A review on remanufacture of dies and moulds

2014 ◽  
Vol 64 ◽  
pp. 13-23 ◽  
Author(s):  
Changrong Chen ◽  
Yan Wang ◽  
Hengan Ou ◽  
Yan He ◽  
Xianzhi Tang
Keyword(s):  
Dies And Moulds

scholarly journals Study the effect of process parameters on Electric Discharge Machining: Literature Review

2019 ◽  
Vol 4 (1) ◽  
pp. 68-80
Author(s):  
Sandeep Yadav ◽  
Deepak k ◽  
Sarthak Sharma ◽  
Lalit Vashishth
Keyword(s):  
Automotive Industry ◽  
Metal Removal ◽  
Electrical Discharge Machining ◽  
Work Piece ◽  
Manufacturing Processes ◽  
Machining Parameters ◽  
Tool Wear Rate ◽  
Electric Discharge Machining ◽  
Thermoelectric Energy ◽  
Dies And Moulds

Electrical discharge machining (EDM) is one of the earliest non-conventional method of manufacturing processes. This process based on thermoelectric energy between work piece and electrodeand they must have electrical conductivity to generate the spark. A spark generated between work piece and electrode, and removes the material from work piece through melting and vaporizing. EDM produced various types of products such as dies and moulds. EDM is used to manufacture the parts of aerospace, automotive industry and surgical components. The effect of the machining parameters on surface roughness, metal removal rateand tool wear rate are studied.

Parametric Optimization of EN-31 Steel in Wire Cut Electro Discharge Machining by Taguchi Technique

2020 ◽  
Vol 12 (7) ◽  
pp. 881-887
Author(s):  
Sahil Sharma ◽  
Umesh Kumar Vates ◽  
Amit Bansal
Keyword(s):  
Material Removal Rate ◽  
Automobile Industry ◽  
Material Removal ◽  
Removal Rate ◽  
Dimensional Accuracy ◽  
Work Piece ◽  
Electro Discharge Machining ◽  
En 31 ◽  
The Impact ◽  
Dies And Moulds

Amongst the various methods of machining, Electro Discharge Machining is the convenient alternatives for the industries due to non-contact of work piece and tool. In the study of various EDM processes the main target is to achieve the better finish of surface, high material removal rate and good dimensional accuracy by regulating the different input parameters. There are various applications of EDM such as aerospace parts, medical equipments, dies and moulds, nuclear and automobile industry. In this experimental study, a trial has made to look the impact of input factors like pulse-on, pulse-off, peak current, tension of wire on rate of material removal, gap current and time for machining. Taguchi (L9 OA) and Analysis of Variance technique were used to optimize the outcomes for wire cut EDM of EN-31 tool steel. The outcomes revealed that Ton and Toff are the leading cogent factor for material removal rate and gap current respectively.

Quality assurance for concave-arc ball-end milling cutters

2003 ◽  
Vol 217 (2) ◽  
pp. 181-191 ◽  
Author(s):  
W-F Chen ◽  
H-Y Lai ◽  
C-K Chen
Keyword(s):  
End Milling ◽  
Spherical Surface ◽  
Numerical Control ◽  
Machining Accuracy ◽  
Milling Cutter ◽  
Modelling Procedure ◽  
Profile Errors ◽  
Complicated Surface ◽  
Dies And Moulds

This paper presents a systematic modelling procedure for assessing the profile quality of concave-arc ball-end (CABE) milling cutters with a cylindrical shank. CABE milling cutters are widely used in three-axis numerical control (NC) machines for producing dies and moulds of complicated surface features. Evaluation of the contour quality of the CABE milling cutter is crucial in enhancing machining accuracy and efficiency. In order adequately to describe the shape of the clamped cutter, the centre-line axis of the minimum circumscribed cylinder of the cylinder shank is taken as the referenced datum axis. The minimum circumscribed concave-arc revolving surface and the minimum circumscribed spherical surface are carefully derived in sequence. The profile errors and tolerances are estimated. The quality of the CABE milling cutter is assured by using the proposed modelling procedure, and several numerical examples are presented to illustrate its effectiveness. The results indicate that the present method is feasible and can be extended to enhance the quality of various revolving cutters.

Influence of Electrode Cooling on Material Migration among the Electrodes during EDM of Titanium Alloy

2011 ◽  
Vol 264-265 ◽  
pp. 1199-1204 ◽  
Author(s):  
Suleiman Abdulkareem ◽  
Ahsan Ali Khan ◽  
Mohamed Konneh
Keyword(s):  
Liquid Nitrogen ◽  
Electrical Discharge Machining ◽  
Electrically Conductive ◽  
Workpiece Surface ◽  
Hard Metals ◽  
Material Migration ◽  
Pulse On Time ◽  
Pulse Off Time ◽  
Off Time ◽  
Dies And Moulds

Electrical discharge machining (EDM) is widely used in the machining of electrically conductive hard metals for the production of dies and moulds. This paper describes an investigation of the effect of electrode cooling on the amount of elements migration from the electrode to the workpiece surface and from the workpiece to the electrode surface. In the present study EDM has been performed with electrodes cooled by liquid nitrogen as well as with electrodes without cooling. Current, pulse-on time, pulse-off time and voltage were taken as the variables during conducting the experiments. The analysis on material migration during EDM was carried out by SEM and EDX. It was observed that EDM with liquid nitrogen reduces material migration and minimizes the surface contamination of both the electrodes.

Sign in / Sign up

Export Citation Format

Share Document