Influencia del contenido de oxígeno atmosférico en el proceso de purgado con argón en la soldadura TIG de tubería de acero inoxidable AISI 304
| Autor: | Segundo Manuel Espín Lagos, Cristian Fabián Pérez Salinas, Diana Carolina Coello Fiallos, Jorge Patricio Guamanquispe Toasa, Jorge Alexandro Paredes Zumbana |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
lcsh:TN1-997
Heat-affected zone Materials science heat-affected area 020209 energy 0211 other engineering and technologies chemistry.chemical_element 02 engineering and technology Welding Purge Oxygen lcsh:Technology law.invention mechanical strength law 021105 building & construction discoloration 0202 electrical engineering electronic engineering information engineering Base metal atmospheric oxygen lcsh:Mining engineering. Metallurgy Argon Atmospheric oxygen lcsh:T Gas tungsten arc welding Metallurgy General Engineering chemistry purged |
| Zdroj: | Dyna, Vol 86, Iss 208, Pp 355-361 (2019) |
| ISSN: | 2346-2183 0012-7353 |
| Popis: | TIG welding was performed on AISI 304 stainless steel pipes purged with argon, the amounts of atmospheric oxygen in the purge chamber analyzed in this work were 999, 500, 200, 100, 50, 25 and 10 ppm that used to determine as the amount of oxygen affects the superficial quality of the heat affected zone (HAZ) in the internal part of the pipe. In this study, mechanical tests, metallographic analysis and morphological study were carried out. We determined that the levels of discoloration in the HAZ are directly influenced by the amount of atmospheric oxygen present in the purge, with amounts between 50 to 10 ppm the discoloration is according to AWS D18.1 and AWS D18. 2 standards. While was evidenced good resistance in the welded joint because the failure occurs in the base metal and not in the HAZ which has not influence of surface discoloration corresponding to 10 ppm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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