METHOD AND DEVICE FOR CONTROLLING FLOW OF LIQUID ZINC IN ZINC POT FOR HOT-DIP GALVANIZATION
FIG3 is a schematic plan view showing the method for controlling the flow of liquid zinc in a zinc pot for hot-dip galvanization of the present invention (Example 2)
As shown in FIG3, the transversely disposed traveling wave magnetic field generators located at the front end of the zinc pot (zone III) and the area between the strip steel and the furnace snout (zone IV) are full-length traveling wave magnetic field generators, i.e., a front traveling wave magnetic field generator 756 and a back traveling wave magnetic field generator 712. Moreover, the traveling wave magnetic fields excited by the full-length traveling wave magnetic field generators are in the same direction to drive the liquid zinc to flow to one side of the zinc pot, and make it be engaged with the flow of liquid zinc caused by the traveling wave magnetic field generators located on the side of the zinc pot, diverting the liquid zinc driven by the transverse traveling wave magnetic field generators to the rear end (zone V) of the zinc pot.
schematic plan view
4
furnace snout
3
strip steel
2
liquid zinc
['1. A method for controlling flow of liquid zinc in a zinc pot for hot-dip galvanization, wherein under blowing effects of an air knife above the zinc pot for hot-dip galvanization onto strip steel, the liquid zinc diffuses and flows outwards to zones comprising the left side, the right side, the front end of the zinc pot, respectively, and a zone between the strip steel and a furnace snout, and surface dross rapidly generated on the surface of the liquid zinc is driven to flow outwards to the zones; and wherein on edge sides of the zones, traveling wave magnetic field generators are arranged in multiple sections above the surface of the liquid zinc in the zinc pot, so as to excite a traveling wave magnetic field to generate an electromagnetic driving force on the liquid zinc, driving the liquid zinc to flow; flowing of the liquid zinc caused by the traveling wave magnetic field generators is engaged with blow-flowing of the air knife, driving the liquid zinc on the surface of the zinc pot to flow in order towards the rear end of the zinc pot; the surface dross floating on the surface of the liquid zinc is driven by the flowing liquid zinc to flow in a controlled direction.']