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Dab tsi Yog Cov Kev Sib Txuas Ntawm HDPE Kav Kav

May 23, 2020

Dab tsi yog cov kev txuas sib txuas ntawm HDPE kav dej


1. Taub qab vuam txuas

Rau taub qab vuam, tag nrho cov yeeb nkab fittings nrog diameters los ntawm φ 32 rau 315 hli siv tau. Cov yam ntxwv ua tau zoo ntawm cov qauv kev txuas no yog: kev sib txuas sib txuas, tsis tuaj yeem tshem tawm thiab lub zog tensile.


Taub-weld txuas yog ib txoj kev sib txuas yooj yim tshaj plaws kab kev sib txuas. Nws muab ntau qhov yooj yim thiab qhov ua tau zoo rau qhov kev teeb tsa ua ntej ntawm txhua qhov system, thiab tsis muaj lwm yam uas yuav tsum tau ua. Yog li no, txawm hais tias qhov kev teeb tsa ua haujlwm tau npaj tseg rau hauv qhov chaw lossis hauv chav cob qhia tuaj yeem siv taub qab txuas txuas.


Lub vuam vias ntawm lub pob tw vuam yog qhov tsawg heev, lub vuam txuas yuav tsis cuam tshuam nrog lub raj xa dej, thiab tsis muaj kev hloov pauv sab hauv ntu ntawm cov kav dej txuas. Cov kev tso cai tuab ntawm lub vuam saum npoo yuav luag zoo li tib yam li lub thickness ntawm cov yeeb nkab phab ntsa, yog li cov yeeb nkab tsis nkim. Los ntawm tus qauv txuas pob tw txuas, qhov ntev ntawm cov yeeb nkab thiab sib koom tes ntawm lub luj tshib tuaj yeem siv tau qhov no.


Thaum cov kab hlau txoj kab txiav tsawg dua φ 75 hli, txoj kev tuav vuam txoj kev siv tau tuaj yeem siv tau; lub tshuab fais fab hlau siv rau vuam, thiab cov yeeb nkab kab hluav taws xob feem ntau yog φ40-315mm.


2. Txoj kev sib txuas ntawm txoj hlua hluav taws xob vuam yeeb nkab txuas hoop txuas thooj


Lub vuam txheej txheem ntawm cov yeeb nkab hluav taws xob txuas yog qhov tsim nyog rau txuas cov kav dej nrog diameters los ntawm φ40-315mm. Nws cov yam ntxwv ua tau zoo: kev sib txuas sib txuas, tsis yog rhuav tshem, lub zog tensile.


Lub vuam txheej txheem ntawm cov kav hlau txuas hoop txuas feem ntau yog siv rau ntawm qhov chaw vuam, hloov kho, ntxiv rau kev teeb tsa thiab kho vim nws yooj yim siv, txhim khu kev qha, yooj yim thiab ceev. Yog tias cov raj xa dej yuav tsum tau hloov kho lossis qee qhov ua haujlwm hloov kho thaum ntxov ua tiav, qhov txuas rau lub tshuab hle yeeb nkab tuaj yeem xaub tawm los ntawm kev tshem lub nplhaib nruab nrab. Cov cua kub thiab thaj chaw melting ntawm hluav taws xob vuam yeeb nkab hoop sib cais, yog li tsis muaj qhov tsis kam nyob hauv nruab nrab ntawm cov yeeb nkab hoop, yog li nws muaj kev nyab xeeb heev rau kev siv. Tom qab kev ua haujlwm vuam tiav tiav, cov txheej tiv thaiv tau them nrog PE (polyethylene) khoom, yog li nws yuav tsis xeb. Lub siab tus nqi uas yuav tsum tau thaum vuam yog tsim los ntawm kev txiav tawm ntawm cov yeeb nkab hoop thaum rhuab. Thaum lub sijhawm cua sov, lub siab raug xa tawm tsis zoo ntawm lub vuam, thiab cov nyhuv shrinkage ua rau txoj kab uas hla ntawm cov yeeb nkab yuav hloov tsis pub dhau qhov tso cai.


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