Improvement of Surface Quality and Machining Depth of μ-ECDM Performances Using Mixed Electrolyte at Different Polarity

Silicon ◽  
2022 ◽  
Author(s):  
B. Mallick ◽  
B. R. Sarkar ◽  
B. Doloi ◽  
B. Bhattacharyya
Keyword(s):  
Surface Quality ◽  
Mixed Electrolyte

scholarly journals Improvement of Surface Quality and Machining Depth of µ-ECDM Performances Using Mixed Electrolyte at Different Polarity

2021 ◽  
Author(s):  
BIJAN MALLICK ◽  
B R SARKAR ◽  
B DOLOI ◽  
B BHATTACHARYYA
Keyword(s):  
Surface Quality ◽  
Pulse Frequency ◽  
Sem Analysis ◽  
Machining Process ◽  
Duty Ratio ◽  
Tool Electrode ◽  
Electrode Wear ◽  
Micro Channel ◽  
Reverse Polarity ◽  
Mixed Electrolyte

Abstract The production of miniature parts and various shape of micro-profile by electrochemical discharge micro-machining process (µ-ECDM) draw challenging attention to the researchers. Parametric influences as well as comparative analysis on machining depth (MD) and surface roughness (Ra) has been propounded using NaOH and KOH at the ratio of 1:0, 3:1, 1:1, 1:3 and 0:1 with their varying concentration(wt.%), and applied voltage (V), pulse frequency(Hz) and duty ratio (%)in straight as well as in reverse polarity using template guided stainless steel (SS) cylindrical tool with motion and spring feed mechanism for fabrication of different shapes of micro-channel like Zig-Zag, ‘Y’ shaped on glass by µ-ECDM process. Tool electrode wear rate (TEWR) has been reduced using mixed electrolyte and reversed polarity. The SEM analysis has been performed to identify the micro-crack and uncut debris into micro-channel. Machining depth has been increased up to 1850 µm with better surface quality using mixed electrolyte of NaOH:KOH::3:1 at direct polarity of 50 V and lower TEWR is found using NaOH:KOH::1:3 as electrolyte at reverse polarity.

The specification of surface quality—quo vadis?

1972 ◽  
Vol 51 (5) ◽  
pp. 171 ◽  
Author(s):  
J. Halling
Keyword(s):  
Surface Quality ◽  
Quo Vadis

AL 468 ALLOY

Alloy Digest ◽  
1995 ◽  
Vol 44 (6) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Oxidation Resistance ◽  
Surface Quality ◽  
Heat Treating ◽  
Temperature Performance ◽  
Chromium Stainless Steel

Abstract AL 468 is an 18% chromium stainless steel with dual stabilization by titanium and columbium. Small angular carbonitrides of both titanium and columbium are randomly dispersed, but develop improved surface quality, strength, and oxidation resistance when compared to Type 439. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-597. Producer or source: Allegheny Ludlum Corporation.

Concrete Surface Quality Improvement Technique Using Highly Water Repellent Sealing Method

2016 ◽  
Vol 54 (11) ◽  
pp. 1105-1110
Author(s):  
K. Watanabe ◽  
G. Sakai ◽  
N. Sakata ◽  
T. Ishida
Keyword(s):  
Quality Improvement ◽  
Surface Quality ◽  
Concrete Surface ◽  
Water Repellent

Schwingungsüberlagertes Axialformen/Superimposed Oscillated Axial Forming

2020 ◽  
Vol 110 (11-12) ◽  
pp. 838-843
Author(s):  
Philipp Müller ◽  
Bernd-Arno Behrens ◽  
Sven Hübner ◽  
Hendrik Vogt ◽  
Daniel Rosenbusch ◽  
...  
Keyword(s):  
Surface Quality ◽  
Economic Importance ◽  
Combined Effect ◽  
Wird Eine ◽  
Forming Force ◽  
Forming Process ◽  
Forming Technology ◽  
Great Economic Importance ◽  
Gear Geometry

Techniken zur Steigerung der Formgebungsgrenzen in der Umformtechnik sind von hoher wirtschaftlicher Bedeutung. In dieser Arbeit wird eine Schwingungsüberlagerung im Krafthauptfluss eines Axialformprozesses zur Ausprägung einer Verzahnungsgeometrie untersucht. Die Auswirkungen der Schwingung auf die erzielbare Ausfüllung der Zahnkavitäten werden analysiert sowie die Parameter Schmierung und Oberflächengüte der Halbzeuge in ihrer kombinierten Wirkung untersucht. Es konnte eine Reduzierung der mittleren Umformkraft sowie eine Erhöhung der Formfüllung festgestellt werden. Techniques for extending the production limits in forming technology are of great economic importance. In this research, a superimposed oscillation in the main force flow of an axial forming process to form an axial gear geometry is investigated. The effects of the superimposed oscillation on the achievable form-filling of the tooth cavities are analyzed and the parameters lubrication and surface quality of the semi-finished products are investigated in their combined effect. A reduction of the averaged forming force as well as an increase of the form-filling could be achieved.

Sign in / Sign up

Export Citation Format

Share Document