Optimization Of Mechanical Properties Of 500/7 Grade Ductile Cast Iron (DCI) By Using SMAW: Applications In Reinforced Composites And Thermoplastics Through Taguchi & GRA

Year : 2025 | Volume : 13 | Issue : 02 | Page : 204 222
    By

    Aamir R. Sayed,

  • Devesh Kumar,

  1. Research Scholar, Mechanical Engineering, Poornima University, Jaipur, Rajasthan, India
  2. Faculty, Department of Engineering & Technology, Poornima University, Jaipur, Rajasthan, India

Abstract

Welding, a critical manufacturing process, is broadly engaged to join metals and thermoplastics using heat, pressure, or both. This study inspects the Shielded Metal Arc Welding (SMAW) method to optimize welding parameters and improve the mechanical properties of Ductile Cast Iron (DCI) grade 500/7, a material widely used in high-strength and thermal conductivity applications in aerospace and automotive sectors. Using an L9 OA (orthogonal array), experiments were conducted on nine plates welded with A-1600 electrodes under varying input parameters: current (100, 110, 120 A), preheat temperature (250, 300, 350°C), and interpass temperature (100, 200, 300°C). The mechanical properties—hardness, tensile strength, and impact resistance—were evaluated through destructive testing (DT), while non-destructive testing (NDT) methods included Dye Penetration Testing (DPT), Magnetic Particle Testing (MPT), Radiographic Testing (RT), and visual inspection. The Investigation was performed using the Taguchi-(Grey Relational Analysis) GRA optimization method. Results revealed that electrode A-1600 provided superior performance, with current identified as the most significant factor. Optimal welding parameters—achieved in Experiment 4—embraced a current of 110 A, a preheat temperature of 250°C, and an interpass temperature of 200°C.The findings offer valuable understandings into improving material performance for reinforced composites and thermoplastics, highlighting the significance of parameter optimization in high-performance engineering applications.

Keywords: Mechanical Properties, Reinforced Composites and thermoplastics , High-Strength Applications, Welding Optimization, Taguchi Method, Grey Relational Analysis.

[This article belongs to Journal of Polymer and Composites ]

How to cite this article:
Aamir R. Sayed, Devesh Kumar. Optimization Of Mechanical Properties Of 500/7 Grade Ductile Cast Iron (DCI) By Using SMAW: Applications In Reinforced Composites And Thermoplastics Through Taguchi & GRA. Journal of Polymer and Composites. 2025; 13(02):204-222.
How to cite this URL:
Aamir R. Sayed, Devesh Kumar. Optimization Of Mechanical Properties Of 500/7 Grade Ductile Cast Iron (DCI) By Using SMAW: Applications In Reinforced Composites And Thermoplastics Through Taguchi & GRA. Journal of Polymer and Composites. 2025; 13(02):204-222. Available from: https://journals.stmjournals.com/jopc/article=2025/view=200822


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Regular Issue Subscription Original Research
Volume 13
Issue 02
Received 24/12/2024
Accepted 06/02/2025
Published 25/02/2025
Publication Time 63 Days
241

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