| GENERAL DESCRIPTION: |
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REFINEX range of products
are available in tablet form and are used for grain
refining of aluminium and its alloys. |
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PURPOSE: |
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Normally, aluminium and
its alloys solidify with coarse columnar and equated
crystals. Such a coarse grain structure poses problems
like poor feeding characteristics, cracking during metal
working and poor response to the surface treatment
processes. |
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SPECIFICATIONS: |
COLOUR
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REFINEX - 20 (All
Sizes)
REFINEX - 100 & 110 (All Sizes) |
White
Reddish |
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FORM |
TABLET |
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MOISTURE |
0.05% Max. |
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DENSITY |
1.70 - 1.90 GMS
/CC |
(+/- 2 GMS) |
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WEIGHT |
50 GMS & 100 GMS
250 GMS, 500 GMS & 1 KG |
(+/- 4 GMS) |
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| INSTRUCTIONS FOR USE: |
- Melt
under the cover of a suitable flux and bring
the metal temperature to 730oC -
750oC for aluminium and its
alloys. In case of hypereutectic Al-Si
alloys, bring it to the desired temprature
depending on the size of the casting.
- When the
metal temperature is falling, plunge the
recommended quantity (as per the application
guide) of REFINEX right upto the bottom of
the melt. Use a perforated and preheated
bell plunger coated with refractory coating
for plunging to prevent contamination of the
melt with iron. In case of Al-Si
hypereutectic alloy, degas the metal before
treating with REFINEX 100 or 110 to knock
off sodium in the metal.
- When the
reaction ceases, degas the metal with the
help of a suitable GASNOK product, dross off
and modify whenever required (in the case
hypereutectic and eutectic Al-Si alloys).
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Select the right grade of REFINEX
from the application guide given below
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| APPLICATION GUIDE: |
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REFINEX GRADE |
USED FOR |
APPLICATION RATE* |
REMARKS |
|
REFINEX 20 |
All aluminium
alloys except hypereutectic Al-Si alloys and
high conductivity aluminium |
0.1 - 0.2 % |
Grain refinement
from Titanium and Boron nucleation. REFINEX - 20
is a standard and more potent grain refiner |
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REFINEX 100 & 110 |
Hypereutectic
aluminium silicon alloys (13-25 % silicon) |
0.2 - 0.4 % |
Refining by
aluminium phosphide nuclei. REFINEX - 110 is
more suited for alloys containing more than 15%
silicon |
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* Approximate
application rate have been given in this
application guide. |
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| CUSTOMER BENEFITS: |
REFINEX range of
products:
-
Improves
mechanical properties.
-
Improves
feeding characteristics.
-
Ensures
freedom from cracking in rolled and forged
products.
-
Improves
surface finish and response to anodising.
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STANDARD PACKING: |
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REFINEX tablets are
available in 50 gms, 100
gms, 250 gms, 500 gms &
1 kg sizes wrapped in
poly lined aluminium
foils packed in
cardboard boxes.
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SAFETY
PRECAUTIONS: |
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Store REFINEX
products in a cool
and dry place. Keep
them properly
covered.
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Avoid inhalation of
dust.
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Use of protective
gloves and nose
napkins recommended.
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