18th Edition of the Journal of Innovation Rapid Advancements in Digital Transformation | Page 80

Digital Transformation in Steel Inspection

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METALLURGICAL INSPECTION BACKGROUND

2.1 STEEL INDUSTRY METALLURGICAL INSPECTION PROCESS

In the Quality Assurance ( QA ) department of a steel manufacturer , samples of the outgoing steel are extracted , and metallography is applied to assure product quality by QA inspectors using a microscope . The inspectors perform the measurement for its grade judgment based on steel industry standards and company quality requirements ^{3 4} .

Figure 2-1 Metallurgical inspection process for grading steel samples

The non-metallic inclusion measurement system automatically measures non-metallic inclusions in steel samples by using an auto-focus optical microscope , X-Y stage , color area sensor camera , and an image processor . The sample holder with the test piece set is moved to a predetermined position on the X-Y stage , and image input is performed .

3

ASTM : E-45 , Standard Test Methods for Determining the Inclusion Content of Steel . [ Online ] 2018 . https :// www . astm . org / Standards / E45 . htm .

4

JIS . JIS G-0555 , Microscopic testing method for the non-metallic inclusions in steel . [ Online ] 2020 . https :// webdesk . jsa . or . jp / books / W11M0090 / index /? bunsyo _ id = JIS + G + 0555 % 3A2020 .

IIC Journal of Innovation 73