Ahmed Abrahams

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Ahmed Abrahams
W.C.I.F. PRACTICAL PRESENTATION AUGUST 10. 08.2007
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W.C.I.F. Presentation

• Courses completed
• Metallurgy
• Modern Supervision
• Fettling and Fettling Teqniques
• Mould and Moulding Sand
• Quality Control
• Planning and Productivity
• Core and Coremaking

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1,6 CBS5 Core Sand Mix
Contents Silica Sand 35kg Chromite Sand
15kg Red Oxide 0.25kg Resin Part 1
0.4kg Resin Part 2 0.4kg Amine acts as a
catalyst
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Tools to produce cores
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• Core making procedure

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Ramming of the sand
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Core venting
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Gassing of the Core using Amine
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Stripping of the Core from the Core Box
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Ramming of the sand
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The Core
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1.6 CBS14 Core sand Mix
Contents Silica Sand 100kg SLC
3kg Coaldust 1kg Resin part 1
0.8kg Resin part 2 0.8kg Amine acting as
a catalyst
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Moulding ProcessCope Pattern
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Drag pattern
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Filling the Cope pattern with sand
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Ramming sand
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Compacting The Sand
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Levelling the Cope Pattern
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Venting of sand
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Gassing the sand with Amine
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Runner system
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Cope and Drag Mould completed
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Physical Properties
Charge Charge mix 2 tons returns 2
tons blocks 2 tons steel 2 tons snippers 1 ton
pig iron 1 ton coils
Metal specifications Chemical
Analysis Carbon 3.35 3.40 Silicon 2.10
2.25 Chrome 0.15 0.18 Copper 0.55
0.65 Sulphur 0.85 0.90 Phosphorous
0.50 max Manganese 0.60 0.68 Titanium
0.012 max
Physical Properties Brinell Hardness
No 190-230 Tensile Strength
185-220N/cm²
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Pig Iron used for weights
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Casting Process
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Metal being poured into the mould
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Stripping of the mould
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Cooling Process
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The Final Product
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Quality
The quality of the product depends on the
customer demands. Common problems Pinholes Bl
ows Casting damage Metal penetration
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END