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Rare-Earth Silicide Alloy
| GB/T
4137-93 |
Chemical Content % |
| RE |
SI |
Ca |
Ba |
Ti |
Fe |
| Max |
| SiRE29-A |
27.0-30.0 |
52.0-57.0 |
2.0 |
2.0 |
0.5 |
rest |
| SiRE29-B |
27.0-30.0 |
52.0-57.0 |
4.0 |
2.0 |
0.5 |
rest |
| SiRE29-C |
27.0-30.0 |
52.0-57.0 |
2.0 |
4.0 |
0.5 |
rest |
| SiRE32-A |
30.0-33.0 |
50.0-55.0 |
2.0 |
2.0 |
0.5 |
rest |
| SiRE32-B |
30.0-33.0 |
50.0-55.0 |
4.0 |
2.0 |
0.5 |
rest |
| SiRE32-C |
30.0-33.0 |
50.0-55.0 |
2.0 |
4.0 |
0.5 |
rest |
| SiRE32-D |
30.0-33.0 |
50.0-55.0 |
1.5 |
1.0 |
0.5 |
rest |
| SiRE35-A |
33.0-36.0 |
48.0-53.0 |
2.0 |
2.0 |
0.5 |
rest |
| SiRE35-B |
33.0-36.0 |
48.0-53.0 |
1.5 |
1.5 |
0.5 |
rest |
| SiRE33 |
36.0-39.0 |
46.0-51.0 |
2.0 |
2.0 |
0.5 |
rest |
| SiRE41 |
39.0-42.0 |
44.0-49.0 |
2.0 |
2.0 |
0.5 |
rest |
| SiRE44 |
42.0-45.0 |
42.0-47.0 |
2.0 |
2.0 |
0.5 |
rest |
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| CHARACTERISTICS: |
(1)Melting temperature range:1,200-1,4000C
(2)Density:3.4-3.5g/cm3(RE content:30%)
(3)Chemical activity: Strong activity and efflorescence in the air
(4)Low Impurity content
(5)Alloy phase composition: Ce(La)Si2Si and FeSi
(6)Delived in block or particle in package, weight of max, block not to be more than 3,000g.
(7)Without obvious non-metal impurities on the surface or in the side of the alloy(But the coating for ignot mould, attached on the surface, is permitted if it can not be brushed off)
(8)Silver grey appearance and without obvious efflorescent phenomenon.
The chemical composition can be changed according to the users' demands. |
| USES: |
The rare-earth silicide alloys are widely used as the for cast iron and steel, the additive composition of nodularizer ductile iron, the inoculant for grey cast-iron, and the alloying agent, deoxidant and desulphurizer, for steel, that have considerable effect on the improvement of the comprehensive mechanical properties of steels or irons.
The rare-earth silicide alloys can purify molten steel, refine the mer, improve the shape and distribution of impurity, enhance machining performance and overcome hot brittleness when 0.05-0.2% the rare-earth silicide alloys is added into the molten steel in general.
The rare-earth silicide alloys are usually used as the master alloy of nodularizer, vermicularizing agent and inoculant.
As the rule, the modification purpose can be achieved when the added amount of nodularizer in molten cast-iron is 0.8-1.5%,the added amount of vemicularzing agent 0.6-1.0% and the added amount of the inoculant 0.05-0.2%.
At present,70,000,000 to 90,000,000 tons cast-iron need to be modified in the world. Therefore, the rare-earth silicide alloys will be used in steel-works, casting factories, and nodularizer and modified alloys manufacturers. |
| PACKING: |
Packed in woven bag, gunny-bag of iron barrel,50kg net per package or packed according to the users' demands. |
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