Patent ID: 11897030
Assignee: AIR PRODUCTS AND CHEMICALS, INC.
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  Y | IPC B

Claim 0:
1. A method comprising:
a. forming a metal part comprising a plurality of layers using a direct energy deposition additive manufacturing process, the plurality of layers comprising a top layer and a plurality of finished layers that collectively form left and right sidewalls;
b. providing a plurality of coolant nozzles in fluid flow communication with a cryogenic fluid, the plurality of coolant nozzles comprising a plurality of sidewall coolant nozzles that are capable of providing cooling to at least a portion of at least one of the left and right sidewalls;
c. measuring a plurality of sidewall temperatures, each of the plurality of sidewall temperatures corresponding to a different one of the plurality of layers; and
d. controlling a cooling intensity of each of the plurality of coolant nozzles in order to maintain a temperature gradient between each of the plurality of sidewall temperatures measured in step (c) below a first predetermined maximum temperature gradient and below a first predetermined maximum temperature, wherein the temperature gradient is the difference between the sidewall temperatures of two adjacent layers of the plurality of layers.