Determinación analítica de la eficiencia del proceso de soldadura (SMAW) en depósito de soldadura subacuática
Fecha
2009-06-20
Autores
González Pascual, Lenin
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Editor
Universidad Central "Marta Abreu" de Las Villas
Resumen
La transferencia de calor en una unión soldada esta ligada a la energía total que entra a la pieza, existiendo un paramento que regula en gran medida esa cantidad en cualquier proceso de soldadura y ese parámetro es la eficiencia. En el presente trabajo se muestra un estudio del cálculo de la eficiencia de depósitos de soldadura subacuática mojada, obtenidos a 50 metros de profundidad con electrodos de rutículo E7024 barnizado. Se parte de la determinación de la longitud de la zona afectada por el calor (ZAC) en [mm], mediante la utilización del Microscopio Metalográfico Neophot 32 con el objetivo de determinar mediante la ecuación de la temperatura pico (Tp) la energía neta que entra a la pieza (Hnet). Este cálculo se efectúa manteniendo constantes los paramentos del régimen de soldadura como son Intensidad de corriente, voltaje y velocidad. Se estima el tiempo de enfriamiento en el rango de temperaturas de 800 a 500ºC utilizando el programa computacional Yurioka. De los cálculos obtenidos, se evidencia que la eficiencia en el proceso de soldadura subacuática es menor de un 30 %.
The transfer of heat in a welded union this bound one to the total energy that enters to the piece, an adornment that regulates in great measure that quantity in any welding process existing and that parameter is the efficiency. Presently work is shown a study of the calculation of the efficiency of deposits of welding wet under water, obtained to 50 meters deep with rutículo electrodes lacquered E7024. She leaves of the determination of the longitude of the area affected by the heat (ZAC) in [mm], by means of the use of the Microscope Metalográfico Neophot 32 with the objective of determining by means of the equation of the temperature pick (Tp) the net energy that she enters to the piece (Hnet). This calculation is made maintaining constant the adornments of the welding régime like they are current Intensity, voltage and speed. He is considered the time of cooling in the range of temperatures from 800 to 500ºC using the program computational Yurioka. Of the obtained calculations, it is evidenced that the efficiency in the process of welding under water is smaller than 30%.
The transfer of heat in a welded union this bound one to the total energy that enters to the piece, an adornment that regulates in great measure that quantity in any welding process existing and that parameter is the efficiency. Presently work is shown a study of the calculation of the efficiency of deposits of welding wet under water, obtained to 50 meters deep with rutículo electrodes lacquered E7024. She leaves of the determination of the longitude of the area affected by the heat (ZAC) in [mm], by means of the use of the Microscope Metalográfico Neophot 32 with the objective of determining by means of the equation of the temperature pick (Tp) the net energy that she enters to the piece (Hnet). This calculation is made maintaining constant the adornments of the welding régime like they are current Intensity, voltage and speed. He is considered the time of cooling in the range of temperatures from 800 to 500ºC using the program computational Yurioka. Of the obtained calculations, it is evidenced that the efficiency in the process of welding under water is smaller than 30%.
Descripción
Palabras clave
Soldadura, Soldadura Subacuática, Transferencia de Calor, Eficiencia del Trabajo