... after sale service SJ101 is fluoride alkali type sintered flux; alkalinity is 1.8,spherical particles,granularity is 10 ... applied and when DC, the wire should be contacted straight polarity. APPLICATIONS:·Matched proper wire,e.g.H10Mn2,etc,it ... so on.· ATTENTION : a.Before welding,the welding flux should be baked at the temperature from 300 to 350 ... as rust,oil,moisture etc. SUBMERGED-ARC WELDING FLUX