. The optimized composition of water-soluble auxiliary for 55Al-Zn-1. 5Si alloy coating was 27% ZnCl2 ＋ 10 %NH4 C1. When the hot dip temperature was 640--660 ℃, the hdding time was 6 minute and the raising speed was 5 m · min^-1 , coatings with high quality could be gained.

关 键 词：热浸镀 助镀剂 铝锌合金 

分 类 号：TG146[一般工业技术—材料科学与工程]