Narrow Results

The production of miniature parts by the electrochemical discharge micromachining process ($\mu$-ECDM) draws the most of attractions into the industrial field. Parametric influences on machining depth (MD), material removal rate (MRR), and overcut (OC) have been propounded using a mixed electrolyte (NaOH:KOH- 1:1) varying concentrations (wt.%), applied voltage ($V$), pulse on time ($\mu$s), and stand-off distance (SOD) during microchannel cutting on silica glass (SiO${}_2+{\mathrm{\text{NaSiO}}}_3$). Analysis of variances has been analyzed to test the adequacy of the developed mathematical model and multiresponse optimization has been performed to find out maximum MD with higher material removal at lower OC using desirability function analysis as well as neural network (NN)-based Particle Swarm Optimization (PSO). The SEM analysis has been done to find unexpected debris. MD has been improved with better surface quality using a mixed electrolyte at straight polarity using a tungsten carbide (WC) cylindrical tool along with $X$, $Y$, and $Z$ axis movement by computer-aided subsystem and combining with the automated spring feed mechanism. PSO-ANN provides better parametric optimization results for micromachining by the ECDM process.

This paper inspects wetting rules of normal acid, alkanol and alkane on surfaces of stainless steel, platinum sheet and monocrystalline silicon and contrasts the influence on wetting effect by polarity difference. Experimental results show that for alkane not containing functional groups, the increasing of carbon number is beneficial to the enhancement of wetting effect; optimum wetting reagents for different surface present obvious selectivity, and for alkane, the wetting effect of stainless steel, platinum sheet and monocrystalline silicon is from good to bag in sequence. For organic alcohol and organic acid, the sequence is monocrystalline silicon, platinum sheet and stainless steel. Organic alcohol and organic acid are monocrystalline silicon, platinum sheet and stainless steel. Liquid solid interface polarity contrast shows that certain wetting difference is beneficial to the enhancement of wetting effect.