Open AccessOptimal surface roughness of die steels in powder mixed electrical discharge machining using titan powder
Author(s) -
Long Tien Banh,
Phan Huu Nguyen,
Ngo Cuong,
Tuan Q. Nguyen
Publication year - 2016
Publication title -
khoa học công nghệ
Language(s) - English
Resource type - Journals
ISSN - 1859-0128
DOI - 10.32508/stdj.v19i1.616
Subject(s) - materials science , surface roughness , electrical discharge machining , electrode , machining , metallurgy , titanium , titanium powder , taguchi methods , composite material , polarity symbols , die (integrated circuit) , voltage , nanotechnology , chemistry , physics , breakdown voltage , quantum mechanics
This paper introduces the research results of surface roughness of steel molds after roughing and fine machining by PMEDM using titanium powder. The influence of the concentration of titanium powder mixed dielectric fluid to the surface roughness (Ra) is surveyed in roughing machining, and the regression equation to describe this relationship and the optimal value Ra (Ratoiuu) also be established. The process parameters: electrode material, workpiece material, electrode polarity, pulse on time, pulse of time, current and concentration of titanium powder is used in research on SR of fine machining. The influence of the process parameters to R through the average value of R and its ratio S/N has given By Taguchi method. Results indicated that: current, electrode material, pulse on time, electrode polarity and the interaction between the electrode material with powder concentration greatest impact to Ra and the optimal value Ratoiuu is 1.73 0.39µm.