In the steelmaking industry, the metallographic analysis often used is the analysis of intervening substances (inclusions).
The level of discrimination is defined as the five-level classification of intermediate objects.
If you have any needs for related analysis software, you can contact us to discuss customization.
Intervening object detection software (FOI)Using artificial intelligence methods to automatically identify Class A, Class B, Class C, Class D, and Class DS, it improves the accuracy of judging different intervening substances, and based on the principle of simple use and output, it reduces the burden on inspection personnel and improves product yields. It also enhances the company's industrial competitiveness and ensures quality and product delivery.
Definition of intermediary
The chemical components of steel intermediaries are mostly metal oxides, silicon dioxide compounds (silicate), or compounds of different phases that may be unevenly mixed together, or even metal sulfides mixed in, which are called Intermediate thing.
How to detect intervening objects
1.Microscopic observation method:
Under a microscope with a magnification of 100 times, use a square test grid with a side length of 71mm (the actual area is 0.50mm2)
Compare the observed image within the square with the standard rating chart
2. Intermediate object rating chart:
It is divided into 5 types of rating charts: Class A sulfide, Class B alumina, Class C silicate, Class D spherical oxide and Class DS single particle spherical oxide.
3. Rating boundaries and width of intervening objects
| Rating map level
i |
intervening object category | ||||
| A total length
um |
B total length
um |
C total length
um |
D quantity
um |
DS diameter
um |
|
| 0.5 | 37 | 17 | 18 | 1 | 13 |
| 1 | 127 | 77 | 76 | 4 | 19 |
| 1.5 | 261 | 184 | 176 | 9 | 27 |
| 2 | 436 | 343 | 320 | 16 | 38 |
| 2.5 | 649 | 555 | 510 | 25 | 53 |
| 3 | 898
(<1181) |
822
(<1147) |
746
(<1029) |
36
(<49) |
76
(<107) |
(rating limit)
(intermediate object width)
| category | fine lineage | Thick series | ||
| minimum width
um |
maximum width
um |
minimum width
um |
maximum width
um |
|
| A | 2 | 4 | >4 | 12 |
| B | 2 | 9 | >9 | 15 |
| C | 2 | 5 | >5 | 12 |
| D | 2 | 8 | >8 | 13 |
| Note: The maximum dimension of Class D inserts is defined as the diameter | ||||
