The production process of low alloy steel cored wire with The production process of low alloy steel cored wire with potassium cryolite

At present domestic engineering machinery steel strength level enhances unceasingly, Q690Q800 such as widening the application range of the high strength level of the steel plate, but the Gao Jiangban matching with welding material market supply is less, and the current market supply of form a complete set of welding materials exist poor mechanical properties of welded joint, the weld metal of low elongation, impact toughness at low temperature is low, especially in ship and ocean engineering in heavy plate (1025 mm), high strength steel welding technology of low alloy high performance flux cored wire.
 
The welding wire of this process includes: 3050% of rutile;
 
Calcium oxide or magnesia or two mixtures 58%;
Potassium feldspar 26%;
 
A mixture of sodium fluoride, sodium cryolite, and potassium cryolite.
 
Zirconium sand 26%;
 
The combined gold powder containing chromium is reduced to Cr: 02%;
 
The alloy-bearing powder containing manganese is converted into mn1520%.
 
The alloy-bearing powder containing molybdenum is converted into Mo: 02%;
 
The alloy-bearing powder containing vanadium is equivalent to V: 03%;
 
Nb:03% of niobium alloy powder;
 
Boron and gold powder reduced to B: 0;
 
Rare earth alloy 05%;
 
Titanium iron 26%;
 
Nickel powder, 24%;
 

The remainder is iron powder.