摘要
通过星点设计响应面法优化自润滑型无铬钝化液配方。采用辊涂法在热镀锌钢板表面制备自润滑型无铬钝化膜。使用3D表面形貌轮廓仪和扫描电镜研究了膜层的微观组织;引入支架与填充剂结构参数λ;利用有限元分析方法,分析模型摩擦过程中的温度场、应力场变化;选用薄膜热电偶和激光干涉仪验证有限元等效模型的适用性。结果表明,自润滑型无铬钝化膜为多孔结构且填充剂能改善膜层表面的粗糙度,λ=0.25时膜层的摩擦磨损性能最优。此外,有限元分析结果与实验结果有较好的吻合度,可为金属表面自润滑型多孔膜层的研究提供参考。
The formula of the chromium-free self-lubricating passive solution was optimized by star point design response surface method.The chromium-free self-lubricating passive film was prepared on the surface of hot-dip galvanized steel sheet by roll coating method.The microstructure of the film was investigated by 3D surface topography profiler and scanning electron microscope.The support and filler structural parameterλwas introduced.The finite-element analysis method was used to analyze the change of temperature field and stress field of the model during abrasive.The thin film thermocouple and laser interferometer were used to verify the applicability of the finite-element equivalent model.The results show that the chromium-free self-lubricating passive film is porous and the filler can improve the roughness of the film surface.Whenλ=0.25,the friction and wear properties of the film are the best.In addition,the finite-element analysis results are in good agreement with the experimental results,which can provide reference for the research of self-lubrication porous film on metal surface.
作者
孟堃
王伟
许哲峰
于晓华
王远
MENG Kun;WANG Wei;XU Zhefeng;YU Xiaohua;WANG Yuan(School of Machinery&Transportation Engineering,Southwest Forestry University,Kunming 650224,China;National Engineering Research Center of Solid Waste Resource,Kunming University of Science and Technology,Kunming 650031,China)
出处
《热加工工艺》
北大核心
2019年第10期140-144,共5页
Hot Working Technology
基金
国家自然科学基金项目(51601081,51665022)
云南省教育厅科学研究基金研究生项目(2017YJS090)
云南八大重点产业品牌专业建设项目(51600631).
关键词
组织结构
自润滑
无铬钝化膜
有限元分析
结构参数
microstructure
self-lubricating
chromium-free passive film
finite-element analysis
structure parameters
作者简介
孟堃(1986-),男,黑龙江牡丹江人,硕士研究生,从事金属材料表面改性研究,电话:0871-63862648,E-mail:mengkun010@163.com;通讯作者:王远(1978-),男,贵州湄潭人,副教授,工学博士,从事材料表面改性研究,电话:0871-63862648,E-mail:wyuan88@126.com