Cov qauv hlau muaj ntau qhov zoo piv rau cov qauv ua los ntawm cov pob zeb ua kom muaj zog, thiab ua ntej ntawm tag nrho cov, qhov no yog qhov hnyav dua thaum tuav lub zog xav tau. Tsis tas li ntawd, cov txheej txheem hlau tuaj yeem ua kom tawg, thiab lawv cov kev tsim kho tuaj yeem ua tau txhua lub sijhawm ntawm lub xyoo. Tab sis cov qauv hlau yuav tsum muaj kev tiv thaiv los ntawm cov teeb meem ntawm ib puag ncig (hnub, dej, cua, kub hloov), thiab nrog rau kev tiv thaiv tshwj xeeb (cementing, nitrocarburizing), hlau pleev xim yog siv. Cov txheej txheej txheej tuaj yeem tiv thaiv cov hlau los ntawm txhua yam saum toj no. Ntawm lwm yam, xim ntawm cov qauv hlau kuj tseem siv los muab cov qauv ua kom zoo nkauj.
Kev saib xyuas tshwj xeeb yuav tsum tau them rau kev xaiv ntawm kev pab them nqi. Xim rau hlau yuav tsum yog tshwj xeeb, nrog rau tej yam ntxwv. Tam sim no, tsis muaj teeb meem nrog qhov no, txhua qhov chaw tsim khoom suav nrog cov xim tshwj xeeb rau cov hlau hauv nws cov kab.
Kev pleev xim rau cov qauv hlau yog lub luag haujlwm thiab siv sijhawm ntev uas yuav tsum muaj kev txawj ntse. Nws tsis yog hais txog technology xwb.txheej, tab sis kuj nrog lub fact tias xws li cov qauv yog heev loj thiab nws tsis yog li ntawd yooj yim mus thov ib tug txheej ntawm cov xim rau lawv. Cov qauv zoo li no feem ntau pleev xim siv kev lag luam nce toj, uas tsuas yog cov kws tshaj lij tuaj yeem ua.
Kev pleev xim ntawm cov qauv hlau pib nrog qhov yuav tsum tau npaj ua ntej. Xws li kev ua haujlwm ua ntej yog xav tau los txhim kho qhov adhesion (adhesion) ntawm cov txheej thiab cov hlau hlau. Ua ntej tshaj plaws, nws yog ib qho tsim nyog los tshem tawm cov txheej txheej qub, yog tias muaj. Tom qab ntawd, chips thiab kab ntawm corrosion yog ntxuav. Cov kauj ruam tom ntej yog ntxuav tag nrho saum npoo manually, mechanically los yog abrasive blasting los ntawm cov av thiab plua plav - cov kauj ruam no yuav tsum tsis txhob hla, txawm tias qhov chaw zoo li huv si sab nraum. Cov khoom txawv teb chaws yeej ib txwm muaj nyob rau ntawm cov hlau, thiab yog tias lawv tsis raug tshem tawm, cov xim yuav dov tawm cov ntsiab lus ntawm cov qauv los yog pw nyob rau hauv ib tug inhomogeneous txheej, uas yuav ua rau lub fact tias cov painting ntawm hlau lug yuav tsis zoo..
Ntxiv mus, yog tias ua tau, qhov chaw yog polished - cov txheej txheem no kuj tseem pab txhim kho cov adhesion ntawm cov xim thiab hlau. Cov kauj ruam tom ntej yog degreasing, nws yog nqa tawm siv alkaline, acidic los yog emulsion agents. Tom qab xws li ntxuav, nws yog ib qhov tsim nyog yuav tau tos - cov qauv yuav tsum tau qhuav tag ua ntej pleev xim. Cov txheej txheem npaj kawg yog priming - ua hauv ib lossis ob txheej nrog cov ntaub ntawv tshwj xeeb, txheej thib ob tsuas yog siv tom qab thawj zaug qhuav tag. Tom qabprimers, koj tuaj yeem ncaj qha mus rau staining.
Qhov tsuas yog yuav tsum nco ntsoov yog tias koj yuav tsum tsis txhob ncua sijhawm ntev ntawm kev npaj nto, priming thiab siv cov xim, vim hais tias cov txheej txheem tuaj yeem rov ua paug, thiab cov txheej yuav tsis dag zoo. Tab sis yog tias txhua txoj haujlwm tau ua tiav lawm, lub neej kev pabcuam ntawm cov txheej yuav yog 3.5 xyoo.
