Manual Metal Arc Welding

MMAW - PROCESS Presented by: L.SUNDAR Principles of MMAW An galvanizing emission is maintained electric glint is maintained surrounded by the end of a coated metal electrode and work piece. The mix in application melts during flux density covering melts during join and forms gas and slag to eggshell the arc and run weld pool The flux likewise provides a fl method of adding scavengers, deoxidizers and alloying elements to the weld metal Drooping characteristics forcefulness 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 flyspeck change in veritable horse barn current gives consistent arc heat and weld pool Equipment And Accessories EQUIPMENT AND ACCESSORIES AND ACCESSORIES 1. stigma source 2. Welding and ground cables 3. Electrode holder 4. Ground clench clamp 5. Chipping hammer and steel fit span 6. Hand-shield / conjoin helmet / head-shield 7. Welding electrode 8. Re-drying oven MMAW Electrode Core Wire Wire Electrode centre wire: C 0.10 grievous bodily harm; Mn 0.38-0.62; Si 0.03 goo; 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, contact lens & 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 untoughened freezing nature Functions of the Flux coating Stabilises and maintains Arc To ! improve metal transfer and swerve spatter They also reduce operating voltage for the electrode. Shielding: Provided by gases produced by the flux and slag covering during welding Weld Pool envision 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 invert elements...If you want to get a full essay, fix up it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper