Gii thiu chung: Cng nghip t l nn cng nghip pht trin t lu v ngy cng c trin vng. X l b mt l mt khu quan trng trong sn xut t. Sn phm sau x l i hi phi bo m chng n mn trong iu kin kh hu khc nghit, bn p v bo m tnh trang tr cao. Khung xe s c to hnh, x l b mt, sau tin hnh pht pht ha, crmat ha v sn ph.*

Quy trnh sn tnh in:*

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X L B MT TRC KHI SN PH:

*LOI BA VIA:S dng cc bin php c kh nh mi, nh bng c hc loi b phn no bavia ca v xe dng mc.

TY DU M:Mc ch: Loi b lp du m ng thc vt trn b mt khung t.

Phng php tin hnh: ty du m in ha.+Phn cc catot- phn cc anot-phn cc catot. +Tin hnh treo khung xe trn c hai in cc, dng dng in xoay chiu in th thp( 6-12V) ty.

*Cch kim tra kim t do:Chun 10ml mu dung dch trong b ty du bng dung dch H2SO4 0.1N cho n khi mu dung dch xut hin mu hng.

Khong im n nh ca l 28 - 36 im.

pH cho b hot ng bnh thng l 13 - 14.

C ch ra:*

TY G: Mc ch: Tin hnh trn b mt c ty sch du m, nhm ly i lp g dy v lp oxit mng. Phng php tin hnh: ty g in ha. Dung dch ty:

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Dung dch bc lp bn c dng:

Tin hnh ty nhit phng. *

*Trung ha b mt :

B trung ha c tc dng trung ha ht lng d axit cn bm trn b mt sn phm v bo v b mt, ngn vic pht sinh g tr li do lng axit cn d trn b mt sn phm.

nh hnh b mt: B nh hnh b mt ngoi vic trung ha n cn ng vai tr hot ha cho qu trnh photphat nhanh hn, du hn, lp photphat mn v bng hn.

*PHT PHT HA:c im ca photphat ha: Lp ph photphat c mu xm sm nh lc, c cu to tinh th, cch in, t hoc khng xp, gin.

u im ca lp photphat:Tng tnh chng n mn. Lm lp lt sn gn chc vi kim loi.Tng trn khi ko rt sn xut dy kim loi. Cch in cho cc tm tn silic trong ch to ng c in, bin p, v thit b in khc

C ch photphat ha: Cc phn t gm mt u k mc v u khng k nc tp trung li thnh nhng Micelle.Qu trnh hnh thnh lp photphat: kim loi nn tan ra nhng e, mui PO43- , kt ta ln b mt kim loi.

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*Kim tra b photphat ha:+ axit tng ( At):+ axit t do( Atd):+T s ti u At / Atd = 7/1 hoc 8/1.Kim tra lp ph photphat:Khi lng lp ph: + Chiu dy lp ph. + xp ca lp ph.Hnh thi lp ph: cu trc tinh th.

*Xc nh kh nng bo v ca mng:

Cht lng mng nh gi theo 4 loi bng s thi gian m mng cha b hng:

Th ng: Mc ch ca th ng l hn ch tc dng ca khng kh vi b mt sn phm ngn khng cho g tr li.

Sy kh: Nhit ca sy l < 140 C ,thi gian sy ty theo khi lng v tnh trng sn phm.*

SN TNH IN : Sn tnh in l qu trnh di tc dng ca dng in trng, ht nha hu c mang in dng bay v bm vo sn phm tch in m. SY SN: .- Sy: Vt sn sau khi sn c a vo bung sy. Ty theo chng loi thng s k thut ca bt sn m t ch sy t ng thch hp (nhit sy 150oC - 200oC, thi gian sy 10 - 15 pht). - Cui cng l khu kim tra, ng gi SP*

u im: Do trong qui trnh x l b mt tt, qui trnh phosphat km bm chc ln b mt kim loi, nn sn phm sau khi sn tnh in c kh nng chng n mn cao di tc ng camitrng. Mu sc ca sn phm sn tnh in rt a dng v phong ph nh sn bng hay nhm sn, vn ba hay nh bc... V vy, sn phm sn tnh in c th p ng cho nhu cu trong nhiu lnh vc c bn v thm m cao, c bit l i vi cc mt hng dn dng, trang tr ni tht, thit b dng c trong ngnh gio dc, y t, xy dng, in lc,... *

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