Ua ntej, cov kav dej thiab fittings tsis tuaj yeem tig tau thaum lub sij hawm cua sov thiab cov txheej txheem splicing, lawv yuav tsum tau muab tso rau hauv ib txoj kab ncaj nraim, thiab cov welding ib txwm yuav tsum tsim kom muaj qhov sib xws thiab ruaj khov ntawm qhov sib koom ua ke. Qhov thib ob, txoj kev siv vuam yuav tsum tau ua raws li cov kev cai nruj heev. Cov cuab yeej siv tes tuav yog tsim nyog rau kev sib txuas zaum kawg ntawm cov kav dej me me thiab cov kav dej, thiab lub tshuab trolley-hom vuam yog tsim rau kev sib txuas ua ntej ntawm cov kav dej loj. Thib peb, kev tsim cov yeeb nkab PE siv lub tshuab txhaj tshuaj dav dav, cov khoom siv melting kub yog 200-220 degree C, thiab feem ntau siv cov txheej txheem high-speed low-pressure txhaj molding. Txhawm rau daws qhov teeb meem antistatic ntawm PE yeeb nkab fittings: Ua ntej ntawm tag nrho cov, tag nrho cov khoom nyob rau hauv lub mis yuav ntsuas nyob rau hauv ib tug tej yam kev faib ua feem, tov nyob rau hauv ib tug high-ceev tov khoom, thiab extruded thiab granulated los ntawm ib tug ntxaib-ntsia hlau extruder. Cov txheej txheem no yooj yim. , tus nqi ua haujlwm tsawg. Tom qab ntawd, nws tseem tuaj yeem muab rho tawm thiab ntsuas tag nrho cov khoom xyaw hauv cov mis raws li ib qho kev faib ua feem, ntxiv ib qho nyiaj ntawm PE cab kuj, sib tov los ntawm melting thiab banburying, thiab extrude thiab granulate. Tsis tas li ntawd, tus masterbatch tuaj yeem ncaj qha extruded los ntawm kev ntxiv PE resin raws li qhov kev faib ua feem. Cov teeb meem uas yuav tsum tau them nyiaj mloog mus rau hauv cov backfilling ntawm PE kav thiab fittings: Ua ntej, siv cov av xuab zeb los yog cov av qub uas ua tau raws li qhov yuav tsum tau ua kom rov qab cov kav dej PE. Qhov siab ntawm ib qho rov qab yog 100-150mm. Tom qab tamping, rov qab cov txheej thib ob kom txog thaum lub backfill yog saum toj ntawm cov yeeb nkab. yam tsawg kawg yog 100 mm. Tom qab ntawd, tom qab lub raj xa dej ntsuas tau tsim nyog, thaj chaw loj yog rov qab, thiab qhov siab tshaj 300mm los ntawm cov yeeb nkab sab saum toj yog rov qab nrog cov av qub thiab ntim. Ib zaug ntxiv, thaum siv mechanical backfilling, nws yog ib qho tsim nyog yuav tsum rov qab los ntawm ob sab ntawm cov yeeb nkab tib lub sijhawm, thiab lub tshuab yuav tsum tsis txhob taug kev ntawm cov yeeb nkab. Tsis tas li ntawd, nyob rau hauv cov txheej txheem ntawm backfilling, qhov sib txawv ntawm qhov qis ntawm cov yeeb nkab thiab hauv qab ntawm cov yeeb nkab yog yooj yim ignored, thiab yuav tsum tau them nyiaj rau compaction.
