Ppt Ekstrusi No Video
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Transcript of Ppt Ekstrusi No Video
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EKSTRUSI QODIRUN SALAM MUSAFFA
(141910101022)
MAULANA FAHMI CH (141910101014) YUDHA WIRADIKA
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SEJARAH
Pro! !"#r$% &'*%+!r"!',"' !"%#'r #'-$ 1.00*!' /!/+!r"!',"' !"#r$%
'-' ,o'/ *!'/!!"#r$% +%+' ,!'* D','/+ro!&' !$'- %,,!# $,'# *%
#!/+'#"' *','/ !$'-3-'/!r *' *%*oro /!,',$%!$'- 3!"'#' #!r$"' *!'/!$'"' !$'- r'/
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Pro! !"#r$% !*!r-''*%#$$""' +'*' '/'r !r%"$#
*% '5'- %%
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APA ITU EKSTRUSI 6
A*','- +ro! +!/!#$"'*!' +!!"'' ,o'/ "!r'!-%' /!',%r /!,',$%
3!#'"' &' #!r$"' $#$"/!-'%,"' !#$" !$'%*!' &' *%%%"'
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Pro*$" !"#r$%
7!!r'+' !% ,% &'*%$'"' +'*' '+,%"'% o#o/o#%8*' %*$#r% !+!r#% %"'%
!*!,' +''r 8r'/! r!,*,,Co#o- -'%, *'r% !"#r$%
',$/%%$/
◦ J!*!,' "$! +%#$ '#'+ ,%#''#%r'% !#','! #o"o *,,
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JENISJENIS EKSTRUSI
E"#r$% *'+'# *%",'%:"'%"'*!' !r''% 3'r' &'%#$!r*''r"' ;
"o:$r'% :%"&'#!/+!r'#$r "!r'
+ro! +!/!#$"'&'
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7ERDASARKAN KONFI<URASIFISIK
EKSTRUSI LAN<SUN<EKSTRUSI TIDAK LAN<SUN<
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!"#r$% ,'$ (directextrusion)
Pro! !"#r$% %% /!r$+'"'+ro! !"#r$% &' +',%!*!r-'' D','/ +!!r''&'
!$'- /'#!r%', *''r*%#!/+'#"' +'*' 3-'/!r &'!r!#$" %,%*!r "!/$*%'
!$'- *'//& ,o" *%#!/+'#"'*% !,'"'&' K!/$*%' '&'*oro *%!r%"' /!,',$% !$'-r'/ /!*oro /'#!r%', /!,',$%3!#'"' *%! '*' $ $ %,%*!r
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E"#r$% ,'$ *%!$# $'!"#r$% "!*!+' (forward
extrusion) *%#$$""' *','/'/'r !r%"$# %%
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E"#r$% #%*'" ,'$=
*%!$# $' !"#r$% "! !,'"'
(backward extrusion) '#'$ !"#r$%/$*$r (reverse extrusion)C!#'"' *%+'' +'*' $$ r'/
&' !r,$' P'*' ''# r'//!!"' !*' "!r' ,o'/ &'*%#!"' '"' /!',%r /!,',$%,$' r'/ *','/ 'r'- &'!r,'5'' *!' 'r'- !r'"'r'/
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EKSTRUSI TIDAKLAN<SUN<
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K,'%:"'% !r*''r"'#!/+!r'#$r "!r' E"#r$% *'+'#
*%,'"$"' *','/ o+!r'%pengerjaan panas '#'$pengerjaan dingin #!r'#$
+'*' ;
!% ,o'/ &' *%!"#r$%
!'r r!'' &' *%*!8or/'%
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Ekstrusi panas (Hot extrusion)
E"#r$% +'' *%,'"''"' +'*'
#!/+!r'#$r #%% $#$" ,o'/*' +'*$' &' #%*'"/!/+$&'% %8'# $,!# +'*'
#!/+!r'#$r "'/'r -', %%*%/'"$*"' $#$" /!$r'%'&' !"#r$% P!'/'-'
#!/+!r'#$r !"%#'r ?0 @ .0 *'r%/!,#% +o%# /'#!r%', #!r!$#
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K'r!' $-$ #%% '*' !8!"/!r$%"' +'*' 3!#'"'B*%! *'!!r'+' "o/+o! ,'%&'
/'"' *%+!r,$"' +!,$/''$#$" $-$ &' r!,'#%8 r!*'-*%$'"' o,% *' r'+-%#
!*'"' $#$" &' ,!%-#%% *%$'"' !r$" "'3'
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Ekstrusi dingin (cold extrusion)
Pro! %% *%,'"$"' +'*' $-$ "'/'r '#'$
!*%"%# *%'#'&'7!!r'+' /'#!r%', &' %' *%"!r'"' ;
#%/', #%/'-',$/%%$/ +'*$'#!/'' #%#'%$/ ''*%$/
K!,!%-' !"#r$% *%% '*','-;"!"$'#' !r#'/'- "'r!' '*'&'
+!!r'' r!'
