喷砂工艺参数对不锈钢表面环氧涂层结合力的影响  

Effects of sandblasting conditions for stainless steel on adhesion of epoxy coating painted thereon

作　　者：王瑞 侯荣国[1] 张玉龙 张苗苗 肖洪浩 陈鑫 WANG Rui;HOU Rongguo;ZHANG Yulong;ZHANG Miaomiao;XIAO Honghao;CHEN Xin(School of Mechanical Engineering,Shandong University of Technology,Zibo 255049,China;Shandong Jinggong Pumps Co.,Ltd.,Zibo 255200,China)

机构地区：[1]山东理工大学机械工程学院,山东淄博255049 [2]山东精工泵业有限公司,山东淄博255200

出　　处：《电镀与涂饰》2022年第19期1410-1414,共5页Electroplating & Finishing

基　　金：山东省自然科学基金(ZR2020ME154)。

摘　　要：针对环氧涂层与不锈钢表面结合力差的问题,对304不锈钢进行喷砂粗化处理。研究了喷砂角度、喷砂时间、喷砂距离和磨料目数对基体表面形貌、粗糙度以及涂层结合力的影响,并以提高涂层结合力为目的对喷砂工艺进行正交优化。结果表明,基体表面粗糙度(Ra)为5~6μm时,涂层的结合力较高。较佳的喷砂工艺条件为:喷砂角度75°,喷砂距离10 cm,磨料目数24,喷砂时间60 s。此工艺条件下,环氧涂层的平均结合力为20.2 MPa。Aiming at the problem of poor adhesion between epoxy coating and stainless steel substrate, type 304 stainless steel was roughened by sandblasting. The effects of blasting angle, blasting time, standoff distance, and mesh number of abrasive on the surface morphology and roughness of substrate, as well as the adhesion of coating prepared thereon were studied. The process conditions were optimized by orthogonal test to improve the adhesion of coating. The results showed that the adhesion of coating prepared on the substrate with a roughness(Ra) of 5-6 μm was high. The sandblasting conditions were optimized as follows: blasting angle 75°, standoff distance 10 cm, mesh number of abrasive 24, and blasting time 60 s.The average adhesion strength of epoxy coating obtained on the substrate sandblasted thereunder was 20.2 MPa.

关 键 词：不锈钢 喷砂 表面粗糙度 环氧涂层 结合力 

分 类 号：TG580.692.4[金属学及工艺—金属切削加工及机床]