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| NCTS
/ TTTI Color Poster |
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NCTS/TTTI/1 |
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Introduction
To Casting Deffcts |
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This
is a curtain raiser for the series. Dr.
P.K. Basutkar and
Mr. D.V. Paranjpe are
in conversation on the following:
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System
approach to control defects, |
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Documentation
and display of the process, |
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Process
parameters, |
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Five
case studies and outcomes, |
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Suggested
reading material for reference, |
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Introduction
to the series, and |
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Contribution
by NCTS Pune of the Institute of Indian Foundrymen
Calcutta and TTTI Bhopal.
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NCTS/TTTI/2 |
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Blow
Holes |
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Expert:
Mrs.
S.S. Kharkhanis
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Blow
hole is the common defect. At times this defect is confused
with other defects which appear similar to Blow Holes.
This leads to faulty diagnosis. The
programme illustrates this
defect and instructs to distinguish Blow Holes from
other defects
such as a sand holes, slagholes, and shrink holes.
Other contents are
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Locating
blow holes, |
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Characteristic
features of blow holes, |
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Genesis
of the defect, and |
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Remedial
measures. |
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NCTS/TTTI/3 |
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Shrinkage |
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Expert:
Prof.
S.K. Paknikar
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The
programme deals with the following:
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Characteristic
features of appearance of the defect. |
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Classification
into open, internal and corner shrinkages. |
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Genesis
of the defect. |
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Causes
leading to shrinkages and |
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Remedial
measures. |
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NCTS/TTTI/4 |
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Inclusions |
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Expert:
Mr.
P.S. Godbole
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Inclusions
in foundries form a significant part of total rejections
and are
required to be attended seriously.
The
programme encompases
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Identification
of inclusions. |
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Classification
into sand, dirt, slag and slag like matter. |
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Causes
viz. Design, Patterns, Pattern equipment, moulding
boxes, gating and running, moulding sand, core practice,
moulding practice, Metal composition, Melting practice,
Pouring Practice etc. |
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Remedies. |
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NCTS/TTTI/5 |
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Scab |
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Expert:
Mr. A.K. Abhyankar
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The
programme deals with the following:
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Appearance
of defect. |
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Clasification
into expansion scab and erosion scab. |
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Causes
leading to scabs. |
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Remedial
measures. |
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NCTS/TTTI/6 |
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Discontinuties |
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Expert:
Mr. S.A. Joshi
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Discontinuity
appears due to lack of fusion of metal in castings.
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The
defect may be Cold lap, Cold shut, Misrun, inadequate
fusion of chapters etc. |
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Causes
of the defect and |
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In
foundry practice we can not take remedial steps in
isolation. This point is dealt with through live action,
graphics
and voice over narration. |
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NCTS/TTTI/7 |
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Pinhole
Porosity |
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Expert:
Mr.
R.D. Chavan
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The
objectives are:
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To
identify the defect |
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To
state different causes |
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To
list preventive measures |
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To
describe corrective methods |
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This
programme has animation to support the theory on displacement
of gas. |
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Outline |
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Behaviour
of Aluminium Melt |
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Identification
of Pinhole Porosity |
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Causes
of the defect |
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Preventive
and corrective measures |
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Copyright
© 2001-2002 National Centre For Technical Services -
The Institute Of Indian Foundrymen
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All Rights
Reserved.
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