#o,!r'% ''# "!#'# (+r!!%)
+!r/$"'' -'%, !"#r$% -',$ "'r!'#%*'" #!r'*% o"%*'%
,'$ +ro*$"% #%%
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Klasifkasi berdasarkan prosespembentukan :
Ekstrusi hidrostatik(hydrostatic extrusion)
Impact Extrusion
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Ekstrusi hidrostatik(hydrostatic extrusion)
S','- '#$ /'','- &' *%-'*'+%*','/ !"#r$% ,'$ '*','-!!"' '#'r' %,,!# *!'
*%*% "o#'%!r U#$"/!'#'% /'','- %% *%$'"'$%*' &' *%#!/+'#"' *%
!"!,%,% %,,!# *% *','/ "o#'%!r
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T!"'' &' *%+!r,$"' *','//!#o*! %% *%#!r$"' /!,',$%
/!*%' 3'%r *%!"%#'r %,,!# O,!-"'r!' %#$ #%*'" '*' !!"''#'r' %,,!# *!' 3o#'%!r
7!'r&' #!"'' %''&'/!3'+'% 1400 M+' #!"'' &'#%% +'*' r$'' *%#!r$"'*%#!r$"' o,!- $%*' "!
+!r/$"'' *%! !-%'/!$r'% !!"' *' '&'
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7%''&' /!#o*! %% *%,'"''"'+'*' #!/+r'#$r "'/'r *!'
/!$'"' /%&'" ''#%!''% $%*' #!r$#'/' 3'#o, o%,"'r!' /!/%,%"% 8$% +!,$/'
&' '%" *' %"o%#'&' #%*'"*%+!'r$-% o,!- #!"''
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Impact Extrusion
M!#o*! %% -'/+%r '/' *!'/!#o*! %*%r!3# !#r$%o *'!r% *%o,o"' *','/ "'#!or%
3o,* !#r$%o P$3- /!!"'
*!' 3!+'# +'*' ,'" *%/'','" #!r!$# *%!"#r$% "!'r'-!r,'5''
M!/$#$-"' '-' &' ,$'"!+!r#% A, #%/'- '#'$ T!/''
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K!#!',' +ro*$" !"#r$% %%!''% 8$% 3!,'- '#'r' +$3-
*' *%!A"%'# *'r% /!#o*! %% '*','-
!#$" "o/+o! %/!#r% *'
"!,$r$' +$3- *' ,'"/!'*% -', +!#%
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T$! !#r$%o
T'$B +%+' *'+'# *%+ro*$"%*!' !"#r$% *!'#'/'-' /'*r!, +'*' r'/
3,!'r'3! '#'r' /'*r!, *'*%*% /!!#$"' "!#!','+%+'
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Beberapa jenis cacat (deect)dalam produk ekstrusi :
' C!#!r$r# P%+%
3 S$r8'3! 3r'3"%
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Centerburst , retak yang terjadi padabagian dalam produk ekstrusi yangterbentuk akibat adanya tegangan tariksepanjang garis tengah (center line)bendakerja selama proses ekstrusi.
Piping, cacat yang terjadi pada proses
ekstrusi langsung, dimana pada ujungakhir billet terdapat lubang. Untukmenghindari terbentuknya cacat ini dapatdilakukan dengan menggunakan
blok dummy dengan diameter sedikitlebih kecil daripada diameterbillet. amalain dari cacat iniadalah tailpipe dan !shtailing.
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Retak permukaan (surfacecracking), cacat yang terjadi
pada permukaan hasil ekstrusi."al ini terjadi karena #
gerakan ram terlalu cepat,
gesekan antara billet dengandinding kontainer,
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