scholarly journals Optimization of process parameters to improve dimensional accuracy of investment casting using Taguchi approach

2019 ◽  
Vol 11 (4) ◽  
pp. 168781401984146 ◽  
Author(s):  
Sangita N Bansode ◽  
Vikas M Phalle ◽  
Shankar S Mantha
Keyword(s):  
Process Parameters ◽  
Investment Casting ◽  
Dimensional Accuracy ◽  
Taguchi Approach ◽  
Optimization Of Process Parameters

Optimization of process parameters for dimensional accuracy in an area-forming rapid prototyping system using the Taguchi method

2015 ◽  
Vol 29 (06n07) ◽  
pp. 1540011 ◽  
Author(s):  
Shih-Hsuan Chiu ◽  
Cheng-Chin Chen ◽  
Kun-Ting Chen ◽  
Chun-Hao Su
Keyword(s):  
Taguchi Method ◽  
Rapid Prototyping ◽  
Process Parameters ◽  
Processing Time ◽  
Simple Procedure ◽  
Dimensional Accuracy ◽  
Quality Characteristics ◽  
Optimization Of Process Parameters ◽  
Short Processing Time ◽  
Rapid Prototyping System

Rapid prototyping (RP) technologies have been extensively applied to build products in recent decades. The area-forming rapid prototyping is an emerging RP technology with the advantages of a simple procedure with a short processing time. With the expansion in fields of application, the strictness on product quality has also increased. The dimensional accuracy of a product is one of the most critical quality characteristics. In order to improve the dimensional accuracy of a product from an area-forming RP system, this study optimizes the seven factors via the Taguchi method, and the result is verified with an extra sample.

Experimental Investigations on Wire EDM of Al7075-TiB2 In Situ Metal Matrix Composite

2014 ◽  
Vol 592-594 ◽  
pp. 321-325 ◽  
Author(s):  
Varun R. Dalve ◽  
R. Keshavamurthy ◽  
G. Ugrasen ◽  
C.P.S. Prakash
Keyword(s):  
Process Parameters ◽  
Metal Matrix ◽  
Removal Rate ◽  
Dimensional Accuracy ◽  
Stir Casting ◽  
Experimental Investigations ◽  
Optimum Process ◽  
Casting Technique ◽  
Optimization Of Process Parameters

This paper focuses on optimization of process parameters for wire electric discharge machining (WEDM) of In-situ Al7075-TiB2 metal matrix composites processed by stir casting technique using Taguchi method of experimental design. The effect of pulse-on, pulse-off, current, and bed speed on dimensional accuracy, surface roughness and volumetric material removal rate (VMRR) have been investigated keeping voltage and flush rate constant. L27 orthogonal array of Taguchi technique was used for experimental trials. The optimum process parameters have been identified. Significant process parameters were identified from the analysis of variance (ANOVA). Further, verification experiment has been carried out to confirm the performance of optimum process parameters.

Parametric Influence and Optimization of Wire EDM on Oil Hardened Non Shrinking Steel

2011 ◽  
Author(s):  
Nixon Kuruvila ◽  
H. V. Ravindra
Keyword(s):  
Process Parameters ◽  
Removal Rate ◽  
Dimensional Accuracy ◽  
Optimum Process ◽  
Machining Parameters ◽  
Wire Edm ◽  
Flushing Rate ◽  
Optimization Of Process Parameters ◽  
The Matrix ◽  
Taguchi’S Technique

Wire-cut Electro Discharge Machining (WEDM) is a special form of conventional EDM process in which electrode is a continuously moving conductive wire. The present study aims at determining parametric influence and optimum process parameters of Wire-EDM using Taguchi’s Technique and Genetic algorithm. The variation of the performance parameters with machining parameters was mathematically modeled by Regression analysis method. The objective functions are Dimensional Accuracy (DA) and Volumetric Material Removal Rate (VMRR). Experiments were designed as per Taguchi’s L16 Orthogonal Array (OA) where in Pulse-on duration, Current, Pulse-off duration, Bed-speed and Flushing rate have been considered as the important input parameters. The matrix experiments were conducted for the material Oil Hardened Non Shrinking Steel (OHNS) having the thickness of 40 mm. The results of the study reveals that among the machining parameters it is preferable to go in for smaller pulse-off duration for achieving over all good performance. Regarding MRR, OHNS is to be eroded with medium pulse-off duration and higher flush rate. Finally, the validation exercise performed with the optimum levels of the process parameters. The results confirm the efficiency of the approach employed for optimization of process parameters in this study.

