摘要
Abstract
The zinc pot sink roll is one of the important parts of hot dip galvanizinge quipments.The bush of zinc pot sink rolls needs to be imported from abroad,and it is not only expensive but also badly worn.,it needs to be replaced once per week,and that would lead to the high cost of rolling.Therefore,the wearresistance of the zinc pot sink roller bearing is a question with more and more attention.This design is in order to prepare the surface of 316L stainless steel wear-resistant ceramic coating to solve the zinc pot sink roll shaft and insert wear too serious problem to extend the life of the equipment and The main methods of improving the wear resistance for material are surface strain hardening,surfacealloying,surface coating strengthened and so on.In this design,we use the braze coating principle,and make the Al2O3 and WC as ceramic reinforcement materials,Ni82CrSiB as the brazing.The method of using the vacuum braze coating to produce more wear-resistant ceramic coating,so as to improve wear resistance of the stainless steel surface requirements.The results showed that:The wetting effect of Al2O3 and brazing filler is not satisfactory,and we could not find a lumina phase in the coating, that is to say,Al2O3 as the ceramic reinforcement materials cannot achieve the desired goal.However,WC particles in the coating are distributed more evenly.The coating surface is smooth,with a metallic luster,and it is a good metallurgical bond with the stainless steel surface.Its hardness is more than 6 times the stainless steel substrate,and it can be required to improve the wear resistance.关键词
陶瓷涂层/陶瓷增强相/真空钎涂/润湿效果/耐磨性/力学性能Key words
Ceramic coating/Ceramic reinforced phase/Vacuum brazing/Wetting effect/Wear resistance/Mechanical property分类
化学化工
