cenverting ra) materials irta use-ud,

A, The process eonomieátsh

tproduct by varlous mean1 through an e o e o
called manfacturlng proces.
y is
Casting is, am important mnufactuing procoBs
versatility ibai prd
2, Matelal optlenssov
3, eDst ettective
4. strength& durobility
S, Size and sanle
6, Reproductivity
7, customizatlon &ftesibility,
8. Heat resistanee

A. Cactinga'sand casthng
9, Joininq in gldin
shapirigesion,draolng
3, forming h
Machining ahenrinq operadion
4.
*. fnishi - oliching boning
3. J, Pattern making
2. Mold making
3. pourinq
4, cooling
S. deaning
G, Hachininq
7. finishiq
4.
pattern metal meltinge
making &treatment
mold &core Irourin
2osting.
making reeydad da
sand veovoY sepeaten
cÀstig mold
arechnaln
Vemoal af risen
IUnner

|dewning)
(eingl.
 puringeup gas vent

Cope -spruC riser

CorR parting ine
droq qat
chaplet
6. Allowances
1. Shrinage
2. Tapper/shaee draft
3. chamberfdajt distortion.
4. Shake

S. Maching
Ditferene betgoen, sond, cahngnd di cgating
7. Ditferenus betueeen Sad casting &die casting'
Sand castn Die casting
|!. reusade steel onold
1. send mod
Suitable tor Irtricate shpe
2.stuitabefor complex 2,stttt
shape 3.smoother Surfae finish.
3.oo Rougha surface
finish grod dimensioral
preise dimensiona 4. preuse
4. es Lontrol
control
s, fastr producion rate
S.slooer, production rate
tooing cost G. Htig her tooling Lass CÒSh
6. louwer
oide range f material 17. uni ted to non ferrous
7.
is o s, tigh overall 'cost
,8overall cost
|9, ütte or no post proash
9.Npre post processing
10, suitade tor hih orloc 40. suitabuor low vslum.
volume
S. casting dejats :
1.shinkage
3. meld shij
4.catd shut

6. Hottaar
Tporosity
9. haplets are the mecanical support & the
mold cavity. Somtimes t ne
is no
Core inside the
el'core prìots to holdthe core in
possible for the
aterial.
Place..thats ohy choplet is used as support
}. Green strength
2.tardend strength
3.God refractorlmess
4. pe permeabilty
5friability
6. Surface finlsh
7. chemically inert.
10. Pattern is the aaet eplica the cbeet to be at.

. Shrintage
2.Nachining
3.Drtt/topper
4.shake
s. Distoeticn/chamer

12. Loose pteee porttern

!4. factors attern selection vuteli4

6.Dimensioral aceuTOY -
J. Design complexity cerz
2. Repeatiion 7. position
3, Used material
4. type f casting
s. cost etectiveln ss
 Gatet pod tern split pleee potten.

16,

17. Properties 6f olding sard ':

J. Reftactoriness
2. Permeabi lity
3. Cohessiveness
.
4.ompresçibility
S. wllapsibility.
L flouabi ity
87. Moisture wntenl.nsitslsz tftog ts isot
 Expandable Non-expondable
se ur multiple use
J,singe
!,
2. suitable for
p. bigger e. surtabe tor.smaller
objet
5. Disontiniaussr
3,eapid
4. high production rate
4..sloo production rate
s.heap s,costly
ttnish.
6,Rough surface finish 66, good surfae
suitbe for compos shipe"
comdo 7.
7. not sitable for
shape 3. preise
8.bot præise

19, pie (casting vohere olten ntal

ating
I+ is a pumanent imold high pressura
pre made die cavity orth
is injected into
tot chambei die çosting:
1,
 20. eold chamber die
Hot chbm be di
4, Herting danber ts inte2i not integrated
rated wHh die mahine
2, Alloy - A1, Bras
L. Alby-zinc, Cu, Mg . Pb

shape/chamber'?
3. GoeTZck chom ber
3..cyindricad sleve shope'
domber

4.prer is ts dosina 4-Hydaically a cparatad

punger
S. reing/rapd S yelie

3, épurii polystyren casting Proas .

otesy material
2. pt in te rrotd bor

3. veu trlis poured

4.ostesuopeutzd
22. Investment asting proess

8
J,wax Patterns are
produced
2. several patterns are
con nected orth an sprue
3.Coated oth ceramic
4.Baked in oven to po
rotethe o n E
S. The canting is done in
he blank cavtty.
23. Shell mold carting i
1.patterm is coated oith
rejractory cnafing
2, sand-wth s resin bnder
2.

is ekep in a box an dte

box is intéited camping wtin
paitern.
t baked in oen
3.The sand #destuek pattern is
4. Another part is producid
S. casting io dene oin raular y
4,
one
o investment asting Ywar evaçorated
() Die casting:
Htot chamber, cold chamber
() Lost foam

25
cuntrijugal
casting
J. mold consist one 1, mold consist SF+00
Part :

2-The ner par mold 2. Inner part o'rotates !

art rotates vertically outer ranal's sttiorony.
3. shape can be: 3 shape is comperati vely
compler simpu
. suitabe forsymnetia
4. metaj distri buion by4.metal dissti buted and
cetrisugal forcebthe outer part condirms he
shape
S.uss expensive " , More'isp ensiyvhi,2
26.
27.Nath

29. function f core ? produci ng hollow shpe

d
eotstnal tra meta to supply in
Y
any further rquirement
the aavit for

29, property corei'tt

6. squeere castng

Advantage: pisadvantage
1. bRapid produeion a, oti flexiben e
2. automation no derign complerity

,
 jetor
pin
32, ,hopper
ertruder
motor

clamping moving tationary 2

art tig!igjection molding
usitpar

33. Extrusion molding pallets

Heater

coo ing oiollp?

Borrel

34. slow; nolding Streteh blota molding

1, Air pressure 1. lnjtion reheat streteh
2. coriious e 2too stage.
3.oniform holloo öbjeet|3'pYeesz holfovo'objeetss.
4. Pve 9. PET
S. medium and large |s, Smal) to medi um sized
sinzed object objenl
6. oreqular botte 6. Beverage bottus
contuners
35.

Advartages Dsadvartaqes Applcchen5

1, Raptd J, Not precise 1.reqular bottle
2. lowcost 2.not Hexibe 2. Hollpwpbstic
products
3. High produton|3. intjal eost hgh
rate |4.anot sitabl
4. tow mainteinaned for every plautis
S. less skill reguind
6. Automaton

36.
37.
Reqular ertrusion pastie prsduet
Extrusion molding.
-’tten ìnietion into the nold
Injection Extruston
wlth pressure t piston

38.fadors webing?
J, Type S metal 6.fabricahon proess
2.Type Joint 7. strenqth f joint.
3, Enironmen S. Effiiency.
4,Thickness
5. wst
39.

Butt
iwt.
T
Tee cdqe
40
Themoplastics thermosetting plastics
1sotten on heating I. does .not
1. oiuI 30.
2. Long hain 2. 3-D structure
a.addition polymer 3. eondensation olynir
4. can be reshaped 4. canno be
& reused
S brtte
S. less brittu
L, ton be creyded 6. can not be

42, tromn sheettc: