Novel magneto-rheological finishing process of KDP crystal by controlling fluid-crystal temperature difference to restrain deliquescence

作者：Yin, Yuehong^*; Zhang, Yifan; Dai, Yifan; Xiao, Qi; Tie, Guipeng

来源：CIRP Annals, 2018, 67(1): 587-590.

DOI：10.1016/j.cirp.2018.04.058

• Surface
• Temperature control
• Magneto-rheological finishing

To restrain surface deliquescence which directly influences surface quality and machining efficiency of polishing KDP crystal, this paper presents a novel water-dissolution magneto-rheological finishing process by controlling fluid-crystal temperature difference. Deliquescence mechanism is revealed from the perspective of deliquescence circle. Micro-condensation is proved as the main cause of deliquescence, which is restrained by fluid-crystal synergistic heating. Case test on KDP crystal verified that the humidity threshold of anti-deliquescence rises from 40% to 80%, which has realized synchronous improvements of machining efficiency as well as surface roughness and laser induced threshold on KDP crystal during the process of water-dissolution magneto-rheological finishing.

• 出版日期2018
• 单位中国人民解放军国防科学技术大学; 上海交通大学