Titanium ferrosilicide is a new material developed by NTPF Etalon Ltd engineers. It is produced by self-propagating high-temperature synthesis (SHS) technology. Titanium ferrosilicide is used as master alloy for high-quality steels instead of ferrotitanium. The analogue of this material is ferrosilicotitanium, but titanium content is higher (as 70 % ferrotitanium FeTi70 GOST 4761), and impurities content is significantly lower (oxygen, nitrogen, hydrogen as well as nonferrous metals) (table).
Titanium ferrosilicide is produced in special SHS-reactors under inert atmosphere and high temperature (about 2100 oC). End product has 3,5-4,5 g/cm3 density and composite structure based on titanium silicides and intermetallics. This allows to increase titanium assimilation by steel in 1,5-2,5 times compared with ferrotitanium.
Chemical composition of titanium ferrosilicide
| Grade | Ti | Al | Si | Cu | V | Mo | Sn | Cr | H | N | O | C | S | P |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| max | ||||||||||||||
| FST 70 | 65-75 | 9-14 | 14-22 | 0,01 | 0,1 | 0,01 | 0,01 | 0,05 | 0,01 | 0,1 | 0,2 | 0,2 | 0,01 | 0,02 |
Material is supplied in lump form with following fractions: 5-20 mm, 20-80 mm, 50-200 mm and others. It is possible to produce cored wire filled with titanium ferrosilicide with following characteristics:
| Diameter, mm | The fill factor, % | The location axis of the bay | The shell material |
|---|---|---|---|
| 12-15 | 66,7 | Vertical | 08Al steel |
Other alloying materials: