( 1 ) easy arc , to ensure stable arc, little spatter during welding .( 2 ) coating melting speed should be slower than the speed of welding core melt to cause flared sleeve ( sleeve length should be less Nickel Welding Electrodes than the welding core diameter ) , is conducive toDroplet and the resulting protective atmosphere ;( 3 ) the proportion of slag should be less than the proportion of molten metal solidification temperature should be slightly lower than the solidification temperature of the slag shell should be easy to take off ;( 4 ) a blend of gold metallurgical treatment effect ;( 5 ) to adapt the position of the welding.