EN23 is one of the most commonly used materials to fabricate forging die in Indian industries. The dies are manufactured through machining process and parameters have considerable impact on roughness value material’s surface. While forging, it was found that life varies with change parametric this took my interest investigate area. Speed rpm, feed mm/rev, depth cut mm were chosen as for investi...

In this paper investigations are conducted on the machining of EN-31 die steel with different electrode materials (copper, brass and graphite) with electrical discharge machining (EDM) process. This study presents the analysis and evaluation of heat affected zones (HAZ) of the workpiece surfaces machined using different tool electrodes by EDM. The kerosene oil of commercial grade has been used ...

Objectives: To evaluate the amnion graft in vaginoplasty, to assess the advantage of a flap placed over fourchette and to evaluate the benefit of gauze mould. Methods: Out of the 35 subjects of primary amenorrhea, eight with complete vaginal agenesis were selected for vaginoplasty. Half of these received split thickness skin graft and other half received amnion graft. An additional triangular f...

High-throughput manufacturing of transdermal microneedle arrays poses a significant challenge due to the high precision and number features that need be produced requirement multi-step processing methods for achieving challenging micro-features. To address this challenge, we report flexible cost-effective process chain array manufacture includes mould production using laser machining replicatio...

Drawing of square section rod from round bar can be done with two die shapes. In the first die shape, deformation starts from corners of the square and in second die shape, deformation starts from sides of square. This article has compared the drawing force for both die shapes and as a result optimum die shape was determined. Due to complexity of metal flow inside the die, analyzing of actual p...

The objective of this study is to present a new numerical strategy using soft computing techniques to determine the optimal die gap programming of extrusion blow molding processes. In this study, the design objective is to target a uniform part thickness after parison inflation by manipulating the parison die gap openings over time. To model the whole process, that is the parison extrusion, the...

Wire electric discharge machining (WEDM) is one of the advanced machining processes. Response surface methodology coupled with Grey relation analysis method has been proposed and used to optimise the machining parameters of WEDM. A face centred cubic design is used for conducting experiments on high speed steel (HSS) M2 grade workpiece material. The regression model of significant factors such ...

The application of ultrasonic vibration to the casting process can be realized through mould (die) vibration. However, resonant is always accompanied by a non-uniform distribution at different parts, which may induce complex liquid flow and affect fluidity during filling process. influence on AlSi9Cu3 alloy was studied with gradients. It found that generate two opposite effects fluidity: first,...

To reduce the time and cost of moulds fabrication, a novel integrated developing and manufacturing system of rapid tooling (RT) based on rapid prototyping (RP) is proposed. The architecture of system which consists of four building blocks: digital prototype, virtual prototype (VP), physical prototype and RT system, is presented. A digital prototype can be established by 3D CAD software packages...

During the past decade, polymer nanocomposites have emerged relatively as a new and rapidly developing class of composite materials and attracted considerable investment in research and development worldwide.Direct machining of polymers can be an option for personalized products and for manufacturing product samples. To obtain high quality products and reduce machining costs, it is very importa...