Hanging chart of low magnification microstructure defect rating standards for structural steel

Hanging chart of low magnification microstructure defect rating standards for structural steel

The entire set adopts original metallographic photos, with innovative design and exquisite printing

The entire set consists of 18 sheets.

The layout (510mmx360mm) is made of copperplate paper and printed in color.

Rating Chart 1: Ingot segregation classification with a diameter or side length less than 40mm, divided into four levels with a total of four images

Rating Chart 2: 20 images with a diameter or side length of 40-150mm, divided into four levels: general looseness, center looseness, ingot segregation, general spot segregation, and edge spot segregation

Rating chart three: generally loose with a diameter or side length greater than 150-250mm, central loose, ingot segregation, general spot segregation, and edge spot segregation, each divided into four levels, a total of 20 pictures

The rating chart consists of 12 images, with a diameter or side length greater than 250mm generally classified as loose, central loose, and ingot segregation, each divided into four levels

Rating Chart 5: Representative Type Picture of White Bright Strip Column for Continuous Casting Round and Square Steel Materials, with a Center Segregation Division of Four Levels, totaling 5 pictures

Rating Chart 6: Steel of all specifications and sizesSubcutaneous bubbles, internal bubbles, non-metallic inclusions (visible to the naked eye), slag inclusions, and non-metallic inclusions are each shown in one typical image. Three representative images are shown in the flip over column. Residual shrinkage cavities, white spots, and intergranular cracks at the axis are each classified into three levels, for a total of 16 images