Electrochemical polishing of tungsten mold

Wang，Fang; Deng，Hui

2018

European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 18th International Conference and Exhibition, EUSPEN 2018

395-396

Venice, Italy

euspen

Owing to its high melting temperature, low coefficient of thermal expansion and acceptable hardness, tungsten alloy has been considered as a very promising mold material for replacement of tungsten carbide for glass lens moulding. For removal of subsurface damage and improvement of surface roughness, polishing is an indispensable step in the manufacturing process of tungsten alloy molds. However, damage-free and highly efficient polishing of tungsten has not been realized yet. In this study, we report the abrasive-free polishing of tungsten alloy using electrochemical polishing (ECP) and apply this process to realize the highly efficient and high quality polishing of tungsten. After 30 min of ECP, the surface Ra roughness has been drastically reduced from 881.4 nm to 35.8 nm and the top surface, slope surface and bottom surface have all been polished. Meanwhile, it has been confirmed that the form accuracy has not been affected demonstrating that ECP is an effective approach for polishing of tungsten molds.

Damage-free Electrochemical etching Electrochemical polishing Noncontact polishing

第一

英语

EI

20184105929820

Electrochemical etching ; Electrolytic polishing ; Molds ; Nanotechnology ; Polishing ; Precision engineering ; Surface roughness ; Thermal expansion ; Tungsten alloys ; Tungsten carbide

Tungsten and Alloys:543.5 ; Machining Operations:604.2 ; Abrasive Materials:606.1 ; Nanotechnology:761 ; Inorganic Compounds:804.2 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

2-s2.0-85054551255

Scopus

,Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen, Guangdong,No. 1088, Xueyuan Road,518055,China

Wang，Fang,Deng，Hui. Electrochemical polishing of tungsten mold[C]:euspen,2018:395-396.