lecture 1 metal casting introduction

8/9/2019 Lecture 1 Metal Casting Introduction

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'utline of the (resentation

• Concept

• Ste(s in)ol)ed in metal casting• C !"!cte"#$t#c$ %&'e !n( )'e*• C+!$$# c!t#on o- t e p"oce$$

• Met!+$ p"oce$$e( /"e!0 1p• *orld trend and India+s (osition• &arameters that go)ern the (rocess


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" metal-forming (rocess hereby• R!2 3!te"#!+$ !"e 3e+te(

• Mo+ten 3et!+ #$ po1"e( #nto !c!'#t5 #n t e 3o+(• W en #t $o+#(# e$, t!0e$ on t e

c !"!cte"#$t#c $ !pe o- t e c!'#t5.

C!$t#n6 Concept


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enerali/ed ste(s for any casting(rocess


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Step$ #n $!n( c!$t#n6 p"oce$$


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Step$ #n $!n( c!$t#n6 p"oce$$


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• Concept


• Met!+$ p"oce$$e( /"e!0 1p• *orld trend and India+s (osition• &arameters that go)ern the (rocess


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Characteristics 01)e and 2)e3

+ves:

• 555 year old (rocess. The oldest sur)i)ingcasting is a co((er frog from 6755 BC• It is ada(table to

– intricate sha(es, – to e8tremely large (ieces, – to mass (roduction.• It can (ro)ide (arts ith uniform (hysical

and mechanical (ro(erties throughout• !conomical 0de(ends on sha(e...etc3


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+ves:


– intricate sha(es – e8tremely large (ieces – mass (roduction 0in some cases3.• It can (ro)ide (arts ith uniform (hysical



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+ves:





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+ves:





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+ves:• The necessary tools re9uired for

casting molds are )ery sim(le andine8(ensi)e. "s a result, for

(roduction of a small lot , it is theideal (rocess.• rain si/e of cast com(onent can be

easily controlled by controllingcooling rate hich in turn can be usedto modify the (ro(erties.


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+ves:• %ear net sha(e• o scra(• #elati)ely 9uic; (rocess• !asy to ma;e hollo sha(es• %o limit to si/e

• Su((orts recycling of metals



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Negatives:• &oor surface


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• Conce(t

• Ste(s in)ol)ed in metal casting• C !"!cte"#$t#c$ %&'e !n( )'e*• *orld trend and India+s (osition• reen sand mold casting:

• Ste(s

• >eatures• "((lications• &arameters


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• Conce(t


• Met!+$ p"oce$$e( /"e!0 1p• Wo"+( t"en( !n( In(#!7$ po$#t#on• &arameters that go)ern the (rocess


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World trend and India's position > 2010 statistics


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75?? Statistics


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• Conce(t


• Metals (rocessed-brea; u(• *orld trend and India+s (osition• P!"!3ete"$ t !t 6o'e"n t e p"oce$$


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>or each casting method, there ill be a

(articular set of (arameters that go)ernthat (rocess. The follo ing are general(arameters a((licable to all (rocesses

•Te3pe"!t1"e$ %Me+t#n6 !n( po1"#n6*•Met!+ co3po$#t#on cont"o+•De$#6n p!"!3ete"$ o- G!t#n6 $5$te3!n( "#$e"•Mo1+( p!"!3ete"$•Coo+#n6 "!te %0noc0 o1t t#3e*

&rocess (arameters

lecture 1 metal casting introduction

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