Storage procedure, electrodes, fluxcored wire, flux 焊条焊剂焊丝的储存

Moisture is still the main enemy for welding consumables. The minerals being used to form the slag that covers the weld pool are highly hygroscopic and should be taken very seriously for submerged arc powder and covered stick electrodes. Moisture also know how to find his way very quickly at folded flux cored wires and it only takes a few hours exposure to humidity before the general requirement of less than 5ml hydrogen in 100gr weld metal is exceeded. The most important steps to prevent hydrogen induced cracking are:

潮湿依然是焊才的大敌。用于保护焊接熔池的造渣矿物质都是吸湿性物质,因此对于焊剂和焊条药皮要格外小心。当有缝焊丝放置在潮湿环境中仅仅几个小时时,潮湿就会轻而易举的进入,致使焊缝金属H含量超过5ml/100g。防止氢致裂纹的关键步骤如下:

1)  Use airtight packing for covered electrodes  焊条要密封包装。
2)  Use seamless fluxcored wires for Mig/Mag welding  使用无缝的气体保护焊丝
3)  Always redry sub arc powders directly before use  牢记使用前烘干焊剂