How to Start Using Classroom Assessment Techniques in Your Classroom by @n8ngrimm | Ecology of Education http://bit.ly/aArU3h Great post! How to Use Classroom Assessment Techniques in Your Classroom http://bit.ly/cekUHZ ~> Formative assessment moves student learning forward.
Flux-cored arc welding. Flux-cored arc welding (FCAW or FCA) is a semi-automatic or automatic arc welding process. FCAW requires a continuously-fed consumable tubular electrode containing a flux and a constant-voltage or, less commonly, a constant-current welding power supply.
Hot rodding, used to braze-weld, plunges a hot brazing rod into powder flux. Heat from the rod causes a small amount of flux to adhere to the rod surface. This method is best suited to brazing of shallow joints, up to 1/4 inch in steel, as it results in poor capillary penetration in deep joint areas.ase-material type determines flux selection more than any other factor. To braze aluminum alloys, coat parts with aluminum brazing fluxes. Too, aluminum-bronze and magnesium fluxes braze only with their respective base metals.