pengumolahandata

8/18/2019 pengumolahandata

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2/14

Laporan Akhir Praktikum Perlakuan Panas

2 e + i a P e

n + i n ,

i n 0 l i

2 e + i a P e

n + i n ,

i n A i r

2 e + i a P e

n + i n ,

i n 4 o

r m a l i 7 i n

,

2 e + i a P e

n + i n ,

i n A n

n e a l i n ,

0

10

20

30

40

50

60

70

80

8ia,ram Har,a ekerasan

Perco'aan ke 1 Perco'aan ke # Perco'aan ke 3

&am'ar #% 8ia,ram /atan, Har,a ekerasan /er'a,ai 2e+ia Pen+in,in

li Air ormali7in, Annealin,0

10

20

30

40

50

60

70

Har,a ekerasan Rata6rata 'er'a,ai me+ia pen+in,in

Har,a ekerasan Rata6rata 'er'a,ai me+ia pen+in,in

HRc

LA/RA-RI2 L&A2 -EI 2E-ALR&I AI #0156#01"

HRc


3/14

3,91 inch


&am'ar #9 8ia,ram /atan, Har,a ekerasan Rata6rata /er'a,ai 2e+ia Pen+in,in

3.5. Data Pengamatan

3.5.1. Pengumpulan Data

• enis 2aterial : /a;a AISI 4340

• 1"


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0.208

0.226


-a'el 31 Hasil Pen,u;ian ekerasan

Posisi (inch) ekerasan HR=

1>1" 59

4>1" 4#

%>1" 30$5

1#>1" #9

1">1" #"$5

#0>1" #1

#4>1" #5

#%>1" ##

3#>1" #

3.5.1.2. Komposisi Kimia AISI 4340

-a'el 3# omposisi imia /a;a AISI 4340

enis

material

omposisi kimia

?= ?=r ?2n ?Si ?2o ?i

/a;a AISI

4340

0$36

0$44

0$"56

0$95

0$556

0$90

0$156

0$35

0$#06

0$30

1$556

#$00

3.5.1.3. Diameter Ieal !Di" #kuran $utir an Kur%a Di &s '(



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&am'ar 35 ur@a 8iameter I+eal (8i) s ?=

3.5.1.4. Diameter Ieal !Di" #kuran $utir

-a'el 33 8iameter I+eal (8i) kuran /utir

8ata ?= &rain si7e B

8i minimal 0$3? 0$#0% Inch

8i maksimal 0$44? 0$##" Inch

1.5.1.5. )aktor Pengali #nsur Pauan Hardenability

*ra+ik

-a'el 34 aktor6aktor Pen,ali Hardenability



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?= aktor Pen,ali

2n =r Si 2o i

0$3? 3$09 #$50 1$10 1$40 1$"0

0$44? 3$%0 3$00 1$30 1$"0 1$%0

3.5.1.,. Harga Kekerasan stanar

*ra+ik

-a'el 3" Har,a ekerasan Stan+ar

3.5.1.-. Pengaruh iameter kritis terhaap IHDH


?= HR=

0$3 55

0$44 "0


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&am'ar 3" ur@a 8iameter ritis -erha+ap IH>8H

3.5.1./. Pengaruh iameter kritis terhaap IHDH

-a'el 3 ekerasan +an IH>8H Pa+a /er'a,ai Posisi

Posisi (inch) IH>8H ekerasan HR=

2in 2aC 2in 2aC

1>1" 6 6 55 "0

4>1" 1$0# 1 53$9 "0

%>1" 1$1" 1 4"$" "0

1#>1" 1$3" 1 40$44 "0

1">1" 1$5# 1$0# 3"$1 5%$%#0>1" 1$"0 1$0" 34$3 5"$"

