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xp574088
Wysłany: Nie 23:01, 03 Kwi 2011
Temat postu: CO2 arc welding in steel pipe butt weld of _1996
CO2 gas shielded arc welding in the pipe butt weld of steel
② fill welding. Step by backing weld bead filled completed weld . Welding process, the requirements should be slightly larger swings torch and stay in the right groove on both sides to ensure good fusion weld both sides of the weld surface is flat , slightly concave , the outer surface of the tube can not be melted edge groove . ③ capping . According to the order of welding bead filled completed capping . Swings the gun should be higher than fill welding and guaranteeing the groove on the outside edge of the pool edge 0.5mm ~ 2.5mrn. Welding speed should be uniform, and pay attention to fusion weld both sides of the edge of the well to prevent the biting edge, punch and weld the middle degree of overweight. To ensure that the weld appearance,
MBT schuhe preise
, I highly appropriate. Layer with the angle grinder to clean up flying objects , such as found in slag, pores, cracks and other defects must eradicate before welding, so as not to affect the quality of welding. Should be immediately removed after each welding nozzle and conductive mouth of the flying objects and inclusion , and apply anti- spatter solution to ensure good results. lO23 after welding, inspection and testing program and results. After welding tube welding on the 24h after sampling , were carried out tensile, bending , impact, metallographic sampling inspection, good mechanical properties of welded joints . Welder welder marked at the required code, then do X -ray detection test. Meet GB3323 - 87 standard requirements of more than two , the same welding parameters and the mechanical properties of test specimens to reach the base metal strength requirements. 4 Conclusions 1 ) The CO welding, can achieve semi-automatic , automatic welding , welding greatly improves the productivity (which is 3-5 times SMAW ), reduced the labor intensity of welders . 2) After the research on CO welding , testing and actual production in the field of application, we prove the CO than the traditional welding arc welding , welding energy, materials at least 1 / 3.3 ) The CO welding with automatic wire feed , Regulation , and the stability of welding wire feed , arc stability , easy operation , small splash in the pipeline welding, the welding quality to GB3323 - 87 standard requirements of more than two , it is difficult to achieve SMAW . CO welding will also gradually replace the steel welding rod will become the major arc welding methods. [
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