US 12,442,086 B2
Process control system and operating method therefor
Kyong-Su Park, Pohang-si (KR); Jung-Hyeung Lee, Pohang-si (KR); Chon-Kue Kim, Seoul (KR); Hyoung-Kuk Park, Pohang-si (KR); and Deuk-Jung Kim, Pohang-si (KR)
Assigned to POSCO, Pohang-si (KR)
Appl. No. 17/799,839
Filed by POSCO, Pohang-si (KR)
PCT Filed Feb. 18, 2021, PCT No. PCT/KR2021/002056
§ 371(c)(1), (2) Date Aug. 15, 2022,
PCT Pub. No. WO2021/167362, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 10-2020-0019923 (KR), filed on Feb. 18, 2020.
Prior Publication US 2023/0160071 A1, May 25, 2023
Int. Cl. C23F 1/08 (2006.01); C23G 3/02 (2006.01)
CPC C23F 1/08 (2013.01) [C23G 3/025 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A process control system comprising:
a storage device storing a calculation module generating thickness information about an internal defect layer included in a carbon steel product, based on at least one of a component, a cooling rate, a phase fraction, or a temperature of the carbon steel product;
a communication unit connected to a network; and
a processor transmitting at least one of the thickness information about the internal defect layer or control data for controlling an etching process removing at least a portion of the internal defect layer, to an external server controlling the etching process, through the communication unit;
wherein the calculation module comprises a first module calculating a phase fraction before winding the carbon steel product,
wherein the processor compares a phase fraction measured in the carbon steel product, and a phase fraction calculated by the first module from at least one of the temperature of the carbon steel product or the component of the carbon steel product, to train the first module.