Welding Metallurgy Second Edition By Sindo Kou Pdf
Welding Metallurgy Second Edition By Sindo Kou Pdf, It’s frequently referred to as stick welding. The electrode holder is attached via a welding cable to a terminal of the power supply and also the workpiece is attached via another cable into another terminal of the power supply (Figure 1.10a). The crux of the coated electrode, the center cable, conducts the electrical current to the arc and gives filler alloy to the joint. For electric contact, the upper 1.5 cm of the center wire is bare and held from the electrode holder.
The electrode holder is fundamentally a metallic clamp having an electrically insulated external casing to the welder to grip safely. The warmth of the arc induces the two the center wire and also the flux covering in the electrode tip to melt as droplets (Figure 1.10b). The molten metal accumulates from the weld pool and solidifies to the weld metal. The milder molten level, on the other hand, rests on the pool surface and divides to a slag layer near the peak of the weld metal.
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