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philip banuag

on 25 September 2012

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Transcript of Welding

Big and.... ... small 1 MIDDLE AGES "Blacksmiths were known of their work being similar to welding..." BRONZE AGE NIKOLAI BENARDOS -"Father of Welding" FROM THEN ON, THE EVOLUTION AND

DEVELOPMENT OF WELDING CONTINUED.... ` MANY TYPES OF WELDING PROCESS HAS THEN BEEN CREATED WHICH SUITS THE USER AND THE PRODUCT BEING WELDED... TIG WELDING SET-UP ELECTRIC ARC WELDING SAFETY WELDING WEAR AND REMEMBER! TYPICAL ARC WELDING "process utilizing the concentrated heat of an electric arc to join metal by fusion" Electroslag Welding "deposits the weld metal into the weld cavity between the two plates to be joined" Gas Metal Arc Welding(GMAW) also known as METAL INERT GAS WELDING (MIG) -shields the weld zone with an external gas such as argon, helium, carbon dioxide, or gas mixtures.
-uses an aluminium alloy wire as a combined electrode and filler material
-uses a direct current power source CURVY VW BUG Tungsten Inert Gas (TIG) Weding also known as
Gas Tungsten-Arc
Welding (GTAW) -uses tungsten electrodes as one pole of the arc to generate the heat required
-especially suited to thin materials producing welds of excellent quality and surface finish Shielded-Metal Arc Welding (SMAW) -one of the oldest, simplest, and most versatile arc welding process
-arc is generated by touching the tip of a coated electrode to the workpiece and withdrawing it quickly to an appropriate distance to maintain the arc Plasma Arc Welding (PAW) "uses electrodes and ionized gases to generate an extremely hot plasma jet aimed at the weld area" Submerged Arc Welding (SAW) "shields the weld arc using a granular flux fed into the weld zone forming a thick layer that completely covers the molten zone and prevents spatter and sparks" "by his method, an arc was formed between essentially moderately consumable carbon electrode and the work piece, a rod was then added to provide needed extra metal" DO YOU NOW SEE THE LIGHT? Applications
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