达克罗和渗锌在桥梁支座锚固螺栓上的应用  

Application of Dacromet and Sherardizing in Anchor Bolt of Bridge Bearings

作　　者：包胜军[1] 周万红[1] 唐革新[1] 谢昕欣[1] 郭红锋[1] 

机构地区：[1]株洲时代新材料科技股份有限公司,湖南株洲412007

出　　处：《涂料工业》2013年第2期65-67,共3页Paint & Coatings Industry

摘　　要：介绍了一种新的螺栓防腐处理方法,渗锌-达克罗复合涂层。通过研究达克罗和渗锌的防腐原理和涂层结构,比较达克罗和渗锌螺栓的中性盐雾试验和室外自然暴露试验,发现达克罗层耐中性盐雾性能好,渗锌层硬度高,室外自然暴露实验结果优于达克罗层,将达克罗和渗锌相结合的复合涂层的处理方式能大大提高桥梁支座锚固螺栓的使用寿命。A new anti - corrosion method for bolt has been developed, i. e composite coatings of sherar- dizing and dacromet. Through studying the anti - corrosion mechanism, coating structure of dacromet and sherardizing and comparing the salt - frog test and outdoor exposure test of dacromet and sherardizing coat- ing, it was found that the salt -fog resistance of dacromet layer was good, the hardness of sherardzing layer was high, the performance of outdoor exposure test of composite coating was prior to dacromrt. The applica- tion of composite coatings of sherardizing and dacromet on anchor bolts of bridge bearings could significantly improve their service life.

关 键 词：达克罗 渗锌 盐雾试验 硬度 复合涂层 

分 类 号：TQ635.2[化学工程—精细化工]