Alloys and Inoculants
Barium Inoculant
FeSi-based Ca-Ba inoculant that resists fading.
Barium inoculant is a ferrosilicon-based inoculant containing calcium and barium. Added to molten cast iron shortly before pouring, it increases graphite nucleation sites, reduces chill (white iron) tendency and improves graphite distribution.
Barium inoculants are widely used in grey and ductile iron and resist fading of the inoculation effect better. They are therefore preferred on lines with long ladle holding times or large ladles. In ductile iron they increase nodule count and help suppress carbide formation.
The addition is made as close to pouring as practical: in the ladle, in the stream or in the mould. Grain size should match the addition method, and dust loss and sticking to the ladle wall with fine grain should be considered. An analysis certificate per lot can be requested.
Typical chemical analysis (%)
| Silicon (Si) | 65-73 |
|---|---|
| Barium (Ba) | 2,0-5,7 |
| Aluminium (Al) | 0,8-1,5 |
| Calcium (Ca) | 0,8-3,2 |
Typical ranges. Exact values are given in the analysis certificate of each lot.
Product details
- Type
- Ca-Ba bearing FeSi-based inoculant
- Grain size
- Different grain distributions on request
- Packing
- 25 kg bag, 1 tonne big bag; kept dry
- Addition method
- Ladle, stream or in-mould
Applications
- Chill control and graphite distribution in grey iron
- Nodule count increase and carbide suppression in ductile iron
- Fading resistance on long-holding ladle lines