However, the amount of suspended liquid metal could be reduced from the 60-80% range to 30% by proper fluxing
and dressing techniques.
Under the revisions, facilities can seek approval for alternative monitoring that fully demonstrates compliance for fluxing
and lime injection operations without regard to the technical or economic feasibility of the procedure specified in the rule.
During a four-year period, degassing and fluxing
trials and evaluations of molten metal cleanliness were conducted in green and nobake sand, low pressure, semi-permanent and permanent mold casting facilities.
In selecting a spray fluxing
system, one must consider the complexity of the circuit boards being processed in a lead-free environment.
with solid flux chemical compounds has its merits, but environmental and personal health concerns have greatly impacted flux usage and practice, and flux injection processes are now more commonly utilized.
* Detailed are the melt operations of two aluminum casting facilities, including charging, fluxing
is a critical parameter in the wave soldering process, and with the introduction of Pb-free soldering, flux can determine whether the process is sucessful.
* Powder and granular fluxing
techniques are presented, providing details on flux chemistry and composition.
First, Pb-free solder wetting is poorer, and non-wetting often occurs with no-flow fluxing
chemistry, particularly in the case of OSP finishes.
applications are not immune from problems during Pb-free solder processing.
This slag also contains fluxing
material and increases the danger of flux attack.