David M Good

US Patent:

6581673, Jun 24, 2003

Filed:

Dec 29, 2000

Appl. No.:

09/753235

Inventors:

Kenneth D. McKibben - Defiance OH
Daniel D. Minor - Cadillac MI
Robert L. Macheske - Tawas City MI
David B. Good - Chelsea MI
Thomas J. Rozich - Au Gres MI
Mark Salgat - Pinconning MI
Brandon Schnettler - Au Gres MI

Assignee:

Hayes Lemmerz International, Inc. - Northville MI

International Classification:

B22D 4600

US Classification:

164457, 1641552, 1641555, 1641556, 164133

Abstract:

A method for producing a cast article comprising the steps of: (a)providing a casting apparatus having a mold, a casting chamber containing a molten metal under pressure and a fluid under pressure, the casting apparatus having a first supply port for supplying the molten metal to the casting chamber and a second supply port for supplying the fluid to the casting chamber; (b) supplying the molten metal to the first supply port; (c) supplying the fluid to the second supply port; (d) determining the amount of the molten metal in the casting chamber as a variable V ; (e) determining the amount of the fluid in the casting chamber as a variable V ; (f) determining the amount of humidity in the casting chamber as a variable V ; (g) determining the amount of the fluid entering the casting chamber as a variable V ; (h) determining the pressure of the fluid in the casting chamber as a variable V ; (i) determining the amount of the molten metal needed to produce a cast article in the mold as a variable V ; (j) determining the change in the pressure of the molten metal in the mold as a variable V ; (k) sensing the position of the molten metal with respect to the mold as a variable V ; (l) providing a control panel, wherein the control panel receives a signal representative of the variables V V ; and (m) adjusting the supply of one or both of the molten metal or the fluid in response to at least one of the signal representative of the variables V V.