Removal of Lead by  Tetra Hydroxyl Phenyl Porphyrin-Linked Magnetic Nanoparticles: Process Optimization by  Using Taguchi Design Method

This study presents the Taguchi design method with L9 orthogonal array which was carried out to optimize the flux-cored arc welding (FCAW) process parameters such as welding current, welding voltage, welding speed, and torch angle with reference to vertical for the ferrite content of duplex stainless steel (DSS, UNS S32205) welds. The analysis of variance (ANOVA) was applied, and a mathematical model was developed to predict the effect of process parameters on the responses. The results indicate that welding current, welding voltage, welding speed, torch angle with reference to vertical, and the interaction of welding voltage and welding speed are the significant model terms connected with the ferrite content. The ferrite content increases with the increase of welding speed and torch angle with reference to vertical, but decreases with the increase of welding current and welding voltage. Through the developed mathematical model, the target of 50% ferrite content in weld metal can be obtained when all the welding parameters are set at the optimum values. Finally, in order to validate experimental results, confirmation tests were implemented at optimum working conditions. Under these conditions, there was good accordance between the predicted and the experimental results for the ferrite content.

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Dimensional accuracy optimization of the micro-plastic injection molding process using the Taguchi design method

Materials Science ◽

10.5755/j01.ms.21.2.5864 ◽

2015 ◽

Vol 21 (2) ◽

Cited By ~ 1

Author(s):

Chil-Chyuan KUO KUO ◽

Hsin-You LIAO

Keyword(s):

Injection Molding ◽

Design Method ◽

Dimensional Accuracy ◽

Taguchi Design ◽

Plastic Injection Molding ◽

Injection Molding Process ◽

Molding Process ◽

Plastic Injection

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Material Handling and Assembly Process Optimization using Value Stream Mapping

IAES International Journal of Robotics and Automation (IJRA) ◽

10.11591/ijra.v6i1.pp59-68 ◽

2017 ◽

Vol 6 (1) ◽

pp. 59

Author(s):

Daniel Derrell Forest ◽

G.H. Massiha

Keyword(s):

Process Optimization ◽

Continuous Improvement ◽

Lean Manufacturing ◽

Material Handling ◽

Design Method ◽

Added Value ◽

Value Stream Mapping ◽

Assembly Process ◽

Workplace Design ◽

Value Stream

<span>The purpose of this project is to evaluate and optimize an assembly process for ergonomic and productivity considerations. Companies use lean manufacturing as a method for continuous improvement in order to increase throughput and for to reallocate resources for more important tasks. For this project, value stream mapping (VSM) was used to evaluate, analyze, and improve the ergonomic factors of an assembly process and to increasing throughput. With the use of VSM, researchers are able to see the areas of added value, non-added value, and bottlenecks. This project illustrates the implementation of VSM for the minimization of waste, by using the design method to restructure the process of assembly. The results show drastic improvement in assembly time and ergonomic workplace design, while providing a platform for a continuous improvement system.</span>

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