Investigations for dimensional accuracy of AMC prepared by using Nylon6-Al-Al2O3 reinforced FDM filament in investment casting

2016 ◽  
Vol 22 (3) ◽  
pp. 445-455 ◽  
Author(s):  
Sunpreet Singh ◽  
Rupinder Singh
Keyword(s):  
Process Parameters ◽  
Surface Finish ◽  
Investment Casting ◽  
Fused Deposition Modeling ◽  
Dimensional Accuracy ◽  
Flow Index ◽  
Intermediate Step ◽  
Content Type ◽  
Fused Deposition ◽  
Barrel Finishing

Purpose This paper aims to investigate the dimensional accuracy of aluminium (Al) matrix composites (AMCs) prepared by using an alternative reinforced fused deposition modeling (FDM)-based sacrificial patterns in investment casting (IC) process. Further in this work, a barrel finishing (BF) process has been introduced as an intermediate step for the improvement of surface finish of sacrificial patterns and to study the effect of BF process parameters on dimensional features of the casted AMCs. In the present research, an effort has been made to ascertain the capability/producibility of the proposed route for obtaining good geometrical tolerances. Design/methodology/approach Alternative reinforced FDM filaments were developed using single screw extruder whose melt flow index was matched with the commercial acrylonitrile–butadiene–styrene filament. IC sacrificial patterns, fabricated on existing FDM system without making any change in its hardware/software, were barrel finished for improving the surface finish. The effect of FDM, BF and IC process parameters, namely, type of filament, volume of CAD-based cubical pattern, pattern density, BF time, BF media weight and numbers of IC slurry layers, was studied using Taguchi L18 OA approach. Findings Dimensional accuracy of casted AMCs developed was optimized successfully using Taguchi L18 orthogonal array. Optical microscopic analysis made on the castings highlighted the presence of Al2O3 particles which will result into the improvement of mechanical and tribological properties. International tolerance grade of cast AMCs was calculated and found acceptable as per ISO standard UNI-EN-20286-I (1995). Further, there are strong possibilities of process to be under statistical control at proposed settings. Originality/value The paper describes a new route for the development of AMC. The effect of FDM, BF and IC process parameters on dimensional accuracy of AMCs developed is also highlighted in the present research.

Optimization of Process Parameters for Vacuum Casting Micro-Gear

2011 ◽  
Vol 464 ◽  
pp. 698-702
Author(s):  
Y.C. Dai ◽  
Jian Zhong Zhou ◽  
Shu Huang ◽  
J. Guo ◽  
L. Xiao
Keyword(s):  
Process Parameters ◽  
Dimensional Accuracy ◽  
Casting Process ◽  
Vacuum Casting ◽  
Optimization Of Process Parameters ◽  
Micro Parts ◽  
Master Pattern ◽  
Micro Features ◽  
Silicone Mould

A silicone mould fabrication technique based on vacuum casting was developed and its reproducibility was demonstrated. Orthogonal DOE method was adopted to analyze the effects of vacuum casting process parameters, and the process parameters that had an influence on the quality of the micro-mould cavities were identified and optimized. Micro-casting experiments were carried out using the optimized process parameters and the replicated micro-gears were obtained, these silicone copies were subjected to thorough analysis for dimensional accuracy against the master pattern. The results showed that the fabricated micro-mould was capable of producing functional micro-parts that were able to replicate micro-features, and micro-gears were successfully transferred from the silicone rubber moulds into PU resin pieces under vacuum conditions.

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