Thaum peb kho lub cav tsheb, qhov tshwm sim ntawm "peb qhov xau" (dej to, roj to thiab huab cua to) yog qhov mob taub hau tshaj plaws rau cov neeg ua haujlwm tu. "Peb qhov xau" yuav zoo li ntau, tab sis nws cuam tshuam ncaj qha rau kev siv lub tsheb thiab kev huv ntawm lub cav tsheb. Txawm hais tias "peb qhov xau" hauv qhov tseem ceeb ntawm lub cav tuaj yeem tswj hwm nruj yog qhov teeb meem tseem ceeb uas cov neeg ua haujlwm saib xyuas yuav tsum xav txog.

1 Hom cav ntsaws ruaj ruaj thiab lawv xaiv

Qhov zoo ntawm lub cav foob cov khoom thiab nws cov kev xaiv raug ncaj qha cuam tshuam rau qhov zoo ntawm lub cav foob kev ua haujlwm.

① Cork board gasket
Corkboard gaskets yog nias los ntawm granular cork nrog ib tug haum binder. Feem ntau siv nyob rau hauv cov roj lauj kaub, lub tsho dej sab npog, lub qhov hluav taws xob, qhov hluav taws xob hauv tsev, lub twj tso kua mis thiab lub valve npog, thiab lwm yam. Hauv kev siv, xws li gaskets tsis yog qhov kev xaiv zoo tshaj plaws rau cov tsheb niaj hnub vim qhov tseeb tias cork boards tau yooj yim tawg thiab tsis yooj yim rau nruab, tab sis lawv tseem tuaj yeem siv los hloov.

② Gasket asbestos phaj gasket
Liner asbestos board yog ib lub phaj zoo li cov khoom ua los ntawm asbestos fiber ntau thiab cov khoom nplaum, uas muaj cov yam ntxwv ntawm kev ua haujlwm kub, siab ua haujlwm, roj tsis kam, thiab tsis muaj deformation. Feem ntau siv nyob rau hauv carburetor, roj av twj, roj lim, lub sij hawm iav vaj tse, thiab lwm yam.

③ Roj-resistant roj hmab ncoo
Roj-resistant roj hmab lev feem ntau yog ua los ntawm nitrile roj hmab thiab ntuj roj hmab, thiab asbestos txhob lo lo ntxhuav yog ntxiv. Nws feem ntau yog siv los ua cov pwm gasket rau kev sib khi ntawm lub cav tsheb, feem ntau yog siv rau cov roj lauj kaub, lub hau npog, lub sijhawm lub iav vaj tse thiab cov lim cua.

④ Tshwj xeeb gasket
a. Lub hauv ntej thiab nram qab roj ntsaws ruaj ruaj ntawm lub crankshaft feem ntau yog tshwj xeeb txheem qhov chaw. Lawv feem ntau siv pob txha roj hmab roj foob. Thaum txhim kho, xyuam xim rau nws txoj kev taw qhia. Yog tias tsis muaj daim ntawv qhia, daim di ncauj nrog lub taub me me ntawm cov roj foob yuav tsum tau muab ntsia rau ntawm lub cav.
b. Lub tog raj kheej liner feem ntau yog ua los ntawm cov ntawv hlau lossis cov ntawv tooj liab asbestos. Tam sim no, feem ntau ntawm lub tsheb cav lub tog raj kheej gaskets siv cov khoom siv sib xyaw, uas yog, txheej txheej hlau sab hauv ntxiv rau hauv nruab nrab ntawm cov txheej asbestos los txhim kho nws cov rigidity. Yog li, qhov "washout" tsis kam ntawm lub tog raj kheej taub hau gasket yog txhim kho. Lub installation ntawm lub tog raj kheej liner yuav tsum tau them sai sai rau nws cov kev taw qhia. Yog tias muaj qhov sib dhos "TOP", nws yuav tsum tig mus rau sab saud; Yog tias tsis muaj cov cim sib dhos, qhov du nto ntawm lub tog raj kheej lub taub hau gasket ntawm cov cam khwb cia hlau lub tog raj kheej yuav tsum fim lub tog raj kheej thaiv, thaum lub tog raj kheej ntawm aluminium alloy lub tog raj kheej thaiv yuav tsum tig mus rau sab saud. Sab du ntawm lub gasket yuav tsum fim lub tog raj kheej taub hau.
c. Cov khoom noj khoom haus thiab tso pa tawm yog ua los ntawm cov hlau lossis tooj liab npog asbestos. Thaum txhim kho, kev saib xyuas yuav tsum tau ua kom lub ntsej muag curled (uas yog, qhov tsis du) ntsib lub tog raj kheej lub cev.
d. Lub foob nyob rau sab ntawm lub ntsiab tseem ceeb ntawm cov kabmob ntawm lub crankshaft feem ntau yog kaw los ntawm cov txheej txheem mos los yog xyoob. Txawm li cas los xij, thaum tsis muaj cov khoom zoo li no, txoj hlua asbestos uas tau ntub hauv cov roj lubricating kuj tseem siv tau, tab sis thaum sau, cov hlua asbestos yuav tsum tau tsoo nrog rab phom tshwj xeeb los tiv thaiv cov roj to.
e. Lub txim hluav taws xob thiab cov yeeb nkab tso tawm qhov sib txuas gasket yuav tsum tau hloov nrog lub gasket tshiab tom qab disassembly thiab sib dhos; cov txheej txheem ntawm kev ntxiv ob chav gaskets yuav tsum tsis txhob raug saws los tiv thaiv huab cua to. Kev paub dhau los tau ua pov thawj tias qhov kev ua tau zoo ntawm ob lub gaskets yog qhov phem dua.

