钢水余热衬瓷层磨损机理  

Abrasion mechanism of lining-ceramic layer manufactured by redundant heat of molten steel

作　　者：韩亚苓[1] 丁健[1] 梁正奇 

机构地区：[1]沈阳工业大学材料科学与工程学院,沈阳110870 [2]大连华锐重工集团股份有限公司重型热处理厂,辽宁大连116013

出　　处：《沈阳工业大学学报》2013年第3期274-278,共5页Journal of Shenyang University of Technology

基　　金：辽宁省教育厅基金资助项目(202063300)

摘　　要：针对工业生产中摩擦磨损造成零件失效的现象,对材料表面耐磨损问题进行研究.采用钢水余热衬瓷技术,借助钢水散出的热量把陶瓷复合粉料烧结在铸钢件表面,形成了高耐磨性衬瓷层.磨损试验结果表明,衬瓷层磨损失重率是淬火45#钢的1/80;用SEM分析了涂层的显微组织,发现陶瓷颗粒比较均匀地分布在金属基体组织中,颗粒被基体金属紧紧包覆.分析认为,这些陶瓷颗粒承载着摩擦过程的大部分载荷,这种显微组织是耐磨性大幅度提高的重要原因之一.In order to overcome the failure phenomenon of parts caused by friction and abrasion which often exists in industrial production process, the problem concerning the abrasion resistance of material surface was researched. Through adopting the lining-ceramic technology with redundant heat of molten steel, the ceramic compound powders were sintered on the surface of casting steel with the heat dissipated from molten steel, and the lining-ceramic layer with high abrasion resistance was formed. The results of abrasion experiments reveal that the weight loss rate of lining-ceramic layer is as 1/80 as that of 45# steel. The microstructure of the layer was analyzed with scanning electron microscope （SEM）. It is found out that the ceramic particles homogenously distribute in the metal matrix, and are tightly clasped by the matrix metal. The analysis indicates that the ceramic particles can bear most loads in the friction process, and such microstructure feature is one of the important factors for the great improvement in abrasion resistance.

关 键 词：衬瓷层 碳化钨 合金粉 浇铸 复合粉 耐磨性 显微组织 钢水余热 

分 类 号：TB321[一般工业技术—材料科学与工程]