US 12,420,334 B2
Ultrasound assisted vertical shot chamber for die casting applications
Qingyou Han, Stow, OH (US)
Filed by Qingyou Han, Stow, OH (US)
Filed on Jun. 27, 2024, as Appl. No. 18/757,435.
Application 18/757,435 is a division of application No. 16/992,270, filed on Aug. 13, 2020, granted, now 12,048,962.
Prior Publication US 2024/0351097 A1, Oct. 24, 2024
Int. Cl. B22D 17/00 (2006.01); B22D 17/20 (2006.01); B22D 17/22 (2006.01); B22D 27/08 (2006.01)
CPC B22D 27/08 (2013.01) [B22D 17/007 (2013.01); B22D 17/2015 (2013.01); B22D 17/2084 (2013.01); B22D 17/2272 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for producing a semi-solid material directly from its liquid material in a shot chamber in a vertical cold chamber die casting machine for making castings, comprising the steps of:
embedding at least one sonotrode in a plunger with one tip of each sonotrode in direct contact with the liquid material to be introduced in the shot chamber;
preparing the liquid material and pouring the liquid material into the shot chamber at a temperature slightly higher than its liquidus temperature;
transmitting high-intensity ultrasonic vibration through said at least one sonotrode to the liquid material immediately as the liquid material is introduced into the shot chamber wherein the tip of each sonotrode is vibrating with an intensity of ultrasonic vibration capable of creating cavitation in the liquid material nearby; and
forcing slurry formed from the liquid material to fill die cavity using the plunger while high-intensity ultrasonic vibration is applied to the slurry in the shot chamber, wherein the tip of said at least one sonotrode is smaller than a tip of the plunger.