⑤ Sealant
Sealant yog ib yam tshiab ntawm cov khoom sib khi hauv kev saib xyuas cov tsheb niaj hnub. Nws cov tsos thiab kev loj hlob muab tej yam kev mob zoo rau kev txhim kho sealing tshuab thiab kev daws qhov "peb leaks" ntawm lub cav. Muaj ntau ntau hom sealants, uas tuaj yeem siv rau ntau qhov chaw ntawm lub tsheb. Automotive cav feem ntau yog siv cov khoom tsis sib txuas (feem ntau hu ua kua gasket) sealants. Nws yog cov kua nplaum uas muaj cov khoom siv polymer ua cov matrix. Tom qab txheej txheej, ib txheej, ruaj khov thiab txuas ntxiv nplaum nyias txheej los yog zaj duab xis peelable yog tsim rau ntawm qhov sib koom ua ke ntawm qhov chaw, thiab tuaj yeem ua tiav qhov kev nyuaj siab thiab qhov chaw ntawm qhov sib koom ua ke. rau hauv qhov kis. Lub sealant yuav siv tau ib leeg los yog ua ke nrog lawv cov gaskets ntawm lub cav valve cover, roj lauj kaub, valve lifter cover, thiab lwm yam., thiab kuj yuav siv tau ib leeg nyob rau hauv lub xeem bearing cover ntawm lub crankshaft, nrog rau cov roj qhov ntsaws thiab oil plugs. thiab lwm yam.

2 Ntau qhov teeb meem uas yuav tsum tau them nyiaj rau hauv kev saib xyuas ntawm lub cav ntsaws ruaj ruaj

① Cov qub sealing gasket tsis tuaj yeem rov qab siv dua
Lub sealing gaskets ntawm lub cav yog ntsia nruab nrab ntawm qhov chaw ntawm ob qhov chaw. Thaum cov gaskets compressed, lawv phim lub microscopic unevenness ntawm qhov chaw ntawm qhov chaw thiab ua si lub luag hauj lwm sealing. Yog li ntawd, txhua txhua lub sij hawm lub cav yog tswj, yuav tsum tau hloov lub gasket tshiab, txwv tsis pub, yuav tshwm sim.

② Qhov sib koom ua ke ntawm cov khoom yuav tsum tiaj tus thiab huv si
Ua ntej txhim kho lub gasket tshiab, xyuas kom meej tias qhov sib koom ua ke ntawm qhov chaw yog huv si thiab tsis muaj av, thiab tib lub sijhawm, xyuas seb qhov saum npoo ntawm qhov puas yog warped, seb puas muaj lub hau npog ntawm lub qhov txuas txuas, thiab lwm yam. ., thiab yuav tsum tau kho yog tias tsim nyog. Cov nyhuv sealing ntawm lub gasket tsuas tuaj yeem ua tiav thaum qhov sib koom ua ke ntawm qhov chaw tiaj tus, huv si thiab tsis muaj warping.

③ Lub cav gasket yuav tsum muab tso kom zoo thiab khaws cia
Ua ntej siv, nws yuav tsum tau muab khaws cia rau hauv lub thawv qub, thiab yuav tsum tsis txhob muab tso rau hauv arbitrarily kom khoov thiab sib tshooj, thiab nws yuav tsum tsis txhob dai ntawm hooks.

④ Txhua txoj hlua txuas yuav tsum huv thiab tsis muaj kev puas tsuaj
Cov av ntawm cov xov ntawm cov bolts los yog lub qhov taub yuav tsum tau muab tshem tawm los ntawm threading los yog tapping; cov av nyob rau hauv qab ntawm lub qhov taub yuav tsum tau muab tshem tawm nrog ib tug kais thiab compressed cua; cov xov ntawm aluminium alloy lub tog raj kheej taub hau lossis lub tog raj kheej lub cev yuav tsum tau ntim nrog sealant, kom tsis txhob muaj roj nkag mus rau hauv lub tsho dej.

