Giáo trình ma sát học - Chương 1 ppsx

Glao trinh " Ma sat hQc" c1U'~cvltit nhc\m phl;!c vl;!
cho cac lejp cao hQc ngimh kY thu~t Cd khL Ngoai ra no
cCingcO th~ dung c1~tham khao cho sinh v~n Cd khf cac
nam cuOI, cOng nhU' nhO'ng al cO mong ·muOn tfm h~u
v~ ma sat d~ cO hU'dng nghi€:n cli'u v~ linh
vl.!C nay.
Glao trlnh nay cO sl.! tham khao nh~u tall~u cua
cae me gta trong va ngoai nU'CJc~ linh
vl.!C ma sat,
Song vdi trinh d~ cOn nhi~u h~n ch~ cCing nhl1 v~c n~m
bc1tthOng tin cOn nh~u kha khan, thO! glan chuAn bf It ~
il6n ch~c chan khOng tranh khoi nh~u sai S()t.
Tac gia mong muOn dU'~c Sl.! gap
'i va ph~ blnh
d4 l6.nsau cOth~ lam tot hdn.
Chan thanh earn dill
Ngua bi€:n ~n.
itb. -p~ -pt"t .4,.
1
~" ". ic;Crtt1d'NGl ,
DAI CU'dNG VB KY THUAT.MA,SAT

, .
• 1. Khil nl,itl'chung: " , c"," ( •. ~ ,
Ma sat Ia h~n tU'c;Kl9tOn~l trong tl[ nhi&rl,'imang
~i cho oon ngU'a nhklt' va; 'tL\'a;' a.o' ptlep- t\am con't3u,
OtOdang eh~y vdi tOedQnhanhtro'tlg
khOanh khae, ghi
giQngnoi oon ngua ~n dia ' '- "
E>6nnay v~ nhi&uphLfdngd~n, masatVlin can ta
mQtdi6u bi ~n. Trong qua trinh ma ~tv2f

Chi trong qua
trlnh do da dOngthdi xay ra cae qua'trfl'lfi'
6<1' hQe,d~n,
nh~t, hOa va rung d~ng. Ma sat cOth'
tam tang h~e
giam dQ b6n, hlQng cacbon
'{rongklfn'~, tam thAm
h~e m'tHydro, b~n dOi vang,'~cfi ram thanh Oxyt,
dann bOngChiOOth~e han chting:'M.,'Sit,ta'qua trinh
tl[ t6 chUe,trong do cae hklrin;~g -~Yl"a
'thee> mQttrinh
tl[ me djnh va hQPIY. cae h~n tUQIlgnay dan d'n Sl[
pha huy bA'm~t, h~e ngU'Ci'C~i
~o"tiffn~t h~ giam d~
~
;r ,!" .• - .
mon, va,mil sat. ,.'
Gcinli6n va ma sat ta mQt'1rOngnhong vein d~
cAp th~t nhAt : s,-! hao mon cUa'may m6cva th~t bi.
Chi phi cho ~e sUa chua may rOOcdo'tfae\fnon reit ldo
va tang ~n hang nam. 'Keo'daftti61'''th:qclia may du "
mue d~ khOngldo et1ngngang va ~d·(flta vao mQt I,-!e
hlQngsan xuAt dang k~. VAn d~n§ydllQ6sirquan ~m
dOngdao cUa cae nha thitit k' cOrig~; 'nhUng ngua
sa dllng va cae nha bae hQecUa
nht6u<nganh khae nhau
nham dua ra nhUng bkln phap '" 'lh~tk~ cOng ngh~
2
cOngnhlt sU'dl:lng d~ n~ng cao tuOi th9 ctia may; d~u
nay lam phcit tr~n b~c,.tbu~1 ~,~a sat - mai mon va

