Methods and system for manufacturing lead battery plates
AssigneeH. Folke Sandelin AB
InventorsRussell Derek, Anders Persson
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Abstract
Disclosed are methods and a system for manufacturing a lead or lead alloy plate lattice for a lead-acid battery, comprising continuous extrusion of a melt of lead or lead alloy under temperatures lower by 10-100° C. than the melting point of lead, or the lead alloy, the extrudate being subsequently subjected to a flattening process under a temperature lower by more than at least 230° C. than the melting point of lead or the lead alloy, with a total draft rate less than 10%, and thereafter the extrudate may be processed so as to manufacture a plate lattice.
Claims12
A method of manufacturing a lead, or lead alloy, plate lattice for a lead-acid battery, comprising the steps of:
- continuously extruding the lead, or lead alloy, under temperatures lower by 10 to 100° C. than the melting point of the lead, or the lead alloy,
- flattening of an extrudate thus formed under a temperature lower by more than at least 267° C. than the melting point of the lead or the lead alloy;
- wherein said step of flattening of said extrudate provides a total draft rate less than 10%, and
- processing the extrudate so as to manufacture the plate lattice wherein an anode lead or lead alloy plate is manufactured, wherein cooling of the extrudate is controlled to provide a grain size of said plate of 50-300 μm.
Dependencies are inferred from the claim text.