⑤ Txoj kev fastening yuav tsum tsim nyog
Rau qhov sib koom ua ke ntawm ntau lub bolts, ib lub bolts lossis txiv ntoo yuav tsum tsis txhob muab ntsia rau hauv qhov chaw ntawm ib lub sijhawm, tab sis yuav tsum tau nruj me ntsis ntau zaus kom tsis txhob muaj qhov deformation ntawm cov khoom los ntawm kev cuam tshuam rau kev sib khi. Bolts thiab ceev ntawm qhov tseem ceeb ntawm qhov sib koom ua ke yuav tsum tau nruj raws li qhov kev txiav txim tau teev tseg thiab nruj torque.
a. Kev nruj nruj ntawm lub tog raj kheej lub taub hau yuav tsum yog. Thaum zawm lub tog raj kheej taub hau bolts, nws yuav tsum tau nthuav dav symmetrically los ntawm qhov chaw mus rau plaub sab, los yog raws li daim ntawv qhia nruj raws li cov chaw tsim khoom.
b. Txoj kev nruj ntawm lub tog raj kheej taub hau bolts yuav tsum yog. Nyob rau hauv ib txwm muaj xwm txheej, bolt zawm tus nqi torque yuav tsum nruj rau tus nqi teev nyob rau hauv 3 zaug, thiab torque faib ntawm 3 zaug yog 1/4, 1/2 thiab tus nqi torque. Lub tog raj kheej taub hau bolts nrog tshwj xeeb yuav tsum tau ua raws li cov chaw tsim khoom cov cai. Piv txwv li, Hongqi CA 7200 sedan yuav tsum muaj tus nqi torque ntawm 61N·m thawj zaug, 88N·m rau zaum ob, thiab 90 ° kev sib hloov rau peb zaug.
c. Aluminium alloy lub tog raj kheej taub hau, txij li nws qhov nthuav dav coefficient ntau dua li ntawm cov bolts, cov bolts yuav tsum tau nruj rau hauv lub xeev txias. Cov cam khwb cia hlau lub tog raj kheej taub hau bolts yuav tsum tau muab nruj dua ob zaug, uas yog, tom qab lub tsheb txias yog nruj, thiab lub cav yog sov thiab ces nruj ib zaug.
d. Lub lauj kaub roj yuav tsum tau nruab nrog lub tshuab ntxhua khaub ncaws, thiab lub caij nplooj ntoos hlav ntxhua khaub ncaws yuav tsum tsis txhob cuam tshuam ncaj qha nrog lub lauj kaub roj. Thaum zawm cov ntsia hlau, nws yuav tsum tau nruj sib npaug ntawm 2 zaug los ntawm nruab nrab mus rau ob qhov kawg, thiab lub zog nruj feem ntau yog 2ON·m-3ON·m. Tshaj torque yuav deform lub lauj kaub roj thiab deteriorate lub sealing kev ua tau zoo.

⑥ Kev siv cov sealant kom raug
a. Tag nrho cov roj ntsaws ntsaws roj siab sensor thiab roj tswb sensor threaded pob qij txha yuav tsum tau coated nrog sealant thaum lub sij hawm installation.
b. Cork board gaskets yuav tsum tsis txhob coated nrog sealant, txwv tsis pub cov mos board gaskets yuav yooj yim puas; sealants yuav tsum tsis txhob coated rau lub tog raj kheej gaskets, intakes thiab tso pa manifold gaskets, spark plug gaskets, carburetor gaskets, thiab lwm yam.
c. Thaum ua ntawv thov sealant, nws yuav tsum tau thov tusyees nyob rau hauv ib qho kev taw qhia, thiab yuav tsum tsis txhob muaj kua nplaum tawg nyob rau hauv nruab nrab, txwv tsis pub yuav muaj cov kua nplaum tawg.
d. Thaum sealing qhov chaw ntawm ob qhov chaw nrog sealant ib leeg, qhov siab tshaj plaws qhov sib txawv ntawm ob qhov chaw yuav tsum tsawg dua los yog sib npaug li 0.1 hli, txwv tsis pub, lub gasket yuav tsum tau ntxiv.

⑦ Tom qab txhua qhov chaw raug teeb tsa thiab rov ua dua raws li qhov yuav tsum tau ua, yog tias tseem muaj "peb qhov xau" tshwm sim, qhov teeb meem feem ntau nyob hauv qhov zoo ntawm lub gasket nws tus kheej.
Nyob rau lub sijhawm no, lub gasket yuav tsum tau rov xyuas dua thiab hloov nrog ib qho tshiab.

Tsuav yog xaiv cov khoom sib khi uas tsim nyog thiab ntau yam teeb meem ntawm kev kho sealing yog them rau, qhov tshwm sim "peb to" ntawm lub tsheb cav tuaj yeem tswj tau zoo.