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Method of casting lead alloy automotive battery parts

  • US 4,085,792 A
  • Filed: 02/19/1976
  • Issued: 04/25/1978
  • Est. Priority Date: 10/02/1975
  • Status: Expired due to Term
First Claim
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1. A method of producing a storage battery grid of uniform thickness comprising the steps of:

  • (a) providing a grid mold having a mold substrate consisting essentially of aluminum and defining a grid mold cavity comprising a shallow lattice of thin grid strut mold voids having dimensions larger than those of the grid to be cast therein;

    (b) hard surface anodizing at least a portion of said mold substrate to produce an insulating molding surface thereon and to reduce the dimension of said grid mold cavity to the desired grid dimensions to be cast therein;

    (c) introducing molten lead alloy into said grid mold cavity against said insulating molding surface, said molding surface allowing said molten lead alloy to flow into and fill all of the interstices of said mold; and

    (d) allowing said lead alloy to cool to produce a dimensionally uniform storage battery grid comprising a lattice of thin lead struts.

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