US 12,496,632 B2
Manufacture of hollow core high pressure vacuum die cast components
John Richard Potocki, Armada, MI (US)
Assigned to MAGNA INTERNATIONAL INC., Aurora (CA)
Appl. No. 18/704,155
Filed by MAGNA INTERNATIONAL INC., Aurora (CA)
PCT Filed Oct. 25, 2022, PCT No. PCT/US2022/047768
§ 371(c)(1), (2) Date Apr. 24, 2024,
PCT Pub. No. WO2023/076304, PCT Pub. Date May 4, 2023.
Claims priority of provisional application 63/271,355, filed on Oct. 25, 2021.
Prior Publication US 2024/0408669 A1, Dec. 12, 2024
Int. Cl. B22D 17/14 (2006.01); B22C 9/10 (2006.01); B22D 29/00 (2006.01)
CPC B22D 17/14 (2013.01) [B22C 9/10 (2013.01); B22D 29/005 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of manufacturing a component, comprising the steps of:
placing a glass core in a die cavity of a high pressure vacuum die casting apparatus;
injecting metal into the die cavity around the glass core;
casting the metal in the die cavity under a pressure of 1 Bar to 500 Bar and under a vacuum to form a cast component, the cast component having a wall thickness ranging from 1 mm to 5 mm,
wherein, prior to the casting step, the method includes reducing potential for breakage of the glass core during the casting step by at least one of: preheating the glass core prior to the casting step; forming the glass core from fused silica glass or borosilicate glass; and forming the glass core such that the glass core is a wall having a consistent glass thickness surrounding an opening,
shattering and removing the glass core from the component after the casting step, and
reusing and/or recycling the glass core after the step of removing the glass core from the component.