#4>1" 1$%0 1$09 30$5 55$04

#%>1" 1$%" 1$1# #9$5 53$5

3#>1" 1$91 1$1% #%$ 50$%

3.5.2. Pengolahan Data

3.5.2.1. Harga Diameter Kritis



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8iaameter kritis ! 8imin C ( p2n C pSi C p=r C p2o C pi )

i+eal minimal ! 0$#0% C ( 3$09 C #$50 C 1$10 C 1$40 C 1$"0 )

! 0$#0% C ( 19$034 )

! 3$959 inch ! 100$5%% mm

8iaameter kritis ! 8imaks C ( p2n C pSi C p=r C p2o C pi )

i+eal maksimal ! 0$##" C ( 3$%0 C 3$00 C 1$30 C 1$"0 C 1$%0 )

! 0$##" C ( 4#$"%1 )

! 9$"4" inch ! #45$5%% mm

3.5.2.2. Perhitungan Kekerasan $erasarkan Posisi

• Posisi 4>1"

HRc min

4

16=

HRCmin

IH DH

posisi HRc max

4

16=

HRCmin

IH DH

posisi

HRcmin

4

16=

55

1,02 HRc max

4

16=

60

1

HRc min

4

16=53,9 HRc HRCmax

4

16=60

HRc

• Posisi %>1"

HRc min 8

16=

HRCmin

IH

DH posisi

HRc max 8

16=

HRCmin

IH

DH posisi

HRcmin

8

16=

55

1,18 HRc max

8

16=

60

1



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HRc min

8

16=46,6

HRc HRc max

8

16=60 HRc

• Posisi 1#>1"

HRc min12

16=

HRCmin

IH

DH posisi

HRc max 12

16=

HRCmin

IH

DH posisi

HRcmin

12

16=

55

1,36 HRc max

12

16=

60

1

HRcmin

12

16=40,44

HRc HRc max

12

16=60 HRc

• Posisi 1">1"

HRc min

16

16=

HRCmin

IH

DH

posisi

HRc max 16

16=

HRCmin

IH

DH

posisi

HRcmin

16

16=

55

1,52 HRcmax

16

16=

60

1,02

HRcmin

16

16=36,1 HRc HRc max

16

16=58,8 HRc

• Posisi #0>1"

HRc min20

16=

HRCmin

IH

DH posisi

HRc max 20

16=

HRCmin

IH

DH posisi

HRcmin

20

16=

55

1,60 HRc max

20

16=

60

1,06



11/14


HRcmin

20

16=34,3

HRc HRc max

20

16=56,6

HRc

• Posisi #4>1"

HRcmin24

16= HRCmin

IH

DH posisi

HRc max 24

16=

HRC min

IH

DH posisi

HRcmin

24

16=

55

1,80 HRc max

24

16=

60

1,09

HRc min

24

16=30,5 HRc HRc max

24

16=55,04 HRc

• Posisi #%>1"

HRc min

28

16=

HRCmin

IH

DH

posisi

HRc max 28

16=

HRCmin

IH

DH

posisi

HRc min28

16=

55

1,86 HRcmax

28

16=

60

1,12

HRc min

28

16=29,5 HRc

HRcmax

28

16=53,5 HRc

• Posisi 3#>1"

HRc min32

16=

HRCmin

IH

DH posisi

HRc max 32

16=

HRCmin

IH

DH posisi

HRcmin32

16=

55

1.91 HRc max

32

16=

60

1,18



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3.5.1.12. Kur%a Hardenability Jominy Test

1/16 4/16 8/16 12/16 16/16 20/16 24/16 28/16 32/16

0

10

20

30

40

50

60

70

"omin# te$t

&am'ar 39 &ra*ik Hardenability Jominy Test

3.5.1.13. Kur%a Hardenability Band dan Jominy Test



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1/16 4/16 8/16 12/16 16/16 20/16 24/16 28/1632/16

0

10

20

30

40

50

60

70

%omin# Te$t

Di &in

Di &!

&am'ar 310. Hardenability Band +an Jominy Test


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