PPR cov kav dej feem ntau sib raug zoo los ntawm kub yaj, thiab cov ntsiab lus hauv qab no yuav tsum tau them sai sai rau kev sib txuas.
1. Cov cua kub kub thiab sijhawm
Vuam kub yuav tsum tswj hwm ntawm 260-270 ℃. Thaum ntsuas kub dhau lawm, PPR cov yeeb nkab tsis tuaj yeem yaj nyob rau hauv qhov chaw, thiab cov yeeb nkab thiab fittings tsis tuaj yeem txuas tau zoo. Thaum ntsuas kub dhau lawm, cov PPR yeeb yuav yaj ntau, yog li nws yooj yim ua rau txhaws ntawm qhov sib koom tes ntawm lub tog raj lossis lub qhov taub rau me me dhau los cuam tshuam rau ntws tawm. Ntxiv rau, PPR yuav dhau los ua nyias thiab muag muag thiab nyob twj ywm ntawm qhov tuag, carbonization yuav tshwm sim nyob rau hauv lub sij hawm ntev kub, uas yuav cuam tshuam kev pab cuam lub neej ntawm tuag.
Vim yog qhov tseem ceeb ntawm qhov kub thiab txias, cov khoom siv vuam siv yuav tsum muaj qhov zoo tswj kev ntsuas kub. Yog tias qhov ntsuas kub tswj qhov ua haujlwm tsis zoo, qhov kub thiab txias ntawm qee qhov khoom siv vuam yuav raug muab ua kom kub txog ntau dua 300 degrees. Yog tias qhov kub siab dhau, nws yog qhov yooj yim rau vuam teeb meem zoo. Cov.
Lub sijhawm ua cua sov muaj feem xyuam rau txoj kab uas hla ntawm PPR raj. Rau lub raj nrog sab nraud 20mm, lub sijhawm tso cua sov ntawm 5 hli tau zoo dua, thiab rau lub raj nrog lub taub sab nraud 25 hli, lub sijhawm cua sov yog 7s. Lub sijhawm luv luv lossis dhau sijhawm ntev yuav cuam tshuam rau lub vuam zoo ntawm PPR yeeb nkab.
2. Vuam qhov tob
Lub vuam qhov tob muaj feem xyuam rau txoj kab sab nraud ntawm PPR lub raj. Rau ib lub raj nrog sab nraud 20mm, qhov tsawg kawg nkaus vuam qhov siab yog 14mm, thiab rau lub raj nrog sab nraud 25mm, qhov tsawg kawg nkaus vuam qhov siab yog 15mm.
Thaum vuam qhov tob dhau ntiav, lub vuam tsis txaus thiab cov kav dej txuas tsis ruaj khov. Thaum lub vuam qhov tob dhau dhau lawm, qhov dhau heev yog txhawm rau sab hauv cov yeeb nkab, txo qhov ntsuas ntawm sab hauv ntawm cov dej ntawm qhov dej ntawm qhov seem, uas ua rau txo qis dej ntawm cov dej yeeb nkab, thiab tseem vuam thaiv. Ib qho ntxiv, ceev faj kom tsis txhob sim tig kav dej thiab fittings thaum tso rau hauv.
3. Puas yog lub taub hau tuag?
Muaj txheej txheej ntawm txheej txheej muaj Teflon rau ntawm qhov tuag ntawm lub vuam tshuab. Teflon yog ib qho nyuaj-los-nplaum cov khoom. Feem ntau lo ntawm kev ua lag luam tsis muaj kev cuam tshuam rau nws. Nws tuaj yeem tiv thaiv PPR kom tsis txhob tshuav thaum vuam. Txog ntawm tuag. Qhov zoo ntawm tus tuag yog zoo lossis phem, tab sis tus tuag yuav tsum ceev nws kom huv. Nws tsim nyog sau cia tias Teflon yuav hnav tawm tom qab siv ntev ntev. Tom qab hnav, coj los tiv thaiv cov yam ntxwv ntawm kev tuag yuav cuam tshuam rau qee yam. Lub sijhawm no, cov neeg tuag xav tau hloov, txwv tsis pub nws yuav ua rau PPR yeeb yam poob tawm. Kev nyab xeeb ntawm vuam. Niaj hnub no, ntau tus neeg plam tsis kam hloov lub taub hau tuag. Qhov tseeb, nws tsuas yog ob peb duas las los yog ob peb duas las. Vim li no, nws yog tiag tiag tsis tsim nyog nws vim tias poob me me.
4. PPR raw cov ntaub ntawv tsis zoo lossis tsis zoo
Qhov ua tau zoo ntawm cov ntaub ntawv raw ntawm cov yeeb nkab dej yuav cuam tshuam rau txoj kev sib txuas ntawm cov taub dej. Kuv ntseeg tias cov neeg kho qhov muag tau paub nws zoo. 260-270 ℃ yog vuam kub ntawm PPR, uas txhais tau tias cov khoom siv PPR melts txaus rau qhov kub no thiab yooj yim rau weld. Ntawm no yog ob lub tswv yim ntawm kev kawm nrov, melting ntau yam thiab melting Performance index. Rau cov ntaub ntawv polymer, kub kub melting yog ntau, uas yog, lub caij yaj yaj (thaum pib melting-kawg melting), thiab fluidity tom qab melting tuaj yeem qhia los ntawm melting Performance index. Ob txoj kev sib raug zoo no cuam tshuam li cas vuam? Nws tuaj yeem to taub yooj yim tias yog tias pib cov ntsiab lus melting qis dua, cov khoom yuav yaj sai dua, thiab qhov siab dua ntawm cov nplauv ploj, cov khoom tawg yuav yaj. Ob lub yeeb yam no cuam tshuam ncaj qha rau lub sijhawm ua haujlwm ntawm PPR yeeb nkab vuam.
Lub thev naus laus zis tseem ceeb ntawm PPR raw khoom nyob ntawm no. Ob qhov kev txwv ntawm qhov zoo ntshiab PPR raw khoom yog tswj tau zoo, thiab lub kav xa dej sib kis tau yooj yim dua. Lub zom zaws thiab cov nplaim hluav taws kub ntawm PPR cov khoom nyoos doped nrog impurities yuav loj dua, uas thaum kawg yuav cuam tshuam rau qhov weldability ntawm PPR yeeb nkab.
5. Seb lub chaw nres nkoj yeeb nkab puas tawg
Vim yog qhov kub thiab txias me me ntawm PPR, tshwj xeeb tshaj yog nyob rau lub caij ntuj no, ib puag ncig ntawm qhov chaw tsim kho yog feem ntau cov nyom ntxiv. Yog tias koj tsis mob siab rau kev tiv thaiv, PPR cov yeeb nkab yuav kov yeej tsis puas. Nws yog qhov tsim nyog rau cov kav dej txhawm rau xyuas seb cov kav dej puas tau ua ntej vuam kav dej, thiab zam kev siv cov kav xa dej uas muaj kab tawg kom txuas nrog cov kav xa dej, uas yuav ua rau dej xau. Tsis tas li ntawd, xyuam xim rau kev huv ntawm welded ib feem ntawm cov yeeb nkab kom tsis txhob vuam tsis muaj zog.