b6i trem. Khao ,hge n~y 4.Lt9(rriSh~n Cliu r¢ng rai trong
cae nha may,
"cae trii(in~'<Lji tipc, @(; ',vi)ii ~ngh~cU'u
va da d~t dltge nhung thanh tl!U rat quan tr9ng. SU'dl:lng
nhllng thanh tL!Uay eho phep ta :n~ngp~oJo r~t W~ "'9
v.ad¢till~Y:
q;.a ma,y.
• 2~"NhinethgMntH GbMab:~ r.a.;ir: >,11""
, " '"j, ~" - -=' '$I'lj~" ,', "
. 4" . ~ . -, . __ •.
' . - , " ."_ "'-~ '. :: '! .i:
- SL!bOitran;
"~~.ctUJy~lLdich
SQ, ~;,-,
>-, _ ':'~ ~ l1gem~ ~t;-
,:)~ao.4TlQOi ,'" ,
:~,:,~lDt~mGn;- " to: pr,},-, C'!' .,'~. ,:> ,:-~ ••-; ,.,.',
," - .• H6,$O barn·diIlh; " . , ~J"
, ,'~H.~ fJ@fJPrit;" 'J.~_~__ ~i-"'~" ,:
-,HciaJlocJnasat; , ~
. " .' '.' j -' "I" C
,·-Kkn·Iea; hnG,~ng;=i ., ;" "''''r''~ '\!l-'-':••• J. , __·,e~~ ~_~ , J, _" JL'~:"- __·~,; .'__~-"
< • ~ thuAt ~~.,
". -",r'y, ,',.~ .
@Ci\ ~r t',.' , '
~l,.l1~rna~~t;, ',;-,~,h{ •
LL!Cma sat tinh Idn nhat;
,r; ,,,:tHll'}.C masat;
!" ~!sat ~,bOitrdn~
.~.Masat

d~ng; '. ,
Ma satkbOng~i~;,.,~
.•Ma, sat Jan;
, -Ma,~1ngqcilij.
•.·Ma:sat tinh;: .
; • ~a sat trltQtj
St1m§I~rnc:,n;
3
- V~n tOetntc;rt;
- V~t I~u bOitran.
• 3. N9i dung h'ftoi~CiuakY thu •.t ma sat h9G :
3,1. ~~ng, ehti cc:ieI<'t ~u ma sat khOng mon
nhl1 n~rig cao dQ cung
M m~t ma sat (th~m Cacbon,
Nito, Xyanua, m~ CrOm,tOib~ m~t ). T~t nh~n trong
trLt~g.hQP ap ,~uc!lt~u~.!dn thif<;:a,?phl10ng pbap.tr~n
-khOrig'cOnthich hQpna~;.~~di.J.~~)~~~~gh~n cuu mQt
kha nsmgdap ung dl1Qclhi'dilg hQPd6 fa phl1d1lgphap
djeh chuy~n chQnlQekhi ma sat.
, 3.:r 81.0 v~chiti6t khoi.•sl1mai mon,My'oro,do la
. '. , .' , .• ,. ,,1ft .', .
5t! ~P:~~~:H.~~rc>. ~r,~tm~~ch~ ~.lfl(tg:~~,~~u. P6i
tran, nfflih I~u, mtdC )1am fang nhan,hslf mal mono
'., 3;:?; ~~~cncUO!>h~On? .P~~P~~J~:,~ng~rcuOi
khOng1i~h\l1.Thl!e ch~t Ia ~ m~t chi t~t ma sat dl1Qe
phu n1QtJapman Lalin;ibronzo, h()~edOngb~ng ph'uang
phap-chuy~ndjch kim lo~i khi ma sat. Trl1dekhi phu, b~
m~t dltQCi!y ~ch d!u m6,vad~~ phu bc\ng.,Glyx~rin
hay h6n hQpGlyx~rin
+ A1fSulfuatlc ~~~ 1'0%). Trong

qua trfnh ma sat mQt lap 6xyt tr~n ~ m~t thep bj pha
hUy,
tst rri~t hex>kim dOng dltQCdeo h6a va-x~m thl!e
vao thip: iCfll1iu day' tOp dOng hay' Latin djeh ct1~y~n
khoang
1d~n 2 JJl11 .
. _ ." _:- '. r .••
3.4. Hoan'th~n h~ thOngbOitroo va mo r~ng san
xu"t .chung. Trong' 'vl~e.ell' ~o ca'e h~ thOng b6i trdll
n!y' -phai k~ dtin hang "FR6GHEN" cuaE)uc hay
"mASON"
cUa My , ,
~, ,'" , ;! , .'. "i :'''~' ,"'! : •. ,,', ,; , ,'.001;
,,3.5. N~dung eua 'Iy thuy~t v~. ma sat va_.mai
mono '
:j
~_._
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