摘要
磁介质相和磨粒相的粒径比直接影响磁性磨粒的导磁性能和磨削性能。通过建立力学模型,研究了磁介质相和磨粒相的粒径比A与工件磨削作用力的关系,推导出理论范围为A=1.12-3.34。提出采用硅烷偶联剂KH-550对铁磁相和磨粒相表面化学包覆改性,以聚乙烯醇为粘结剂制备非固结磁性磨粒,用三种不同粒径比的非固结磨粒对304不锈钢薄板研磨加工,结果表明:当粒径比A为3.04时,加工15min后工件表面粗糙度Ra值从0.344μm降到0.036μm,加工效果最好,表面微观形貌得到明显改善,与理论计算范围一致。
it diameter ratio between magnetic medium phase and abrasive phase has directly effects on the magnetic properties and grind performance of magnetic abrasive particles.By establishing mechanical model,this paper researched the relationship between the particle diameter ratio of magnetic medium phase and abrasive phase and grinding force,deducing the theoretical range is 1.12-3.34.The iron particles and abrasive particles were modified and coated by silane coupler,and then they were bonded by polyvinyl alcohol to prepare the unconsolidated magnetic abrasive particles.The 304 stainless steel sheets are machined by unconsolidated abrasive particles of three different diameter ratios.The results show that finishing effect is best and the surface morphology is obviously improved when the particle diameter ratio A is 3.04,which is consistent with the theoretical range.The surface roughness Ravalue of workpiece can reduce from 0.344μm to 0.036μm after machined 15 minutes.
作者
任晓静
陈红玲
杨胜强
侯志燕
REN Xiao-jing;CHEN Hong-ling;YANG Sheng-qiang;HOU Zhi-yan(School of Mechanical Engineering Taiyuan University of Technology,Shanxi Taiyuan 030024,China;Shanxi Key Laboratory of Precision Machining,Shanxi Taiyuan 030024,China)
出处
《机械设计与制造》
北大核心
2018年第10期89-92,共4页
Machinery Design & Manufacture
基金
精密加工山西省重点实验室国家自然科学基金(51175365)
山西省科技攻关项目(20120321008-02)
关键词
非固结磁性磨粒
磁性磨粒光整加工
粒径比
偶联剂
表面改性
Unconsolidated Magnetic Abrasive Particles
Magnetic Abrasive Finishing
Particle Diameter Ratio
Coupling Agent
SurfaceModification
