초록 ▼

A method for fabricating bushings for lead-acid cells or batteries is provided which is amenable to automation and control and provides relatively porosity-free bushings comprising utilizing a mold having a cavity in the configuration of the bushing desired and a lead fill unit comprising a lead pot

A method for fabricating bushings for lead-acid cells or batteries is provided which is amenable to automation and control and provides relatively porosity-free bushings comprising utilizing a mold having a cavity in the configuration of the bushing desired and a lead fill unit comprising a lead pot with the molten lead alloy for the bushing and a heated fill line and/or heated fill block wherein the mold and lead fill units are moved into alignment, heating such as induction heating to cause the solidified molten alloy at the end of the heated fill line or in the heated fill block orifice to become molten, gravity filling the mold and then moving the mold and lead fill unit out of alignment, the bushing preferably being cast in an upside-down orientation so as to minimize gas entrainment and/or particulate contamination.

대표청구항 ▼

[ We claim:] [1.] A method for fabricating a bushing for a lead acid cell or battery having a configuration with a bottom area and a top area for fusing to provide an electrical connection which comprises providing a mold having a cavity with the desired bushing configuration and a bottom end having

[ We claim:] [1.] A method for fabricating a bushing for a lead acid cell or battery having a configuration with a bottom area and a top area for fusing to provide an electrical connection which comprises providing a mold having a cavity with the desired bushing configuration and a bottom end having an orifice for filling the mold cavity, the mold cavity being such that said top area of the brushing being fabricated is located adjacent said orifice, gravity filling the mold cavity through the orifice with a molten lead alloy rising upwardly from the top area to the bottom are of the bushing, being fabricated while causing any air, gas, and/or particulate contamination to rise as the mold cavity fills, allowing the molten lead alloy to solidify after the mold cavity has been filled, and removing the bushing from the mold.