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SANDADDITIVES
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PETROLEUM
COAL TAR PITCH SAND ADDITIVES
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AFCICOAL
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AFCICOAL
is the range of Petroleum based Coal Tar Pitch Sand Additives an excellent
substitute for conventional coal dust, specially developed to overcome
the following shortcomings of conventional coal dust : -
- Serious problems
like contamination with iron pyrites, slate, and other minerals, which
are injurious to casting finish and quality, are eliminated, by using
AFCICOAL.
- It's Ash Content
is maintained at minimum level to avoid reduction in permeability,
and refractoriness of sand as faced in conventional coal dust.
- Inconsistency
in volatile matter content of conventional coal dust is eliminated.
- AFCICOAL disperses
throughout the sand grains with minimum mixing effort.
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| PHYSICAL
STATE |
- AFCICOAL
is available in POWDER and LIQUID form.
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| CODE |
PRODUCT |
SPECIFICATIONS |
CHARACTERISTICS |
| B031 |
AFCICOAL
31 |
V M : 50-55 %
F C : 40-45 %
L O I : 96 % min Ash
: 4 % max |
HIGH
PRESSURE MOULDING
AVAILABLE IN POWDER FORM |
| B032 |
AFCICOAL
32 |
V M : 55-60 %
F C : 35-40 %
L O I : 95 % min
Ash : 5 % max |
CARBONACEOUS
LOW ASH ADDITIVE FOR FERROUS CASTINGS.
AVAILABLE IN POWDER FORM |
| B033 |
AFCICOAL
33 |
V M : 60-65 %
F C : 30-35 %
L O I : 96 % min
Ash : 4 % max |
MEDIUM
PRESSURE MOULDING AVAILABLE IN POWDER FORM |
| B034 |
AFCICOAL
34 |
V M : 70-75 %
F C : 20-25 %
L O I : 96 % min
Ash : 4 % max |
LOW
PRESSURE MOULDING
AVAILABLE IN POWDER FORM |
| B035 |
AFCICOAL
35L |
V
M : 75-80 %
F C : 15-20 %
L O I : 98 % min
Ash : 2 % max |
CONVENTIONALTYPE
MOULDING AVAILABLE IN LIQUID FORM |
| B036 |
AFCICOAL
36 |
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| B037 |
AFCICOAL
37 |
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| B038 |
AFCICOAL
38 |
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| B039 |
AFCICOAL
39 |
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| B040 |
AFCICOAL
40 |
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| RECOMMENDED
APPLICATION PROCEDURE |
- Add AFCICOAL
@ 1.2 % in initial stages where 100 % new sand is used in the mould
& generally for 10 % new sand additions, 0.1-0.5 % by weight of AFCICOAL.
However actual percentage additions will vary from foundry to foundry.
- To ensure good
results, dry mulling for one minute with AFCICOAL .
- This percentage
will go on reducing with use of reclaimed sand. Proper monitoring
& sand control will considerably reduce further addition rates, however
this reduction further depends upon.
- Individual foundry
practice Efficiency of sand mixture.
- Sand to metal
ratio.
- Sandmix temperature
& moisture requirements.
- Quality of new
sand used.
- The nature of
clays.
Volatile Matter
& Fixed Carbon is adjusted to suit the different mould pressure that gives
consistent strength & compactness. |
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| SPECIAL
FEATURES OF AFCICOAL SAND ADDITIVES |
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- AFCICOAL is
easy to mix & not susceptible to sand & temperature variations.
- It possesses
superior Compression strength.
- It has good
refractoriness & is highly economical due to low additions.
- It overcomes
the problems like mould dialition, scabs, red tails, buckles, pinholes
& blowholes etc.
- It does not
fume or smell while pouring is carried out, hence non-hazardous.
- It has considerably
very low moisture content & hence reducing the risk of gas defects.
- It gives moulds
castings excellent surface finish & hence they are dimensionally accurate.
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| STANDARD
PACKING |
- AFCICOAL 31/
32/ 33/ 34 is available in 50 KGS BAGS.
- AFCICOAL 35L
is available in 200 LTRS. BARREL 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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