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Copyright of Revista El Directivo al Día is the property of Centro de Informacion y Gestion Tecnologica (CIGET) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista El Directivo al Día is the property of Centro de Informacion y Gestion Tecnologica (CIGET) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In spite of having studied and applied electrodes with multiple coatings, in looked up literature the effect of the alloy change position, within the coating of electrodes destined to the hardfacing, on operating behavior has not been sufficiently referred. As objective of work determined the influence of the alloy charge position in the coatings of electrodes destined to hardfacing on the stability of the arc and the power consumption of the process, as from analysis, processing and comparison of electric oscilograms of the welding processes applied itself. For that, a study of the voltage and current wavesgive out by each variant of electrode prepared were accomplished: Same compositions of metallic core, alloy charge and coating; only has been changed the position of alloy charge. As a result, differences in stability and electric consumption of the processare appreciated. [ABSTRACT FROM AUTHOR]

The object of the present paper was to establish differences among one and twin coating electrodes dedicated to the manual filler process. The resulting relationship among the coating materials are established in 70 % of non-metallic compound and 30 % of alloy for each electrode type. For execute the work objective, two conventional procedures (immersion and extrusion) for manufacturing electrodes, as well as the influence of coating placement on the electrodes operational properties was evaluated. As result of experiment was obtained a twin coated electrode whish consume a 4,8 % less than power during the welding that one layer electrode (more economic), but with bigger quantity (27 %) of metal contributed by unit of time (bigger yield), less height of reinforcement (19,9 %) and greater depth of penetration (46,5 %). [ABSTRACT FROM AUTHOR]