Gowri Shankar Review

8/10/2019 Gowri Shankar Review

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DESIGN AND ANALYSIS THEEXPERIMENTAL

INVESTIGATION FORREDUCING CUTTING TOOL

WEAR RATE BY DEEPCRYOGENIC TECHNIQUE.

BY

GOWRI SHANKAR.A 1


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To design and analysis the experientalin!estigation "or red#$ing $#tting tool %ear

rate &y 'eep $ryogeni$ te$hni(#e.

Objectie!

)


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Ab!t"#ct

The high speed steel is #sed as a $#tting tool*

sin$e it has good (#ality and relia&ility at$heaper rate %hen $opared to other $#ttingtools.

The $on!entional $ryogeni$ treatentpro$ess in!ol!es $ooling do%n the saplesto &elo% +1,-$ / soa0ing "or soe period o"tie and then slo%ly heating &a$0 to roo

teperat#re in hrs.

2


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3or the ipro!eent o" high hardness andgood %ear resistan$e* !ario#s heat treatentand $old treatent pro$ess are #sed.

One s#$h e4e$ti!e and $#rrently #sedtreatent pro$ess is 'eep $ryogeni$ treatent.

5ryogeni$ treatent o" high speed steel is oneo" the de!elopents in an#"a$t#ring 6eld.

I$t"%&'cti%$

7


5/20

These tools are #sed to a0e "or $#tting* "oringor shaping *t#rning a aterial into a part or$oponent adapted "or a spe$i6$ #se.

The retained a#stenite is so"t and #nsta&le

at lo%er teperat#res that it is li0ely totrans"or into artensite. 3reshly "oredartensite is &rittle and only teperedartensite is a$$epta&le

8


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Greater %ear resistan$e $an &e o&tained%ith longer soa0ing periods

%hi$h ipro!es the %ear resistan$e to theaxi# possi&le extent.


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There are di4erent types tools #sed "ora$hining pro$esses s#$h as high speedsteel* $ar&ide tipped* diaond tipped* et$.

These tools ay get "ail#re d#e toin$rease in teperat#re and tool %earay o$$#r %hile a$hining high hardened

steels.

REASON FOR SELECTING THIS PRO(ECT

9


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'#e to these dra%&a$0s in di4erent tool aterials%hile a$hining %e ha!e sele$ted the $ryogeni$treatent o" tool to a$hine the aterials

Tho#gh %e ha!e sele$ted this experient and it%ill &e &ene6t "or the an#"a$t#ring ind#stries.

-


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3:ANK W;AR 3A5; W;AR

NOS; W;AR

3lan0 %ear is a


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The "a$e o" the tool is al%ays $onta$ted%ith the $hip is 0no%n as $rater %ear.

The nose %ear o$$#rs on the nose radi#s o"the tool

1=


11/2011


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%ear and the


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The $ryogeni$s is the st#dy o" theprod#$tion o" !ery lo% teperat#re >&elo%?18= 5@ and the &eha!ior o" aterials atthose teperat#res.

A eleents #nder extreely $oldteperat#re is $alled a $ryogeni$ist.

12

DEFINITION OF CRYOGENIC


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It is deri!ed "ro the Gree0 %ord as*

5ryo ++ 5ooling

Geni$ ++Generation.

The $ryogeni$ sol#tions #sed "or thetreatent o" high speed steels.

:i(#id Nitrogen >+1,$@

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P"%*e"tie! %+ Li/'i& Nit"%0e$

'ensity + 1.)81 g:elting point+ 2.182K >)1=$@Boiling point +99.2K >+1,8.9,$@

5riti$al point +1).1,KHeat o" !apo#riCation +8.8KDol


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Tool

Hardness test

5ryogeni$ test

1

P"%ce!!


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Hardness test

3itted on tool post

a$hining

Tool %ear $al$#lation

19


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In 1,2=Es* st#dies %ere ade to ipro!ethe properties o" steels &y eans o"ordinary $old >s#& +Cero@ treatent +-=5

1,9=s* the de!elopent o" lo% teperat#rete$hnology had extended the $ryogeni$treatent teperat#re do%n to +1-= 5.

1-

Lite"#t'"e !'"e)


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No% the de!elopent o" lo% teperat#rete$hnology is going to extended the$ryogeni$ treatent teperat#re do%n to+1,- 5.

1,


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T1#$2 Y%'

)=

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