喷砂对45#钢表面耐蚀性的影响  

Effect of sandblasting on corrosion resistance of 45# steel surface

作　　者：赵金龙 张华云[1] Zhao Jinlong;Zhang Huayun(China Airborne Missile Academy,Luoyang 471003,China)

机构地区：[1]中国空空导弹研究院,河南洛阳471003

出　　处：《电镀与精饰》2023年第3期95-100,共6页Plating & Finishing

摘　　要：选取45#钢材料进行了喷砂试验,试样分别采用40目、150目、220目、W40砂粒进行喷砂处理,喷砂后进行镀锌、镀镉处理,最后进行中性盐雾试验。研究了不同砂粒目数对基体表面的损伤及耐蚀性的影响。结果表明,喷砂在增加试样表面积的同时,会对基体表面造成不同程度的损伤,砂粒粒径越大对试样表面的损伤越严重,表面粗糙度值越大,耐蚀性越差。采用不同目数砂粒喷砂的试样经镀锌处理,48 h盐雾试验后试样表面均出现不同程度的腐蚀现象;而经镀镉处理后,360 h盐雾试验后试样未出现腐蚀现象。45 # steel material was selected for sandblasting test. The samples were sandblasted with 40mesh, 150 mesh, 220 mesh and W40 grit respectively, zinc and cadmium platings were carried out after sandblasting, and neutral salt spray corrosion test was carried out finally. The influence of different grit sizes on the damage and corrosion resistance of the substrate surface after sandblasting was studied.The results show that while sandblasting increasing the surface area of the sample, it will cause different degrees of damage to the substrate surface, the larger the sand particles are, the more serious damage to the sample surface and the worse corrosion resistance of the surface were produced. After sandblasting with four different mesh sizes and 48 h of salt spray test, the sample surface of zinc plating shows different degrees of corrosion, while cadmium plating with sandblasting shows no corrosion after 360 h of salt spray test.

关 键 词：喷砂 目数 镀层 耐蚀性 

分 类 号：TQ153[化学工程—电化学工业]