Through-mask electrochemical machining of a large-area hole array in a serpentine flow channel

2016 ◽  
Vol 89 (1-4) ◽  
pp. 933-940 ◽  
Author(s):  
Hansong Li ◽  
Guoqian Wang ◽  
Ningsong Qu ◽  
Di Zhu
Keyword(s):  
Electrochemical Machining ◽  
Flow Channel ◽  
Hole Array ◽  
Large Area ◽  
Mask Electrochemical Machining ◽  
Serpentine Flow Channel

scholarly journals Ultrasound-Assisted Through-Mask Electrochemical Machining of Hole Arrays in ODS Superalloy

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5780
Author(s):  
Guoqian Wang ◽  
Yan Zhang ◽  
Hansong Li ◽  
Jian Tang
Keyword(s):  
High Surface ◽  
Electrochemical Machining ◽  
Oxide Dispersion Strengthened ◽  
Ultrasonic Cavitation ◽  
Hole Array ◽  
High Surface Quality ◽  
Micro Hole ◽  
Ultrasound Assisted ◽  
Hole Arrays ◽  
Mask Electrochemical Machining

Micro-hole arrays have found wide applications in aerospace, precision instruments, and biomedicine. Among various methods of their production, including mechanical, laser, and electrical discharge, electrochemical machining (ECM) is considered the most lucrative due to its wide processing range, high surface quality, and excellent productivity. In particular, ultrasound-assisted through-mask ECM exhibits an enhanced machining precision due to ultrasonic cavitation, which promotes the removal of the electrolytic products and bubbles. In this study, the equation of cavitation bubble oscillation was derived and numerically solved to study the influence of six different parameters on the ultrasonic cavitation and electrolysis process, and their optimal values were determined. The feasibility of the proposed ultrasound-assisted through-mask ECM technology with the optimized parameters was experimentally corroborated by the fabrication of a high-quality hole array in an oxide dispersion strengthened (ODS) MA956 superalloy.

Experimental Investigation of Fabrication of Double Tapered Hole Array by Using Electroforming and Mask Electrochemical Machining

2014 ◽  
Vol 941-944 ◽  
pp. 2140-2144
Author(s):  
Xiao Hui Bao ◽  
Ping Mei Ming ◽  
Zhen Bin Lv
Keyword(s):  
Electrochemical Machining ◽  
Hole Array ◽  
Substrate Thickness ◽  
Wall Angle ◽  
Metal Mask ◽  
Good Surface ◽  
Mask Electrochemical Machining ◽  
Electrochemical Fabrication ◽  
Through Hole ◽  
Tapered Hole

Basing on an inert perforated metal mask, a hybrid electrochemical fabrication combining electroforming and mask electrochemical machining was proposed to manufacture metal through-hole array with double tapered openings. The feasibility of this novel process was investigated experimentally. The effects of pattern parameters of inert metal mask, such as wall angle, α, substrate thickness, H, hole spacing, L and hole size, D, on profiles of the resulting holes were analyzed. The experimental results show that the hybrid fabrication is able to manufacture high-aspect-ratio double tapered hole array with good surface quality.

Effect of Width of a Serpentine Flow Channel on PEM Fuel Cell Performance

2021 ◽  
Author(s):  
Srinivasa Reddy Badduri ◽  
Ramesh Siripuram ◽  
Naga Srinivasulu G ◽  
Srinivasa Rao S
Keyword(s):  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Flow Channel ◽  
Cell Performance ◽  
Fuel Cell Performance ◽  
Serpentine Flow Channel

305 Prediction of flow crossover in the GDL of PEFC using serpentine flow channel

2010 ◽  
Vol 2010.23 (0) ◽  
pp. 301-302
Author(s):  
Genki HAYASHI ◽  
Litan Kuma SAHA ◽  
Nobuyuki OSHIMA
Keyword(s):  
Flow Channel ◽  
Serpentine Flow Channel
Sign in / Sign up

Export Citation Format

Share Document