“Therminex” continuous casting powder & Granular are synthetic slags used to cover the liquid steel is continuous casting process.
MAJOR FUNCTION OF THE MOULD FLUX ARE INDICATED BELOW
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Protection of the molten metal from oxidation.
-
Thermal insulation of the metal surface to prevent particle solidification, particularly at the meniscus near the mould walls.
-
Absorption of the non-metallic metal and the mould by in filtration of a homogeneous slag film between the two surfaces.
-
Imposition of a uniform rate of heat transfer from metal through mould.
-
This provides the required solidification conditions
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ADVANTGES
- Therminex does not get entrapped in liquid steel and so chemistry of liquid metal remains same.
- Therminex spreads very fast and uniformly.
- Constant protection to liquid steel during entire casting operatio.
- Drop in temperature of liquid steel in the mould in controlled.
IMPORTANT
While ordering out therminex provide following information to enable us to offer correct grade of therminex.
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| THERMINEX GRADES |
| PRODUCT |
STEEL GRADES |
|
| Therminex ULC |
Ultra Low Carbon |
Stainless Steel |
| Therminex LC |
Low Carbon |
Stainless Steel |
| Therminex GP |
General Purpose |
M.S./S.S. |
| Therminex M.C. |
Medium Corbon |
Non Stainless Steel |
| Therminex H.C. |
High Corbon Steel |
Non Stainless Steel |
Chemical Composition and Physical Properties of Mould Fluxes Used for Continuous Casting of Steel.
| Mould Flux |
ULC1 |
ULC2 |
LC1 |
LC2 |
MC1 |
MC2 |
MC3 |
MC4 |
| Steel Grade Applied |
Ultra Low Carbon |
Low Carbon |
Medium Carbon |
| SiO2 |
(wt. %) |
30.1 |
39.7 |
30.5 |
35.0 |
34.0 |
31.8 |
33.4 |
33.1 |
| CaO |
(wt. %) |
35.0 |
32.4 |
32.6 |
33.8 |
43.7 |
44.8 |
40.8 |
43.2 |
| AI2O3 |
(wt. %) |
5.3 |
6.0 |
2.5 |
6.4 |
3.0 |
3.7 |
8.2 |
5.6 |
| Fe203 |
(wt. %) |
1.5 |
0.8 |
1.3 |
0.7 |
0.4 |
0.4 |
- |
- |
| Na2O |
(wt. %) |
3.6 |
9.7 |
13.0 |
11.2 |
6.6 |
7.3 |
9.1 |
9.4 |
| MgO |
(wt. %) |
6.8 |
2.4 |
1.5 |
2.3 |
5.1 |
1.9 |
- |
- |
| MnO |
(wt. %) |
2.3 |
0.1 |
6.0 |
0.1 |
- |
0.1 |
- |
- |
| TiO2 |
(wt. %) |
4.7 |
0.1 |
- |
0.1 |
- |
0.1 |
- |
- |
| K2O |
(Wf. %) |
- |
5.7 |
- |
0.5 |
- |
0.3 |
- |
- |
| B2O3 |
(wf. %) |
5.7 |
- |
- |
- |
- |
- |
- |
- |
| Li2O |
(wf. %) |
- |
5.5 |
3.1 |
4.6 |
- |
3.9 |
2.0 |
2.2 |
| F |
(wt. %) |
5.9 |
5.0 |
10.0 |
8.4 |
8.8 |
9.9 |
11.2 |
9.4 |
| CaO/SiO2 |
(ratfoj |
1.16 |
0.82 |
1.07 |
0.96 |
1.29 |
1.41 |
1.22 |
1.30 |
| Viscosity at 1573°K |
(Poise) |
0.15 |
0.20 |
0.04 |
0.09 |
0.18 |
0.05 |
0.11 |
0.11 |
| Softening Point |
(°K) |
1253 |
1228 |
1243 |
1203 |
1413 |
1303 |
- |
- |
| Solidifying Point |
(°K) |
1193 |
- |
1353 |
- |
1473 |
- |
1383 |
1398 |
| Crystalline Temp. |
(°K) |
- |
1253 |
- |
1303 |
- |
1428 |
- |
- |
APPLICATION RATE
- The production of steel requires 0.35 – 0.8 kgs./M.T. of Therminex.
- To protect in from moisture,
- Therminex is supplied in paper bags.
- Therminex is available in 10 kg. /pkt.
NO HAZARDOUS MATERIAL
