Method for filling a mold

US6779588B1 · kind B1 · utility

Assignee

• Hayes Lemmerz International, Inc. · US

Inventors

• Dave Good · Grinnell, US
• Robert L. Macheske · Tawas City, US
• Kenneth D. McKibben · Defiance, US
• Daniel D. Minor · Cadillac, US
• Tom Rozich · Au Gres, US
• Mark Salgat · Pinconning, US
• Brandon Schnettler · Au Gres, US

Key dates

• Filing date: Oct 29, 2001
• Grant date: Aug 24, 2004
• Expiry date: Oct 29, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D18/08
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A mold of a casting machine is filled to make a cast article. The method includes providing a molten metal to a casting chamber in fluid communication with the mold, the casting chamber having a supply conduit for introducing a gas into the casting chamber, and the casting chamber having an evacuation conduit for delivering the molten metal from the casting chamber to the mold. The method also includes controlling the filling of the mold during a first time interval by delivering the molten metal from the casting chamber to the mold at a first rate. The method further includes controlling the filling of the mold during a second time interval by delivering the molten metal from the casting chamber to the mold at a second rate. The filling of the mold decelerates from the first rate to the second rate and the second rate does not exceed the first rate.