Design, Optimization And Prototyping Of Multipurpose Weld Electrode Holder

Tan, Beng Hong (2013) Design, Optimization And Prototyping Of Multipurpose Weld Electrode Holder. Project Report. UTeM, Melaka. (Submitted)

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Abstract

For open root pass weld, commercial cellulose electrode is widely used in pipeline construction industry especially for welding oil or gas pipes. Cellulosic coated electrode, due to its high hydrogen content, will lead to hydrogen cracking in welds. Moreover, the high usage of cellulose electrode will indirectly contribute the destruction of plants and cause environment degradation. In spite of these two major draw backs pipeline industry is keep on using the electrodes mainly due to the ability of cellulose electrodes in making high penetration ‘all purpose’ welds. An attempt is made hence to design, optimize and prototyping of a Multipurpose Weld Electrode Holder in order to find a way to replace cellulose in electrodes coatings for SMAW process.The concept design was made in such a way that it will minimize the usage of cellulosic, by using a secondary gas supplied through the tubular electrode. The Multipurpose Weld Electrode Holder was made in accordance with the standard engineering design methodologies in product development through problem identification, house of quality, concept generation, concept evaluation, concept selection, modeling sizing of part, DFX, material selection, manufacturing process selection, detail design and prototyping.

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