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Extra resources for American Welding Society - User's Guide to Filler Metals
To activealloyelements Some, but not all, neutral fluxes tend to reduce the chromium content of the weld metal as compared to that of the electrode. An electrode of somewhathigherchromium content than the intended weld metal may be necessary in such cases. 3 Active Fluxes. Active fluxes are those which contain small amounts of manganese, or silicon, or both. These deoxidizers are added to the flux to provide improved resistance to porosity and weld cracking caused by contaminants on, or in, the base metal.
Document provided by IHS Licensee=Aramco HQ/9980755100, User=, 10/24/2002 04:05:24 MDT Questions or comments about this message: please call the Document Policy Management Group at 1-800-451-1584. STD-AWS UGFM-ENGL L995 H 07842b5 05b44bb 872 H 23 pad. The samples are analyzed separately for silicon and manganese. (4) The Wall Neutrality Numberdepends on thechange in silicon, regardless of whether it increases or decreases, and on the change in manganese, regardless of whether it increases or decreases.
A composite electrode might be chosen for higher melting rate and lower depthof fusion at a given current level than wouldbe obtainedunder thesame conditions with a solid electrode. 8 Mechanical Propertiesof Submerged Arc Welds. The mechanical properties are determined from specimens prepared accordingto the procedure called for in the specification. That procedure minimizes dilution from the base metal and thereby more accurately reflects the properties of the weld metal from eachelectrode-flux combination.
American Welding Society - User's Guide to Filler Metals by American Welding Society