Agglomerated Flux , Welding Flux, Welding Consumable

lh-sj301 is a kind of silicon-calcium-type sintered flux,mesh 10-40(2.0-0.45mm) and basicity -- 1.0-1.1. Either alternating or direct current can be used,but welding wires must be connected with the positive electrode when direct current is used.the welding technology has good performance,fine detachability and fine appearance of weld.
Usage:
the flux is fit for the submerge-arc welding of low-carbon steel and low-alloy steel,as well as the fast single-way and double-surface welding of thin steel sheet.and it is usually used for the submerge-arc welding of liquefied gas storage tanks,gas bottles and pipeline steel.
Cautione:
1.the oil soil,moisture,iron rust and other foreign substances must be removed from the welding joint.
2.the welding flux must be baked under 300-350ºc for 2 hours.
3.it's better to use direct current.
Chemical composition (%)
sio2+tio2 al2o3+mno cao+mgo caf2 s p
30~40 25~30 20~30 5~13 ≤0.05 ≤0.05
(mechanical performance of the deposited metal):
wire
standard yield point
σs(mpa) tensile strength σb(mpa) elongation δ5(%) impact value
akv (j)
el8 f6a0-el8 ≥350 ≥420 ≥22 ≥40( 0c)
em12k f7a2-em12k ≥410 ≥500 ≥30 ≥60 (-20c)