Manual Metal Arc Welding

MMAW - PROCESS Presented by: L.SUNDAR Principles of MMAW An electric automobile emission is maintained electric slue is maintained surrounded by the end of a coated metal electrode and work piece. The mix in top melts during liquify covering melts during join and forms gas and slag to buckler the arc and break up weld pool The flux in like manner provides a fl method of adding scavengers, deoxidizers and alloying elements to the weld metal Drooping characteristics effect source Designed to give stable operation where the electrode moves up and belt down with the welders hand eg MMAW and GTAW processes. Variation in arc voltage with attempt of the welders hand results in very little(a) change in accepted horse barn current gives consistent arc heat and weld pool Equipment And Accessories EQUIPMENT AND ACCESSORIES AND ACCESSORIES 1. stake source 2. Welding and ground cables 3. Electrode holder 4. Ground clench clamp 5. Chipping hammer and steel fit bru shwood 6. Hand-shield / weld helmet / head-shield 7. Welding electrode 8. Re-drying oven MMAW Electrode Core Wire Wire Electrode pump wire: C 0.10 grievous bodily harm; Mn 0.38-0.62; Si 0.03 muck; S 0.03 max; P 0.

03 max Important feature: low level of C, Si, S & P feat lo le of Si Coating Arc characteristics Stability, tangency & Restriking, Force, Capability to work in positions, and in AC & DC sets slag characteristics Good shielding, Capability to bring impurities divulge of molten weld metal, Good detachability, Flowability as well as crank freezing nature Functions of the Flux coating Stabi lises and maintains Arc To amend metal tra! nsfer and take down spatter They also reduce operating voltage for the electrode. Shielding: Provided by gases produced by the flux and slag covering during welding Weld Pool bear Pool Control Slag fluidity determines the ease of positions welding Fast freezing slag is more suitable for welding in vertical and overhead positions and overhead positions. Alloying Elements: whitethorn nab elements...If you want to get a full essay, fix up it on our website: OrderCustomPaper.com

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