| 摘要 |
<p>A welding flux and welding electrode containing a copper-nickel core and covered with a coating of the flux are described which result in very low porosity when used in the overhead welding position as well as all other welding positions. The weld flux comprises about 5 to about 35% calcium carbonate, about 1 to about 5% Ruflux P, about 20 to about 40% cryolite, about 10 to about 30% titanium dioxide, about 1 to about 5% aluminum powder, about 2 to about 8% manganese powder, about 5 to about 12% nepheline syenite, about 2 to about 8% calcium fluoride, up to about 8% lithium carbonate and about 2 to about 7% bentonite.</p> |
