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CORE
& MOULD BINDERS :
FACING SAND ADDITIVE
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AFCIMIX
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| AFCIMIX
21/22 is a range of special formulated complete additive for facing
sands for Ferrous and Non-Ferrous castings. Replaces all other additives
such as Bentonite, Dextrine, Cereals etc. It imparts excellent green compression
strength and air drying properties. |
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| PHYSICAL
STATE |
- AFCIMIX is
available in POWDER form.
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| CODE |
PRODUCT |
ADDITION |
SPECIFICATIONS |
CHARACTERISTICS |
| B021 |
AFCIMIX
21 |
1.0-2.0
% |
GREEN
COMPRESSION STRENGTH : 5 TO 7 PSI CORE SRATCH HARDNESS : 50-55 |
HIGH
STRENGTH |
| B022 |
AFCIMIX
22 |
1.5-2.0
% |
GREEN
COMPRESSION STRENGTH : 3 TO 7 PSI CORE SRATCH HARDNESS : 40-45 |
MEDIUM
STRENGTH |
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| RECOMMENDED
APPLICATION PROCEDURE |
- Add AFCIMIX
at early stages dry mixing with other sand additives.
- Add the appropriate
quantity of water and mix well.
- For best results
dry mulling is recommended before water additions.
- Recommended
addition percent % of AFCIMIX is 5.0% by weight with 3 % of water
for 100 % new sand depending upon the Mesh of sand used. If total
finer new sand is used the addition of water may go upto 3.5 % water.
- For every 25
% reclaimed sand, addition percent % of AFCIMIX reduces by 1% and
increase addition of water by 0.25 %. for good results.
- Please note
that AFCIMIX mixed sand is normally used as a facing/unit sand, hence
facing sand thickness of 25-75 mm is to be kept depending upon casting
section.
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| FUNCTIONS
& ADVANTAGES |
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| Consistent
Advantages: |
- Non-toxic,
non-irritant sand additive.
- One shot addition
reduces variables & inconsistency.
- It produces
all desirable sand properties like Green compression strength and
air drying properties.
- Promotes improved
thermal stability of moulds resulting in non-friable moulds, better
casting definition and dimensional accuracy.
- It imparts excellent
flowability.
- Shake out problems
are eliminated.
- Air hardening
binder, hence reduces drying/ baking cost.
Due to its excellent
Air drying properties, the rammed mould will begin to harden immediately
on exposure to air, and becomes harder than Green sand mould. It is also
observed that the mould will harden to a depth of about 35 mm, overnight
and continue to develop further hardness and depth of hardness as time
progresses.
For Superior Strength & Optimum Casting surface finish use our Petroleum
based Coal tar pitch Sand Additive-AFCICOAL range that overcomes the problems
like shortcomings of conventional coal dust, mould dialition, poor surface
finish, high additions, rat-tails, scabs, buckles etc.
For excellent Casting surface finish use our Water based-AFCICOAT and
Solvent based-AFCIMOL range of refractory coatings. |
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| PRECAUTIONS |
- Soon after use
Close the bag tightly to avoid external contamination.
- AFCIMIX is likely
to deteriorate under damp condition, hence always keep in dry place.
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| STANDARD
PACKING |
- Available in
50 KGS. BAGS.
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| Please
note that the above information & specifications are given in good faith
& are Subject to change without prior notification |
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