摘要
为了制备符合热锻模使用性能要求的模膛表面强化层,采用等离子熔覆技术,以W6为基体,在基体表面对不同含量SiC(质量分数)陶瓷粉末、Ni基自熔性粉末进行等离子熔覆,得到Ni基SiC合金涂层。对熔覆层横断面进行了显微硬度测量和显微组织分析,并对覆层的热物性参数进行检测。试验结果表明,添加镍基合金的涂层能够提高熔覆层的硬度,同时熔覆层能够得到很好的热物性能。
The strengthening coating was prepared on the molding chamber surface, which meet the requirement of the properties of hot forging die. Using plasma cladding technology, different content SiC （mass） ceramic powder and Ni-based self-fluxing powder on W6 steel were plasma-claded in order to obtain Ni-based SiC alloys coating. The microhardness and microstructure of the cross-section on the cladding were analyzed and the physical parameters of the cladding coating were measured. The results show that the hardness of the cladding coating can be enhanced by adding Ni-based alloys in coating, meanwhile the heat stress of the molding chamber can be relieved.
出处
《热加工工艺》
CSCD
北大核心
2008年第17期26-28,118,共4页
Hot Working Technology
基金
国家自然科学基金资助项目(50675165)
关键词
热锻模
等离子熔覆
表面强化
显微组织
hot forging die
plasma cladding
surface strenghening
microstructure
作者简介
金昊（1984-），男，湖北利川人，硕士研究生，研究方向：材料成型新技术；电话：13476008528；E-mail：jinhaofly@126．com
