NUST Institutions Library Catalogue

Evaluating the Effects of Shielding Gas Composition on Arc Plasma in Gas Metal Arc Welding (GMAW) / (Record no. 607215)

000 -LEADER
fixed length control field 02713nam a22001577a 4500
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number 621
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name Tanweer, Hassan
245 ## - TITLE STATEMENT
Title Evaluating the Effects of Shielding Gas Composition on Arc Plasma in Gas Metal Arc Welding (GMAW) /
Statement of responsibility, etc. Hassan Tanweer
264 ## - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE
Place of production, publication, distribution, manufacture Islamabad :
Name of producer, publisher, distributor, manufacturer SMME- NUST;
Date of production, publication, distribution, manufacture, or copyright notice 2023.
300 ## - PHYSICAL DESCRIPTION
Extent 101p.
Other physical details Soft Copy
Dimensions 30cm
520 ## - SUMMARY, ETC.
Summary, etc. Gas metal arc welding (GMAW) is one of the prime arc welding processes in which an electric<br/>arc is formed between a consumable wire electrode and the metal work piece, which heats the<br/>metal work piece allowing them to join by melting. Significant advancements have been made in<br/>this field in recent years to improve and optimize welding performance with high efficiency and a<br/>higher rate of production. The shielding gas is an essential component of gas shielded welding<br/>processes, its purpose is to shield the weld area from atmospheric gas contamination and provide<br/>a transport medium for the electrical current to flow. It is crucial to determine an ideal composition<br/>of the shielding gas to achieve its effective exploitation and thereby optimization of the process.<br/>A shielding gas mixture composing of two or more gases is commonly used in GMAW to benefit<br/>from the distinguishing abilities of each gas. The shielding gas composition is known to affect<br/>various weld aspects including arc characteristics, metal transfer process, weld appearance,<br/>geometry, and mechanical properties. These factors play a crucial role in determining the weld<br/>quality. In this research, a two-component mixture of the shielding gas is used in GMAW. The<br/>research primarily focuses on evaluating the effect of different mixtures of shielding gases on arc<br/>characteristics including temperature distribution, pressure distribution, flow velocity, current<br/>density, electric potential, and electric field along with a DH-36 steel workpiece considered<br/>through numerical simulation in Ansys CFX. We use different inert and reactive gases to observe<br/>the influence of shielding gases. The effects of pure argon, as well as varying percentages of O2<br/>and CO2 mixed with argon, are observed. The obtained results are analyzed using diverse<br/>properties of the shielding gases including density, viscosity, electrical conductivity, thermal<br/>conductivity, radiative emission coefficient and specific heat. This research is aimed at guiding the<br/>manufacturing industries in utilizing the shielding gases in an optimized way and improve the<br/>overall welding efficiency.
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element MS Mechanical Engineering
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name Supervisor : Dr. Emad Uddin
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="http://10.250.8.41:8080/xmlui/handle/123456789/39095">http://10.250.8.41:8080/xmlui/handle/123456789/39095</a>
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme
Koha item type Thesis
Holdings
Withdrawn status Permanent Location Current Location Shelving location Date acquired Full call number Barcode Koha item type
  School of Mechanical & Manufacturing Engineering (SMME) School of Mechanical & Manufacturing Engineering (SMME) E-Books 12/07/2023 621 SMME-TH-931 Thesis
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