Thermadyne Firepower Welding System FP-90 Manual De Instrucciones página 17

Sistema de soldadura sin gas (fcaw)
Tabla de contenido

Publicidad

2. El aluminio frecuentemente se anodiza para evitar la oxidación. Sin embargo, una superficie anodizada NO conduce la
electricidad. Por esa razón, para soldar aluminio anodizado, se DEBE lijar o esmerilar la capa anodizada de la zona de
la junta y del punto en donde se conectará la pinza de la pieza a trabajar.
Averigüe si el aluminio que pretende soldar es o no anodizado. Toque con
las dos sondas de un probador de continuidad eléctrica u ohmímetro el
aluminio en cuestión. Coloque las sondas con una separación de una o dos
pulgadas. Si no hay indicación de continuidad eléctrica, el aluminio es
anodizado.
Si las piezas del metal de base que se van a unir son gruesas o pesadas,
probablemente habrá que biselar los bordes (con una rectificadora de
metales) en el punto de contacto, como se muestra en la figura 6. El ángulo
del bisel deberá ser de 60º, aproximadamente.
evitar lesiones en los ojos cuando repase los metales con muelas abrasivas. También,
inspeccione la rectificadora y verifique que esté en buenas condiciones.
Refiérase al cuadro, Tipos de juntas de soldadura, en la figura 7, para las instrucciones en detalle para la preparación de
la junta a soldar.
Durante el proceso de soldadura, las piezas que se están soldando se calientan y expanden. La expansión puede causar el
desplazamiento de las piezas. De ser posible, fije las piezas a soldar en la posición que van a ocupar una vez que esté
terminada la soldadura.
Use SIEMPRE gafas protectoras para
Figura 7: Tipos de juntas de soldadura
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Figura 6: Preparación de la pieza a trabajar
13
INCORRECTO
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